Title:
OPTICAL ELEMENT AND OPTICAL SYSTEM HAVING THE SAME
Document Type and Number:
Japanese Patent JP2017134362
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an optical element capable of reducing occurrence of flare and/or ghost irrespective of incident direction of light.SOLUTION: After forming a first convexoconcave structure 11 on a substrate 1, a second convexoconcave structure 12 is formed between the first convexoconcave structure 11 and the substrate 1. Each of the first convexoconcave structure 11 and the second convexoconcave structure 12 has a convexoconcave structure and each of which has an extinction coefficient larger than that of the substrate 1.SELECTED DRAWING: Figure 1
Inventors:
OKUNO TAKEHARU
Application Number:
JP2016016450A
Publication Date:
August 03, 2017
Filing Date:
January 29, 2016
Export Citation:
Assignee:
CANON KK
International Classes:
G02B5/00; G02B1/118; H01L27/14
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa
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