Cam filter wheel

Optics: measuring and testing – Range or remote distance finding – With photodetection

Patent

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Details

350164, 350318, 356418, G02B 522

Patent

active

041769163

ABSTRACT:
A cam filter wheel apparatus is disclosed for tilting interference filters in order to achieve variation in the light wavelength transmitted by each filter. The wheel apparatus contains a number of filters each mounted so as to pivot and change its inclination with respect to an incident light beam as the filter wheel rotates each filter through the light path. The pivot motion is achieved by a cam follower associated with each filter which rides on a stationary cam track.

REFERENCES:
patent: 2988932 (1961-06-01), Swanson
patent: 3105215 (1963-09-01), Seibold
patent: 3765775 (1973-10-01), Ganssle et al.
patent: 3776642 (1973-12-01), Anson et al.
patent: 3861788 (1975-01-01), Webster
patent: 3877818 (1975-04-01), Button et al.
patent: 4017191 (1977-04-01), Bunge
patent: 4082464 (1978-04-01), Johnson, Jr.
patent: 4084909 (1978-04-01), Mathisen

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