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Intelligent diming industrial negative film viewer

A technology of intelligent dimming and film viewing lamps, applied in optics, light sources, electric light sources, etc., can solve the problems of low heat generation, difficulty in film viewing and evaluation, etc., and achieve the effects of low heat generation, convenient operation, and eye protection

Inactive Publication Date: 2009-06-03
徐富民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Intelligent dimming according to the placement position of the film, protection of the operator's eyes, low heat generation, and convenient operation, which solves the problem of difficult viewing and evaluation of industrial films with various exposure conditions and density levels

Method used

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  • Intelligent diming industrial negative film viewer
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  • Intelligent diming industrial negative film viewer

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Embodiment Construction

[0017] The present invention adopts high-efficiency and energy-saving mercury vapor fluorescent lamps to be arranged crosswise, utilizes LC resonant tank circuit and frequency conversion technology to realize fluorescent lamp preheating, ignition, and brightness adjustment, and the circuit is controlled by a single-chip microcomputer, which combines memory storage and calculation analysis of a computer to facilitate the realization of digital display and The ability of button operation realizes automatic preheating and starting when the viewing lamp is turned on, and immediately enters the preparation mode of the lowest brightness after starting. When reviewing the film, the computer automatically recognizes when the film is removed and enters the low-brightness preparatory mode. This technology adopts LC resonant tank circuit in light intensity control, uses MOSFET switching tube half bridge to drive LC resonant tank circuit, changes the driving frequency and pulse width, make...

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Abstract

This invention relates to an intelligent light-modulation industry negative film lamp to detecting negative films, which comprises a fil-viewing lamp and a control circuit, characterized in that: the control circuit adopts LC resonance slot way, MOSFET switch tube semi-bridge driven LC resonance slot changes driven frequency and pulse width, to make LC resonance slot out of tune; the current and voltage phase controlling semi-bridge changes brightness of lamp; single sheet machine adjusts duty cycle and driven frequency of LC slot; brightness setting memory adopts single sheet machine and EEPROM memory; driven chemical lamp circuit net; the chemical lamps in film-viewed body adopts straggered double-layer arrangement, its reflecting plate adopts irregular concave-convex lens. The invention has solved the problem of hard viewing and critizing the industry film in various exposure conditions and density fractions.

Description

technical field [0001] The invention relates to a detection device, in particular to an intelligent light-adjustable industrial film viewing lamp for detecting photographic negatives. Background technique [0002] At present, ordinary industrial film viewing lamps use thermal light sources to achieve the required brightness of 100,000 lux, but they generate a large amount of heat. If they are used for a long time, the industrial film will be baked and deformed and scrapped (the surface temperature of the required film viewing lamp must be lower than 50 degrees Celsius), the strong light of the medium viewing lamp is harmful to the eyes of the operator; while the brightness of the viewing lamp using a cold light source cannot reach the brightness of the observation of high-density negatives, resulting in errors or difficulties in the evaluation of high-density negatives draw conclusions. Contents of the invention [0003] The purpose of the present invention is to propose ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B41/36G03B21/14G01N21/00
Inventor 徐富民王俊周福东张忠新李敬军佟铎全杨卫东
Owner 徐富民