Optic-purpose precursor composition, optic-purpose resin, optical element, and optical article
AssigneeNikon Corporation
InventorsToru Nakamura, Akiko Miyakawa
Life of this patent
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Abstract
The optical element of the present invention has a first member and a second member which have been joined in close contact, and has nd1>nd2 and (nF1−nC1)<(nF2−nC2), where the first member is formed of a resin having both a benzene ring and a fluorine atom, or the second member is formed of a resin having an alicyclic structure. It also makes use of an optic-purpose resin precursor composition prepared by mixing a first resin precursor having nd<1.50 and (nF−nC)>0.003 in an uncured state and a second resin precursor having nd<1.62 and (nF−nC)>0.010.
Claims8
An optic-purpose resin obtained by curing a mixture of
- at least a first resin precursor having d-line refractive index nd<1.50 and 0.003<(F-line refractive index nF-C-line refractive index nC) in an uncured state, and
- a second resin precursor having d-line refractive index nd<1.62 and 0.010<(F-line refractive index nF-C-line refractive index nC) in an uncured state;
- said first resin precursor not containing any of a benzene ring, a sulfur atom, a chlorine atom, a bromine atom and an iodine atom, having at least one of any of an acrylic group, a methacrylic group and a vinyl group;
- and
- said second resin precursor not containing any of a sulfur atom and a halogen atom, and having at least one of any of an acrylic group, a methacrylic group and a vinyl group.
An optic-purpose resin obtained by curing a mixture of
- at least a first resin precursor having d-line refractive index nd<1.50 and 0.003<(F-line refractive index nF-C-line refractive index nC) in an uncured state, and
- a second resin precursor having d-line refractive index nd<1.62 and 0.010<(F-line refractive index nF-C-line refractive index nC) in an uncured state;
- said first resin precursor being represented by the following compositional formula (1) and having at least one polymerizable functional group in the molecule;
- Cm1Hn1Op1Nq1Fr1 (1)
- wherein
- m1 and n1 are each an integer of 5 or more;
- p1 and q1 are each an integer of 0 or 1 or more and m1 or less;
- and
- r1 is an integer of 0 or 1 or more and (n1×2) or less;
- and
- said second resin precursor being represented by the following compositional formula (2) and having at least one polymerizable functional group in the molecule and at least one benzene ring in the molecule;
- CsHtOuNv (2)
- wherein
- s and t are each an integer of 5 or more, and
- u and v are each an integer of 0 or 1 or more and s or less.
Dependencies are inferred from the claim text.