Title:
DIFFRACTIVE OPTICAL ELEMENT AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2012/164781
Kind Code:
A1
Abstract:
In a diffractive optical element having a structure in which a base body and an optical adjustment layer are bonded, defects such as cracking and separation occur in the optical adjustment layer if the strength of adhesion of the base body and the optical adjustment layer decreases. In this diffractive optical element (100), a plurality of anchor grooves (3) is formed in a planar second region (6) of a base body (1). A structure is used in which the depth of the outermost anchor groove among the plurality of anchor grooves (3) is less than the depth of the innermost anchor groove. In the base body (1) thus configured, an optical adjustment layer (9) is bonded so as to cover a first region (5), in which a diffraction grating (2) is formed, and the second region (6), in which the anchor grooves (3) are formed.
Inventors:
SUENAGA TATSUTOSHI
OKADA YUKA
MURATA AKIKO
OKADA YUKA
MURATA AKIKO
Application Number:
PCT/JP2012/000985
Publication Date:
December 06, 2012
Filing Date:
February 15, 2012
Export Citation:
Assignee:
PANASONIC CORP (JP)
SUENAGA TATSUTOSHI
OKADA YUKA
MURATA AKIKO
SUENAGA TATSUTOSHI
OKADA YUKA
MURATA AKIKO
International Classes:
G02B5/18; G02B3/00; G03B17/12
Foreign References:
| JP2010102000A | 2010-05-06 | |||
| JPH07113907A | 1995-05-02 | |||
| JP2009053271A | 2009-03-12 |
Other References:
None
Attorney, Agent or Firm:
OKUDA, SEIJI (JP)
Seiji Okuda (JP)
Seiji Okuda (JP)
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Claims: