US 11,656,460 B2
Method of manufacturing optical device with first and second optical elements having reflective units
Jeong Hun Ha, Seoul (KR)
Assigned to LETINAR CO., LTD, Seoul (KR)
Appl. No. 16/767,686
Filed by LETINAR CO., LTD, Seoul (KR)
PCT Filed Nov. 29, 2018, PCT No. PCT/KR2018/014934
§ 371(c)(1), (2) Date May 28, 2020,
PCT Pub. No. WO2019/107959, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 10-2017-0162088 (KR), filed on Nov. 29, 2017; and application No. 10-2018-0150553 (KR), filed on Nov. 29, 2018.
Prior Publication US 2020/0386995 A1, Dec. 10, 2020
Int. Cl. G02B 27/01 (2006.01); G02B 1/04 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 1/04 (2013.01); G02B 2027/0194 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A method of manufacturing an optical device, the method comprising:
preparing a first optical element and a second optical element each having a plurality of pairs of corresponding surfaces;
forming a plurality of reflective units on each of the surfaces of the first optical element out of the plurality of pairs of corresponding surfaces; and
forming an optical device by bringing the first optical element and the second optical element into close contact with each other and fastening the first optical element and the second optical element to each other,
wherein each of the plurality of reflective units is made of a metal material and has a size of 8 mm or less, and
wherein the plurality of reflective units having the size of 8 mm or less are formed on each of the surfaces of the first optical element by mask deposition so that the plurality of reflective units are disposed on each of the surfaces of the first optical element as to be spaced apart from each other and to form an array.