OPTICAL DEVICE AND METHOD FOR ASSEMBLING THE SAME, HOLOGRAM DIFFRACTION GRATING, DISPLAY DEVICE, AND ALIGNMENT DEVICE

Japanese Patent JP2015175967

A

PROBLEM TO BE SOLVED: To provide a method for assembling an optical device capable of surely and accurately performing the positioning of two hologram diffraction gratings.SOLUTION: In a method for assembling an optical device configured of a light guide plate 121 and first and second hologram diffraction gratings 131 and 135, and equipped with first deflection means 130 and second deflection means, first A and first B alignment marks 134A and 134B arranged in the first hologram diffraction grating 131 and second A and second B alignment marks 138A and 138B arranged in the second hologram diffraction grating 135 are optically detected, and a first straight line Lconnecting the first A and second A alignment marks and a second straight line Lconnecting the first B and second B alignment marks are obtained, and relative positioning between the first and second hologram diffraction gratings 131 and 135 is performed such that an angle θmade by the first and second straight lines L, Lbecomes within a specific value.

AKUTSU KATSUYUKI
NAGASAKI HIDEO
KAJIO YUSUKE
MIZUSAWA TAKU
FUDA DAISUKE
TOKUYAMA KAZUTATSU

JP2014052043A

October 05, 2015

March 14, 2014

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SONY CORP

G02B27/02; G02B5/32

JP2002162598A	2002-06-07
JPH0968705A	1997-03-11
JP2008098208A	2008-04-24
JP2004136569A	2004-05-13
JP2012159856A	2012-08-23
JPH11305043A	1999-11-05
JP2005249855A	2005-09-15

WO2008111214A1	2008-09-18
WO2005093493A1	2005-10-06

Takahisa Yamamoto
Masaaki Yoshii

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