CN201765325U - Laser range finder - Google Patents
Laser range finder Download PDFInfo
- Publication number
- CN201765325U CN201765325U CN2010202411142U CN201020241114U CN201765325U CN 201765325 U CN201765325 U CN 201765325U CN 2010202411142 U CN2010202411142 U CN 2010202411142U CN 201020241114 U CN201020241114 U CN 201020241114U CN 201765325 U CN201765325 U CN 201765325U
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- Prior art keywords
- range finder
- laser range
- laser
- reflector
- light
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Abstract
The utility model discloses a laser range finder, which comprises a laser generator, a collimator objective, a receiving objective, a photoelectric detector and a light path conversion mechanism, wherein the collimator objective is positioned at the transmitting terminal of the laser generator and converts light emitted by the laser generator into collimation measuring light beams; the receiving objective receives the reflected measuring light reflected back by a detected object and images the reflected measuring light; and the photoelectric detector is arranged inside the laser range finder and receives the reflected measuring light. The laser range finder is characterized in that the light path conversion mechanism comprises a reflection board that is mounted on a collimation optical path around a rotating shaft and can rotate to a shielding position and an unblocking position, a power device providing power for the reflection board, and a limit device limiting the position of the reflection board. Through the arrangement, after the reflection board reaches the preset position, the power device needs not to be supplied continuously; or the reflection board can be maintained in the current position, and then the range measurement is performed, so that the measuring accuracy is ensured, and the electric energy is greatly saved.
Description
Technical field
The utility model relates to a kind of stadimeter, especially relates to a kind of laser range finder that carries out range observation with light wave, belongs to the optical instrument technical field.
Background technology
Laser range finder is the instrument that utilizes laser that the distance of target is accurately measured.Laser range finder penetrates a branch of very thin laser to target when work, by photovalve receiving target laser light reflected bundle, timer is measured laser beam from being transmitted into the time of reception, calculates the range-to-go from the observer.That laser range finder has is easy to use, measure accurately, the short remarkable advantage of Measuring Time, therefore is used widely at numerous areas such as building, explorations.
The basic structure of existing laser range finder is: contain a laser generator; A collimator objective or a collimating mirror group that is positioned at the laser generator transmitting terminal is used for the laser that laser generator sends being transformed into a branch of alignment measurement light beam and blazing abroad; A receiving objective that is positioned at laser generator one side is used to receive reflection measurement light beam and the focal imaging that reflects from testee; A photoelectric detector that is arranged on stadimeter inside is used to receive the imaging of reflection measurement light beam and light signal is converted to corresponding electric signal, and this electric signal draws the range finding result after treatment.
In fact, change the measurement result that the electric signal that comes obtains according to the light signal that receives at the photoelectric detector place and also comprise the distance of measuring light at the stadimeter internal communication.In addition in measuring process, each components and parts heating and environment temperature in various degree also causes the electric signal in the circuit to produce drift error to the influence of each electronic devices and components in the stadimeter circuit, directly influences the accuracy of measurement result.Therefore, all can provide a known internal reference distance of length to improve measurement accuracy usually in stadimeter inside, and the reflector of position changeable is set on the alignment measurement light path.When measuring outer distance, reflector is in and allows open position, makes that the alignment measurement light beam is impregnable to be launched; When measuring inner distance, reflector is in and blocks the position, and the alignment measurement light beam is reflected in stadimeter inside, forms the interior lights loop.
In the existing optical range finder, the normal motor output shaft that adopts directly drives the reflector rotation, when the reflector switching puts in place, must give the motor continued power reflector is remained on this position, very power consumption, especially unfavorable for main battery-powered stadimeter.In addition, laser range finder is a kind of very accurate instrument, can produce the influence of can not ignore to measurement result so that offer the electric current of motor, reduces its measurement accuracy greatly.
The utility model content
Technical problem to be solved in the utility model is that the problem at above prior art exists by throw-over gear improves to light path, proposes a kind of compact conformation, energy saving, measures laser range finder accurately.
In order to reach above purpose, the utility model provides a kind of laser range finder, comprising:
Laser generator;
Be positioned at the transmitting terminal of laser generator, the laser generator emitted light be transformed into the collimator objective of alignment measurement light beam;
Reflection measurement light that reception reflects from testee and the receiving objective that makes its imaging;
Be placed in the photoelectric detector of laser range finder inside, reception reflection measurement light;
And be arranged at light path throw-over gear on the alignment measurement propagation path, it is characterized in that, described light path throw-over gear comprises around a rotating shaft and is installed on the collimated light path, can be rotated to one and block position and and allow the reflector of open position that one propulsion system, of power being provided for described reflector limit the stop means of described reflector position.
Aforesaid laser range finder is characterized in that: stop means is a limit spring.
In this way, avoided when range finding, also will causing influencing the measurement accuracy of metering circuit, and saved electric energy greatly, be particularly advantageous in the battery powered portable laser stadimeter of main dependence to the motor continued power.
Description of drawings
Fig. 1 allows the perspective view of open position for the reflector of the laser range finder of a preferred embodiment of the present utility model is in;
Fig. 2 is in the perspective view of blocking the position for reflector among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.The laser range finder of a preferred embodiment of the present utility model as shown in Figure 1, one end of erecting frame 10 is installed with LD (Laser Diode) module that can launch alignment measurement light beam 6, one laser generator 8 is housed in this LD module, and the collimator objective that is positioned at the generating laser transmitting terminal.Laser generator and collimator objective also can directly be contained on the erecting frame.In LD module one side, a receiving objective 9 is installed in erecting frame 10 front ends, and a photoelectric detector 3 that is positioned at the receiving objective focus place on receiving objective 8 optical axises is contained in erecting frame 10 rear ends.In this preferred embodiment, receiving objective is the part of convex lens, in other embodiments, also can be the lens of other suitable forms.Photoelectric detector can be avalanche photodide or PIN photodiode or other suitable optical detection device or device.In other embodiments, at least one in generating laser and the collimator objective also can be arranged on the optical axis of receiving objective.
In this preferred embodiment, light path throw-over gear is housed on the travel path of alignment measurement light beam, light path throw-over gear comprises around a rotating shaft and is installed on the collimated light path, can be rotated to one and block position and and allow the reflector 5 of open position, the rotating shaft 7 of reflector 5 is installed on the erecting frame, first solenoid 1 is arranged at reflector 5 one sides, second solenoid 4 is arranged at reflector 5 opposite sides, described reflector 5 is made by iron or magnetic material, and iron or magnetic material perhaps are housed on reflector.Reflector 5 is provided with limit spring 2 near a side of first solenoid 1, is used for the position of reflector 5 is limited.
When 4 energisings of second solenoid, second solenoid, 4 generation suction turn to reflector 5 and block the position, alignment measurement light beam 6 is reflexed on the reflecting part of erecting frame 10 inside by reflector 5, through arriving on the photoelectric detector 3 after the reflection once more, form inner light path, this moment is to second solenoid outage, and reflector is because the effect of limit spring remains on blocks on the position; When 1 energising of first solenoid, first solenoid 1 produces suction and reflector 5 is turned to allow open position, and the alignment measurement light beam is launched insusceptibly, forms external circuits, this moment is to first solenoid outage, and reflector is because the effect of limit spring remains on allows on the open position.
The utility model utilizes the solenoid of two diverse locations, predetermined to block the position or allows behind the open position when reflector arrives, and need not the motor power supply, reflector is remained on the current location, and then carry out range observation.In this way, also when finding range, also to cause influencing the measurement accuracy of metering circuit, and save electric energy greatly, be particularly advantageous in the battery powered portable laser stadimeter of main dependence to the motor continued power with regard to having avoided.
As the propulsion system of light path throw-over gear, first and second solenoids also can be substituted by motor, and wherein the rotating shaft of motor shaft and reflector links to each other; Except motor, the propulsion system of light path throw-over gear can also be the piston mechanism that is connected with reflector, magnet of changeable polarity or the like.
As stop means, limit spring can also be substituted by the locating part of other suitable forms or structure.
Above preferred embodiment and accompanying drawing are just set forth content of the present utility model, and do not really want to limit protection domain of the present utility model.Those having ordinary skill in the art will appreciate that under the prerequisite that does not break away from spiritual category of the present utility model the related laser range finder of the utility model also has a lot of modifications and replacement scheme.
Claims (7)
1. laser range finder comprises:
Laser generator;
Be positioned at the transmitting terminal of laser generator, the laser generator emitted light be transformed into the collimator objective of alignment measurement light beam;
Reflection measurement light that reception reflects from testee and the receiving objective that makes its imaging;
Be placed in the photoelectric detector of laser range finder inside, reception reflection measurement light;
And be arranged at light path throw-over gear on the alignment measurement propagation path, it is characterized in that, described light path throw-over gear comprises around a rotating shaft (7) and is installed on the collimated light path, can be rotated to one and block position and and allow the reflector (5) of open position that one propulsion system, of power being provided for described reflector limit the stop means of described reflector position.
2. laser range finder according to claim 1 is characterized in that: described propulsion system comprise first magnetic coil that is positioned at described reflector one side, and second magnetic coil that is positioned at described reflector opposite side.
3. laser range finder according to claim 1 is characterized in that: described propulsion system are a motor.
4. laser range finder according to claim 1 is characterized in that: described propulsion system are a piston mechanism that is connected with described reflector.
5. laser range finder according to claim 1 is characterized in that: described propulsion system are the switchable magnetic devices of a polarity.
6. according to each described laser range finder among the claim 1-5, it is characterized in that: iron or magnetic material are made or be equipped with to described reflector by iron or magnetic material.
7. according to each described laser range finder among the claim 1-5, it is characterized in that: described stop means (2) is a limit spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202411142U CN201765325U (en) | 2010-06-28 | 2010-06-28 | Laser range finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202411142U CN201765325U (en) | 2010-06-28 | 2010-06-28 | Laser range finder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765325U true CN201765325U (en) | 2011-03-16 |
Family
ID=43717933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202411142U Expired - Fee Related CN201765325U (en) | 2010-06-28 | 2010-06-28 | Laser range finder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201765325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772987A (en) * | 2017-01-13 | 2017-05-31 | 宁波舜宇仪器有限公司 | Micro- scanner and its micro- scan method |
-
2010
- 2010-06-28 CN CN2010202411142U patent/CN201765325U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772987A (en) * | 2017-01-13 | 2017-05-31 | 宁波舜宇仪器有限公司 | Micro- scanner and its micro- scan method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20170628 |