CN203535218U

CN203535218U - A laser ranging optical path apparatus

Info

Publication number: CN203535218U
Application number: CN201320683342.9U
Authority: CN
Inventors: 徐顶
Original assignee: 永康市盛骏科技有限公司
Priority date: 2013-11-01
Filing date: 2013-11-01
Publication date: 2014-04-09

Abstract

The utility model discloses a laser ranging optical path apparatus comprising a laser emitting module, a spectroscope slice, a receiving detector A, an echo receiving module, and an optical path installing and adjusting module. A laser beam emitted from the laser emitting module is divided into a reflected light beam and a transmitted light beam by the light splitting of the spectroscope slice. The reflected light beam is reflected to the receiving detector A. The transmitted light beam is transmitted to a measured target and then is reflected to the echo receiving module. The laser emitting module, the spectroscope slice, the receiving detector A, and the echo receiving module are arranged successively on the optical path installing and adjusting module along the forward direction of the laser beam. The laser ranging optical path apparatus has simple and reasonable structure and may greatly increase laser ranging speed and laser ranging reliability.

Description

A kind of laser ranging light path device

Technical field

The utility model relates to laser ranging field, relates in particular to a kind of laser ranging light path device.

Background technology

Laser range finder, as a kind of important distance mearuring equipment, has a wide range of applications in fields such as industry, mapping, building and finishings, is conventional instrument in commercial production and life.At present, conventional hand-held laser rangefinder adopts phase type range measurement principle, in measuring process, because the circuit signal in stadimeter circuit is easily subject to the different heating situation of each element and the temperature of external environment condition produces offset error, conventionally all can in the inner range finding of stadimeter light path, increase a transmitting light path deviation mechanism, an internal reference light path is provided, and the distance of witness mark light path, range finding result is revised, improved measurement accuracy.This range finding light path, when once finding range, is launched light path deviation mechanism by control and is carried out the switching of optical path and reference path, need to carry out twice range finding step and just can complete the range finding to measured target, and measuring speed is slower.Meanwhile, light path deviation mechanism generally adopts micromachine and mechanical type deviation structure, not only will consume part powering quantity, also can cause deviation mechanism wear, the problem that causes Range finding reliability to reduce in long-term use.

Summary of the invention

The utility model, for defects such as the measuring speed existing in prior art are slow, Range finding reliability is low, provides a kind of new laser ranging light path device.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

A kind of laser ranging light path device, comprise Laser emission module, light splitting eyeglass, pick-up probe A, echo receives module, also comprise that light path debugs module, the laser beam that described Laser emission module sends becomes folded light beam and transmitted light beam after light splitting lens light-splitting, described folded light beam reflexes on described pick-up probe A, described transmitted light beam is transmitted to measured target back reflection and receives on module to echo, described Laser emission module, light splitting eyeglass, pick-up probe A, echo receives module and along the working direction of laser beam, is set in turn in light path and debugs on module.

Laser emission module is for Emission Lasers light beam, light splitting eyeglass will be folded light beam and transmitted light beam to laser beam along separate routes, pick-up probe A is for receiving the folded light beam after light splitting lens reflecting and producing thus a reference signal, echo receives module for the echo laser beam that receives transmitted light beam and return after measured target reflection and produces a measuring-signal, and finally after signal processing circuit processing and phase measuring circuit measurement, obtain range information, by above light path design, can greatly improve speed and the Range finding reliability of laser ranging.

As preferably, a kind of laser ranging light path device described above, described Laser emission module comprises laser instrument, collimation lens, the laser beam that described laser instrument sends is mapped on light splitting eyeglass after collimation lens becomes parallel beam.Laser instrument is for generation of laser beam, and collimation lens sends after laser beam can being collimated, more accurate while making to find range.

As preferably, a kind of laser ranging light path device described above, described echo receives module and comprises receiver lens, pick-up probe B, and described transmitted light beam is transmitted to measured target back reflection to receiver lens, through receiver lens, receives post-concentration to described pick-up probe B.Pick-up probe B is for receiving the laser beam that measured target returns, and receiver lens, for the laser beam returning is assembled to pick-up probe B, makes measurement result more accurate.

As preferably, a kind of laser ranging light path device described above, described echo receives module and also comprises micromatic setting, and described pick-up probe B is fixed on described micromatic setting.Micromatic setting can be finely tuned the position of pick-up probe B, and the detection photosurface of pick-up probe B can be accurately positioned on the optical focus of receiver lens, makes measurement result more accurate.

As preferably, a kind of laser ranging light path device described above, described light splitting eyeglass and the angle between laser beam are 44 °～46 °, described folded light beam and the beam intensity ratio of transmitted light beam are 1:49～5:45.When light splitting eyeglass is installed, selected suitable angle and ratio in above-mentioned scope, more flexible while making to install according to actual needs.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of laser ranging light path device of the utility model.

Embodiment

Below in conjunction with accompanying drawing 1 and embodiment, the utility model is described in further detail, but they are not to restriction of the present utility model:

embodiment 1

As shown in Figure 1, a kind of laser ranging light path device, comprise Laser emission module 10, light splitting eyeglass 6, pick-up probe A7, echo receives module 2, also comprise that light path debugs module 1, the laser beam that described Laser emission module 10 sends becomes folded light beam and transmitted light beam after 6 light splitting of light splitting eyeglass, described folded light beam reflexes on described pick-up probe A7, described transmitted light beam is transmitted to measured target back reflection and receives on module 2 to echo, described Laser emission module 10, light splitting eyeglass 6, pick-up probe A7, echo receives module 2 and along the working direction of laser beam, is set in turn in light path and debugs on module 1.

During work, Laser emission module 10 is laser beam the directive light splitting eyeglass 6 through ovennodulation by transmitting, 6 pairs of laser beams of light splitting eyeglass carry out shunt, form folded light beam and transmitted light beam, folded light beam directive pick-up probe A7, after receiving, pick-up probe A7 produces reference signal, transmitted light beam directive measured target, echo laser beam directive echo after measured target reflection receives module 2, echo receives after module 2 receives and produces measuring-signal, reference signal and measuring-signal be the final ranging information that produces after inter-process processing of circuit and metering circuit measurement.

As preferably, described Laser emission module 10 comprises laser instrument 9, collimation lens 8, and the laser beam that described laser instrument 9 sends is mapped on light splitting eyeglass 6 after collimation lens 8 becomes parallel beam.

As preferably, described echo receives module 2 and comprises receiver lens 5, pick-up probe B4, and described transmitted light beam is transmitted to measured target back reflection to receiver lens 5, through receiver lens 5, receives post-concentrations to described pick-up probe B4.

As preferably, described echo receives module 2 and also comprises micromatic setting 3, and described pick-up probe B4 is fixed on described micromatic setting 3.

During installation, a parallel light tube is vertically positioned over to echo to be received before module 2, the light directive receiver lens 5 that parallel light tube sends, convergence through receiver lens 5, on pick-up probe B4, form hot spot, now regulate micromatic setting 3, make the diameter of hot spot minimum, and facula position overlaps with the photosurface position of pick-up probe B4, after having regulated, remove parallel light tube, make laser instrument 9 launch laser beam, be irradiated on the measured target of distance for 10m, and observe pick-up probe B4 and go up the hot spot forming, regulate the angle of Laser emission module 10, hot spot is assembled to the photosurface of pick-up probe B4, in distance, be 30m, in the different distance such as 50m, repeat above step, until hot spot is focused on the photosurface of pick-up probe B4 all the time, now complete the installation of light path device.

As preferably, described light splitting eyeglass 6 and the angle between laser beam are 44 °～46 °, and described folded light beam and the beam intensity ratio of transmitted light beam are 1:49～5:45.

In a word, the foregoing is only preferred embodiment of the present utility model, the equalization that all scopes of applying for a patent according to the utility model are done changes and modifies, and all should belong to covering scope of the present utility model.

Claims

1. a laser ranging light path device, comprise Laser emission module (10), light splitting eyeglass (6), pick-up probe A (7), echo receives module (2), it is characterized in that: also comprise that light path debugs module (1), the laser beam that described Laser emission module (10) sends becomes folded light beam and transmitted light beam after light splitting eyeglass (6) light splitting, described folded light beam reflexes on described pick-up probe A (7), described transmitted light beam is transmitted to measured target back reflection and receives on module (2) to echo, described Laser emission module (10), light splitting eyeglass (6), pick-up probe A (7), echo receives module (2) and along the working direction of laser beam, is set in turn in light path and debugs on module (1).

2. a kind of laser ranging light path device according to claim 1, it is characterized in that: described Laser emission module (10) comprises laser instrument (9), collimation lens (8), and the laser beam that described laser instrument (9) sends is mapped on light splitting eyeglass (6) after collimation lens (8) becomes parallel beam.

3. a kind of laser ranging light path device according to claim 1, it is characterized in that: described echo receives module (2) and comprises receiver lens (5), pick-up probe B (4), it is upper to receiver lens (5) that described transmitted light beam is transmitted to measured target back reflection, through receiver lens (5), receives post-concentration to described pick-up probe B (4).

4. a kind of laser ranging light path device according to claim 3, it is characterized in that: described echo receives module (2) and also comprises micromatic setting (3), and described pick-up probe B (4) is fixed on described micromatic setting (3).

5. a kind of laser ranging light path device according to claim 1, is characterized in that: described light splitting eyeglass (6) and the angle between laser beam are 44 °～46 °, and described folded light beam and the beam intensity ratio of transmitted light beam are 1:49～5:45.