Holographic laser 3-D projector
A holographic laser and projector technology, applied in instruments and other directions, can solve the problem of unable to display dynamic three-dimensional color images, and achieve unique effects, strong appeal, and simple structure.
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[0027] 1. Production of holographic dry plate
[0028] That is to say, the method of shooting holograms. It depends on the type of image to be displayed. Taking the simplest holographic projector with only digital display function as an example, the method of making the holographic dry plate of this kind of holographic projector is briefly introduced.
[0029] 1. Instruments and equipment required for light source and exposure time control system.
[0030] The system includes laser tube, power supply, optical switch and exposure time timer. A good coherent light source must be used to take holograms. This system adopts helium-neon laser 11, the coherence length of the red laser emitted by this laser is longer, generally not less than 1 / 4-1 / 2 of the resonator length, so small helium-neon lasers (power 1-3MW) are commonly used to capture smaller diffuse objects and get high-quality holograms. If the power of the laser is higher, the exposure time can be shortened when shoot...
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