发明名称 |
Video imaging of eye to determine line of sight - using infrared flashes during open period of electronic shutter in CCD video camera |
摘要 |
An image of the eye is recorded in a predetermined spectral region by a conventional infrared-sensitive CCD video camera equipped with an electronic shutter for a min. exposure time of up to 0.1 ms. When the camera shutter is opened by a synchronisation pulse, the eye under examination is irradiated by a source of infrared radiation, such as a conventional stroboscopic flashlamp, through an infrared filter. ADVANTAGE - Video image unaffected by external light e.g. sunshine. Subject eye strain minimised.
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申请公布号 |
DE4122752(A1) |
申请公布日期 |
1993.01.21 |
申请号 |
DE19914122752 |
申请日期 |
1991.07.10 |
申请人 |
DORNIER GMBH, 7990 FRIEDRICHSHAFEN, DE |
发明人 |
SCHERBARTH, STEFAN, DR.-PHYS., 7997 IMMENSTAAD, DE |
分类号 |
A61B3/113 |
主分类号 |
A61B3/113 |
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