The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 1990
Filed:
Dec. 05, 1988
Kevin P McGuire, Rochester, NY (US);
James D McKay, Penfield, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
There is disclosed a variable brightness light generator embodied in apparatus for exposing photographic film for test purposes. The generator includes a spherical mirror, a lamp at the center of the spherical form of the mirror and a modulator located between the lamp and the mirror for modulating the brightness of the image of the lamp created on the lamp by the mirror. The intensity of the light issuing from the lamp is sensed by a spectroradiometer which produces signals used in controlling the modulator whereby the intensity may be kept constant. The color temperature of the lamp is controlled under the influence of signals from the spectroradiometer. The exposing apparatus also includes a plurality of filters selectively insertable in the light path for modifying the intensity and color of the light incident on the film.