US 12,461,345 B2
Optical lens assembly
Chuanbo Dong, Fujian (CN); Qingzhi Zhu, Fujian (CN); Ou Zhou, Fujian (CN); and Hung-Chien Hsieh, Fujian (CN)
Assigned to GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD., Fujian (CN)
Filed by GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD., Fujian (CN)
Filed on Oct. 3, 2023, as Appl. No. 18/479,838.
Application 18/479,838 is a continuation of application No. 17/115,796, filed on Dec. 9, 2020, abandoned.
Claims priority of application No. 202011015295.1 (CN), filed on Sep. 24, 2020.
Prior Publication US 2024/0094510 A1, Mar. 21, 2024
Int. Cl. G02B 13/00 (2006.01); G02B 9/62 (2006.01); G02B 27/00 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01); G02B 27/0025 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical lens assembly, sequentially comprising a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element from a first side to a second side along an optical axis, wherein the first side is a light-exiting side, the second side is a light-incident side, the optical lens assembly is used for projection, after multiple imaging rays sequentially pass through the sixth lens element, the fifth lens element, the fourth lens element, the third lens element, the second lens element and the first lens element and exit from the optical lens assembly, and each of the first lens element to the sixth lens element comprises a first side surface that faces the first side and allows the multiple imaging rays to pass through, and a second side surface that faces the second side and allows the multiple imaging rays to pass through;
when one of the first side surface and the second side surface has a transition point, at which a line tangent to the transition point is perpendicular to the optical axis, a region located radially outside of a farthest Nth transition point from the optical axis to an optical boundary of the one of the first side surface and the second side surface is defined as a periphery region;
when one of the first side surface and the second side surface has no transition point, a region between 50%-100% of a distance between the optical axis and the optical boundary of the one of the first side surface and the second side surface is defined as a periphery region;
an optical axis region of the first side surface of the sixth lens element is concave;
an optical axis region of the first side surface of the fourth lens element is convex;
wherein the optical lens assembly conforms to a following conditional expression:
T2/Tavg≥1.500; and
(T1+G12+T2)/G23≤6.800,
where T1 is a thickness of the first lens element on the optical axis, T2 is a thickness of the second lens element on the optical axis, Tavg is an average thickness of all of the lens elements of the optical lens assembly on the optical axis, G12 is an air gap between the first lens element and the second lens element on the optical axis, and G23 is an air gap between the second lens element and the third lens element on the optical axis.