Compact matching type holographic aiming device optical system
An optical system and collimator technology, applied in the field of holographic optical systems, can solve problems such as poor laser coherence, height increase, and large holographic image difference, and achieve the effects of aiming accuracy assurance and weight reduction
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[0016] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.
[0017] see figure 1 , the embodiment of the present invention is provided with: a laser diode (LD) 1, a concave lens 2, a transmission holographic matching element 3 and a transmission hologram 4.
[0018] Laser diode 1 is used to emit red visible light waves to provide light source for the system. The laser beam emitted by the laser diode 1 is divergent light, and the central light of the divergent light is in the horizontal direction.
[0019] The concave lens 2 is used to further expand the divergence angle of the divergent light emitted by the laser diode 1, so that the laser beam can reach the required beam area in a short running distance. The concave lens 2 is placed vertically in front of the laser diode 1, and the center point of the concave lens 2 It is on the same horizontal line as the central ray of the beam emitted by the laser diode 1...
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