US 11,966,152 B2
Projector including color filters
Shingyu Kang, Seoul (KR); Kiso Bok, Seoul (KR); and Jaehoon Ahn, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/417,353
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Oct. 7, 2019, PCT No. PCT/KR2019/013112
§ 371(c)(1), (2) Date Jun. 22, 2021,
PCT Pub. No. WO2020/153573, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 10-2019-0008060 (KR), filed on Jan. 22, 2019.
Prior Publication US 2022/0075245 A1, Mar. 10, 2022
Int. Cl. G03B 21/20 (2006.01); G02B 5/26 (2006.01)
CPC G03B 21/204 (2013.01) [G02B 5/26 (2013.01); G03B 21/2066 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A projector, comprising:
a light source projecting a laser light;
a color disc rotating around a center thereof, wherein the color disc includes
a first color filter including a reflective part reflecting the laser light projected from the light source and a transmissive part transmitting the laser light;
a phosphor plate converting the laser light reflecting from the reflective part of the first color filter into a phosphorescence, wherein the color disc further includes
a second color filter including color films of different colors through which the phosphorescence passes; and
a display element projecting an image by being provided with the laser light transmitted by the transmissive part of the first color filter and the phosphorescence having passed through the color films of the second color filter,
wherein the color films are entirely disposed at a position corresponding to the reflective part of the first color filter.