Title:
LINEAR POLARIZATION PURITY IMPROVING UNIT, LINEAR POLARIZATION PURITY IMPROVING DEVICE, OPTICAL MEASUREMENT DEVICE AND MEDICAL DEVICE
Document Type and Number:
Japanese Patent JP2014160175
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To propose a new method for improving the purity of linear polarization.SOLUTION: A linear polarization purity improving unit 1A comprises a circular polarization section 40, and a linear polarization section 50 that converts outgoing light from the circular polarization section 40 into linear polarization. The linear polarization purity improving unit 1A causes the linear polarization made incident upon the circular polarization section 40 to be ejected from the linear polarization section as linear polarization with higher linear polarization purity than the incident light.
Inventors:
IKEDA HIROMI
Application Number:
JP2013030873A
Publication Date:
September 04, 2014
Filing Date:
February 20, 2013
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G02B5/30; G01J4/04; G01N21/21
Domestic Patent References:
| JP2006258594A | 2006-09-28 | |||
| JPH11142322A | 1999-05-28 | |||
| JPS5196337A | 1976-08-24 | |||
| JP2004113434A | 2004-04-15 |
Attorney, Agent or Firm:
Yasushi Kuroda
Noboru Takekoshi
Inoue 1
Noboru Takekoshi
Inoue 1