US 12,282,119 B2
Micro-optics system using diffraction method
Yong Woo Kim, Gyeonggi-do (KR); and Jun Yuk Lee, Gyeonggi-do (KR)
Assigned to OPTOELEC CO., LTD, Gyeonggi-Do (KR)
Filed by OPTOELEC CO., LTD, Gyeonggi-do (KR)
Filed on Apr. 6, 2021, as Appl. No. 17/301,519.
Prior Publication US 2022/0011407 A1, Jan. 13, 2022
Int. Cl. G01C 3/08 (2006.01); G01S 7/481 (2006.01); G01S 17/894 (2020.01); G02B 26/08 (2006.01)
CPC G01S 7/4817 (2013.01) [G01S 17/894 (2020.01); G02B 26/0808 (2013.01); G02B 26/0833 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A micro-optics system using a diffraction method, the micro-optics system comprising a plurality of micro-optical elements having different inclination patterns,
wherein
the different inclination patterns are implemented such that a plurality of light rays incident from a light source are increasingly refracted by 1 degree in an outward direction from a center of the plurality of micro-optical elements, and
the different inclination patterns include a series of steps,
wherein:
the plurality of micro-optical elements comprise a first micro-optical element, a second micro-optical element, and a third micro-optical element,
the first micro-optical element comprises:
a first surface which is flat; and
a second surface which includes a first region, a second region, and a third region arranged with respect to the center, and
each of the first region, the second region, and the third region includes a first inclination pattern implemented such that the plurality of light rays are increasingly refracted in a range of 1 to 15 degrees from the center.