Method and apparatus for automatic modulation of photo-emitter brightness in an optical encoder
A code strip, an optical encoder using such a strip and a method thereof are described. The code strip includes a calibration area. Light transmitted from a light source through the calibration area on the code strip is converted into an electrical calibration signal. This signal is a function of th...
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| creator | HAJI HUSSAIN HASSAN BIN RAJAIAH SEELA RAJ D |
| description | A code strip, an optical encoder using such a strip and a method thereof are described. The code strip includes a calibration area. Light transmitted from a light source through the calibration area on the code strip is converted into an electrical calibration signal. This signal is a function of the transparency of the calibration area. The brightness of the light source is automatically modulated to compensate for degradation of transparency of the calibration area. |
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| subjects | ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS TARIFF METERING APPARATUS TESTING TRANSPORTING |
| title | Method and apparatus for automatic modulation of photo-emitter brightness in an optical encoder |
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