Publica
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Illumination device
| DE 1990-4011842 A: 19900412 |
| DE 1990-4011842 A: 19900412
WO 9116786 A1: 19911031 |
| DE 4011842 C2: 19930107 |
| H04N0005 |
|
| Deutsch |
| Patent, Elektronische Publikation |
| Fraunhofer IPA () |
Abstract
The description refers to an illumination device for objects which are filmed by a camera whose image signal is presented to an image processing device and which has at least one CCD image sensor, comprising a light source which controls a control unit by means of pulses. The invention is characterized by the fact that the light source has a light emitting diode array whose diodes receive at least one pulse of variable width selectively from the control unit during each image period.