CN214097957U

CN214097957U - Laser ranging telescope

Info

Publication number: CN214097957U
Application number: CN202021914971.4U
Authority: CN
Inventors: 刘怡; 侴智; 郑以磊; 黄杰峰
Original assignee: MILESEEY TECHNOLOGY Inc
Current assignee: MILESEEY TECHNOLOGY Inc
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-08-31
Anticipated expiration: 2030-09-04

Abstract

The application relates to a laser ranging telescope which comprises a double-adhesive lens group, an eyepiece group, a steering prism group, a display element, a laser transmitter and a laser receiver. The angle of view of the double-cemented lens group is 7-8 degrees. The eyepiece group and the double-composition lens group are arranged oppositely. The steering prism group is arranged between the double-adhesive lens group and the eyepiece group. The display element is arranged between the steering prism group and the eyepiece group, and the double-adhesive lens group, the eyepiece group and the steering prism group are positioned on the first optical axis. The laser beam emitted by the laser emitter is subjected to light turning by the turning prism group, and then irradiates a target object by the double-adhesive lens group to form reflected laser. The laser receiver is used for receiving the reflected laser. The field angle of the double-cemented lens group is 7-8 degrees, the field range is enlarged, and the double-cemented lens group and the eyepiece group both adopt the simplest optical structures, so that the laser ranging telescope has a simple structure, and the volume of the laser ranging telescope is reduced.

Description

Laser ranging telescope

Technical Field

The application relates to the technical field of laser ranging, in particular to a laser ranging telescope.

Background

The laser ranging is a precise measurement technology which appears along with the development of a laser technology, the characteristics of high laser brightness, good monochromaticity, strong directivity, strong anti-interference performance and the like are utilized, laser is irradiated onto a measured object, light rays are reflected by the surface of the measured object and then return to be received by a laser receiving system, and the distance between a laser emitting point and a reflecting point is determined according to the round-trip propagation time of the light rays between the laser emitting point and the measured object or the phase change of the light rays. The laser ranging telescope is a precise ranging instrument combining a laser measuring technology and an optical telescopic system, a user can clearly aim at a remote measuring target by skillfully combining the laser measuring technology and the optical telescopic system, more humanized measuring experience is brought to the user, the measuring work becomes more intuitive, convenient and efficient through the association of measuring data and images, and the measuring accuracy is also greatly improved. In recent years, laser ranging telescopes are widely applied to the aspects of industry, agriculture, medicine, national defense construction, scientific experiments and outdoor sports such as hunting, golf and outdoor mountain climbing. However, the traditional distance measuring telescope has the problems of complex light path structure, incompact structure and small observation visual field range, and the use experience of a user is greatly discounted.

SUMMERY OF THE UTILITY MODEL

Based on this, this application provides a laser rangefinder telescope to enlarge the field of view scope, reduce the volume of laser rangefinder telescope.

A laser range telescope, comprising:

the double-polymer lens group has a field angle of 7-8 degrees;

the eyepiece group is arranged opposite to the double-composition lens group;

the steering prism group is arranged between the double-composition lens group and the eyepiece lens group;

the display element is arranged between the steering prism group and the eyepiece group and is positioned on a first optical axis together with the double-adhesive lens group, the eyepiece group and the steering prism group;

the laser transmitter emits laser beams which are subjected to light turning through the turning prism group and then irradiate a target object through the double-adhesive lens group to form reflected laser; and

a laser receiver to receive the reflected laser light.

In one embodiment, the distance from the first face of the double composition lens group to the second face of the eyepiece lens group is 88 mm.

In one embodiment, the steering prism assembly comprises:

a half pentagonal prism disposed between the double-cemented lens group and the display element; and

and the wedge-shaped prism is arranged between the semi-pentagonal prism and the laser emitter.

In one embodiment, the method further comprises the following steps:

and the roof prism is arranged between the semi-pentagonal prism and the display element.

In one embodiment, the method further comprises the following steps:

and the collimating lens is arranged between the steering prism group and the laser transmitter.

In one embodiment, the method further comprises the following steps:

and the receiving mirror is arranged between the target object and the laser receiver.

In one embodiment, the receiving mirror is an aspheric single lens, and the focal length of the receiving mirror is less than 32 mm.

In one embodiment, the receiving mirror and the laser receiver are located on a second optical axis, and the first optical axis is parallel to the second optical axis.

In one embodiment, a first multilayer antireflection film layer is disposed on the double-composition lens group, and a second multilayer antireflection film layer is disposed on the eyepiece lens group.

In one embodiment, the method further comprises the following steps:

and the processor is respectively connected with the laser transmitter and the laser receiver, is used for acquiring a distance value between a laser emitting point and a laser reflecting point, and is also connected with the display element, and is used for sending the distance value to the display element.

The laser range finder telescope comprises a double-composition lens group, an eyepiece group, a steering prism group, a display element, a laser transmitter and a laser receiver. The field angle of the double-cemented lens group is 7-8 degrees. The eyepiece group and the double-composition lens group are oppositely arranged. The steering prism group is arranged between the double-composition lens group and the eyepiece lens group. The display element is arranged between the steering prism group and the eyepiece group, and is positioned on a first optical axis with the double-adhesive lens group, the eyepiece group and the steering prism group. And after the laser beam emitted by the laser emitter is subjected to light turning by the turning prism group, the target object is irradiated by the objective lens group to form reflected laser. The laser receiver is used for receiving the reflected laser. The scene light of the target object is converged on the display element to form a real image sequentially through the double-adhesive lens group and the steering prism group, and then enters the eyes of an observer through the eyepiece group to form a visual image of the target object. The laser transmitter emits laser beams, the laser beams are subjected to light ray turning through the turning prism group and then are subjected to secondary collimation through the double-adhesive lens group to be emitted. The emitted laser is reflected by the surface of the target object and then received by the laser receiver, and a photoelectric signal is generated for ranging. The field angle of the double-cemented lens group of the laser ranging telescope is 7-8 degrees, the field range is enlarged, and the double-cemented lens group and the eyepiece group both adopt the simplest optical structures, so that the laser ranging telescope is simple in structure, and the size of the laser ranging telescope is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a laser speed measuring telescope according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a laser speed measuring telescope according to another embodiment of the present application.

Description of the main element reference numerals

10. A double-polymer lens group; 20. an eyepiece group; 30. a steering prism set; 31. a half pentagonal prism; 32. a wedge-shaped prism; 33. a roof prism; 40. a display element; 50. a laser transmitter; 60. a laser receiver; 70. a collimating lens; 80. a receiving mirror; 90. a processor.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first acquisition module may be referred to as a second acquisition module, and similarly, a second acquisition module may be referred to as a first acquisition module, without departing from the scope of the present application. The first acquisition module and the second acquisition module are both acquisition modules, but are not the same acquisition module.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the present application provides a laser range finder telescope. The laser range finder telescope comprises a double-composition lens group 10, an eyepiece group 20, a steering prism group 30, a display element 40, a laser transmitter 50 and a laser receiver 60. The field angle of the double-cemented lens assembly 10 is 7 ° to 8 °. The eyepiece group 20 is disposed opposite to the double-cemented lens group 10. The steering prism assembly 30 is disposed between the double-composition lens assembly 10 and the eyepiece lens assembly 20. The display element 40 is disposed between the steering prism set 30 and the eyepiece set 20, and is located on a first optical axis with the double-lens compound set 10, the eyepiece set 20, and the steering prism set 30. The laser beam emitted from the laser emitter 50 passes through the turning prism group 30 to perform light turning, and then irradiates a target object through the double-cemented lens group 10 to form a reflected laser. The laser receiver 60 is configured to receive the reflected laser light.

The laser ranging telescope comprises a telescopic optical system, a laser transmitting system and a laser receiving system. The double combination lens group 10, the eyepiece group 20, the turning prism group 30, and the display element 40 form a telescopic optical system. Meanwhile, the double-lens assembly 10 and the steering prism assembly 30 are part of a laser emission system. The laser emission system further comprises a collimating lens group 70 and a laser emitter 50. The laser receiving system comprises a laser receiver 60. Wherein, optionally, the telescopic optical system and the laser emission system are provided to a first barrel (not shown in the figure). The laser receiving system is disposed on the second lens barrel (not shown in the figure). The first lens barrel and the second lens barrel are rotatably connected, and optionally, the first lens barrel and the second lens barrel are hinged.

In order to reduce the volume of the laser range telescope and facilitate carrying and installation, the double-cemented objective comprises a positive lens and a negative lens. The two lenses are cemented to form the double cemented objective lens. The curvature radius of two lenses in the double-cemented lens group 10 is optimized through optical software, so that the field angle of the objective lens is increased from the original 6 degrees to 7.5 degrees, and the field range is expanded to be close to the limit field range of the structure. In this case, the first multilayer antireflection film layer may be disposed on the double composition lens group 10. The double-adhesive lens group 10 increases the field angle of the telescope objective lens from the original 6 degrees to a 7.5-degree large-field observation range, and the first multilayer antireflection film layer is arranged on the lens, so that the image quality in the field of view still keeps high definition and high brightness level.

It is understood that the first multilayer antireflective film layer may be provided on all mirror surfaces of the double composition lens group 10. The first antireflection film layer may also be disposed only on a part of the mirror surface of the double lens assembly 10, as long as stray light interference can be reduced.

To further reduce the size of the laser range telescope for easy carrying and installation, in one alternative embodiment, the eyepiece set 20 is a Kernel eyepiece. The Kennell eyepiece comprises a single lens and a double cemented lens. The double-cemented lens group 10 and the eyepiece group 20 both adopt the simplest optical structure, and the total optical length of the telescopic system is shortened through optical optimization, so that the purposes of compact structure and small volume are achieved. In one optional embodiment, the distance from the first side of the double composition lens group 10 to the second side of the ocular lens group 20 is 88 mm. The total length of the light path is shortened on the premise of ensuring the quality of a telescopic image by optimizing the distance between the optical lens groups through optical software. The total distance from the vertex of the first surface of the first lens of the double-cemented lens group 10 to the vertex of the second surface of the last lens of the ocular lens group 20 is 88mm, which is shortened by about 25mm compared with the existing common optical path structure in the market. The light path structure is compact.

In one embodiment, a second multilayer antireflection film layer is disposed on the ocular lens assembly 20. It is to be understood that the second antireflection film layer may be provided on all the mirror surfaces of the eyepiece group 20. The second antireflection film layer may also be provided only on a part of the mirror surfaces of the eyepiece group 20 as long as stray light interference can be reduced.

In one embodiment, the laser range telescope further comprises a collimating lens 70. The collimating lens 70 is disposed between the steering prism assembly 30 and the laser transmitter 50.

The laser emitter 50 emits a laser beam, which is collimated by the collimating lens 70 for the first time, enters the half-pentagonal prism 31 through the wedge-shaped prism 32 to be subjected to light ray turning, and is collimated by the double-cemented lens group 10 for the second time to be emitted. The optical axis of the laser emission system and the optical axis of the telescopic relation system form a certain included angle which can be controlled by the wedge angle of the wedge prism. The emitted laser light is reflected by the target object surface and received by the laser receiver 60, producing a photoelectric signal for ranging. The optical axis of the receiving system is parallel to the optical axis of the telescope system.

It should be understood that the structure of the turning prism assembly 30 is not particularly limited as long as the light turning can be realized, so that the laser beam emitted by the laser transmitter 50 can form reflected laser light after being first collimated by the collimating lens assembly 70, then being turned by the turning prism assembly 30, and then being irradiated on the target object by the double-prism assembly 10. And the scene light can be converged on the display element 40 to form a real image by sequentially passing through the double-lens assembly 10 and the turning prism assembly 30.

It is to be understood that the structure of the display element 40 is not particularly limited as long as display imaging can be achieved. In one optional embodiment, the display element 40 is a liquid crystal display. The LCD screen with the transmittance of more than 90 percent is used, and the light transmittance of the telescopic system is obviously improved. The whole transmittance of the telescopic system of the embodiment is improved by 55 percent compared with the prior product, and the observation picture is clear and bright.

In this case, the scene light of the target object sequentially passes through the double-lens assembly 10 and the turning prism assembly 30 to be converged on the display element 40 to form a real image, and then is magnified by the eyepiece assembly 20 to enter the eyes of the observer to form a visual image of the target object. The laser emitter 50 emits a laser beam, which is collimated by the collimating lens assembly 70 for the first time, then passes through the turning prism assembly 30 to turn the light, and is collimated by the double-lens assembly 10 for the second time, and then is emitted. The emitted laser light is reflected by the target object surface and received by the laser receiver 60, producing a photoelectric signal for ranging. The double-cemented lens group 10 of the laser ranging telescope has a viewing angle of 7-8 degrees, the viewing range is expanded, and the double-cemented lens group 10 and the eyepiece group 20 both adopt the simplest optical structures, so that the laser ranging telescope has a simple structure, and the volume of the laser ranging telescope is reduced.

Referring to fig. 2, in one embodiment, the turning prism set 30 includes a half pentagonal prism 31, a wedge prism 32 and a roof prism 33.

The half pentagonal prism 31 is disposed between the double lens assembly 10 and the display element 40. The wedge prism 32 is disposed between the half pentagonal prism 31 and the laser emitter 50. The roof prism 33 is disposed between the half pentagonal prism 31 and the display element 40.

The scene light of the target object sequentially passes through the double-cemented lens assembly 10, the semi-pentagonal prism 31 and the roof prism 33 to be converged on the display element 40 to form a real image, and then enters the eyes of an observer through the ocular lens assembly 20 to form a visual image of the target object. The double-cemented lens group 10, the semi-pentagonal prism 31, the roof prism 33, the display element 40, the eyepiece group 20 and the eyes are positioned on the same horizontal optical axis to form a telescopic system.

The laser emitter 50 emits a laser beam, which is collimated by the collimating lens group 70 for the first time, enters the half-pentagonal prism 31 through the wedge prism 32 to be subjected to light ray turning, and is collimated by the double-cemented lens group 10 for the second time and then is emitted. The optical axis of the laser emission system and the optical axis of the telescopic relation system form a certain included angle which can be controlled by the wedge angle of the wedge prism. The emitted laser light is reflected by the target object surface and received by the laser receiver 60, producing a photoelectric signal for ranging. The optical axis of the receiving system is parallel to the optical axis of the telescope system. The steering prism group 30 adopts a roof prism 33 structure, has small volume and is convenient for further reducing the volume of the laser ranging telescope.

In one embodiment, the laser range telescope further comprises a receiving mirror 80. The receiving mirror 80 is disposed between the target object and the laser receiver 60.

The emitted laser light is reflected by the surface of the target object, enters the receiving mirror 80 and then is converged on the laser receiver 60, and the laser receiver 60 generates a photoelectric signal for ranging. The optical axis of the receiving system is parallel to the optical axis of the telescope system. In one optional embodiment, the receiving mirror 80 is an aspheric single lens, and the focal length of the receiving mirror 80 is less than 32 mm. The light path structure is simple. The whole volume is small, the practicability is good and the carrying is convenient.

In one embodiment, the laser range telescope further comprises a processor 90. The processor 90 is connected to the laser transmitter 50 and the laser receiver 60, respectively, and configured to obtain a distance value between a laser emitting point and a laser reflecting point, and is further connected to the display element 40, and configured to send the distance value to the display element 40.

It is understood that the structure of the processor 90 is not particularly limited as long as it can obtain the distance value between the laser emitting point and the laser reflecting point and transmit the distance value to the display element 40. In an alternative embodiment, the processor 90 is a single chip or microprocessor 90.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A laser ranging telescope, comprising:

the double-polymer lens group has a field angle of 7-8 degrees;

the eyepiece group is arranged opposite to the double-composition lens group;

a laser receiver to receive the reflected laser light.

2. The laser range telescope of claim 1, wherein the distance from the first face of the double cement lens set to the second face of the eyepiece lens set is 88 mm.

3. The laser range telescope of claim 1, wherein the steering prism assembly comprises:

4. The laser range telescope of claim 3, further comprising:

5. The laser range telescope of claim 1, further comprising:

6. The laser range telescope of claim 1, further comprising:

7. The laser range telescope of claim 6, wherein the receiving mirror is an aspheric single lens, and the focal length of the receiving mirror is less than 32 mm.

8. The laser range telescope of claim 6, wherein the receiver mirror and the laser receiver are positioned on a second optical axis, and the first optical axis is parallel to the second optical axis.

9. The laser range telescope of claim 1, wherein a first multilayer antireflection coating is disposed on the double composition lens set, and a second multilayer antireflection coating is disposed on the eyepiece lens set.

10. The laser range telescope of claim 1, further comprising: