Title:
POLARIZATION CHARACTERISTICS MEASURING METHOD
Document Type and Number:
Japanese Patent JP3227934
Kind Code:
B2
Abstract:
PURPOSE: To make possible highly accurate measurement of the degree of polarization and the extinction ratio by employing a polarizer, having a known degree of polarization or extinction ratio, as a reference polarizer in addition to a polarizer beingmeasured.
CONSTITUTION: Four types of intensity of transmitted light are measured, i.e., the intensity of transmitted light IA($0) for a unit polarizer A, the intensity IA (θ0+90°) when the polarizer A is rotated by 90' about the optical axis, the intensity TAB($0, $0) when the transmission axis of the polarizers A, B is set at a parallel Nicol position in same orientation as the IA(θO), and the intensity IAB(QO, &bottom +90°) when the transmission axis of the polarizer A is set in same orientation as the IA(θO) and that of the polarizer B is set at an orthogonal Nicol position in same orientation as the IA ($ 0+90°). The polarization characteristics of an unknown polarizer B are the determined by calculation.
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Inventors:
Masaru Kawada
Application Number:
JP24708093A
Publication Date:
November 12, 2001
Filing Date:
October 01, 1993
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
G01J4/00; G01M11/00; G01N21/21; (IPC1-7): G01M11/00; G01J4/00
Domestic Patent References:
| JP436631A | ||||
| JP6307982A | ||||
| JP587678A |
Attorney, Agent or Firm:
Yoshiaki Nishioka