Device for the positioning of optical elements with...

Details Device for the positioning of optical elements with... Device for the positioning of optical elements with...

2006-03-10

2009-11-10

Evans, F. L (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S334000

Reexamination Certificate

active

07616309

ABSTRACT:
The invention relates to a device for the positioning of optical elements with retractable stop enabling accurate positioning of an optical element selected among a plurality of optical elements, including a stand (1); a turret fitted with a element holder and a disc (4), said disc (4) being a ratchet wheel having a peripheral surface (5) fitted with a plurality of blocking means (6), each blocking means (6) corresponding to an optical element, a motor (7) and a crash stop (9) bearing against the peripheral surface of the disc (5). According to the invention the stop (9) contains an anti-friction element (13) in contact with the peripheral surface (5) of the ratchet wheel so that the retractable stop (9) moves according to the contour of the peripheral surface (5) of the ratchet wheel without any friction.

REFERENCES:
patent: 3822941 (1974-07-01), Roche et al.
patent: 4866477 (1989-09-01), Barry et al.
patent: 5280338 (1994-01-01), Drozdowicz et al.
patent: 5767965 (1998-06-01), Zhou et al.

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