Adjustable conversion device for film thickness monitoring photoelectric signal
A photoelectric signal and conversion device technology, applied in signal transmission system, installation, optics, etc., can solve the problems of signal attenuation, large space occupation, complex circuit, etc., and achieve the elimination of film thickness signal loss and attenuation, reasonable structure design, and expansion The effect of adaptation range
Active Publication Date: 2008-01-23
HENAN COSTAR GRP CO LTD +1
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Problems solved by technology
In the existing technology, photomultiplier tubes are usually used in the light receiving and sensing devices used in photoelectric conversion devices, which are large in size and take up a lot of space, and the use of such components must be equipped with a high-voltage power supply, resulting in complicated circuits. high cost
Secondly, most of the focusing lenses in the receiving optical path of the sensor are fixed installations, so that the projection distance of the focal point of the lens cannot be adjusted. Attenuation, thus affecting the monitoring effect of the entire monitoring system
Method used
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[0015] Referring to Fig. 1, the adjustable film thickness monitoring photoelectric signal conversion device of the present invention is composed of two parts, an optical mirror box 601 and a signal conversion box 609, and the signal conversion box 609 is connected with the light beam exit end of the optical mirror box 601 by fasteners, The optical mirror box 601 is fixed on the beam exit end of the film thickness optical signal transmission component, and the focusing lens assembly that can be moved and adjusted in the axial direction is arranged in the mirror box. . On the box wall of the optical mirror box 601, a long slot hole 612 for adjusting the focusing lens assembly is correspondingly provided. When the wavelength bandwidth of the incident light needs to be changed, the parallel light separated by the optical signal transmission part is focused by the focusing lens 604, and the size of the focus spot can be determined according to the light receiving surface of the lig...
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The invention provides an adjustable film-thickness monitoring photoelectric signal converter for a monitoring system of optic film, which comprises an optic lens box and a signal converting box, the joining site between which is connected by a fastener. Wherein, the optic lens box is at the light-ray emitting end of the light-signal transmission component for film thickness, in which a focusing lens assembly that can move and adjust axially is provided; in the signal converting box, a photoelectric signal-converting circuit board, a stand for supporting the circuit board and a pressure bushing for the stand are provided. The invention can make all optic signals for film thickness be projected on the receiving surface of a sensor by movement and adjustment of the focusing lens, and eliminate any loss and attenuation in signals of film thickness. In addition, by a photoelectric signal converting and gaining circuit, the application range of the spectrum bandwidth of film-thickness signals can be enlarged, so as to improve the accuracy, steadiness and converting efficiency in converting signals.
Description
technical field [0001] The invention belongs to the technical field of optical coating monitoring, and relates to an adjustable film thickness monitoring photoelectric signal conversion device. Background technique [0002] In the optical coating monitoring system, the strength of the optical signal and the efficiency of photoelectric conversion play a very important role in the sensitivity and accuracy of the monitoring system. Therefore, enhancing the brightness of the beam, reducing the loss and attenuation in the process of optical signal transmission, and improving the sensitivity of the conversion system are the keys to the film thickness monitoring technology. In the existing technology, photomultiplier tubes are usually used in the light receiving and sensing devices used in photoelectric conversion devices, which are large in size and take up a lot of space, and the use of such components must be equipped with a high-voltage power supply, resulting in complicated ci...
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Login to View More IPC IPC(8): G02B1/10G02B7/02G08C25/00
Inventor 杨育兴党亚军赵升林张兰菊池和夫
Owner HENAN COSTAR GRP CO LTD