An Adaptive Laser Ranging System Based on Liquid Lens
A liquid lens and laser ranging technology, applied in the field of optical measurement, can solve the problem of inability to obtain excellent waveforms, and achieve the effects of compact structure, increased detection distance, and small size
Active Publication Date: 2018-06-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0004] The invention aims at the disadvantage that the traditional laser ranging system cannot obtain excellent waveform due to fixed focus, and proposes an adaptive laser ranging system based on liquid lens
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[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] figure 1 , an adaptive laser ranging system based on a liquid lens, which consists of an L-shaped bracket 1, a strip hole 2, a receiving module 3, a set screw 4, a transmitting module 5 and a ranging platform 6. After the receiving module 3 and the transmitting module 5 are screwed into the two round holes on the L-shaped bracket 1, they are respectively fixed on the L-shaped bracket by the set screws 4, and the strip-shaped holes 2 can be used to fix the whole system on the ranging platform 6 and have some room for movement.
[0030] figure 2 The specific composition structure and connection relationship of the transmitting module 5 are described. figure 2 -A is the axonometric view of the transmitting module 5, the connecting sleeve I8 is threaded, and the transmitting circuit board fixing frame 7 is connected with the transmitting optic...
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The invention relates to an adaptive laser ranging system based on a liquid lens, wherein the adaptive laser ranging system belongs to the field of optical measurement. The adaptive laser ranging system comprises a ranging platform, an L-shaped bracket, an elongated hole, a transmitting module and a receiving module, wherein the transmitting module comprises a laser tube, a transmitting circuit board fixing rack, a transmitting circuit board and a transmitting optical module. The receiving module comprises a receiving detector, a receiving back cover, a receiving circuit board, a receiving circuit board fixing rack and a liquid lens module. According to the adaptive laser ranging system, an optimal echo waveform can be obtained. Compared with a traditional optical system, the adaptive laser ranging system has advantages of small size and compact structure. The adaptive laser ranging system can remarkably improve echo receiving strength for increasing ranging distance and furthermore can effectively suppress ranging error caused by waveform saturation.
Description
technical field [0001] The invention relates to an adaptive laser ranging system based on a liquid lens, which belongs to the field of optical measurement. Background technique [0002] The pulse laser ranging method uses a laser to emit a very narrow pulse to the target, measures the time of flight (TOF: time of flight) of the laser pulse between the target and the sensor, and calculates the distance between the two. Assuming that the propagation speed of light in the air is c, and the round-trip time of the laser is t, the distance of the target is R=ct / 2. The TOF-based measurement method has a long detection distance (km level) and strong anti-interference, so it is widely used in military and civilian fields. Ranging accuracy has always been one of the important indicators of pulsed laser ranging. It is mainly determined by the accurate acquisition of time-of-flight, that is, the accurate extraction of target echoes. The key to acquisition of time-of-flight lies in the ...
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IPC IPC(8): G01S7/481
CPCG01S7/481
Inventor 曹杰郝群程杭林程阳张芳华孟令通
Owner BEIJING INSTITUTE OF TECHNOLOGYGY