Arrangement for spectral dispersion of a bundle of light

Details Arrangement for spectral dispersion of a bundle of light Arrangement for spectral dispersion of a bundle of light

1978-02-07

1980-07-22

Tudor, Harold J.

Illumination

Light modifier

Refractor

350168, 362339, F21V 500

Patent

active

042142970

ABSTRACT:
The invention is in concern of an arrangement for producing artificial rainbows, particularly for use in planetaria, in which a bundle of light emitted from a light source and directed through an aperture upon a prism is dispersed by the latter and reflected at a cylindrical reflector. Due to the reflection at the cylindrical reflector the projected light bundle is of a rainbow shape, the radius thereof depends on the position of the cylindrical reflector relative to the prism.

REFERENCES:
patent: 1043009 (1912-10-01), Hoffman
patent: 2443258 (1948-06-01), Lindenblad

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