US 12,072,503 B2
Image display device and display device
Masanori Iwasaki, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 18/264,283
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Jan. 13, 2022, PCT No. PCT/JP2022/000927
§ 371(c)(1), (2) Date Aug. 4, 2023,
PCT Pub. No. WO2022/172677, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 2021-020604 (JP), filed on Feb. 12, 2021.
Prior Publication US 2024/0118546 A1, Apr. 11, 2024
Int. Cl. G02B 27/01 (2006.01); F21V 8/00 (2006.01); G02B 5/32 (2006.01); G02B 27/09 (2006.01); G02C 7/04 (2006.01); G02C 11/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 5/32 (2013.01); G02B 6/0036 (2013.01); G02B 27/0103 (2013.01); G02B 27/0955 (2013.01); G02C 7/04 (2013.01); G02C 11/10 (2013.01)] 19 Claims
OG exemplary drawing
 
15. An image display device, comprising:
at least one optical element unit including at least three optical elements facing each other,
wherein one optical element unit included in the at least one optical element unit includes a first optical element, a second optical element, and a third optical element,
an image is formed on a basis of image display light which transmits through the first optical element and is emitted to outside of the image display device,
the first optical element has a deflection function of deflecting incident light which has a predetermined wavelength and is incident on the first optical element at a predetermined incidence angle to a side of the first optical element on which the incident light is incident, and emits first diffracted light deflected by the deflection function,
the third optical element has a deflection function of deflecting the first diffracted light which has a predetermined wavelength and is incident on the third optical element at a predetermined incidence angle to a side of the third optical element on which the first diffracted light is incident, and emits third diffracted light deflected by the deflection function,
the second optical element has a lens function for the third diffracted light which has a predetermined wavelength and is incident on the second optical element at a predetermined incidence angle, and
a direction of the predetermined incidence angle of the incident light and a direction of a diffraction angle of the first diffracted light are different from a direction of a diffraction angle of the third diffracted light.