High-light even facula adjustable projector

Abstract

The invention is a high-brightness uniform light adjustable light spot projecting device used for the optical coating monitoring system, and its main characteristics are: the light source firing box has the tungsten lamp with spotlight cover, one side of the box connecting with a fixed speed motor modulator through the supporting pillar, the outer light source of the modulator correspondingly connecting with the tungsten cylinder, and the cylinder has a focusing lens component which can move and adjust along the axis. Using this projector, it can not only produce high-brightness strong light source, but have stable modulation optical output, will achieve the desired uniform light effect. And light spot size is adjustable, so it can guarantee uniform and consistent light spot projecting, but also obtain the uniform small spot in long distance, and the light spot intensity is strong.

Description

technical field [0001] The invention belongs to the technical field of optical coating, in particular to a high-brightness, uniform and adjustable spot light projection device for an optical coating monitoring system. Background technique [0002] In the known technology, the light projecting device used in optical coating monitoring generally includes three parts: light source emission, modulated light wave and concentrated light transmission. The defects are: 1. The light source emission part usually uses incandescent bulbs, It is to place a flat or curved reflector behind the incandescent bulb to enhance the brightness of the emitted light. Since the light emitted by the incandescent lamp itself is relatively weak, and the light emitted by the light source in the direction of the exit aperture is scattered light or parallel light generated by reflection, and the light beam transmitted through the exit aperture is very small, most of the light is projected into the light s...

AI Technical Summary

Problems solved by technology

[0002] In the known technology, the light projecting device used in optical coating monitoring generally includes three parts: light source emission, modulated light wave and concentrated light transmission. The defects are: 1. The light source emission part usually uses incandescent bulbs, A flat or curved reflector is placed behind the incandescent bulb to enhance the brightness of the emitted light

Since the light emitted by the incandescent lamp itself is relatively weak, and the light emitted by the light source in the direction of the exit aperture is scattered light or parallel light generated by reflection, and the light beam transmitted through the exit aperture is very small, most of the light is projected into the light source box. The wall is wasted, so the utilization rate of light energy is low, and the emitted light is too weak, which leads to weak light signal of the monitoring system, difficult monitoring and identification, and poor effect

[0003] 2. The modulator used to modulate light waves usually uses an ordinary motor as the rotating power of the modulation disc, and the rotation speed of the modulation disc is often uneven due to fluctuations in the power supply voltage, resulting in uneven wavelength and frequency of the modulated beam, which affects and reduces Optical signal monitoring accuracy and monitoring effect

Secondly, the optical holes on the modulation disc are mostly circular or fan-shaped, and the modulated light waves are approximately trapezoidal curves, and their peaks are difficult to distinguish, and harmonic noise is generated, which brings difficulties to signal monitoring

[0004] 3. The condensing position of the condensing lens in the condensing mirror box is fixed but not adjustable. When the wavelength bandwidth range of the transmitted light changes, the focal length of the lens cannot be adjusted, and the spot projected on the comparison film is sometimes too large. , cannot be fully projected onto the comparison sheet, resulting in loss of light energy and attenuation of the light signal

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