Spectrographic apparatus

Details Spectrographic apparatus Spectrographic apparatus

1977-02-07

1979-02-27

McGraw, Vincent P.

Optics: measuring and testing

By shade or color

With color transmitting filter

356404, 350317, 355 32, 356420, G01J 348, G01J 346, G02B 522, G01J 310

Patent

active

041416538

ABSTRACT:
The device is housed in an enclosure impervious to light of a selected frequency spectrum. The housing contains a light source of the same frequency spectrum and a pair of translatable filter holders. Each of the filter holders contain different chromic absorption filters positioned in a side-by-side relationship in the direction of translation. The chromic absorption filters are arranged with a color filter on one end of the holder and its color filter complement on the other end. A second embodiment contains an achromic or neutral filter positioned between the complementary chromic filters. The filters of each holder have vertical alignment when one is superposed over the other. A mask is provided between the filter holding means for allowing light from the source to pass through an area equal to approximately the width of one chromic filter. Thus, this light is then directed toward a color positive for correct light balancing. A viewing port for operator viewing covered with etched glass or the like receives reflected light from the color positive through a variable area aperture. A scale is provided to reference the position of each filter slide when translated for correct color balancing.

REFERENCES:
patent: 3083614 (1963-04-01), Veit
patent: 3885879 (1975-05-01), Louder et al.

Affiliated with

Also associated with

Rating

Spectrographic apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spectrographic apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectrographic apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-720412