发明名称 |
Eye tester using stimulating light - has brightness continuously varied according to mathematical function, contrast remains constant |
摘要 |
<p>Eye testing apparatus uses light to stimulate the eye or retina, and then obtain a graphical representation of the resulting signals. The brightness of the optical stimulator is continuously varied and the signals obtained are calculated according to a mathematical function, in dependence upon the brightness. The fixation light always has the same contrast against the background. Amplitude measurements are made at given time intervals, and the voltages resulting are indicated on a scale. The light source is intensity modulated by a signal by means of an optical/electronic converter to obtain a function signal. The original brightness signal is compared with the processed signal and a difference signal between maximum and minimum values is obtained and measured.</p> |
申请公布号 |
DE2709131(A1) |
申请公布日期 |
1978.08.31 |
申请号 |
DE19772709131 |
申请日期 |
1977.02.28 |
申请人 |
TAEUMER,REINER,DR.;ROHDE,NOTHART,DIPL.-PHYS. |
发明人 |
TAEUMER,REINER,DR.;ROHDE,NOTHART,DIPL.-PHYS. |
分类号 |
A61B5/0496;(IPC1-7):61B3/10;61B5/04 |
主分类号 |
A61B5/0496 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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