Optical: systems and elements – Optical aperture or tube – or transparent closure
Patent
1992-03-05
1992-12-15
Ben, Loha
Optical: systems and elements
Optical aperture or tube, or transparent closure
359896, 359801, 359806, G02B 700
Patent
active
051722798
ABSTRACT:
An elongated enclosure includes a number of apertures through which a film must be precisely viewed. A slider receives a removable film holder into which a film, such as a 35 mm slide is positioned. A precision recirculating bearing assembly provides accurate and smooth motion of the slider within the housing. A number of alignment components are located in the device to repeatedly and accurately position the film, relative to the apertures. Thus, a laser beam or optical axis can repeatedly and precisely pass through the same point of the image as it appears in a corresponding aperture.
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Leib Kenneth G.
Sullivan Edward V.
Ben Loha
Grumman Aerospace Corporation
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