Achromatic quarter-wave plate comprising three isosceles prisms

The present invention belongs to the field of structure design of optical element. Of the three isosceles prisms, the inverted first one and the inverted second one with the same base angle alpha have their sides adhered to the two sides of the third erect one with a base angle beta, and the angle b...

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Bibliographic Details
Main Authors ZHENGDE LU, HENIAN ZHU, WEIPING KE
Format Patent
LanguageEnglish
Published 05.07.2000
Edition6
Subjects
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Summary:The present invention belongs to the field of structure design of optical element. Of the three isosceles prisms, the inverted first one and the inverted second one with the same base angle alpha have their sides adhered to the two sides of the third erect one with a base angle beta, and the angle beta is equal to 2 alpha to 90 deg. The said firsta nd second prisms may have vertex angle truncated. The present invention has not only high light transmissivity, stable phase delay, accurate 90 deg phase delay and large effective clear aperture, but also relatively simple machining and testing process for mass production.
Bibliography:Application Number: CN1999127181