Retinal camera
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United States of America Patent
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Oct 16, 2001
Issued Date -
N/A
app pub date -
Jul 23, 1997
filing date -
Oct 11, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A retinal camera has an illuminating system for applying illuminating light to the fundus of an eye to be examined, a photographing system for photographing the fundus of the eye, the photographing system having a focusing lens, a projection system for projecting a focus detecting light beam onto the fundus of the eye by a fixed optical system, and a light position sensor for receiving the reflected light of the focus detecting light beam from the fundus of the eye through the focusing lens, the focus state of the photographing system being detected by the deviation of the light beam received by the light position sensor from a predetermined position.
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