US 12,174,392 B2
Optical system
Chih-Wei Weng, Taoyuan (TW); Chao-Chang Hu, Taoyuan (TW); Cheng-Jui Chang, Taoyuan (TW); and Sin-Jhong Song, Taoyuan (TW)
Assigned to TDK TAIWAN CORP., Taoyuan (TW)
Filed by TDK TAIWAN CORP., Taoyuan (TW)
Filed on Sep. 14, 2023, as Appl. No. 18/467,375.
Claims priority of provisional application 63/406,916, filed on Sep. 15, 2022.
Prior Publication US 2024/0094542 A1, Mar. 21, 2024
Int. Cl. G02B 27/00 (2006.01); F21V 8/00 (2006.01); G02B 7/08 (2021.01); G02B 7/36 (2021.01); G02B 27/01 (2006.01); G02B 27/64 (2006.01); G03B 5/00 (2021.01); G06F 3/01 (2006.01); G09G 3/00 (2006.01); H01F 7/08 (2006.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); H04N 23/68 (2023.01)
CPC G02B 27/0176 (2013.01) [G02B 6/0006 (2013.01); G02B 6/0028 (2013.01); G02B 7/08 (2013.01); G02B 7/36 (2013.01); G02B 27/0172 (2013.01); G02B 27/0179 (2013.01); G02B 27/646 (2013.01); G03B 5/00 (2013.01); G06F 3/013 (2013.01); G09G 3/001 (2013.01); H01F 7/081 (2013.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); H04N 23/6812 (2023.01); G02B 2027/0112 (2013.01); G02B 2027/015 (2013.01); G02B 2027/0159 (2013.01); G02B 2027/0178 (2013.01); G02B 2027/0187 (2013.01); G02B 2207/101 (2013.01); G03B 2205/0076 (2013.01); G09G 2354/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An optical system, comprising:
a light source assembly used for generating a first light and a second light;
a light guiding element having a first surface facing an eye and used for transporting the first light and the second light; and
a first optical assembly disposed between the light guiding element and the light source assembly and on the first surface, and used for transporting the first light and the second light, wherein wavelengths of the first light and the second light are different,
wherein:
the first optical assembly comprises a first optical element;
the first optical element comprises a substrate, a plurality of first microstructures, and a plurality of second microstructures;
the first microstructures and the second microstructures are disposed on the substrate;
the first microstructures are used for diffracting the first light;
the second microstructures are used for diffracting the second light.