Optical scanner using plane linear diffraction gratings on a rot

Details Optical scanner using plane linear diffraction gratings on a rot Optical scanner using plane linear diffraction gratings on a rot

1979-05-31

1981-09-15

Corbin, John K.

350 62, 350 67, 350162R, 350320, G02B 2717

Patent

active

042893712

ABSTRACT:
An optical scanning system including a spinner containing at least one plane linear diffraction grating. As the spinner is rotated, a plane reconstruction wave of wavelength .lambda..sub.r is directed onto the grating creating a diffracted wavefront which can be focused onto an image plane. The grating is constructed so that the ratio of the reconstruction wavelength .lambda..sub.r to the grating period d is a value lying between the range of 1 and 1.618. The angles of incidence and diffraction of the reconstruction wavefront in a preferred embodiment, approximate 45.degree..

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