METHOD FOR MANUFACTURING OPTICAL ELEMENT, OPTICAL ELEMENT AND COMPOSITION FOR FORMING LOW REFRACTIVE INDEX LAYER

Title:

METHOD FOR MANUFACTURING OPTICAL ELEMENT, OPTICAL ELEMENT AND COMPOSITION FOR FORMING LOW REFRACTIVE INDEX LAYER

Document Type and Number:

Japanese Patent JP2011048024

Kind Code:

A

Abstract:

To provide a method allowing a refractive index of the resin layer to be adjusted and the minute shape to be molded, in the method for manufacturing an optical element having a resin layer on the surface of which a minute shape for performing optical path conversion is formed, and to provide the optical element obtained by this manufacturing method for a composition for forming a low refractive index layer which is useful for this manufacturing method.

The method for manufacturing the optical element includes an application process for applying a resin composition containing a resin and two or more solvents having different boiling points onto a transparent resin substrate 2 to form a coating film 3a, a first evaporation process for evaporating a part of two or more solvents included in the coating film 3 to form a resin film 3b having fluidity in a range for forming the minute shape and holding the shape after formation, a molding process for forming the minute shape on a surface of the resin film 3b and a second evaporation process for evaporating the solvents remaining in the resin film 3b to form a resin layer 3c.

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Inventors:

YOSHII MOTOYASU
SHIROYAMA YASUHISA
KOYANAGI TOMOHIRO
TAKEUCHI HIROAKI
SHIMATANI SATOSHI
TAKAGI TOSHIYA

Application Number:

JP2009194606A

Publication Date:

March 10, 2011

Filing Date:

August 25, 2009

Export Citation:

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Assignee:

SHARP KK
TOKYO OHKA KOGYO CO LTD

International Classes:

G02B5/02; B32B7/02; G02B1/11

Domestic Patent References:

JP2007105904A	2007-04-26
JP2001174608A	2001-06-29

Foreign References:

WO2009075201A1	2009-06-18
WO2008149748A1	2008-12-11

Attorney, Agent or Firm:

Sumio Tanai
Masatake Shiga
Suzuki Mitsuyoshi
Mitsunaga Igarashi

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