Title:
IMAGE CAPTURING OPTICAL LENS
Document Type and Number:
Japanese Patent JP2022073840
Kind Code:
A
Abstract:
To provide an optical lens, in particular, an image capturing optical lens.SOLUTION: An image capturing optical lens comprises, in order from the object side to the image side, a first lens having positive refractive power, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, and satisfies the following conditional expressions: 0.95≤f/TTL, 3.20≤f2/f≤5.50, 0.30≤(R9+R10)/(R9-R10)≤1.00, where TTL represents a total optical length of the image capturing optical lens, f represents a focal length of the image capturing optical lens, f2 represents focal length of the second lens, R9 represents a central curvature radius of an object-side surface of the fifth lens, and R10 represents a central curvature radius of an image-side surface of the fifth lens. The image capturing optical lens offers good optical performance and satisfies the design requirements of a long focal length and extra thinness.SELECTED DRAWING: Figure 1
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Inventors:
WANG XIAOFENG
Application Number:
JP2020210868A
Publication Date:
May 17, 2022
Filing Date:
December 19, 2020
Export Citation:
Assignee:
AAC OPTICS SUZHOU CO LTD
International Classes:
G02B13/00; G02B13/18
Domestic Patent References:
| JP6805381B1 | 2020-12-23 | |||
| JP6754541B1 | 2020-09-16 | |||
| JP2019197088A | 2019-11-14 |
Foreign References:
| CN107085285A | 2017-08-22 | |||
| US20200132969A1 | 2020-04-30 | |||
| US20170052350A1 | 2017-02-23 | |||
| US20170045714A1 | 2017-02-16 | |||
| US20190056568A1 | 2019-02-21 |
Attorney, Agent or Firm:
Naoya Ohyuki
Shuji Watanabe
Shuji Watanabe
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