发明名称 |
Thickness measurement of cylindrical objects, wire etc. - by determining attenuation of parallel light beam passing through measurement vol. via rectangular aperture and lens |
摘要 |
<p>A device measuring the thickness or dia. of wires, threads, fibres and cylindrical objects of approx. circular cross-section uses a photodetector determining attenuation of a parallel beam. It achieves a measurement accuracy of 0.1 per cent. A parallel light beam passing through the measurement vol is limited by an approx. rectangular aperture from which it passes to the detector via a lens. The detector output is compared with that of a detector receiving a reference part of the beam in an amplifier used to regulate the light source power to give a defined reference intensity.</p> |
申请公布号 |
DE2818789(A1) |
申请公布日期 |
1979.11.08 |
申请号 |
DE19782818789 |
申请日期 |
1978.04.28 |
申请人 |
SCHULZ,WOLFGANG,DIPL.-PHYS.DR.-ING. |
发明人 |
SCHULZ,WOLFGANG,DIPL.-PHYS.DR.-ING. |
分类号 |
G01B11/10;(IPC1-7):01B11/02 |
主分类号 |
G01B11/10 |
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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