Title:
応力複屈折性能基準を用いたレンズ設計方法
Document Type and Number:
Japanese Patent JP5731636
Kind Code:
B2
Abstract:
A method for designing an imaging lens having reduced susceptibility to thermally-induced stress birefringence, the imaging lens having first and second groups of lens elements located either side of an aperture stop, the method comprising: defining a set of lens design attributes; defining a set of lens performance criteria including a thermally-induced stress birefringence performance criterion; defining a first set of candidate glasses having a negligible susceptibility to thermal stress birefringence and a second set of candidate glasses having at most a moderate susceptibility to thermal stress birefringence; selecting glasses for lens elements that are located adjacent to the aperture stop from the first set of candidate glasses; selecting glasses for the remaining lens elements from the first or second sets of candidate glasses; and using a computer processor to determine a lens design for the imaging lens.
Inventors:
Beatley, Joseph Raymond
Kurtz, Andrew Frederick
Silverstein, Barry Dee
James, Mazzarella
Kurtz, Andrew Frederick
Silverstein, Barry Dee
James, Mazzarella
Application Number:
JP2013511214A
Publication Date:
June 10, 2015
Filing Date:
May 09, 2011
Export Citation:
Assignee:
Eastman Kodak Company
International Classes:
G02B13/00; G02B13/16
Domestic Patent References:
| JP2009536370A | ||||
| JP2006163369A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki