Title:
METHOD FOR MANUFACTURING STEREOSCOPIC IMAGE FORMATION DEVICE AND STEREOSCOPIC IMAGE FORMATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/017071
Kind Code:
A1
Abstract:
This method serves to manufacture a stereoscopic image formation device 10 through a process in which: a molding base material 21 formed from a first transparent synthetic resin is injection-molded onto one side of a plate body 13, the molding base material 21 comprising triangular cross-sectional protrusions 17 and triangular cross-sectional grooves 16 each having a tilted surface 15 and a vertical surface 14, the grooves 16 and the protrusions 17 being arranged alternately and in parallel; a vertical reflective surface 12 is formed on each vertical surface 14 by metal injection; a first and a second optical control panels 11, 11a thus obtained are placed over one another by fitting the surfaces thereof corresponding to the grooves and protrusions together with a second transparent synthetic resin interposed therebetween; and the resultant is cured and integrated and the stereoscopic image formation device 10 is formed as a result. In this method, the injection molding employs a mold 40 having a space 39 therein corresponding to the shape of the molding base material 21; a first synthetic resin 46 in a molten state is supplied to the space 39 of the mold 40, the temperature of which has been adjusted by being increased to a temperature at which the first synthetic resin 46 remains flowable, and the synthetic resin is caused to run through the edges 45 of the space 39 that forms the cross-sectional triangle of the protrusions 17 in the molding base material 21; the mold 40 is then subjected to rapid cooling; and the difference between refractive indexes η1, η2 of the first and second synthetic resins is set to 0.1 or less.
Inventors:
OTSUBO MAKOTO (JP)
Application Number:
PCT/JP2018/041731
Publication Date:
January 23, 2020
Filing Date:
November 09, 2018
Export Citation:
Assignee:
ASUKANET CO LTD (JP)
International Classes:
G02B5/08
Domestic Patent References:
| WO2009131128A1 | 2009-10-29 | |||
| WO2015033645A1 | 2015-03-12 | |||
| WO2009131128A1 | 2009-10-29 | |||
| WO2015033645A1 | 2015-03-12 |
Foreign References:
| JP6203978B1 | 2017-09-27 | |||
| JP2012247459A | 2012-12-13 | |||
| JP2001343507A | 2001-12-14 | |||
| JP2017161733A | 2017-09-14 | |||
| JP6203989B1 | 2017-09-27 | |||
| US20170017089A1 | 2017-01-19 | |||
| JPS623989B2 | 1987-01-28 | |||
| JPS623978B2 | 1987-01-28 |
Other References:
See also references of EP 3825740A4
Attorney, Agent or Firm:
NAKAMAE Fujio (JP)
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