CN212483839U - Light-emitting optical axis adjusting device of laser ranging system - Google Patents

Abstract

The utility model provides a light-emitting optical axis adjusting device of laser rangefinder system belongs to laser rangefinder technical field. The light-emitting optical axis adjusting device includes: the reflecting mirror is arranged at the plane end of the collecting mirror and covers the central hole of the collecting mirror; the visible light source is used for emitting a visible light beam to the reflector so that the visible light beam is reflected to an emitting point of the visible light source through the reflector, wherein a light spot of the visible light beam on the reflector is superposed with the orthographic projection of the geometric center of the central hole on the reflector; the laser is used for emitting a light beam, wherein the light beam is emitted through the optical axis of the collimating mirror; and the collimating mirror adjusting frame is used for adjusting the inclination angle of the optical axis of the collimating mirror so as to enable the light spot of the light beam emitted by the laser to be positioned in a preset range taking the emergent point of the visible light source as the center. The utility model provides a laser rangefinder system's light-emitting optical axis adjusting device can improve the regulation precision of collimating mirror, reduces the error of the emergent light of laser rangefinder system and the coaxial setting of optical axis of condensing lens.

Description

Light-emitting optical axis adjusting device of laser ranging system

Technical Field

The utility model relates to a laser rangefinder technical field particularly, relates to a laser rangefinder system's light-emitting optical axis adjusting device.

Background

In laser ranging, a target object is illuminated by laser, after the laser forms diffuse reflection on the surface of the target object, part of backward scattered light returns along the original path, reaches a condenser lens and is converged to be received by a photoelectric sensor. The time difference is obtained through the time points triggered by the emergent light and the received light, and the distance of the target object can be calculated by multiplying the time difference by the light speed.

In order to enable relatively high measurement accuracy, the laser ranging system may be provided as an optical structure in which the outgoing light is coaxial with the optical axis of the condenser lens. However, in the current laser ranging system, the adjustment accuracy of the optical axis of the collimating mirror is low, and the error of the coaxial arrangement between the outgoing light collimated by the collimating mirror and the optical axis of the condenser lens is large, so that the spot of the laser ranging system after the condenser lens converges the return light is large, and the distance measurement accuracy is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a laser rangefinder system's light-emitting optical axis adjusting device can improve the regulation precision of collimating mirror, reduces the contained angle between the optical axis of the emergent light of laser rangefinder system and condensing lens to reduce the error of the emergent light of laser rangefinder system and the coaxial setting of optical axis of condensing lens.

The embodiment of the utility model is realized like this:

the embodiment of the utility model provides a laser rangefinder system's light-emitting optical axis adjusting device, laser rangefinder system including the condensing lens that has the centre bore and set up the collimating mirror in the centre bore, the device includes:

the reflecting mirror is arranged at the plane end of the collecting mirror and covers the central hole of the collecting mirror;

the visible light source is used for emitting a visible light beam to the reflector so that the visible light beam is reflected to an emitting point of the visible light source through the reflector, wherein a light spot of the visible light beam on the reflector is superposed with the orthographic projection of the geometric center of the central hole on the reflector;

the laser is used for emitting a light beam, wherein the light beam is emitted through the optical axis of the collimating mirror;

and the collimating mirror adjusting frame is used for adjusting the inclination angle of the optical axis of the collimating mirror so as to enable the light spot of the light beam emitted by the laser to be positioned in a preset range taking the emergent point of the visible light source as the center.

Optionally, the apparatus further comprises:

and the adjusting table is used for rotating and adjusting the condensing lens by taking the light spot of the visible light source on the reflecting mirror as a center so as to enable the light spot of the visible light beam reflected by the reflecting mirror on the visible light source to coincide with the emergent point of the visible light source.

Optionally, the apparatus further comprises:

the reflecting plate is used for receiving and reflecting the light beam emitted by the laser and emitted by the optical axis of the collimating mirror;

the photoelectric sensor is used for moving along a first direction so that light spots of light beams reflected by the reflecting plate and converged by the collecting lens sweep across the photoelectric sensor along a straight line where the first direction is located, the photoelectric sensor receives the light spots converged by the collecting lens and converts the light spots into electric signals, and the first direction is perpendicular to an optical axis of the collimating lens; or the photoelectric sensors are used for respectively moving along a first direction and a second direction so that light spots formed by light beams reflected by the reflecting plate after being converged by the condenser lens respectively sweep along a straight line where the first direction is located and a straight line where the second direction is located, the photoelectric sensors respectively receive the light spots converged by the condenser lens and convert the light spots into electric signals, wherein the second direction is respectively vertical to the first direction and the optical axis of the collimating mirror;

and the fixing device is used for fixing the collimating mirror in the central hole of the collecting mirror if the scanning length of the light spot, which is converged by the collecting mirror, scanned by the photoelectric sensor is smaller than a preset value.

Optionally, the device further comprises a signal receiver in signal connection with the photoelectric sensor;

the signal receiver is used for receiving the electric signal sent by the photoelectric sensor;

and the fixing device is specifically used for fixing the collimating mirror in the central hole of the collecting lens if the displacement of the photoelectric sensor in the starting and stopping time period of the electric signal is smaller than a preset value.

Optionally, the preset value is the sum of the maximum allowable diameter of the light spot converged by the condenser lens and the diameter of the sensing surface of the photoelectric sensor.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides a pair of laser rangefinder system's light-emitting optical axis adjusting device, its laser rangefinder system of adjusting including the condensing lens that has the centre bore and set up the collimating mirror in the centre bore, this light-emitting optical axis adjusting device includes visible light source, speculum and laser instrument, the speculum is disposed in the plane end of condensing lens and covers the centre bore of condensing lens. The visible light beam can be emitted to the reflector through the visible light source, so that the visible light beam is reflected to the emitting point of the visible light source through the reflector. The light spot of the visible light beam on the reflector coincides with the orthographic projection of the geometric center of the central hole on the reflector, and the visible light beam reflected by the reflector returns along the original path of the optical axis of the visible light source, so the optical axis of the visible light source is vertical to the reflector at the moment, and the optical axis of the visible light beam coincides with the orthographic projection of the geometric center of the central hole on the reflector at the moment, and the reflector is arranged at the plane end of the condenser and is parallel to the plane end of the condenser, so that the optical axis of the visible light source coincides with the optical axis of the condenser (and the visible light source is positioned on the optical axis of the condenser) at the moment. Then, the reflector is unloaded, the collimating mirror is installed in the central hole of the collecting mirror, and the laser is used for emitting a light beam, so that the light beam is emitted out through the optical axis of the collimating mirror. Then, the inclination angle of the optical axis of the collimating mirror is adjusted to enable the light spot of the light beam emitted by the laser to be located in a preset range (preset range set according to an allowed error) with the exit point of the visible light source as the center, at this time, the optical axis of the collimating mirror can be considered to be coincident with the optical axis of the laser, and because the optical axis of the visible light source is coincident with the optical axis of the collecting mirror after the steps, the optical axis of the collimating mirror is coincident with the optical axis of the collecting mirror at this time. Through the device, the optical axis of the alignment straight mirror that can be accurate relatively is adjusted to reduce the error of the coaxial setting of the optical axis of collimating mirror and the optical axis of condensing lens, thereby reduce the error of the coaxial setting of the optical axis of the emergent light of laser rangefinder system and condensing lens.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic flow chart of a method for adjusting an optical axis of a laser ranging system according to an embodiment of the present invention;

fig. 2 is a second schematic flow chart of a light-emitting optical axis adjusting method of a laser ranging system according to an embodiment of the present invention;

fig. 3 is a third schematic flow chart of a light-emitting optical axis adjusting method of a laser ranging system according to an embodiment of the present invention;

fig. 4 is a fourth schematic flow chart of a light-emitting optical axis adjusting method of a laser ranging system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an outgoing light axis adjusting device of a laser ranging system according to an embodiment of the present invention;

fig. 6 is a second schematic structural view of a light-emitting optical axis adjusting device of a laser ranging system according to an embodiment of the present invention;

fig. 7 is a third schematic structural view of a light-emitting optical axis adjusting device of a laser ranging system according to an embodiment of the present invention.

Icon: 510-a condenser lens; 520-a collimating mirror; 610-a mirror; 620-visible light source; 630-a laser; 640-a collimator lens adjusting bracket; 650-a reflector plate; 660-photosensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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 present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically 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 invention can be understood in specific cases to those skilled in the art.

The embodiment of the utility model provides a light-emitting optical axis adjusting method of laser rangefinder system, be applied to the light-emitting optical axis adjusting device of laser rangefinder system, the laser rangefinder system includes condensing lens 510 that has the centre bore and sets up collimating mirror 520 in the centre bore, light-emitting optical axis adjusting device includes visible light source 620, speculum 610 and laser instrument 630, speculum 610 is disposed in the plane end of condensing lens 510 and covers the centre bore of condensing lens 510; as shown in fig. 1, 5 and 6, the method includes:

s101: the visible light source 620 emits a visible light beam to the reflector 610, so that the visible light beam is reflected by the reflector 610 to an emission point of the visible light source 620, wherein a light spot of the visible light beam on the reflector 610 coincides with an orthographic projection of a geometric center of the central hole on the reflector 610.

S102: the mirror 610 is removed and the collimating mirror 520 is mounted in the central hole of the collection mirror 510.

S103: laser 630 emits a light beam that exits through the optical axis of collimating mirror 520.

S104: the inclination angle of the optical axis of the collimator lens 520 is adjusted so that the spot of the light beam emitted from the laser 630 is within a preset range centered on the exit point of the visible light source 620.

When the visible light beam reflected by the reflector 610 does not return to the exit point of the visible light source 620, the angle of the integral structure of the condenser 510 and the reflector 610 or the angle of the visible light source 620 entering the reflector 610 may be adjusted to finally enable the reflector to reflect the visible light beam to the exit point of the visible light source 620.

It should be noted that, in practical applications, the distance from the visible light source 620 to the condenser 510 may be 15 meters to 25 meters, for example, 15 meters, 17 meters, 20 meters, 22 meters, 25 meters, and so on. Of course, in practical applications, the distance between the visible light source 620 and the condenser 510 may be other values, and is not limited herein.

In practical applications, the height of the visible light source 620 may be set flush with the condenser lens 510, and of course, in the embodiment of the present invention, the height of the visible light source 620 may also be set in other settings, which is not limited herein.

Wherein, in the embodiment of the present invention, the visible light source 620 can also be disposed on the adjusting frame to adjust the position of the visible light source 620 through the adjusting frame, and the position of the light spot of the visible light beam on the reflector 610, so that the light spot of the visible light beam on the reflector 610 coincides with the orthographic projection of the geometric center of the central hole on the reflector 610.

In practical applications, the tilt angle of the optical axis of the collimator 520 can be adjusted by the collimator adjusting frame 640. Unloading mirror 610 and installing collimator mirror 520 may be performed by a robot. Of course, the above is only an exemplary implementation manner of the embodiment of the present invention, in the embodiment of the present invention, the inclination angle of the optical axis of the collimator mirror 520 can also be adjusted by other manners, and the unloading mirror 610 and the installing collimator mirror 520 can also be operated by other manners, and there is no specific limitation here, for example, the collimator mirror 520 is adjusted by a person, and the unloading of the mirror 610 and the installing of the collimator mirror 520 are performed by a person, and the like.

In this method, the laser 630 may be directly connected to the collimating mirror 520, or the laser 630 may be connected to the collimating mirror 520 through an optical fiber, which is not limited herein.

In practical applications, a person skilled in the art can set the preset range in the above steps according to an actually allowable error range of the coaxial arrangement of the optical axis of the collimating mirror 520 and the optical axis of the collecting mirror 510. Of course, the preset range may also be set to coincide with the exit point of the visible light source 620 to further improve the accuracy of the optical axis adjustment of the collimator 520.

The embodiment of the utility model provides a laser rangefinder system's light-emitting optical axis adjusting method is applied to laser rangefinder system's light-emitting optical axis adjusting device, and laser rangefinder system includes the condensing lens 510 that has the centre bore and sets up collimating mirror 520 in the centre bore, and light-emitting optical axis adjusting device includes visible light source 620, speculum 610 and laser instrument 630, and speculum 610 is disposed in the plane end of condensing lens 510 and covers the centre bore of condensing lens 510. The visible light beam may be first emitted from the visible light source 620 to the reflector 610, so that the visible light beam is reflected by the reflector 610 to the emission point of the visible light source 620. The light spot of the visible light beam on the reflector 610 coincides with the orthographic projection of the geometric center of the central hole on the reflector 610, and the visible light beam reflected by the reflector 610 returns along the original path of the optical axis of the visible light source 620, so the optical axis of the visible light source 620 is perpendicular to the reflector 610 at this time, and because the light spot of the visible light beam on the reflector 610 coincides with the orthographic projection of the geometric center of the central hole on the reflector 610, and the reflector 610 is disposed at the planar end of the condenser 510 and parallel to the planar end, it can be considered that the optical axis of the visible light source 620 coincides with the optical axis of the condenser 510 at this time (and the visible light source 620 is located on the optical axis of the condenser 510). Then, the reflector 610 is removed and the collimator 520 is installed in the central hole of the condenser 510, and the laser 630 emits a light beam, so that the light beam exits through the optical axis of the collimator 520. Then, by adjusting the inclination angle of the optical axis of the collimator lens 520, the light spot of the light beam emitted by the laser 630 is located within a preset range (preset range set according to an allowable error) centered on the exit point of the visible light source 620, at this time, the optical axis of the collimator lens 520 may be considered to coincide with the optical axis of the laser 630, and since the optical axis of the visible light source 620 coincides with the optical axis of the condenser lens 510 after the above steps, the optical axis of the collimator lens 520 coincides with the optical axis of the condenser lens 510 at this time. By the method, the optical axis of the collimating mirror 520 can be accurately adjusted relatively, so that the error of coaxial arrangement of the optical axis of the collimating mirror 520 and the optical axis of the collecting mirror 510 is reduced, and the error of coaxial arrangement of the emergent light of the laser ranging system and the optical axis of the collecting mirror 510 is reduced.

Optionally, the light-exiting optical axis adjusting apparatus further includes an adjusting stage, the visible light source 620 emits a visible light beam to the reflector 610, so that the visible light beam is reflected by the reflector 610 to an exit point of the visible light source 620, as shown in fig. 2, including:

s201: the visible light source 620 emits a visible light beam toward the reflector 610.

S202: the adjusting table rotates and adjusts the condenser 510 around the spot of the visible light source 620 on the reflector 610 as a center, so that the spot of the visible light beam reflected by the reflector 610 on the visible light source 620 coincides with the exit point of the visible light source 620.

When the light-emitting optical axis adjusting device of the laser ranging system further comprises an adjusting table, the integral structure of the condensing lens 510 and the reflecting mirror 610 is adjusted by adjusting the table pair, and the light spot of the visible light source 620 on the reflecting mirror 610 is used as a center for rotation adjustment, so that the position of the light spot of the visible light source 620 on the reflecting mirror 610 can be kept unchanged, and meanwhile, the light path of the visible light beam of the visible light source 620 reflected by the reflecting mirror 610 can be changed, and the light spot of the visible light beam reflected by the reflecting mirror 610 on the visible light source 620 is coincided with the emergent point of the visible light source 620.

The condensing lens 510 is adjusted by the adjusting table, so that the light spot of the visible light beam reflected by the reflecting mirror 610 on the visible light source 620 coincides with the emergent point of the visible light source 620, the operation is simple and convenient, and the automatic control is convenient.

Optionally, the light-exiting optical axis adjusting device further includes a photosensor 660, a fixing device, and a reflection plate 650, and adjusts an optical axis inclination angle of the collimator mirror 520 so that a spot of the light beam emitted by the laser 630 is located within a preset range centered on the exit point of the visible light source 620, as shown in fig. 3 and 7, the method further includes:

s301: the reflective plate 650 receives and reflects the light beam of the laser 630 emitted through the optical axis of the collimator mirror 520.

S302: the photoelectric sensor 660 moves in a first direction, so that light spots of the light beams reflected by the reflecting plate 650 and converged by the condenser 510 sweep across the photoelectric sensor 660 along a straight line where the first direction is, the photoelectric sensor 660 receives the light spots converged by the condenser 510 and converts the light spots into electric signals, wherein the first direction is perpendicular to the optical axis of the collimator 520.

S303: if the scanning length of the light spot collected by the collecting mirror 510 and scanned by the photoelectric sensor 660 is smaller than the preset value, the fixing device fixes the collimating mirror 520 in the central hole of the collecting mirror 510.

Typically, the photosensor 660 is disposed at the focal point of the collection optic 510. The reflective plate 650 may be disposed at the position of the visible light source 620, or may be disposed at other positions, which is not limited herein.

Through the movement of the photoelectric sensor 660, the light spot converged by the condenser 510 sweeps across the photoelectric sensor 660 along the straight line where the first direction is located, and the diameter of the sensing surface of the photoelectric sensor 660 is a determined value, so that the diameter of the light spot converged by the condenser 510 can be represented according to the scanning length of the light spot converged by the condenser 510 sweeping across the photoelectric sensor 660, and therefore, when the scanning length of the light spot converged by the condenser 510 sweeping across the photoelectric sensor 660 is smaller than a preset value, it is indicated that the light spot converged by the condenser 510 meets a preset requirement, that is, it is indicated that an error of the coaxial arrangement of the optical axis of the collimator 520 and the optical axis of the condenser 510 meets the requirement.

The preset value may be set according to an allowable maximum diameter of the light spot collected by the collecting lens 510. Illustratively, the preset value is the sum of the maximum allowable diameter of the light spot converged by the condenser lens 510 and the diameter of the sensing surface of the photoelectric sensor 660. Namely, the light spot (the diameter of which is the maximum allowable diameter) converged by the condenser lens 510 sweeps across the sensing surface of the photosensor 660, and the moving distance of the photosensor 660 (namely, the scanning length of the photosensor 660 swept across the light spot when the diameter of the light spot converged by the condenser lens 510 is the maximum allowable diameter). For example, the maximum allowable diameter of the light spot converged by the condenser lens 510 is 0.04mm, and the diameter of the sensing surface of the photoelectric sensor 660 is 0.5mm, and then the preset value is 0.54 mm.

Optionally, the photosensor 660 moves along the first direction, so that the light spot of the light beam reflected by the reflector 650 after being converged by the condenser 510 sweeps across the photosensor 660 along a straight line in the first direction, and the method further includes:

the photoelectric sensor 660 moves along a second direction, so that light spots of the light beams reflected by the reflecting plate 650 and converged by the condenser 510 sweep across the photoelectric sensor 660 along a straight line where the second direction is located, the photoelectric sensor 660 receives the light spots converged by the condenser 510 and converts the light spots into electric signals, and the second direction is perpendicular to the first direction and the optical axis of the collimating mirror 520 respectively.

Through the above steps, the photoelectric sensor 660 is moved in the second direction again to verify whether the error of the coaxial arrangement of the optical axis of the collimating mirror 520 and the optical axis of the collecting mirror 510 meets the requirement, so that the adjustment effect of the optical axis of the collimating mirror 520 can be further verified.

It should be noted that, in practical applications, if the scanning length of the light spot converged by the condenser 510 and scanned by the photosensor 660 in the above embodiment is greater than a preset value, the optical axis of the collimator 520 needs to be adjusted by adopting the method again. If the scanning length is equal to the preset value, it can be determined whether to readjust the optical axis of the collimator 520 according to the actual situation.

It should be further noted that, in the above embodiment, the fixing device may use an ultraviolet curing instrument to fix the collimator 520. Accordingly, when the collimator 520 is installed in the central hole of the condenser 510, an ultraviolet glue may be applied to the periphery of the collimator 520, so that the ultraviolet curing apparatus can fix the collimator 520 by curing the ultraviolet glue. Of course, the fixing device may also be other devices, and is not limited herein as long as the collimator lens 520 can be fixed in the central hole. For example, a thermocuring instrument or the like may be used.

Optionally, the light-emitting optical axis adjusting device of the laser ranging system further includes a signal receiver, and the signal receiver is in signal connection with the photoelectric sensor 660; if the scanning length of the light spot collected by the collecting mirror 510 and scanned by the photoelectric sensor 660 is smaller than the preset value, the collimating mirror 520 is fixed in the central hole of the collecting mirror 510, as shown in fig. 4, including:

s401: the signal receiver receives the electrical signal sent by the photosensor 660.

S402: if the displacement of the photosensor 660 during the start-stop period of the electrical signal is smaller than the predetermined value, the fixing device fixes the collimating lens 520 in the central hole of the collecting lens 510.

Through setting up signal receiver, can detect the signal of telecommunication that photoelectric sensor 660 sent to can judge the opportunity that the facula after the condensing lens 510 gathers sweeps photoelectric sensor 660, thereby can be relatively accurate acquire the displacement volume of photoelectric sensor 660 when the facula sweeps photoelectric sensor 660, the displacement volume of this photoelectric sensor 660 is the scanning length that the facula sweeps photoelectric sensor 660.

The signal receiver may be an oscilloscope or the like capable of displaying the electrical signal output of the photosensor 660.

The embodiment of the utility model provides a on the other hand, as shown in fig. 5, fig. 6, provide a laser rangefinder system's light-emitting optical axis adjusting device, laser rangefinder system is including the condensing lens 510 that has the centre bore and set up the collimating mirror 520 in the centre bore, and the device includes:

a reflector 610 for being disposed at a planar end of the condenser 510 and covering a central hole of the condenser 510;

the visible light source 620 is used for emitting a visible light beam to the reflector 610 so that the visible light beam is reflected to an emitting point of the visible light source 620 through the reflector 610, wherein a light spot of the visible light beam on the reflector 610 coincides with an orthographic projection of a geometric center of the center hole on the reflector 610;

a laser 630 for emitting a light beam, wherein the light beam exits through the optical axis of the collimating mirror 520;

and the collimator lens adjusting frame 640 is used for adjusting the inclination angle of the optical axis of the collimator lens 520, so that the light spot of the light beam emitted by the laser 630 is located in a preset range taking the exit point of the visible light source 620 as the center.

The embodiment of the utility model provides a laser rangefinder system's light-emitting optical axis adjusting device, its laser rangefinder system of adjusting include the condensing lens 510 that has the centre bore and set up collimating mirror 520 in the centre bore, and this light-emitting optical axis adjusting device includes visible light source 620, speculum 610 and laser 630, and speculum 610 is disposed in the plane end of condensing lens 510 and covers the centre bore of condensing lens 510. The visible light beam may be first emitted from the visible light source 620 to the reflector 610, so that the visible light beam is reflected by the reflector 610 to the emission point of the visible light source 620. The light spot of the visible light beam on the reflector 610 coincides with the orthographic projection of the geometric center of the central hole on the reflector 610, and the visible light beam reflected by the reflector 610 returns along the original path of the optical axis of the visible light source 620, so the optical axis of the visible light source 620 is perpendicular to the reflector 610 at this time, and because the light spot of the visible light beam on the reflector 610 coincides with the orthographic projection of the geometric center of the central hole on the reflector 610, and the reflector 610 is disposed at the planar end of the condenser 510 and parallel to the planar end, it can be considered that the optical axis of the visible light source 620 coincides with the optical axis of the condenser 510 at this time (i.e., the visible light source 620 is located on the optical axis of the condenser 510). Then, the reflector 610 is removed and the collimator 520 is installed in the central hole of the condenser 510, and the laser 630 emits a light beam, so that the light beam exits through the optical axis of the collimator 520. Then, by adjusting the inclination angle of the optical axis of the collimator lens 520, the light spot of the light beam emitted by the laser 630 is located within a preset range (preset range set according to an allowable error) centered on the exit point of the visible light source 620, at this time, the optical axis of the collimator lens 520 may be considered to coincide with the optical axis of the laser 630, and since the optical axis of the visible light source 620 coincides with the optical axis of the condenser lens 510 after the above steps, the optical axis of the collimator lens 520 coincides with the optical axis of the condenser lens 510 at this time. Through the device, the optical axis of the alignment straight mirror 520 that can be accurate relatively is adjusted to reduce the error of the coaxial setting of optical axis of the optical axis of collimating mirror 520 and condensing mirror 510, thereby reduce the error of the coaxial setting of optical axis of the emergent light of laser rangefinder system and condensing mirror 510.

Optionally, the apparatus further comprises: and an adjusting table (not shown in the figure) for rotationally adjusting the condenser lens 510 with the spot of the visible light source 620 on the reflector 610 as a center so that the spot of the visible light beam reflected by the reflector 610 on the visible light source 620 coincides with the exit point of the visible light source 620.

Optionally, as shown in fig. 7, the apparatus further includes:

a reflection plate 650 for receiving and reflecting the light beam emitted from the laser 630 emitted through the optical axis of the collimator mirror 520;

the photoelectric sensor 660 is configured to move in a first direction, so that light spots of the light beam reflected by the reflection plate 650 and collected by the collecting mirror 510 sweep across the photoelectric sensor 660 along a straight line where the first direction is located, and the photoelectric sensor 660 receives the light spots collected by the collecting mirror 510 and converts the light spots into electric signals, where the first direction is perpendicular to an optical axis of the collimating mirror 520; or the light source is used for moving along a first direction and a second direction respectively, so that light spots formed by light beams reflected by the reflecting plate 650 after being converged by the light collecting mirror 510 sweep the photoelectric sensor 660 along a straight line where the first direction is located and a straight line where the second direction is located respectively, the photoelectric sensor 660 receives the light spots converged by the light collecting mirror 510 and converts the light spots into electric signals, wherein the second direction is perpendicular to the first direction and the optical axis of the collimating mirror 520 respectively;

and a fixing device (not shown) for fixing the collimating mirror 520 in the central hole of the collecting mirror 510 if the scanning length of the light spot collected by the collecting mirror 510 and scanned by the photoelectric sensor 660 is less than a preset value.

Optionally, the apparatus further comprises a signal receiver (not shown in the figure), which is in signal connection with the photosensor 660;

a signal receiver for receiving the electrical signal sent by the photoelectric sensor 660;

the fixing device is specifically configured to fix the collimating mirror 520 in the central hole of the collecting mirror 510 if the displacement of the photoelectric sensor 660 within the start-stop period of the electrical signal is smaller than a preset value.

It can be clearly understood by those skilled in the art that, for the convenience and simplicity of description, the specific working process and setting of the device described above can refer to the corresponding process and description of the method in the foregoing method embodiment, which is not repeated herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a laser rangefinder system's light-emitting optical axis adjusting device which characterized in that, laser rangefinder system including the condensing lens that has the centre bore and set up in collimating mirror in the centre bore, the device includes:

the reflecting mirror is arranged at the plane end of the collecting mirror and covers the central hole of the collecting mirror;

the visible light source is used for emitting a visible light beam to the reflector so that the visible light beam is reflected to an emitting point of the visible light source through the reflector, wherein a light spot of the visible light beam on the reflector is coincided with an orthographic projection of the geometric center of the central hole on the reflector;

a laser for emitting a light beam, wherein the light beam exits through an optical axis of the collimating mirror;

and the collimating mirror adjusting frame is used for adjusting the inclination angle of the optical axis of the collimating mirror so as to enable the light spot of the light beam emitted by the laser to be positioned in a preset range taking the emergent point of the visible light source as the center.

2. The apparatus of claim 1, wherein the apparatus further comprises:

and the adjusting table is used for rotationally adjusting the condensing lens by taking the light spot of the visible light source on the reflecting mirror as a center so as to enable the light spot of the visible light beam reflected by the reflecting mirror on the visible light source to coincide with the emergent point of the visible light source.

3. The apparatus of claim 1 or 2, wherein the apparatus further comprises:

the reflecting plate is used for receiving and reflecting the light beam emitted by the laser and emitted by the optical axis of the collimating mirror;

the photoelectric sensor is used for moving along a first direction so that light spots of the light beams reflected by the reflecting plate and converged by the condenser lens sweep across the photoelectric sensor along a straight line where the first direction is located, the photoelectric sensor receives the light spots converged by the condenser lens and converts the light spots into electric signals, and the first direction is perpendicular to the optical axis of the collimating mirror; or the photoelectric sensors are used for respectively moving along a first direction and a second direction so that light spots of the light beams reflected by the reflecting plate after being converged by the condenser lens sweep the photoelectric sensors along a straight line where the first direction is located and a straight line where the second direction is located, the photoelectric sensors respectively receive the light spots converged by the condenser lens and convert the light spots into electric signals, wherein the second direction is respectively vertical to the first direction and the optical axis of the collimating lens;

and the fixing device is used for fixing the collimating mirror in the central hole of the collecting mirror if the scanning length of the light spot, which is converged by the collecting mirror and passes through the photoelectric sensor, is smaller than a preset value.

4. The apparatus of claim 3, further comprising a signal receiver in signal connection with the photosensor;

the signal receiver is used for receiving the electric signal sent by the photoelectric sensor;

the fixing device is specifically used for fixing the collimating lens in the central hole of the collecting lens if the displacement of the photoelectric sensor in the starting and stopping time period of the electric signal is smaller than a preset value.

5. The apparatus of claim 3, wherein the predetermined value is the sum of the maximum allowable diameter of the focused light spot of the condenser lens and the diameter of the sensing surface of the photoelectric sensor.

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