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Title:
AUGMENTED REALITY PROTECTIVE GOGGLES
Document Type and Number:
WIPO Patent Application WO/2018/127777
Kind Code:
A1
Abstract:
The invention relates to protective goggles, in particular for industrial use, comprising a frame (10), protective lenses (30) fixed to the frame (10), and at least one augmented reality device (50) comprising an optical engine (502), adapted to generate and project graphic and/or alphanumeric information in the form of light waves, and a holographic light guide (504), which extends from said optical engine and which is adapted to receive, guide and emit said light waves. The optical engine (502) is fixed to one end of the front portion (102) of the frame (10), so as to extend laterally with respect to the user's eye. The holographic light guide (504) is in the form of a plate having a transmittance equal to at least 80% and extending towards the center of the user's face.

Inventors:
BORSANI FABIO (IT)
COCCOLI MAURO (IT)
Application Number:
PCT/IB2017/058509
Publication Date:
July 12, 2018
Filing Date:
December 29, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
UNIVET S R L (IT)
International Classes:
G02B27/01; A61F9/02; G06T19/00
Foreign References:
FR2985323A12013-07-05
US20110221656A12011-09-15
US20140232651A12014-08-21
US20070008624A12007-01-11
US20160246059A12016-08-25
US5767820A1998-06-16
US20150309534A12015-10-29
US20150378160A12015-12-31
US20150123881A12015-05-07
US20160357021A12016-12-08
Attorney, Agent or Firm:
TANA, Maria Gabriella et al. (IT)
Download PDF:
Claims:
Claims

1. Protective goggles, in particular for industrial use, comprising :

- a frame (10) comprising a front portion (102);

- protective lenses (30) fixed to the frame (10) and extending from the front and side with respect to the user' s face so as to protect the eyes from external agents coming from the front, side, above and below, said lenses being provided with a support element (302) on the nose;

- at least one augmented reality device (50) comprising an optical engine (502) adapted to generate and project graphic and/or alphanumeric information in the form of light waves and a holographic light guide (504), which extends from said optical engine and which is adapted to receive, guide and emit said light waves, the optical engine (502) being fixed to one end of the front portion (102) of the frame (10) so as to extend laterally with respect to the user's eye, the holographic light guide (504) being in the shape of a plate having a transmittance equal to at least 70% and extending towards the center of the user's face, between a respective eye and the protective lenses (30), so as to emit the light waves towards the user's eye, at least one side portion (304) of the protective lenses forming a side pocket (305) adapted to enclose the optical engine (502) on the outside .

2. Goggles according to claim 1, wherein the optical engine (502) is connected to the front portion (102) of the frame (10) by adjustment means (70; 170) of the position of the augmented reality device (50) .

3. Goggles according to the preceding claim, wherein said adjustment means (70) comprise translation means (702) operable by the user to cause a horizontal displacement of the augmented reality device.

4. Goggles according to the preceding claim, wherein said translation means (702) comprise a micrometric screw system.

5. Goggles according to claim 3 or 4, wherein an end maneuvering portion (704) of the translation means (702) projects from the protective lenses (30) through a gap

(306) made in the perimetral portion (304) of the protective lenses (30) .

6. Goggles according to any one of the claims 3-5, wherein said adjustment means (70) comprise a universal joint (710) adapted to permit oscillations in space of the augmented reality device (30) .

7. Goggles according to claims 3 and 6, wherein said universal joint (710) connects the optical engine (502) to the translation means (702) .

8. Goggles according to claim 6 or 7, wherein the side pocket (304) is spaced from the optical engine (502) so as to allow the user to grasp the free end of the optical engine (502) with his/her fingers, to change its position by means of the universal joint (710) .

9. Goggles according to claim 2, wherein the adjustment means (170) are made up of a ball joint (170a) comprising a male spherical element (172), which extends downwards from the front portion (102) of the frame (10), and which is received in a spherical seat (174) made in a joint casing (176) integral with the optical engine (502) and extending above the holographic guide (504), where this is connected to the optical engine (502) .

10. Goggles according to the preceding claim, wherein the joint casing (176) is made in two halves releasably joined to each other to allow a rotation of the augmented reality device with respect to the male spherical element (172) and successive blocking of the ball joint (170a) in the chosen position.

11. Goggles according to the preceding claim, wherein the male spherical element (172) extends from a free end of a substantially horizontal arm (178) connected to a central portion of the front portion (102) of the frame (10) .

12. Goggles according to any one of the preceding claims, comprising sensors and/or actuators mounted onto or made in the frame (10) .

13. Goggles according to the preceding claim, wherein, in a central area of the front portion (102), the frame (10) is provided with an electrical and mechanical interface (200) compatible with a communication system of a digital type and/or an analog type, adapted to detachably connect at least one external electronic device (210), for example a camera.

14. Goggles according to any one of the preceding claims, wherein the optical engine (502) is connected to an external control unit (90) .

15. Goggles according to the preceding claim, wherein the external control unit (90) is provided with an internal supply battery, and wherein the goggles comprise a portable spare battery pack (902) releasably connectable to the external control unit (90) for recharging said internal battery.

16. Goggles according to claim 14 or 15 when it depends on claim 12 or 13, wherein the control unit is adapted to receive and process data from the sensors, and command the optical engine to generate a holographic image according to the data received.

17. Goggles according to any one of the claims 12-16 when they depend on claim 11, wherein the sensors and/or actuators are connected to an electrical connector made in the optical engine by means of an electrical cable (220) passing through the ball joint (170a) and in a passage (222) made in the arm (178) .

18. Goggles according to any one of the preceding claims, comprising a nose (230) detachably connectable to one end of a rod (232), which extends from the front portion (102) of the frame (10) .

19. Goggles according to the preceding claim, wherein the nose (230) has a plastically deformable core so as to adapt to any shape or size of the user's face.

20. Goggles according to any one of the preceding claims, wherein the protective lenses (30) are detachably connected to the frame (10) .

21. Goggles according to the preceding claim, wherein the frame (10) is provided with a hollow front seat (110) made in the front portion (102) and a lateral coupling tooth (112), which extends from a lateral extension (114) of the front portion (102), and wherein a front coupling tooth (310) and a lateral seat (312) are made in the protective lenses (30) suitable to engage with a shaped coupling to said hollow front seat (110) and said lateral coupling tooth (112), respectively.

22. Goggles according to any one of the preceding claims, wherein the augmented reality device (30) is detachably connected to the frame (10) .

23. Goggles according to any one of the preceding claims, wherein the protective lenses (30) are shaped so as to allow the user to wear corrective eyewear (80) with graduated lenses inside the protective goggles, the holographic guide (504) being interposed between a lens of the graduated eyewear and a lens of the protective lenses ( 30 ) .

24. Goggles according to any one of the preceding claims, wherein the protective lenses (30) are free of distortion effects of the incident optical beams.

25. Goggles according to any one of the preceding claims, wherein the protective lenses (30) are made of polycarbonate .

26. Protective goggles, in particular for professional use, comprising:

- a frame (10) comprising a front portion (102), two side legs (104), each hinged to a corresponding end of the front portion, and a support element on the nose;

- at least one augmented reality device (50) comprising an optical engine (502) adapted to generate and project graphic and/or alphanumeric information in the form of light waves, and a holographic light guide (504), which extends from said optical engine and which is adapted to receive, guide and emit said light waves, the optical engine (502) being fixed to one end of the front portion (102) of the frame (10), so as to extend laterally with respect to the user's eye, the holographic light guide (504) being in the form of a plate having a transmittance equal to at least 80% and extending towards the center of the user's face, so as to emit the light waves towards the user' s eye,

wherein the optical engine (502) is connected to the front portion (102) of the frame (10) by adjustment means (70) of the position of the augmented reality device (50), said adjustment means (70) comprise translation means (702) operable by the user to cause a horizontal displacement of the augmented reality device, and a universal joint (710) adapted to permit oscillations in space of the augmented reality device (30) .

27. Protective goggles, in particular for professional use, comprising:

- a frame (10) comprising a front portion (102), two side legs (104), each hinged to a corresponding end of the front portion, and a support element on the nose;

- at least one augmented reality device (50) comprising an optical engine (502), adapted to generate and project graphic and/or alphanumeric information in the form of light waves, and a holographic light guide (504), which extends from said optical engine and which is adapted to receive, guide and emit said light waves, the optical engine (502) being fixed to one end of the front portion (102) of the frame (10), so as to extend laterally with respect to the user's eye, the holographic light guide (504) being in the form of a plate having a transmittance equal to at least 80% and extending towards the center of the user's face, so as to emit the light waves towards the user' s eye,

wherein the optical engine (502) is connected to the front portion (102) of the frame (10) by adjustment means (170) of the position of the augmented reality device (50), said adjustment means (170) comprising a ball joint (170a) adapted to permit oscillations in space of the augmented reality device (30) .

Description:
DESCRIPTION

"AUGMENTED REALI TY PROTECTIVE GOGGLES"

[0001] The present invention relates to protective goggles, in particular for industrial use, provided with a device for augmented reality.

[0002] Goggles provided with a device for augmented reality have recently been proposed, also known as "Smart Glasses". They are wearable optoelectronic devices, i.e. goggles provided with electronic resources (such as displays, microprocessors, sensors) and optical resources (such as light guides, lenses and prisms), which allow the user to see, for example superimposed on the real image, graphic and/or alphanumeric information conveyed by an external system.

[0003] In the industrial and professional field, augmented reality goggles can find many applications, for example: Management of warehouse item collection data, assembly instructions, information on machine operation, real-time displaying of clinical data, simultaneous translations, signaling of dangerous situations, and many more.

[0004] However, it must be remembered that in the field of industry and medicine, only products falling within the category of λ ΡΡΕ' (Personal Protective Equipment) and approved according to specific directives and complying with strict regulations may be used. [0005] At present, Smart Glasses specifically designed to meet PPE requirements do not exist on the market. In particular, the currently known augmented reality goggles have various restrictions, which prevent them from being approved and thus promoted in the industrial and professional fields, for example low impact resistance, insufficient strength, poor resistance to aging, corrosion, start-up and scratches, poor protection at the front and side, limited field of vision, low transmittance, small temperature range.

[0006] It is an object of the present invention to propose protective goggles, in particular for industrial use, provided with an augmented reality device, which are at the same time capable of overcoming the restrictions referred to above in relation to Smart Glasses of the prior art, and particularly suitable for meeting the regulations on Personal Protective Equipment.

[0007] Said object is achieved by protective goggles according to claim 1.

[0008] The dependent claims describe preferred embodiments of the invention.

[0009] The features and advantages of the protective goggles according to the invention will however become apparent from the following description of preferred embodiments, given by way of a non-limiting example, with reference to the accompanying drawings, in which:

figure 1 is a perspective view of the protective goggles according to the invention;

- figure 2 is an exploded view of the goggles;

- figure 3 is a rear perspective view of the goggles with protective lenses separate from the frame;

- figure 4 is a rear perspective view of the goggles with the augmented reality device separate from the frame;

- figures 5 and 5a are two rear views of the goggles, which show respective adjustments of the position of the augmented reality device;

- figure 6 is a rear perspective view of the protective goggles according to the invention superimposed on glasses with corrective lenses;

- figure 7 shows a user wearing the protective goggles according to the invention on glasses with corrective lenses ;

figure 8 is a perspective view of the protective goggles, which highlights a portable spare battery pack, separate from the supply and control unit of the augmented reality device;

- figure 9 is a perspective view of a portion of the interior of the protective goggles in an alternative embodiment ;

- figure 10 is an axial section of the means for connecting the augmented reality device to the frame of the goggles, in the embodiment in figure 9;

- figure 11 is a perspective view of a portion of the upper part of the frame of the goggles, in a further alternative embodiment; and

- figures 12 and 12a show a view of a portion of a frame of the goggles, with parts separated and assembled, respectively, in an alternative embodiment with an interchangeable nose.

[0010] In the following description, elements common to the different embodiments are indicated by the same reference numerals .

[0011] In said drawings, 1 indicates protective goggles as a whole, provided with an augmented reality device, in particular for industrial use.

[0012] In a general embodiment, the goggles 1 comprise a frame 10, protective lenses 30 fixed to the frame 10, and at least one augmented reality device 50.

[0013] The frame 10 comprises a front portion 102. In one embodiment, the frame also comprises two side legs 104, each hinged to a corresponding end of the front portion 102.

[0014] In one alternative embodiment - not shown - an elastic band adapted to surround the user' s head is connected to the front portion 102. [0015] For example, the front portion 102 essentially consists of a rod-like element 102' conveniently shaped so as to cover the user' s forehead, extending between the temple areas.

[0016] The protective lenses 30 extend from the front and side with respect to the user' s face so as to protect the eyes from external agents from front, side, top and bottom directions.

[0017] In one embodiment, the protective lenses 30 comprise a front portion 301, which protects the eyes at the front, and a perimetral portion 304, which, being inclined with respect to the front portion 301, joins the latter to the user's forehead, cheekbones, nose and temple areas, thus protecting the eyes in lateral or radial directions.

[0018] In one embodiment, the protective lenses 30 are provided with a support element 302 on the nose.

[0019] In one embodiment, the protective lenses 30 are made of transparent polycarbonate and are coated and/or undergo treatments so as to become scratchproof .

[0020] However, the protective lenses 30 are suitable for ensuring conformity of the goggles to the safety standards related to PPE products (Personal Protective Equipment) , and in particular compliance with the standard EN 166, cat. 2, impact resistance F(T) . [0021] The augmented reality device 50 comprises an optical engine 502 and a holographic light guide 504.

[0022] The optical engine 502 is adapted to generate and project graphic and/or alphanumeric information in the form of light waves. The holographic light guide 504 extends from the optical engine 502 and is adapted to receive, guide and emit the light waves in a predetermined direction.

[0023] In practice, the optical engine 502 includes a micro-display the pixels of which are activated according to the information to be displayed. The image generated on the micro-display is projected, by means of a lens system also contained in the optical engine 502, onto a proximal end portion of the holographic light guide 504, thus creating a hologram of the image produced by the micro-display on said proximal end portion. Such a hologram is transmitted to a distal area of the holographic light guide 504 by reflection means formed inside the holographic light guide 504, so as to be transmitted towards the user's eye.

[0024] Advantageously, the holographic light guide 504 is in the shape of a plate having a transmittance equal to at least 70%, preferably higher than 80%. Advantageously, the thickness of such a plate, including protective layers, is equal to or lower than 3 mm. Therefore, when the augmented reality device is inactive, the holographic light guide 504 is substantially transparent and does not alter the user's vision even if it is placed in front of the eye.

[0025] The technology used by the augmented reality device 50 used in the protective goggles 1 according to the invention is described for example in US2010046070 Al .

[0026] The optical engine 502 is integrated into a casing 502' fixed to one end of the front portion 102 of the frame 10 so as to extend laterally with respect to the user's eye. In other words, the optical engine 502 extends at the temple area, i.e. between the outer end of the eye and the front end of the ear.

[0027] The holographic light guide 504 has a proximal end fixed to the front end of the optical engine 502, which extends towards the center of the user's face, between a respective eye and the protective lenses 30, so as to emit the light waves, i.e. the hologram of the image projected by the optical engine 502, towards the user's eye.

[0028] Therefore, the front portion 301 of the protective lenses 30 is superimposed on the holographic light guide 504. In other words, the protective lenses 30, with the user's face, delimit a protected chamber 30', which houses the holographic light guide 504. [0029] When the image emitted by the holographic light guide 504 is in the focus of the user's retina, the graphic and/or alphanumeric information generated by the augmented reality device 50 is clearly seen by the user, superimposed on the real image, as shown for example in figures 5 and 5a.

[0030] Furthermore, at the optical engine 502, the perimetral portion 304 of the protective lenses forms a side pocket 305 adapted to enclose the optical engine 502 on the outside.

[0031] Therefore, the augmented reality device 50 is completely protected by the protective lenses 30.

[0032] In one embodiment, the optical engine 502 is connected to the front portion 102 of the frame 10 by adjustment means 70 of the position of the augmented reality device 50.

[0033] Due to such adjustment means 70, in particular, the position of the holographic light guide 504 can be adapted to the shape and size of the user's face, so that the holographic image can easily be focused by the user without looking away from what he/she is paying attention to .

[0034] In one embodiment, the adjustment means 70 comprise translation means 702 operable by the user to cause a horizontal displacement of the augmented reality device 50 (Figure 5) . For example, such translation means 702 comprise a micrometric screw system.

[0035] In one embodiment, an end maneuvering portion 704 of the translation means 702, for example a handle of the micrometric screw, projects from the protective lenses 30 through a gap 306, for example obtained in the perimetral portion 304.

[0036] In one embodiment, the end maneuvering portion 704 extends above the eye and is facing sideways, externally with respect to the face, as shown in the drawings. In this way, the user can easily maneuver the translation means 702, without hindering his/her view.

[0037] In one embodiment, the adjustment means 70 also comprise a universal joint 710, for example made with a ball joint, adapted to permit oscillations in space of the augmented reality device 30.

[0038] In other words, the optical engine 502 and the holographic light guide 504 integral therewith, can oscillate with respect to a horizontal axis parallel to the holographic light guide 504, to a horizontal axis perpendicular to the holographic light guide 504, and to a vertical axis.

[0039] In one embodiment, the translation means 702 extend above the optical engine 502 and the holographic light guide 504, and the universal joint 710 connects the optical engine 502 to the translation means 702.

[0040] In one embodiment, the side pocket 305 is spaced from the optical engine 502, at least at the free end of the optical engine 502, so as to allow the user to grasp such a free end with his/her fingers, to change its position by means of the universal joint 710.

[0041] In one embodiment shown in particular in figures 2 and 3, the protective lenses 30 are detachably connected to the frame 10.

[0042] For example, the frame 10 is provided with a hollow front seat 110, obtained in a projection, for example, which extends from the front portion 102, for example in a central position, and a lateral coupling tooth 112, which extends from a lateral extension 114 of the front portion 102. A front coupling tooth 310, adapted to be engaged with the hollow front seat 110 by means of a shaped coupling, and a lateral seat 312 adapted to receive the lateral coupling tooth 112 by means of a shaped coupling, are obtained in the protective lenses 30. For example, the teeth and the seats thereof can be coupled by means of interference, pressure or by snapping .

[0043] In one embodiment, the hollow front seat 110 and the lateral coupling tooth 112 are obtained in a coupling interface detachably fixed to the frame 10. [0044] The releasable coupling between the protective lenses 30 and the frame 10 allows only the lenses 30 to be replaced, for example in the event of damage, preserving the frame 10 and the augmented reality device 50.

[0045] In one embodiment shown in figures 2 and 4, the augmented reality device 50 is detachably connected to the frame 10. For example, the optical engine 502 is detachably connected to the translation means 702, which can be fixed, in turn, permanently or detachably to the front portion 102 of the frame 10.

[0046] For example, the ball joint of the optical engine 502 can be coupled by means of pressure or magnetically to a respective spherical seat obtained in the translation means 702.

[0047] In this way, an augmented reality device 50, which obviously constitutes the most complex and costly part of the protective goggles, can be shared by several protective goggles, for example in a company.

[0048] In one embodiment shown in figures 6 and 7, the protective lenses 30 are shaped so as to allow the user to wear corrective eyewear 80, i.e. provided with graduated lenses, inside the protective goggles 1. In this case, the holographic guide 504 is interposed between one lens of the graduated eyewear 80 and one lens of the protective lenses 30.

[0049] In other words, the protective lenses 30 are chosen so that the protected chamber 30' has a volume such as to also receive the lenses of the corrective eyewear 80, as well as the holographic light guide 504. Note that, due to the inclination of the optical engine 502 moving away from the user's face, the frame of the corrective eyewear 80 does not interfere with the optical engine 502.

[0050] Also note that, in one preferred embodiment, the protective lenses 30 are free of distortion effects of the incident optical beams. In other words, the combination of the protective lenses 30 and the holographic light guide 504 does not alter a user' s vision .

[0051] In one embodiment shown in the figures, the optical engine 502 is connected to an external control unit 90. In one embodiment, such an external control unit 90 acts as a supply unit, being provided, for example, with an internal battery.

[0052] For example, the control unit 90 is connected by cable to the optical engine 502 and dimensioned so that it can easily be carried by the user of the protective goggles 1. The main function of the control unit 90 is to provide the optical engine with the electrical commands to activate the pixels of the micro-display, based on instructions supplied to the control unit, for example by a smartphone or another device provided with a special application program or, as described below, based on data received from sensors mounted to the frame or provided in the frame.

[0053] When the control and supply unit 90 is provided with a supply battery, it electrically supplies the optical engine 502.

[0054] In one embodiment, the control unit 90 can be connected to a portable spare battery pack 902. Such a battery pack 902 is provided with rechargeable batteries having a far greater capacity with respect to the battery inside the control unit 90 and it can be connected to the control unit 90 to recharge such an internal battery when it is about to go flat. In this way, the autonomy of the augmented reality device 50 is improved significantly with respect to the autonomy of the Smart Glasses currently on the market, which is advantageous for use in industrial or professional applications, where the continued operation of the device must be ensured.

[0055] Furthermore, the autonomy of the augmented reality device is virtually unlimited, being able to replace the spare portable spare battery pack 902, when necessary, with charge while the internal battery continues to operate the same device acting as a "backup" battery. [0056] Note that the control unit 90 can easily be carried by the user also when the spare rechargeable battery pack 902 is connected thereto.

[0057] Figures 9 and 10 show the protective goggles in further alternative embodiments.

[0058] In these embodiments, the adjustment means, indicated by 170, consists of a single ball joint 170a.

[0059] In fact, the position of the center of the ball joint 170a is chosen so as to ensure the vision of the hologram for any interpupillary distance, without needing to translate the augmented reality device, but simply by rotating it around the three rotation axes orthogonal to one another.

[0060] Thus, this type of connection allows the desired "displacement" of the virtual image within the user' s field of vision according to the user' s needs and preference. For example, by rotating the augmented reality device upwards, it is possible to have a field of vision free of writing at the bottom (for example for reading operations) .

[0061] More specifically, the ball joint 170a comprises a male spherical element 172, which extends downwards from the front portion 102 of the frame 10.

[0062] The male spherical element 172 is received in a spherical seat 174 obtained in a joint casing 176 integral with the optical engine 502 and extending above the holographic guide 504, where this connects to the optical engine 502.

[0063] In one embodiment, the joint casing 176 is provided in two halves releasably joined to each other to allow a rotation of the augmented reality device with respect to the male spherical element 172 and the successive blockage of the ball joint 170a in the chosen position. For example, the two halves of the joint casing 176 are connected to each other by locking screws 179.

[0064] Note that in this embodiment, the augmented reality device 50 can be rotated by acting manually on the end of the optical engine 502 projecting at the back from the protective pocket 305. Thus, it is not necessary to provide further special openings in the lens 30 to access the adjustment means 170. Therefore, the augmented reality device 50 is further protected by the lens 30.

[0065] In one embodiment, the male spherical element 172 extends from a free end of a substantially horizontal arm 178 connected to a central portion of the front portion 102 of the frame 10.

[0066] In one embodiment shown in figure 10, the adjustment means 170 also act as electrical connection means between an electrical connector - not shown - provided in the optical engine 502 and sensors and/or actuators mounted to the frame 10. For example, such an electrical connector forms a USB port.

[0067] In fact, in one embodiment shown in figure 11, the protective goggles 1 are provided with sensors and/or actuators, such as, for example, a compass, gyroscope, accelerometer, camera, video camera, infrared camera, temperature sensor, air quality sensor, formaldehyde sensor, radon sensor, CO sensor, C02 sensor, flight time sensor, proximity sensor.

[0068] For example, in a central area of the front portion 102, the frame 10 is provided with an electrical and mechanical interface 200, compatible with a communication system of a digital type and/or an analog type, adapted to detachably connect at least one external electronic device 210, for example a camera.

[0069] For the electrical connection of such sensors and/or actuators to the electrical connector of the optical engine, an electrical cable 220 is passed through the ball joint 170a, for example between the male spherical element 172 and the spherical seat 174, and in a passage 222 obtained in the arm 178.

[0070] Therefore, the sensors and/or actuators are advantageously placed directly on the frame 10 and thus have the same "viewpoint" as the operator.

[0071] The control unit 90, in this case, is not only a simple communication device, but a real calculation unit.

[0072] For example, the control unit 90 processes the data from the sensors mounted to the frame and therefore commands the optical engine 502 to generate a holographic image according to the data received.

[0073] In one embodiment shown in figures 12 and 12a, in order to ensure easy viewing of the hologram by any user, for example of any nationality (Asian, European, American) , a nose 230 is used, detachably connected to the frame 10. For example, the nose 230 is snap coupled to the end of a rod 232, which extends from the front portion 102 of the frame 10.

[0074] Furthermore, the nose 230 can have a plastically deformable core so as to be adapted to any shape or size of the user's face.

[0075] Note that the securing of the nose to the frame instead of to the lens allows the independent replacement of the lens 30 and the nose 230.

[0076] In order to meet contingent needs, those skilled in the art may replace elements with others, which are functionally equivalent, and make changes and adaptations to the embodiments of the protective goggles according to the invention, without departing from the scope of the following claims. Each of the features described as belonging to a possible embodiment can be achieved irrespective of the other embodiments described.




 
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