发明名称 |
Endoscope illumination control device utilising screening shutter - has shutter driven by stepping motor with control system using look=up tables |
摘要 |
<p>The control system for an endoscope illumination source to illuminate an object field, includes the light screening shutter, a stepping motor to drive the screening shutter at regular predetermined intervals, and a device to measure the illumination level at each interval. A further device produces impulses within each interval, and another device determines the impulse count corresponding to the difference between required and actual light intensity. The correspondence between impulse count and light intensity is stored in a look-up table, allowing adjustment of the shutter angle.</p> |
申请公布号 |
DE19549831(B4) |
申请公布日期 |
2007.07.19 |
申请号 |
DE1995149831 |
申请日期 |
1995.08.08 |
申请人 |
PENTAX CORP. |
发明人 |
HONDA, RYOJI;TAKADA, MAKOTO;TAKAHASHI, TADASHI |
分类号 |
G02B23/24;A61B1/06;G02B26/02 |
主分类号 |
G02B23/24 |
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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