On-axis achromatic quarterwave retarder prism

Details On-axis achromatic quarterwave retarder prism On-axis achromatic quarterwave retarder prism

1982-10-12

1985-04-30

Corbin, John K.

350402, G02F 100

Patent

active

045140472

ABSTRACT:
A quarterwave retarder prism such as can be used in optical recording has a shape similar to a dove prism, and has three internal reflections, with the retarder prism designed to have the emerging light beam on the same axis or collinear with the entering light beam such that the accumulated phase retardation in the device is one quarterwave over a wide range of wavelengths of light.

REFERENCES:
patent: 3635563 (1972-01-01), Mouchart
patent: 3969573 (1976-07-01), Bouwhuis et al.
patent: 4379622 (1983-04-01), Fischer et al.
J. M. Bennett, "A Critical Evaluation of Rhomb-Type Quarterwave Retarders", Applied Optics, Sep. 1970, vol. 9, No. 9, pp. 2123-2129.

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