US 12,449,571 B2
Imaging lens system, image capturing module and electronic device
Chun-Tang Tsai, Taichung (TW); Yu Chen Lai, Taichung (TW); and Ming-Ta Chou, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on May 6, 2024, as Appl. No. 18/656,296.
Application 18/656,296 is a continuation of application No. 17/369,631, filed on Jul. 7, 2021, granted, now 12,007,589.
Claims priority of application No. 110117582 (TW), filed on May 14, 2021.
Prior Publication US 2024/0377560 A1, Nov. 14, 2024
Int. Cl. G02B 5/00 (2006.01); G02B 7/02 (2021.01)
CPC G02B 5/005 (2013.01) [G02B 7/021 (2013.01); G02B 7/028 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An imaging lens system, comprising:
a first lens element, having an optically effective region, and an imaging optical path of the imaging lens system passing through the optically effective region;
an aperture element, surrounding the imaging optical path and comprising an inner surface, and the aperture element facing and in physical contact with one side of an object side and an image side of the first lens element; and
a second lens element, disposed on the aperture element and in physical contact with the inner surface;
wherein one side of the aperture element in physical contact with the first lens element comprises:
a first conical surface, surrounding the imaging optical path; and
a second conical surface, surrounding the imaging optical path, and the second conical surface located closer to the imaging optical path than the first conical surface to the imaging optical path;
wherein when the imaging lens system is in a first environment condition, the first conical surface is in physical contact with the first lens element, the second conical surface is spaced apart from the first lens element, and the aperture element is aligned with the first lens element;
wherein when the imaging lens system is in a second environment condition, the second conical surface is in physical contact with the first lens element, the first conical surface is spaced apart from the first lens element, and the aperture element is aligned with the first lens element;
wherein the first environment condition and the second environment condition have at least one of the following relations:
a temperature dependent relation, wherein a temperature of the first environment condition is Ta, a temperature of the second environment condition is Tb, and the following condition is satisfied: 6 K≤|Ta−Tb|≤198 K; and
a humidity dependent relation, wherein a relative humidity of the first environment condition is RHa, a relative humidity of the second environment condition is RHb, and the following condition is satisfied: 14%≤|RHa−RHb|≤81%.