US 11,719,909 B2
Optical lens
Yen-Chen Chiang, New Taipei (TW)
Assigned to ABILITY ENTERPRISE CO., LTD., New Taipei (TW)
Filed by ABILITY ENTERPRISE CO., LTD., New Taipei (TW)
Filed on May 26, 2020, as Appl. No. 16/883,126.
Claims priority of application No. 108125965 (TW), filed on Jul. 23, 2019.
Prior Publication US 2021/0026108 A1, Jan. 28, 2021
Int. Cl. G02B 9/60 (2006.01); G02B 13/00 (2006.01)
CPC G02B 9/60 (2013.01) [G02B 13/0045 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical lens, in order from an object side to an image-forming side, comprising:
a first lens having negative refractive power;
a second lens having positive refractive power, wherein R3 is a curvature radius of a second object-side surface of the second lens, R4 is a curvature radius of a second image-side surface of the second lens;
a third lens having positive refractive power;
a fourth lens having positive refractive power; and
a fifth lens having negative refractive power, wherein H is a distance between an outer edge of a fifth image-side surface of the fifth lens and an optical axis of the optical lens, the fifth image-side surface has an inflection point, h is a distance between the inflection point and the optical axis, and the optical lens satisfies at least one of the following conditions: 0.3≤h/H≤0.8 and 0<|R3/R4|≤0.03.