US 11,054,617 B2
Imaging optical lens having lenses of +−−−+− refractive powers
Chenxiyang Chen, Shenzhen (CN); Hiroyuki Teraoka, Shenzhen (CN); and Chunhuan Fang, Shenzhen (CN)
Assigned to AAC Optics (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Acoustic Technologies (Shenzhen) Co., Ltd., Shenzhen (CN)
Filed on Jul. 28, 2019, as Appl. No. 16/524,076.
Claims priority of application No. 201810871590.3 (CN), filed on Aug. 2, 2018.
Prior Publication US 2020/0041766 A1, Feb. 6, 2020
Int. Cl. G02B 13/00 (2006.01); G02B 9/62 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An imaging optical lens, comprising from an object side to an image side in sequence: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power,
wherein a focal length of the imaging optical lens is f, a focal length of the third lens is f3, a thickness on-axis of the first lens is d1, an Abbe number of the first lens is v1, an Abbe number of the second lens is v2, and the following relational expressions are satisfied:
−500≤f3/f≤−50;
0.20≤d1/f≤0.50; and
2.7≤v1/v2≤5.0.