Optical element assembly and method of manufacturing optical unit
AssigneeKonica Minolta Opto, Inc.
InventorTakashi Washizu
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Abstract
Disclosed are an optical element assembly comprising a base member in which occurrence of cracks in the base member upon cutting can be prevented and a method of manufacturing an optical unit. The optical element assembly comprises a base member and a plurality of lens members, wherein at least the base member of the optical element assembly is composed of an acryl resin having an alicyclic structure which is a polymer of a monomer represented by the following formula (1) in which linkage groups R2 and R3 lie between an atomic group A and R1OCO and between an atomic group A and OCOCR2, respectively. H2C═CR1COO—(R2)m-A-(R3)n—OCOCR4═CH2 (1)
Claims3
An optical element assembly comprising a base member and a plurality of lens members, wherein at least the base member of the optical element assembly is composed of an acryl resin having an alicyclic structure which is a polymer of a monomer represented by the following formula (1),
- H2C═CR1COO—R2-A-R3—OCOCR4═CH2 (1)
- wherein R1 and R4 independently represent a hydrogen atom, a halogen atom, a hydroxyl group or an alkyl group having a carbon atom number of from 1 to 10;
- R2 and R3 represent a linkage group;
- and “A” is a group represented by the following formula (2) or (3),
- wherein p is an integer of 1 or 2;
- q is an integer of 0 or 1;
- and R5 and R6 independently represent a hydrogen atom, a halogen atom, a hydroxyl group or an alkyl group having a carbon atom number of from 1 to 10.
A method of manufacturing an optical unit comprising the steps of:
- disposing an optical element assembly comprising a base member and a plurality of lens members between an aperture array having an opening section at a position corresponding to each of the plurality of lens members and a spacer array having an opening section at a position corresponding to each of the plurality of lens members, thereby preparing a lens unit array;
- and
- cutting the lens unit array,
- wherein at least the base member of the optical element assembly is composed of an acryl resin having an alicyclic structure which is a polymer of a monomer represented by the following formula (1),
- H2C═CR1COO—R2-A-R3—OCOCR4═CH2 (1)
- wherein R1 and R4 independently represent a hydrogen atom, a halogen atom, a hydroxyl group or an alkyl group having a carbon atom number of from 1 to 10;
- R2 and R3 represent a linkage group;
- and “A” is a group represented by the following formula (2) or (3),
- wherein p is an integer of 1 or 2;
- q is an integer of 0 or 1;
- and R5 and R6 independently represent a hydrogen atom, a halogen atom, a hydroxyl group or an alkyl group having a carbon atom number of from 1 to 10.
Dependencies are inferred from the claim text.