US 11,867,920 B2
Beam splitting and combining device and electronic device
Ting-Wei Liang, Taichung (TW); Po-Yuan Huang, Taichung (TW); and Chih-Peng Wang, Taichung (TW)
Assigned to SINTAI OPTICAL (SHENZHEN) CO., LTD., Shenzhen (CN); and ASIA OPTICAL CO., INC., Taichung (TW)
Filed by Sintai Optical (Shenzhen) Co., Ltd., ShenZhen (CN); and Asia Optical Co., Inc., Taichung (TW)
Filed on Dec. 22, 2021, as Appl. No. 17/558,918.
Claims priority of application No. 202110021657.6 (CN), filed on Jan. 8, 2021; and application No. 202110162543.3 (CN), filed on Feb. 5, 2021.
Prior Publication US 2022/0221729 A1, Jul. 14, 2022
Int. Cl. G02B 27/10 (2006.01); G03B 21/20 (2006.01); G02B 27/14 (2006.01); G02B 5/04 (2006.01); H04N 23/16 (2023.01)
CPC G02B 27/1013 (2013.01) [G02B 5/04 (2013.01); G02B 27/14 (2013.01); H04N 23/16 (2023.01)] 15 Claims
OG exemplary drawing
 
1. A beam splitting and combining device, comprising:
a first prism comprising a first surface, a second surface and a third surface;
a second prism comprising a fourth surface, a fifth surface and a sixth surface; and
a first optical film formed between the second surface and the fifth surface;
wherein the fifth surface and the second surface are attached to each other;
wherein the third surface and the sixth surface are disposed in parallel or are coplanar;
wherein the first surface allows a beam in a first range of wavelengths to pass through;
wherein the fourth surface allows a beam in a second range of wavelengths to pass through;
wherein the first optical film allows the beam in the first range of wavelengths to pass through, and reflects the beam in the second range of wavelengths;
wherein the sixth surface allows the beams in the first or/and second ranges of wavelengths to pass through and reflects a beam in a third range of wavelengths;
wherein the beam in the first range of wavelengths is configured to pass through the first surface, the second surface, the first optical film, the fifth surface and the sixth surface in order or in reverse order, or is configured to pass through the first surface and the third surface in order or in reverse order.