US 12,449,660 B2
Optical lens assembly and head-mounted electronic device
Ping-Yi Chen, Taichung (TW); Fei-Hsin Tsai, Taichung (TW); and Cong Ge, Guangdong Province (CN)
Filed by NEWMAX TECHNOLOGY CO., LTD., Taichung (TW)
Filed on Feb. 17, 2023, as Appl. No. 18/110,907.
Claims priority of application No. 111145788 (TW), filed on Nov. 30, 2022.
Prior Publication US 2024/0176116 A1, May 30, 2024
Int. Cl. G02B 27/01 (2006.01)
CPC G02B 27/0172 (2013.01) 22 Claims
OG exemplary drawing
 
1. An optical lens assembly comprising:
a first element group comprising:
a first lens group with positive refractive power, comprising one or two lenses;
a second element group comprising:
a second lens group with positive refractive power, comprising two or three lenses;
an optical element comprising, in order from a visual side to an image source side, an absorptive polarizer, a reflective polarizer and a first phase retarder; and
a partial-reflective-partial-transmissive element; and
a third element group comprising an image source plane;
wherein the first element group, the second element group and the third element group are arranged in order from the visual side to the image source side, a focal length of the first lens group is f_G1, a focal length of the second lens group is f_G2, a distance from a visual-side surface of the lens of the first lens group which is closest to the visual side, to an image source-side surface of the lens of the first lens group which is closest to the image source side, along an optical axis is CTG1, a distance from a visual-side surface of the lens of the second lens group which is closest to the visual side, to an image source-side surface of the lens of the second lens group which is closest to the image source side, along the optical axis is CTG2, a distance from the image source-side surface of the lens of the first lens group which is closest to the image source side, to the visual-side surface of the lens of the second lens group which is closest to the visual side, along the optical axis when the optical lens assembly focuses on a near point is T12_N, and the following conditions are satisfied: 0.10<f_G2/f_G1<1.44 and 1.11<(CTG1+CTG2)/T12_N<6.06.