Telemicroscope with absorbing annular baffle

Details Telemicroscope with absorbing annular baffle Telemicroscope with absorbing annular baffle

1991-02-04

1992-06-09

Henry, Jon W.

Optical: systems and elements

Compound lens system

Microscope

359399, 359481, 359738, 359744, G02B 2120, G02B 2318, G02B 704, G02B 910

Patent

active

051212510

ABSTRACT:
A telemicroscope has a light absorbing and blocking annular baffle within the telemicroscope barrel. The baffle is positioned between the front and rear lenses and reduces glare in the telemicroscope by blocking and absorbing light which would ordinarily reflect off the inner surfaces of the telemicroscope barrel. The baffle has a knife-edge inner diameter and its surfaces are given a dull finish to enhance its light absorbing properties.

REFERENCES:
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patent: 3699471 (1972-10-01), Mulready et al.
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patent: 4540238 (1985-09-01), Edwards
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patent: 4831258 (1989-05-01), Paulk et al.
patent: 4877316 (1989-10-01), Edwards et al.
patent: 5004332 (1991-04-01), Edwards
C. Leinert et al., "Stray Light Suppression . . . ", Applied Optics, vol. 13, No. 3, Mar. 1974, pp. 556-562.
Smith, Modern Optical Engineering, New York: McGraw Hill, 1966, pp. 128-131.

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