Electric filter light modulation apparatus

A dimming device and filter technology, applied in installation, optics, optical components, etc., can solve the problems of impossible and inconvenient dimming, and achieve the effects of easy control, low noise, and improved dimming efficiency
CN101216587AInactive Publication Date: 2008-07-09INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Publication Date
2008-07-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

A light adjusting device of electrical filter is characterized in that a motor base is fixed on a bottom plate of an instrument; a light adjusting motor is fixed on the motor base; a motor shaft on the light adjusting motor is connected with a worm which rotates on a worm rolling bearing; a worm wheel is fixed on a support base and rotates on a worm wheel rolling bearing; N round holes with identical diameters are uniformly formed on the worm wheel, N filters with different transmittances are inserted in the round holes and fixed on the worm wheel; a zero-position diode pair and a position diode pair are arranged on a bending plate on the worm wheel; the worm can rotate when the light-adjusting motor is electrified and is engaged with the worm wheel to drive the worm wheel to rotate, the position light emitting diode emits position signals during the rotation process of the worm wheel, and the position receiving diode receives the signals and transmits the signals to a light-adjusting motor controller to sequentially display the position of each filter. The invention changes the light adjustment manner of photoelectric instrument from single manual adjustment to electrical adjustment, thus satisfying the automatic requirement of modern optical instruments.
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Description

technical field

[0001] The invention relates to an electric filter mirror dimming device. Background technique

[0002] Adding a filter to the optical system, its function is to attenuate various components of visible light at the same time, and the attenuation of each part is required to be as flat as possible. For example, a green filter is added to the observation instrument, which can filter out the atmosphere. Scattered violet-blue light to obtain yellow-green light with high sensitivity to human eyes; after adding a neutral filter to the strong light observation instrument to weaken the strong light, the contrast between the object and the background can be improved; thus better Clarity; but due to seasonal weather, high angle of the sun and scene features, as well as night and day changes, the intensity of incident light changes greatly, in order to obtain a clear image on the CCD, it is necessary to change the transmittance of the filter. gear dimming. However, sin...

Claims

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