Resin precursor composition for optical materials, optical element obtained from the composition, and diffractive optical element configured using the optical element

Patent metadata

Field	Value
Publication number	US-10577446-B2
Application number	US-201816207617-A
Country	US
Kind code	B2
Filing date	Dec 3, 2018
Priority date	Aug 26, 2014
Publication date	Mar 3, 2020
Grant date	Mar 3, 2020

Abstract

Low refractive index and high dispersion material which can produce a bonded-multilayer DOE having an excellent optical performance is obtained, and the optical member using this is obtained. The resin precursor for optical materials obtained through the addition reaction of the composite containing a di (meth) acrylate shown in the following Chemical Expression 1.

where, R═H or CH 3 , and m+n=1 to 10.

First claim

The invention claimed is:

1. A diffractive optical element comprising :
a first optical element obtained by curing a resin precursor composite containing
a bisphenol AF ethyleneoxide modified di(meth)acrylate which is defined by a Chemical Expression 1-shown below, and
0. 05 to 3 wt % of a polymerization initiator with respect to an amount of the bisphenol AF ethyleneoxide modified di(meth)acrylate; and

a second optical element obtained by curing a resin precursor composite containing a thiol which is defined by a Chemical Expression 2-shown below and a di(meth)acrylate; and
a diffraction grating formed at a boundary surface of the first optical element and the second optical element which are laminated with each other,

where, R ═H or CH 3 , and m+n =1 to 10;

where, m+n =1 to 6.

2. The diffractive optical element according to claim 1 , wherein in the bisphenol AF ethyleneoxide modified di(meth)acrylate- defined by the Chemical Expression 1, m =1, and n =1.

3. The diffractive optical element according to claim 1 , wherein the di(meth)acrylate-is defined by a Chemical Expression 3-shown below,

where, R ═H or CH 3 , and m+n =1 to 10.

4. A diffractive optical element comprising:
a first optical element obtained by curing a resin precursor composite containing
a bisphenol AF ethyleneoxide modified di(meth)acrylate-which is defined by a Chemical Expression 1-shown below, and
0.07 to 0.7 wt % of a polymerization initiator with respect to an amount of the bisphenol AF ethyleneoxide modified di(meth)acrylate; and

a second optical element obtained by curing a resin precursor composite containing a thiol which is defined by a Chemical Expression 2-shown below and a di(meth)acrylate; and
a diffraction grating formed at a boundary surface of the first optical element and the second optical element, which are laminated with each other,

where, R ═H or CH 3 , and m+n =1 to 10;

where, m+n =1 to 6.

5. The diffractive optical element according to claim 4 , wherein in the bisphenol AF ethyleneoxide modified di(meth)acrylate-defined by the Chemical Expression 1, m =1, and n =1.

6. The diffractive optical element according to claim 4 , wherein the-di(meth)acrylate-is defined by a Chemical Expression 3-shown below,

where, R ═H or CH 3 , and m+n =1 to 10.

Assignees

• Nikon Corp

Inventors

• Nishimura Shiho
• Inokuchi Yosuke

Classifications

• C07C69/54

  Acrylic acid esters; Methacrylic acid esters · CPC title

• C08F122/1006

  of polyhydric alcohols or polyhydric phenols, e.g. ethylene glycol dimethacrylate · CPC title

• G02B1/04

  made of organic materials, e.g. plastics (G02B1/08 takes precedence) · CPC title

• C08G75/045

  from mercapto compounds and unsaturated compounds · CPC title

• C07C69/003

  Esters of saturated alcohols having the esterified hydroxy group bound to an acyclic carbon atom · CPC title