CN210514622U - Laser range finder optical structure and laser range finder - Google Patents
Laser range finder optical structure and laser range finder Download PDFInfo
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- CN210514622U CN210514622U CN201921097672.3U CN201921097672U CN210514622U CN 210514622 U CN210514622 U CN 210514622U CN 201921097672 U CN201921097672 U CN 201921097672U CN 210514622 U CN210514622 U CN 210514622U
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Abstract
The application relates to the field of laser ranging, in particular to a laser range finder optical structure and a laser range finder. A laser range finder optical structure comprising: the device comprises a measuring assembly, an indicating light assembly, a first filter lens and a receiving assembly. The measuring assembly is used for emitting measuring laser. The indicating light assembly is used for emitting indicating light, and the indicating light is visible light. The first filter is arranged on a light emitting path of the measuring laser and the indicating light and used for adjusting the measuring laser and the indicating light to coincide with each other. The receiving assembly is used for receiving the measuring laser in the reflected light reflected by the object to be measured. Through setting up the pilot light subassembly, can send the visible light as the pilot light, can show the specific position of target object at the measuring in-process to can show the specific position of object simultaneously when making to utilize laser rangefinder.
Description
Technical Field
The application relates to the field of laser ranging, in particular to a laser range finder optical structure and a laser range finder.
Background
A laser rangefinder is an instrument that accurately measures the distance to a target using laser light. When the laser distance measuring instrument works, a thin laser beam is emitted to a target, a photoelectric element receives the laser beam reflected by the target, and a timer measures the time from emitting to receiving of the laser beam and calculates the distance from an observer to the target. At present, the laser range finder has already realized market popularization, and has wide application scenes from military industry, industry to civil use.
However, in the current common laser range finders, the visible laser range finders generally detect a relatively short distance. The long-distance laser range finder can only measure the distance of an object, but cannot directly see the specific position of the measured object.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a laser range finder optical structure and laser range finder, it aims at improving the problem that present laser range finder can not test out the specific position of object.
In a first aspect, the present application provides a technical solution:
a laser range finder optical structure comprising:
the measuring component is used for emitting measuring laser;
the indicating light assembly is used for emitting indicating light, and the indicating light is visible light;
a first filter capable of passing the measurement laser light and reflecting the indication light; the first filter is arranged on the light emitting paths of the measuring laser and the indicating light and used for adjusting the measuring laser and the indicating light to coincide with each other; and
and the receiving assembly is used for receiving the measuring laser in the reflected light reflected by the object to be measured.
Through setting up the pilot light subassembly, can send out visible light as the pilot light, can show the specific position of target object in the process of measuring. Because the light paths of the measuring laser and the indicating light are overlapped, the indicating light can simultaneously display the specific position of the object when the measuring laser is used for ranging.
In other embodiments of the present application, the measurement assembly includes a collimating lens and a laser source; the first filter is arranged on the light-emitting side of the laser source; the collimating lens is arranged on the light-emitting side of the first filter lens and used for converting the superposed measuring laser and indicating light into parallel light; the indicating light assembly comprises an indicating light source; the included angle between the first filter lens and the optical axis of the measuring laser emitted by the laser source is equal to the included angle between the first filter lens and the optical axis of the indicating light emitted by the indicating light source.
The light paths of the measuring laser and the indicating light are overlapped through the collimating lens and then output, so that the specific position of an object to be measured can be displayed simultaneously in the measuring process.
In other embodiments of the present application, the first filter lens forms an angle of 30-60 ° with the optical axis of the measurement laser light emitted from the laser source;
the included angle between the first filter and the optical axis of the indicating light emitted by the indicating light assembly is 30-60 degrees.
In other embodiments of the present application, the measurement assembly includes a first collimating lens and a laser source, the first collimating lens is disposed on a light exit side of the laser source, and the first collimating lens is configured to convert measurement laser light emitted by the laser source into parallel light;
the indicating light assembly comprises a second collimating lens and an indicating light source; the second collimating lens is arranged on the light-emitting side of the indicating light source and used for converting the indicating light emitted by the indicating light source into parallel light;
the first filter is arranged on the light-emitting sides of the first collimating lens and the second collimating lens;
the included angle between the first filter lens and the optical axis of the measuring laser passing through the first collimating lens is equal to the included angle between the first filter lens and the optical axis of the indicating light passing through the second collimating lens.
The first collimating lens and the second collimating lens collimate the measuring laser and the indicating light respectively and then pass through the first filter lens, so that the optical axes of the measuring laser and the indicating light are superposed.
In other embodiments of the present application, an included angle between the first filter and an optical axis of the measurement laser after passing through the first collimating lens is 30-60 °;
the included angle between the first filter lens and the optical axis of the indicating light passing through the second collimating lens is 30-60 degrees.
In other embodiments of the present application, the receiving assembly comprises a set of receiving mirrors and a detector;
the receiving mirror group is used for receiving reflected light reflected by the object to be measured and selectively outputting measuring laser in the reflected light;
the detector is used for receiving the measuring laser in the reflected light.
The receiving mirror group selectively receives the measuring laser in the reflected light, so that the measuring accuracy is improved, and the calculation is convenient.
In other embodiments of the present application, the receiving lens group includes a converging lens and a second filter lens, and the converging lens is disposed in the incident light path of the reflected light and is configured to converge the reflected light to the detector; the second filter is arranged on the light-emitting side of the convergent lens and parallel to the convergent lens.
The reflected light can be transmitted to the detector after being converged by the converging lens.
In other embodiments of the present application, the measurement light is a near-infrared laser.
The detector is more sensitive to near infrared laser light, so that the measurement is more sensitive.
In a second aspect, the present application provides a technical solution:
a laser range finder comprises the optical structure of the laser range finder;
the receiving assembly, the measuring assembly and the indicating light assembly are all connected to the controller; and
and the power supply module is connected to the controller and provides electric energy for the whole circuit system of the laser range finder.
The laser range finder can achieve millimeter-level measurement precision through accurate matching of circuit light paths.
In other embodiments of the present application, the laser range finder further includes a display module, a communication module, and a key module;
the display module is connected with the controller and is used for displaying information sent by the controller;
the communication module is connected with the controller and used for wirelessly communicating with external terminal equipment to exchange data;
the key module is connected with the controller and used for inputting operation of a human-computer interaction interface and transmitting input information to the controller.
The display module, the communication module and the key module enable the laser range finder to be more convenient to use and higher in flexibility.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic emission optical path diagram of an optical structure of a first laser range finder provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of an emission optical path of a second optical structure of a laser range finder provided in an embodiment of the present application;
fig. 3 is a schematic receiving optical path diagram of an optical structure of a second laser range finder provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a laser range finder provided in an embodiment of the present application;
icon: 100-laser rangefinder optical configuration; 110-a laser source; 120-an indicator light source; 131-a first filter; 132-a collimating lens; 1311-a first collimating lens; 1312-a second collimating lens; 130-a receiving component; 140-a set of receiving mirrors; 141-a converging lens; 142-a second filter; 150-a detector; 200-a controller; 300-a power supply module; 400-a display module; 500-a communication module; 600-key module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be understood that the terms "upper", "outer", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally used to place products of the application, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of description and simplification of the description, but do not refer to or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be considered as limiting the present application.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Examples
The embodiment of the present application provides a laser range finder optical structure 100, including: a measurement assembly, an indicator light assembly, a first filter 131 and a receiving assembly 130. The measuring assembly is used for emitting measuring laser. The wavelength of the measurement laser is generally not in the visible wavelength range and is not visible to the naked eye. For example, the measuring laser can be near infrared laser (with wavelength ranging from 780nm to 2526 nm). The indicating light assembly is used for emitting indicating light, and the indicating light is visible light (the wavelength is within the range of 380-780 nm). The first filter 131 is capable of transmitting the measurement laser light so that the indication light is reflected. The first filter 131 is disposed on the light-emitting path of the measurement laser and the indication light, and is used for adjusting the measurement laser and the indication light to coincide with each other. The receiving assembly 130 is used to receive the measuring laser light in the reflected light reflected by the object to be measured.
Through setting up the pilot light subassembly, can send out visible light as the pilot light, can show the specific position of target object in the process of measuring. Because the light paths of the measuring laser and the indicating light are overlapped, the indicating light can simultaneously display the specific position of the object when the measuring laser is used for ranging.
Further, the measuring laser emitted by the measuring assembly is irradiated on the object for measuring the distance of the object. Meanwhile, the indicating light emitted by the indicating light assembly irradiates on the object and is used for displaying the specific position of the object. Thereby realizing the simultaneous measurement of the distance of the object and the display of the specific position of the object. The measuring laser and the indicating light are reflected to the receiving mirror group 140 by the surface of the object, and reach the detector 150 after being processed by the receiving mirror group 140, and the detector 150 receives the measuring laser in the reflected light and transmits the information to the external processor, so as to calculate the distance of the object. In this process, since the indicating light is irradiated on the object simultaneously with the measuring laser, it is achieved that the specific position of the object is displayed while the target object distance is measured.
Further, the above-mentioned measuring assembly comprises a laser source 110. The indicator light assembly includes an indicator light source 120. The laser source 110 and the indicating light source 120 may each select an LED light emitting element. The LED light-emitting elements emit point light sources. The indication light source 120 emits visible light, and the laser source 110 emits invisible laser light.
In some embodiments of the present application, the measurement assembly includes a laser source 110 and a collimating lens 132. The first filter 131 is disposed on the light exit side of the laser source 110. A collimating lens 132 is disposed on the light exit side of the first filter 131 to convert the coincident measurement laser light and the indicator light into parallel light. The indicator light assembly includes an indicator light source 120. The first filter 131 is disposed on the light exit side of the indicator light.
Further, the angle between the first filter 131 and the optical axis of the measurement laser is equal to the angle between the first filter 131 and the optical axis of the indication light.
Optionally, the angle between the first filter 131 and the optical axis of the measurement laser emitted by the laser source 110 is 30-60 °; the angle between the first filter 131 and the optical axis of the indicating light emitted from the indicating light source 120 is 30-60 deg.
Optionally, the angle between the first filter 131 and the optical axis of the measurement laser emitted by the laser source 110 is 45 °, and the angle between the first filter 131 and the optical axis of the indication light emitted by the indication light source 120 is also 45 °.
Referring to fig. 1, the first filter 131 is disposed at a light emitting side of the laser source 110 and at the same time at a light emitting side of the indicating light source 120, and the first filter 131 is disposed obliquely to both the laser source 110 and the indicating light source 120. the collimating lens 132 is disposed at the light emitting side of the first filter 131. an angle between the first filter 131 and an optical axis of the measurement laser light emitted from the laser source 110 (angle α in fig. 1) is 45 °, an angle between the first filter 131 and an optical axis of the measurement laser light emitted from the indicating light source 120 (angle β in fig. 1) is 45 °, both angles are equal, that is, angle α and angle β in fig. 1 are equal.
By setting the included angle between the first filter 131 and the optical axis of the measurement laser emitted by the indication light source 120 to be equal to the included angle between the first filter 131 and the optical axis of the measurement laser emitted by the laser source 110, the indication light emitted by the indication light source 120 can be overlapped with the measurement laser transmitted through the first filter 131 after being reflected by the first filter 131. And then the indicating light and the measuring laser are emitted along the same optical path and irradiate on the same position of the target object to be measured, so that the specific position of the object is displayed while the distance of the object is measured.
In other alternative embodiments of the present application, the collimating lens 132 may be selected from other optical elements capable of converting the measuring laser light and the indicating light into parallel light, such as a convex lens, a convex lens group, a concave lens, a convex lens group, and the like.
In other alternative embodiments of the present application, the angle value of the angle between the first filter 131 and the optical axis of the measurement laser emitted by the indication light source 120 may be selected from other angle values according to the actual setting position. The value of the included angle between the first filter 131 and the optical axis of the measurement laser emitted from the laser source 110 may be selected according to the actual setting position. Both may be kept equal. For example, 60 ° each, 50 ° each, etc.
In some embodiments of the present application, the measurement assembly includes a first collimating lens 1311 and a laser source 110, and the first collimating lens 1311 is configured to convert the measurement laser light emitted from the measurement assembly into parallel light and output the parallel light to the first optical filter 131. The first collimating lens 1311 is disposed on the light exit side of the laser source 110. The indicator light assembly includes an indicator light source 120 and a second collimating lens 1312, and the second collimating lens 1312 is used for converting the indicator light emitted from the indicator light assembly into parallel light and outputting the parallel light to the first filter 131. The second collimating lens 1312 is disposed at a light exit side of the indication light source 120. The first filter 131 is disposed on the light-exit side of the first collimating lens 1311 and the second collimating lens 1312.
Further, an angle between the first filter 131 and the optical axis of the measurement laser light after passing through the first collimating lens 1311 is equal to an angle between the first filter 131 and the optical axis of the indication light after passing through the second collimating lens 1312.
Further optionally, an included angle between the first filter 131 and the optical axis of the measurement laser passing through the first collimating lens 1311 is 30-60 °; the angle between the first filter 131 and the optical axis of the indicator light passing through the second collimating lens 1312 is 30-60 °.
Further optionally, an included angle between the first filter 131 and the optical axis of the measurement laser passing through the first collimating lens 1311 is 45 °; the angle between the first filter 131 and the optical axis of the indicator light after passing through the second collimating lens 1312 is 45 °.
Referring to fig. 2, a first collimating lens 1311 is disposed on the light exit side of the laser light source 110, and the measurement laser light emitted from the laser light source 110 is processed by the first collimating lens 1311 to become parallel light. The first filter 131 is disposed on the light exit side of the first collimating lens 1311, and the parallel measurement laser light passing through the first collimating lens 1311 is transmitted through the first filter 131. The second collimator lens 1312 is disposed on the light emitting side of the indicator light source 120, and the indicator light emitted from the indicator light source 120 is processed by the second collimator lens 1312 to be parallel light. The first filter 131 is disposed obliquely with respect to the first and second collimating lenses 1311 and 1312. And the angle between the optical axis of the measurement laser light passing through the first collimator lens 1311 and the first filter 131 (angle γ in fig. 2) is 45 °, and the angle between the optical axis of the indication light passing through the second collimator lens 1312 and the first filter 131 (angle δ in fig. 2) is also 45 °, and both angles are equal. I.e. angle y and angle δ are equal in fig. 2.
By setting the angle between the optical axes of the first filter 131 and the indicating light passing through the second collimating lens 1312 to be equal to the angle between the optical axes of the first filter 131 and the measuring laser light passing through the first collimating lens 1311, the indicating light emitted by the indicating light source 120 can be overlapped with the measuring laser light passing through the first filter 131 after being reflected by the first filter 131. And then the indicating light and the measuring laser are emitted along the same optical path and irradiate on a target object to be measured, so that the specific position of the object is displayed while the distance of the object is measured.
In other alternative embodiments of the present application, each of the first collimating lens 1311 and the second collimating lens 1312 may select other optical elements capable of converting the measuring laser light and the indicating light into parallel light, such as a convex lens, a convex lens group, a concave lens, a convex lens group, and the like.
In other alternative embodiments of the present application, the angle value of the angle between the first filter 131 and the optical axis of the indicator light passing through the second collimating lens 1312 may be selected to be other angle values according to the actual setting position. The angle value of the angle between the first filter 131 and the optical axis of the measurement laser light passing through the first collimator lens 1311 may be selected from other angle values according to the actual setting position. Both may be kept equal. For example, 60 ° each, 50 ° each, etc.
Further, the receiving assembly 130 includes a receiving mirror group 140 and a detector 150.
The receiving mirror group 140 is configured to receive the reflected light reflected by the object to be measured and selectively output the measurement light in the reflected light. The detector 150 is used to receive the measurement light in the reflected light.
In some embodiments of the present application, referring to fig. 1 or fig. 2, the receiving lens group 140 includes a converging lens 141 and a second filter 142, the second filter 142 is disposed on the light emitting side of the converging lens 141, and the second filter 142 is disposed in parallel with the converging lens 141.
The converging lens 141 may be a plano-convex lens.
The second filter 142 is made of the same material as the first filter 131, and is a filter element capable of transmitting laser light and reflecting visible light.
With continued reference to fig. 1 or 2, the second filter 142 is disposed in parallel with respect to the condensing lens 141 so that the reflected light of the object to be measured condensed by the condensing lens 141 can directly reach (without a change in optical path) the second filter 142. The second filter 142 is disposed in parallel with the detector 150, so that the light beam transmitted through the second filter 142 can directly reach (without changing the optical path) the detector 150, thereby increasing the transmission speed. Meanwhile, since the second filter 142 only allows the measuring laser to pass through, the indicating light is reflected by the second filter 142, and thus only the measuring laser reaching the detector 150 avoids interference, and improves stability and accuracy.
Further, the detector 150 selects a photodetector. Because a general photoelectric detector is more sensitive to the near infrared band, the sensitivity of measurement can be effectively improved, and the measurement distance is longer.
Further, a condensing lens 141 is disposed near the laser light source 110.
It should be noted that, in a specific setting, a small distance between the pointing light source 120 and the laser light source 110 is ensured as much as possible.
The laser rangefinder optical structure 100 can be applied to either pulse method ranging or phase method ranging.
Some embodiments of the present application also provide a laser range finder comprising the laser range finder optical structure 100, the controller 200, and the power module 300 provided as described in the above embodiments.
Further, the detector 150, the laser source 110, and the indicating light source 120 are all connected to the controller 200. The power module 300 is connected to the controller 200, and the power module 300 provides power to the entire circuit system of the laser range finder.
Further, the laser range finder further includes a display module 400, a communication module 500, and a key module 600. The display module 400 is connected to the controller 200 and is used for displaying information sent by the controller 200. The communication module 500 is connected to the controller 200 for exchanging data with an external terminal device in wireless communication. The key module 600 is connected to the controller 200, and is used for input operation of the human-computer interface and transmitting input information to the controller 200.
Referring to fig. 4, the controller 200 selects the MCU, the display module 400 is connected to the controller 200 through a wire, and the display module 400 is used to display text, pictures, and digital information. The power module 300 is connected to the controller 200 through a wire to supply power to the entire circuit system of the laser range finder. Meanwhile, the controller 200 detects the voltage and temperature of the power module 300 in real time to perform overvoltage protection and undervoltage protection. The key module 600 is connected to the controller 200 through an electric wire, the key module 600 is used for human-computer interface input operation, and the controller 200 is used for receiving the key information of the key module 600, judging the key input information, and controlling the display module 400 to display corresponding operation information. The communication module 500 is connected to the controller 200 through a wire, and wireless communication between the laser range finder and other instrument devices is realized through the operation of the controller 200 to exchange data.
With reference to fig. 1, 3 and 4, the laser rangefinder is used as follows:
during measurement, the controller 200 controls the laser source 110 to emit measurement laser, the controller 200 records the emission time t1, the measurement laser passes through the first optical filter 131, and the indication light source 120 also emits indication light, which is transmitted to the first optical filter 131 to be reflected and then propagates along the same optical axis as the measurement laser. Then the measuring laser and the indicating light are collimated and emitted through the collimating lens 132, and are reflected to the converging lens 141 after hitting the target object, the converging lens 141 converges the reflected light and then reaches the detector 150 through the second filter 142 (the indicating light is reflected by the second filter 142), the detector 150 generates a photoelectric effect to generate a pulse current and transmits the pulse current to the controller 200, the controller 200 obtains a receiving time t2 through signal screening and analysis, and the distance L between the laser range finder and the target object is obtained through calculation as c (t2-t1)/2(c is the light speed of the measuring laser).
The laser range finder can achieve millimeter-level measurement precision through accurate matching of circuit light paths.
With reference to fig. 2, 3 and 4, the laser rangefinder is used as follows:
during measurement, the controller 200 controls the laser source 110 to emit measurement laser, the controller 200 records an emission time t1, the measurement laser is collimated by the first collimating lens 1311 and passes through the first filter 131, the indication light source 120 also emits indication light, the indication light is collimated by the second collimating lens 1312 and passes through the first filter 131, and the indication light is emitted by the first filter 131, so that the propagation path is changed to propagate along the same optical axis as the measurement laser. Then the measuring laser and the indicating light simultaneously strike the target object and then are reflected to the converging lens 141, the converging lens 141 converges the reflected light and then reaches the detector 150 through the second filter 142 (the indicating light is reflected by the second filter 142), the detector 150 generates a photoelectric effect to generate a pulse current and transmits the pulse current to the controller 200, the controller 200 obtains a receiving time t2 through signal screening analysis, and the distance L between the laser range finder and the target object is obtained through calculation as c (t2-t1)/2(c is the light speed of the measuring laser).
The laser range finder can achieve millimeter-level measurement precision through accurate matching of circuit light paths.
In other alternative embodiments of the present application, there is provided a laser rangefinder having substantially the same structure as the laser rangefinder provided in the previous embodiment, except that the laser rangefinder uses a phase method to calculate the distance to the object to be measured.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A laser rangefinder optical structure, comprising:
a measurement assembly for emitting measurement laser light;
the indicating light assembly is used for emitting indicating light, and the indicating light is visible light;
a first optical filter capable of passing the measurement laser light and reflecting the indication light; the first filter is arranged on the light emitting paths of the measuring laser and the indicating light and used for adjusting the measuring laser and the indicating light to coincide with each other; and
a receiving component for receiving the measuring laser in the reflected light reflected by the object to be measured.
2. The laser range finder optical structure of claim 1,
the measuring assembly comprises a collimating lens and a laser source; the first filter is arranged on the light-emitting side of the laser source; the collimating lens is arranged on the light-emitting side of the first filter lens and is used for converting the superposed measuring laser and the superposed indicating light into parallel light; the indicating light assembly comprises an indicating light source; the included angle between the first filter lens and the optical axis of the measuring laser emitted by the laser source is equal to the included angle between the first filter lens and the optical axis of the indicating light emitted by the indicating light source.
3. The laser range finder optical structure of claim 2,
the included angle between the first filter and the optical axis of the measuring laser emitted by the laser source is 30-60 degrees;
the included angle between the first filter lens and the optical axis of the indicating light emitted by the indicating light assembly is 30-60 degrees.
4. The laser range finder optical structure of claim 1,
the measuring assembly comprises a first collimating lens and a laser source, the first collimating lens is arranged on the light emergent side of the laser source, and the first collimating lens is used for converting measuring laser emitted by the laser source into parallel light;
the indicating light assembly comprises a second collimating lens and an indicating light source; the second collimating lens is arranged on the light-emitting side of the indicating light source and is used for converting the indicating light emitted by the indicating light source into parallel light;
the first filter is arranged on the light-emitting sides of the first collimating lens and the second collimating lens;
the included angle between the optical axis of the measuring laser after the first filter lens and the first collimating lens is equal to the included angle between the optical axis of the indicating light after the second collimating lens and the first filter lens.
5. The laser range finder optical structure of claim 4,
the included angle between the first filter lens and the optical axis of the measuring laser passing through the first collimating lens is 30-60 degrees;
the included angle between the first filter lens and the optical axis of the indicating light passing through the second collimating lens is 30-60 degrees.
6. Laser range finder optical structure according to one of claims 1 to 5,
the receiving assembly comprises a receiving lens group and a detector;
the receiving mirror group is used for receiving reflected light reflected by the object to be measured and selectively outputting measuring laser in the reflected light;
the detector is used for receiving the measuring laser in the reflected light.
7. The laser range finder optical structure of claim 6,
the receiving lens group comprises a converging lens and a second filter lens, and the converging lens is arranged on a light incoming path of the reflected light and is used for converging the reflected light to the detector; the second filter is arranged on the light-emitting side of the convergent lens and is parallel to the convergent lens; the second filter is capable of transmitting the measurement laser light and reflecting the indication light.
8. The laser range finder optical structure of claim 1,
the measuring laser is near-infrared laser.
9. A laser rangefinder comprising a laser rangefinder optical structure according to any of claims 1-8;
the receiving assembly, the measuring assembly and the indicating light assembly are all connected to the controller; and
and the power supply module is connected with the controller and provides electric energy for the whole circuit system of the laser range finder.
10. The laser range finder of claim 9,
the laser range finder also comprises a display module, a communication module and a key module;
the display module is connected with the controller and is used for displaying information sent by the controller;
the communication module is connected with the controller and used for wirelessly communicating with external terminal equipment to exchange data;
the key module is connected with the controller and used for inputting operation of a human-computer interaction interface and transmitting input information to the controller.
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| CN201921097672.3U CN210514622U (en) | 2019-07-12 | 2019-07-12 | Laser range finder optical structure and laser range finder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022012031A1 (en) * | 2020-07-16 | 2022-01-20 | 深圳市度彼电子有限公司 | Laser rangefinder employing two light sources |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022012031A1 (en) * | 2020-07-16 | 2022-01-20 | 深圳市度彼电子有限公司 | Laser rangefinder employing two light sources |
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Effective date of registration: 20221108 Address after: 518000 4th floor, building e, Tangtou first industrial zone, Tangtou community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Dolby Laser Co.,Ltd. Address before: 518000 Shenzhen, Guangdong Guangming New District Gongming office, Tian Liao community guangguangxin Park West seven, Qiao de science and Technology Park building, six B building. Patentee before: SHENZHEN DOBIY ELECTRONIC Co.,Ltd. |
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