Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
OPTICAL ELEMENT AND OPTICAL APPARATUS INCLUDING THE SAME
Document Type and Number:
Japanese Patent JP2016194609
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an optical element constituted of plural optical components which are joined with each other superior in environment resistance, particularly in heat tolerance, to provide an optical system having the same and an optical apparatus.SOLUTION: An optical element 1 includes: a first optical component 11; a second optical component 12 which is formed of an organic material and is joined with the first optical component 11; and a third optical component 13 which is joined with the second optical component 12. Defining the minimum diameter of the first optical component 11 in a cross section including the optical axis as φh; the diameter in a junction area with the minimum diameter in the junction areas of the first to third optical components as φc; and the maximum diameter of the second optical component 12 as φr, a condition formula of φh<φc≤φr is satisfied.SELECTED DRAWING: Figure 1

More Like This:
JP4650131Lens board and rear projector
JPH05100104COMPOSITE TYPE OPTICAL PARTS
WO/2017/063583MICRO OPTICAL-IMAGING FILM AND IMAGING APPARATUS
Inventors:
ISHIBASHI TOMOHIKO
Application Number:
JP2015074503A
Publication Date:
November 17, 2016
Filing Date:
March 31, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CANON KK
International Classes:
G02B3/00; G02B7/02
Domestic Patent References:
JP2554622B21996-11-13
JP2009169249A2009-07-30
JP2011102906A2011-05-26
JPH04329502A1992-11-18
JPS57138603A1982-08-27
JPH07132644A1995-05-23
JP2007199344A2007-08-09
JPS5772403U1982-05-04
Foreign References:
WO2013136972A12013-09-19
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa



 
Previous Patent: シリンダ装置

Next Patent: An optical element, optical apparatus which has it, and a manufacturing method