US 9,810,877 B2
Imaging lens system and imaging device
Yutaka Makino, Ibaraki (JP); and Takashi Sugiyama, Ibaraki (JP)
Assigned to HITACHI MAXELL, LTD., Osaka (JP)
Appl. No. 15/22,117
Filed by HITACHI MAXELL, LTD., Ibaraki-shi, Osaka (JP)
PCT Filed Oct. 3, 2014, PCT No. PCT/JP2014/005050
§ 371(c)(1), (2) Date Mar. 15, 2016,
PCT Pub. No. WO2015/049877, PCT Pub. Date Apr. 9, 2015.
Claims priority of application No. 2013-208450 (JP), filed on Oct. 3, 2013.
Prior Publication US 2016/0223782 A1, Aug. 4, 2016
Int. Cl. G02B 9/60 (2006.01); G02B 13/00 (2006.01); G02B 13/04 (2006.01); G02B 9/58 (2006.01); G02B 9/34 (2006.01); G02B 27/00 (2006.01)
CPC G02B 9/60 (2013.01) [G02B 9/34 (2013.01); G02B 9/58 (2013.01); G02B 13/004 (2013.01); G02B 13/006 (2013.01); G02B 13/0045 (2013.01); G02B 13/04 (2013.01); G02B 27/0025 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An imaging lens system consisting of:
in order from an object side, a first lens made of a negative meniscus lens having a convex surface facing the object side, a second lens made of a positive lens having a convex surface facing the object side, a third lens made of a negative lens having a concave surface facing an image side, a fourth lens made of a positive lens having a convex surface facing the object side, and a fifth lens made of a negative meniscus lens having a concave surface facing the image side, wherein:
an aperture stop is arranged on the object side or the image side of the second lens, and
the lens surface on the image side of the third lens and the lens surface on the object side of the fourth lens are bonded to each other.