CN201859217U - Laser range finder - Google Patents
Laser range finder Download PDFInfo
- Publication number
- CN201859217U CN201859217U CN2010202411496U CN201020241149U CN201859217U CN 201859217 U CN201859217 U CN 201859217U CN 2010202411496 U CN2010202411496 U CN 2010202411496U CN 201020241149 U CN201020241149 U CN 201020241149U CN 201859217 U CN201859217 U CN 201859217U
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- Prior art keywords
- range finder
- laser range
- diaphragm
- light
- laser
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Abstract
The utility model discloses a laser range finder, comprising a laser generator, a collimator objective which is disposed at the transmitting terminal of the laser generator and transfers the ray generated by the laser generator into a collimation measuring beam, a receiving objective which receives the reflection measuring light reflected from an object to be measured, a photoelectric detector which is disposed in the laser range finder and receives reflection measuring light, and a light path conversion mechanism. The light path conversion mechanism comprises a diaphragm which can be rotated to a light reflective position and a light transmission position. The diaphragm is connected to a power device and is provided with a light reflective part and a light transmission part. At the light reflective position, the light reflective part aligns with the collimation measuring beam. At the light transmission position, the light transmission part aligns with the collimation measuring beam.
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 to such an extent as to 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 that one can rotate to the diaphragm of a reflective position and a printing opacity position, diaphragm links to each other with propulsion system, diaphragm is provided with reflector segment and light transmission part, and on reflective position, reflector segment is aimed at described alignment measurement light beam, on the printing opacity position, described alignment measurement light beam is aimed in the light transmission part.
Aforesaid laser range finder is characterized in that: diaphragm comprises a rotating shaft.
Aforesaid laser range finder is characterized in that: rotating shaft is perpendicular to the alignment measurement light beam.
Aforesaid laser range finder is characterized in that: the center of gravity of diaphragm is positioned in the rotating shaft.
Be arranged in the rotating shaft by center of gravity diaphragm, under the situation that does not have the external force effect, diaphragm will remain on the present position, the measurement accuracy of therefore having avoided when range finding, also will giving the motor continued power and having caused influencing metering circuit, and save electric energy greatly, be particularly advantageous in the battery powered portable laser stadimeter of main dependence.
Description of drawings
Fig. 1 is the perspective view when forming the interior lights loop of the laser range finder of a preferred embodiment of the present utility model;
Fig. 2 is the perspective view of laser range finder when forming the exterior light loop 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 is installed with LD (Laser Diode) module that can launch alignment measurement light beam 6, one laser generator 4 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 7 is installed in the erecting frame front end, and a photoelectric detector 5 that is positioned at the receiving objective focus place on receiving objective 7 optical axises is contained in the erecting frame rear end.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 collimated light beam, described light path throw-over gear comprises a rotatable diaphragm 2, diaphragm 2 links to each other with motor, diaphragm 2 is provided with reflector segment 1 and light transmission part 3, be projected on the reflector segment 1 for the collimation measuring beam when diaphragm 2 is in as shown in fig. 1 reflective position and reflect, be projected on the light transmission part 3 for collimating measuring beam when diaphragm 2 is in as shown in Figure 2 printing opacity position.Preferably, diaphragm 2 comprises base plate 21, side center at base plate 21 is provided with rotating shaft 22, the circumference of base plate 21 is provided with flanging 23, reflector segment 1 and light transmission part 3 are set between rotating shaft 22 and the flanging 23,3 one-tenth 180 ° of angle settings of described first-selectedly light-reflecting portion burst 1 and light transmission part, described flanging 23 have breach 24 and pass to allow the alignment measurement light beam.Rotating shaft 22 first-selections are perpendicular to the alignment measurement light beam.First-selected ground, reflector segment is the eyeglass that is all-trans, the light transmission part is the full impregnated eyeglass.The center of gravity of diaphragm 2 is positioned in the rotating shaft 22, so no matter which position diaphragm 2 turns to, is not having all can to remain on this position under the situation of external force; And because its center of gravity is in rotating shaft, needed driving force is also little.
When needs, 2 rotations of motor-driven diaphragm, when going to the reflective position of reflex reflector lens 1 aligning alignment measurement light beam, alignment measurement light beam 6 is reflected on the reflecting part of erecting frame 10 inside, through arriving on the photoelectric detector 5 after the reflection once more, form inner light path, stop this moment to the motor power supply, diaphragm 2 can remain on this position; When going to the printing opacity position of light transmission part 1 aligning alignment measurement light beam, the alignment measurement light beam is launched insusceptibly, forms external circuits, stops this this moment to the motor power supply, and diaphragm 2 still can remain on this position.
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.
Except motor, the propulsion system of light path throw-over gear can also be magnetic devices of changeable polarity or the like.
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 (9)
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 that one can rotate to the diaphragm (2) of a reflective position and a printing opacity position, diaphragm (2) links to each other with propulsion system, diaphragm (2) is provided with reflector segment (1) and light transmission part (3), and on reflective position, reflector segment is aimed at described alignment measurement light beam, on the printing opacity position, described alignment measurement light beam is aimed in the light transmission part.
2. laser range finder according to claim 1 is characterized in that: described diaphragm (2) comprises a rotating shaft (22).
3. laser range finder according to claim 2 is characterized in that: described rotating shaft (22) is perpendicular to described alignment measurement light beam.
4. laser range finder according to claim 2 is characterized in that: the center of gravity of described diaphragm (2) is positioned in the described rotating shaft (22).
5. according to each described laser range finder of claim 2-4, it is characterized in that: described diaphragm (2) also comprises base plate (21), described rotating shaft (22) is in a side center of base plate (21), the circumference of base plate (21) is provided with flanging (23), and reflector segment (1) and light transmission part (3) are set between rotating shaft (22) and the flanging (23).
6. laser range finder according to claim 5 is characterized in that: described flanging (23) has breach (24).
7. according to each described laser range finder of claim 2-4, it is characterized in that: described reflector segment is the eyeglass that is all-trans.
8. according to each described laser range finder of claim 2-4, it is characterized in that: described light transmission part is the full impregnated eyeglass.
9. according to each described laser range finder of claim 2-4, it is characterized in that: described reflector segment and described transmittance section are divided into 180 ° of angle settings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202411496U CN201859217U (en) | 2010-06-28 | 2010-06-28 | Laser range finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202411496U CN201859217U (en) | 2010-06-28 | 2010-06-28 | Laser range finder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201859217U true CN201859217U (en) | 2011-06-08 |
Family
ID=44105021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202411496U Expired - Fee Related CN201859217U (en) | 2010-06-28 | 2010-06-28 | Laser range finder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201859217U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636151A (en) * | 2012-04-19 | 2012-08-15 | 王振兴 | Laser range finder and range finding method thereof |
-
2010
- 2010-06-28 CN CN2010202411496U patent/CN201859217U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636151A (en) * | 2012-04-19 | 2012-08-15 | 王振兴 | Laser range finder and range finding method thereof |
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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 |
Granted publication date: 20110608 Termination date: 20150628 |
|
| EXPY | Termination of patent right or utility model |