Title:
OCULAR LENS AND OBSERVATION DEVICE INCLUDING THE SAME, AND IMAGING APPARATUS
Document Type and Number:
Japanese Patent JP2016051062
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an ocular lens having high optical performance in spite of being lightweight.SOLUTION: An ocular lens includes a resin lens having an aspherical lens surface, and is composed of five or more lenses. Lenses made of a glass material are arranged respectively on an object side and an observation side of the resin lens. When an Abbe number having a line d of a material of the resin lens as a reference is νd, the ocular lens satisfies 5.0<νd<30.0.SELECTED DRAWING: Figure 1
Inventors:
ABE HIROSHI
Application Number:
JP2014176292A
Publication Date:
April 11, 2016
Filing Date:
August 29, 2014
Export Citation:
Assignee:
CANON KK
International Classes:
G02B25/00; G02B13/18; G03B13/02
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa
Previous Patent: JP2016051061
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