Device for optically measuring the shading of translucent panes
First Claim
1. A device for measuring the shading of a translucent pane having an exterior side and an interior side, comprising:
- first and second photoelectric sensor means for measuring unattenuated daylight and attenuated daylight, respectively, and generating an output signal proportional thereto, each of said sensor means having a photosensitive surface and a spectral sensitivity substantially corresponding to the spectral sensitivity of the human eye;
first mounting means for mounting said first sensor means on said exterior side of the pane with said photosensitive surface of said first sensor means facing away from said exterior side;
second mounting means for mounting said second sensor means on the interior side of the pane with said photosensitive surface of said second sensor means facing the interior side;
a housing; and
electronic circuit means disposed in said housing and electrically connected to said first and second sensor means for calculating the difference of said output signals of said first and second sensor means, calculating the ratio of the difference of said output signals to said signal from said first sensor means, and displaying the ratio as a reference value.
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Accused Products
Abstract
A device for measuring the shading of a translucent pane having an exterior side and an interior side comprising first and second photoelectric sensors for measuring unattenuated daylight, each of the sensors having a photosensitive surface and a spectral sensitivity substantially corresponding to the spectral sensitivity of the human eye and generating an output signal proportional to the intensity of the measured daylight, a first mounting element for mounting the first sensor on the exterior surface with the photosensitive surface of the first sensor facing away from the exterior surface, a second mounting element for mounting the second sensor on the interior surface with the photosensitive surface of the second sensor facing the interior surface, a housing, and an electronic circuit disposed in the housing and electrically connected to the first and second sensors for calculating the difference of the output signals of the first and second sensors, calculating the ratio of the difference to the signal from the first sensor, and displaying the ratio as a reference value.
47 Citations
14 Claims
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1. A device for measuring the shading of a translucent pane having an exterior side and an interior side, comprising:
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first and second photoelectric sensor means for measuring unattenuated daylight and attenuated daylight, respectively, and generating an output signal proportional thereto, each of said sensor means having a photosensitive surface and a spectral sensitivity substantially corresponding to the spectral sensitivity of the human eye; first mounting means for mounting said first sensor means on said exterior side of the pane with said photosensitive surface of said first sensor means facing away from said exterior side; second mounting means for mounting said second sensor means on the interior side of the pane with said photosensitive surface of said second sensor means facing the interior side; a housing; and electronic circuit means disposed in said housing and electrically connected to said first and second sensor means for calculating the difference of said output signals of said first and second sensor means, calculating the ratio of the difference of said output signals to said signal from said first sensor means, and displaying the ratio as a reference value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification