US 12,339,469 B2
Lens unit, method for producing lens spacer, and method for producing lens unit
Hiroki Takenaka, Tokyo (JP); Hiroyuki Hanato, Tokyo (JP); and Maki Kishimoto, Tokyo (JP)
Assigned to Daicel Corporation, Osaka (JP)
Filed by Daicel Corporation, Osaka (JP)
Filed on Dec. 28, 2022, as Appl. No. 18/089,690.
Claims priority of application No. 2021-214679 (JP), filed on Dec. 28, 2021; and application No. 2021-214840 (JP), filed on Dec. 28, 2021.
Prior Publication US 2023/0288614 A1, Sep. 14, 2023
Int. Cl. G02B 3/00 (2006.01); G02B 7/02 (2021.01); G02B 27/00 (2006.01); G03B 17/12 (2021.01)
CPC G02B 3/0075 (2013.01) [G02B 7/02 (2013.01); G02B 27/0018 (2013.01); G03B 17/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lens unit formed by joining a lens portion including a lens and a spacer portion including a through hole where light emitted from the lens passes through, wherein
the spacer portion includes, in an end surface of the spacer portion where the lens portion is joined, an opening portion of the through hole and an inner wall portion, the inner wall portion is a wall surface of an outer edge of the opening portion, and
the inner wall portion has a surface roughness greater than a surface roughness of an end surface of the spacer portion opposite to the end surface of the spacer portion where the lens portion is joined.