Compact reflectometer
First Claim
1. A compact reflectrometer for providing quantitative measurement of reflection densities, said reflectometer comprisingmeans for supporting a generally planar test element in a predetermined plane, contacting the reflectometer,planar means on a major exterior surface of the reflectometer for orienting said predetermined plane generally horizontally when said planar means is placed on a rest surface,a light source constructed to project a beam of light centered on an axis of illumination,light detector means constructed to receive light centered on an axis of detection, said light source and said detector means being disposed with said axes each being generally parallel to said planar orienting means of the reflectometer,and reflecting means for (a) reflecting light from said source to a predetermined location in said predetermined plane, said source light traveling from said reflecting means along a first path;
- and (b) reflecting to said detector means only light that is diffusely reflected from a test element at said predetermined location in said predetermined plane, such diffusely reflected light traveling from said reflecting means along a second path;
said reflecting means, light source, and detector means being three dimensionally disposed so that said first and second paths do not lie in a common plane.
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Accused Products
Abstract
A thin, compact reflectometer is adapted to support and position a generally planar test element in a predetermined, generally horizontal plane during usage. The reflectometer includes a light source and a detector having major portions of their respective illumination and detection axes extending generally parallel to a planar reflectometer-positioning portion on one of two major surfaces of the reflectometer.
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Citations
8 Claims
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1. A compact reflectrometer for providing quantitative measurement of reflection densities, said reflectometer comprising
means for supporting a generally planar test element in a predetermined plane, contacting the reflectometer, planar means on a major exterior surface of the reflectometer for orienting said predetermined plane generally horizontally when said planar means is placed on a rest surface, a light source constructed to project a beam of light centered on an axis of illumination, light detector means constructed to receive light centered on an axis of detection, said light source and said detector means being disposed with said axes each being generally parallel to said planar orienting means of the reflectometer, and reflecting means for (a) reflecting light from said source to a predetermined location in said predetermined plane, said source light traveling from said reflecting means along a first path; - and (b) reflecting to said detector means only light that is diffusely reflected from a test element at said predetermined location in said predetermined plane, such diffusely reflected light traveling from said reflecting means along a second path;
said reflecting means, light source, and detector means being three dimensionally disposed so that said first and second paths do not lie in a common plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- and (b) reflecting to said detector means only light that is diffusely reflected from a test element at said predetermined location in said predetermined plane, such diffusely reflected light traveling from said reflecting means along a second path;
Specification