Binoculars-type rangefinder

Abstract

Provided in the present invention is a binoculars-type rangefinder, comprising a first lens barrel, a second lens barrel, and a range finding device located between the first lens barrel and the second lens barrel, wherein an objective lens group, a prism group and an eyepiece group are sequentially arranged in each of the first lens barrel and the second lens barrel; the range finding device comprises a laser transmitter module and a laser receiver module; and the prism group is arranged corresponding to the laser transmitter module and the laser receiver module, such that the optical path of laser emitted from the laser transmitter module and the optical path of laser arriving at the laser receiver module are perpendicular to an observation light path. The binoculars-type rangefinder of the present invention is easy to focus and convenient to hold.

Description

Binocular rangefinder Technical Field

[0001] The present invention relates to the technical field of distance measuring devices, in particular to a binocular type rangefinder. Background Art

[0002] A rangefinder is an instrument that uses laser to accurately measure the distance to a target. When working, the rangefinder emits a very thin beam of laser toward the target. The laser beam reflected by the target is received by a photoelectric element, and a timer measures the time from the emission to the reception of the laser beam, thereby calculating the distance from the observer to the target.

[0003] Binocular rangefinders are high-end rangefinders, designed to combine the observation capabilities of binoculars with the measurement capabilities of a rangefinder. Instead of carrying both binoculars and a rangefinder, binocular rangefinders offer greater convenience and are widely used in a variety of applications, including outdoor sports, security, and firefighting. Technical issues

[0004] However, in the development history of binocular rangefinders, there have been some unreasonable designs. For example, the laser transmitter is placed at the center axis of the binocular rangefinder, which results in additional optical components and structural parts, thereby increasing the cost. The additional set of optical components exposed to the air increases the maintenance workload. In addition, the optical path design cannot fully avoid the space between the left and right lens barrels, making it difficult for the structural design to achieve a full-enclosed grip to increase the stability of observation and measurement during use. Technical Solutions

[0005] Based on this, it is necessary to propose a binocular type rangefinder that is easy to focus and convenient to hold.

[0006] The present invention provides a binocular-type rangefinder, comprising a first lens barrel, a second lens barrel, and a rangefinder located between the first lens barrel and the second lens barrel. An objective lens group, a prism group, and an eyepiece group are sequentially arranged in the first lens barrel and the second lens barrel. The rangefinder comprises a laser emitting module and a laser receiving module. The prism group is arranged corresponding to the laser emitting module and the laser receiving module, so that the optical path of the laser emitted from the laser emitting module and the optical path of the laser reaching the laser receiving module are perpendicular to the observation optical path.

[0007] Preferably, the prism group includes a first prism group arranged in the first lens barrel and a second prism group arranged in the second lens barrel, the first prism group includes a first prism and a second prism, the second prism group includes a third prism and a fourth prism, the incident surface of the first prism is perpendicular to the optical path of the laser emitted from the laser emitting module, the exit surface of the second prism is parallel to the optical path of the laser emitted from the laser emitting module, the incident surface of the third prism is parallel to the optical path of the laser reaching the laser receiving module, and the exit surface of the fourth prism is perpendicular to the optical path of the laser reaching the laser receiving module.

[0008] Preferably, the first prism and the fourth prism are half pentaprisms, and the second prism and the third prism are roof prisms.

[0009] Preferably, the first lens barrel includes a first shell, the second lens barrel includes a second shell, the first shell and the second shell form a distance measuring device receiving compartment near the eyepiece group, and the distance measuring device is received in the distance measuring device receiving compartment.

[0010] Preferably, the binocular-type rangefinder further comprises a connecting member disposed between the first shell and the second shell, the connecting member being close to the objective lens group, and a gap being provided between the connecting member and the distance measuring device receiving chamber.

[0011] Preferably, the distance measuring device further comprises a battery, and the battery is housed in an end of the distance measuring device housing compartment close to the eyepiece assembly.

[0012] Preferably, the binocular-type rangefinder further includes a central axis focusing wheel arranged outside the rangefinder receiving compartment.

[0013] Preferably, the binocular-type rangefinder adjusts the parallax of the left and right eyes by adjusting the eyepiece group.

[0014] Preferably, the binocular-type rangefinder further includes control buttons arranged on the upper surface of the rangefinder receiving compartment. Beneficial effects

[0015] The binocular rangefinder provided by the present invention includes a first lens barrel, a second lens barrel, and a rangefinder device located between the first and second lens barrels. An objective lens assembly, a prism assembly, and an eyepiece assembly are sequentially disposed within the first and second lens barrels. The rangefinder device includes a laser emitting module and a laser receiving module. The prism assembly is disposed corresponding to the laser emitting module and the laser receiving module, such that the optical paths of the laser light emitted from the laser emitting module and the laser light reaching the laser receiving module are perpendicular to the observation optical path. The binocular rangefinder provided by the present invention is easy to focus and convenient to hold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] FIG1 is a schematic diagram of a binocular-type rangefinder provided by one embodiment;

[0018] FIG2 is a schematic diagram of a binocular-type rangefinder provided by one embodiment;

[0019] FIG3 is a cross-sectional view of a binocular-type rangefinder provided by one embodiment; and

[0020] FIG4 is a light path diagram of a binocular-type rangefinder provided by one embodiment. Best Mode for Carrying Out the Invention

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not intended to indicate or imply relative importance.

[0023] As shown in Figures 1 to 4, the present invention provides a binocular rangefinder, comprising a first lens barrel 100, a second lens barrel 200, and a rangefinder device 300 located between the first lens barrel 100 and the second lens barrel 200. An objective lens group (1A and 1B), a prism group (3A and 3B), and an eyepiece group (4A and 4B) are sequentially disposed in the first lens barrel 100 and the second lens barrel 200. The rangefinder device 300 comprises a laser emitting module 5 and a laser receiving module 6. The prism groups 3A and 3B are disposed corresponding to the laser emitting module 5 and the laser receiving module 6, respectively, so that the optical path of the laser light emitted from the laser emitting module 5 and the optical path of the laser light reaching the laser receiving module 6 are perpendicular to the observation optical path.

[0024] Specifically, the prism group includes a first prism group 3A arranged in the first lens barrel 100 and a second prism group 3B arranged in the second lens barrel 200, the first prism group 3A includes a first prism 31 and a second prism 32, the second prism group 3B includes a third prism 33 and a fourth prism 34, the incident surface of the first prism 31 is perpendicular to the optical path of the laser emitted from the laser emitting module 5, the exit surface of the second prism 32 is parallel to the optical path of the laser emitted from the laser emitting module 5, the incident surface of the third prism 33 is parallel to the optical path of the laser reaching the laser receiving module 6, and the exit surface of the fourth prism 34 is perpendicular to the optical path of the laser reaching the laser receiving module 6.

[0025] Preferably, the first prism 31 and the fourth prism 34 are half pentaprisms, and the second prism 32 and the third prism 33 are roof prisms. By using the "roof prism" and "half pentaprism" commonly used in conventional optical telescopes, plus the special-shaped prism 35 and the prism combination composed of the coating, production costs can be reduced.

[0026] Preferably, the first lens barrel 100 includes a first housing 101, and the second lens barrel 200 includes a second housing 201. The first housing 101 and the second housing 201 form a distance measuring device storage compartment 301 near the eyepiece assemblies 4A and 4B, and the distance measuring device 300 is stored in the distance measuring device storage compartment 301. The laser emitting and laser receiving components are built into the left and right lens barrels, reducing the maintenance and exposure of the laser emitting or laser receiving optical components to the outside air. In addition, the optical path design and structural design of the prism assembly of the present invention fully avoid the space in the middle portion of the left and right lens barrels to achieve a structurally all-encompassing grip effect, improving the user experience and increasing the stability of the grip during use, as well as the stability of observation and measurement.

[0027] Preferably, the binocular-type rangefinder further includes a connector 9 disposed between the first housing 101 and the second housing 201. The connector 9 is located adjacent to the objective lens assembly 1 and spaced apart from the rangefinder housing 301. This free space between the left and right binoculars of the binocular-type rangefinder allows for a convenient hollow grip design. This hollow grip allows for fully encompassing both binoculars, ensuring more stable measurement and observation. Furthermore, the connector 9 enhances the firmness and stability of the binoculars.

[0028] The design of the optical prism assembly of the present invention allows the "laser emission tube laser" and "the laser receiving optical path to be received" to be perpendicular to the observation optical path, thereby avoiding the space between the left and right binoculars of the binocular-type rangefinder body. The avoided space in the binoculars makes it very convenient to achieve a hollow grip structure effect in the structural design. The hollow grip allows both hands to fully grasp the left and right lens barrels respectively, thereby increasing the effect of more stable measurement and observation when using the machine. Modes for Carrying Out the Invention

[0029] During the assembly and debugging process of the binocular-type rangefinder of the present invention, after the structural components (14A and 14B) for fixing the objective lens 1, the structural components (15A and 15B) for fixing the field lens 2, and the structural components (16A and 16B) for fixing the prism group 3 are debugged respectively, the objective lens 1, the field lens 2, and the prism group 3 are fixed, so that the laser emitting module 5 and the laser receiving module 6 respectively achieve optimal measurement capabilities and the observation optical paths of the left and right lens barrels are corrected.

[0030] By connecting the transmissive liquid crystal 10 to the circuit boards 11 and 12 and installing it in one of the lens barrels between the prism group 3 and the eyepiece 4 and at the focal plane of the eyepiece 4, it is possible to observe the target through the eyepiece and directly read the measurement results.

[0031] By rotating the connecting member 9 as the central axis, the distance between the left and right lens barrels can be adjusted to suit the distance between the eyes of different people.

[0032] Preferably, the rangefinder device further includes a battery 8, which is housed in the rangefinder housing 301 at one end near the eyepiece assembly 4. The battery is structurally designed to be directly built into the rangefinder housing 301 at the central axis, thereby reducing the size of the lens and ensuring that the diameters of the left and right lens barrels remain within a range that is comfortable for human hands to grasp.

[0033] Preferably, the binocular-type rangefinder further includes a central focusing wheel 7 disposed outside the rangefinder housing 301. This wheel adjusts the clarity of the optical path observation system of the left and right lens barrels when observing objects at different distances. Central focusing brackets 17 and 18 cooperate with each other, so that when the central focusing wheel 7 is adjusted, the eyepiece assemblies 4A and 4B move together to adjust the focal length.

[0034] The structural design adopts a method that can make the binocular eyepiece group 4 move axially synchronously to focus, that is, the clarity of far and near, and can adjust the focal length of one of the monoculars separately to achieve the effect of adjusting the diopter difference of the left and right eyes of the human eye. This method of focusing and adjusting the diopter difference is convenient for the debugging and installation of the laser transmitting module 5 and the laser receiving module 6, and after the debugging of the transmitting and receiving optical and laser modules, there is no need to use the objective lens 1 and the field lens 2 to focus, and there is no need to destroy the position of the transmitting and receiving optical and laser modules that have been debugged to the best effect.

[0035] Preferably, the binocular-type rangefinder further includes a control button 13 disposed on the upper surface of the rangefinder housing. By operating the control button 13, the distance is measured, and the measurement result is simultaneously displayed within the field of view of the eyepiece 4. The user can measure while observing and read the measurement result directly in the eyepiece. The user can also adjust the clarity by adjusting the central axis focus and adjust the diopter difference caused by the different vision of the left and right eyes using the diopter wheel 19.

[0036] The binocular rangefinder provided by the present invention includes a first lens barrel, a second lens barrel, and a rangefinder device located between the first and second lens barrels. An objective lens assembly, a prism assembly, and an eyepiece assembly are sequentially disposed within the first and second lens barrels. The rangefinder device includes a laser emitting module and a laser receiving module. The prism assembly is disposed corresponding to the laser emitting module and the laser receiving module, such that the optical paths of the laser light emitted from the laser emitting module and the laser light reaching the laser receiving module are perpendicular to the observation optical path. The binocular rangefinder provided by the present invention is easy to focus and convenient to hold.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A binocular telescope rangefinder, comprising a first lens barrel (100), a second lens barrel (200), and a distance measuring device (300) located between the first lens barrel (100) and the second lens barrel (200), characterized in that: An objective lens group (1), a prism group (3) and an eyepiece group (4) are sequentially arranged in the first lens barrel (100) and the second lens barrel (200); the distance measuring device comprises a laser emitting module (5) and a laser receiving module (6); the prism group (3) is arranged corresponding to the laser emitting module (5) and the laser receiving module (6), so that the optical path of the laser emitted from the laser emitting module (5) and the optical path of the laser reaching the laser receiving module (6) are perpendicular to the observation optical path.

2. The binocular-type rangefinder according to claim 1, characterized in that: The prism group (3) includes a first prism group (3A) arranged on the first lens barrel (100) and a second prism group (3B) arranged on the second lens barrel (200), the first prism group (3A) includes a first prism (31) and a second prism (32), the second prism group (3B) includes a third prism (33) and a fourth prism (34), the incident surface of the first prism (31) is perpendicular to the optical path of the laser emitted from the laser emission module (5), the exit surface of the second prism (32) is parallel to the optical path of the laser emitted from the laser emission module (5), the incident surface of the third prism (33) is parallel to the optical path of the laser reaching the laser receiving module (6), and the exit surface of the fourth prism (34) is perpendicular to the optical path of the laser reaching the laser receiving module (6).

3. The binocular-type rangefinder according to claim 2, wherein: The first prism and the fourth prism are half pentaprisms, and the second prism and the third prism are roof prisms.

4. The binocular-type rangefinder according to claim 1, wherein: The first lens barrel (100) comprises a first shell (101), the second lens barrel (200) comprises a second shell (201), the first shell (101) and the second shell (201) forming a distance measuring device receiving compartment (301) at a position close to the eyepiece assembly (4), and the distance measuring device (300) is received in the distance measuring device receiving compartment (301).

5. The binocular-type rangefinder according to claim 4, characterized in that: The binocular-type rangefinder further comprises a connecting member (9) arranged between the first shell (101) and the second shell (201), the connecting member (9) being close to the objective lens group (1), and a gap being provided between the connecting member (9) and the distance measuring device receiving chamber (301).

6. The binocular-type rangefinder according to claim 4, characterized in that: The distance measuring device further comprises a battery (8), and the battery (8) is accommodated in an end of the distance measuring device accommodation compartment (301) close to the eyepiece assembly (4).

7. The binocular-type rangefinder according to claim 4, characterized in that: The binocular-type rangefinder further comprises a central axis focusing wheel (7) arranged outside the rangefinder receiving compartment (301).

8. The binocular-type rangefinder according to claim 1, wherein: The binocular-type rangefinder adjusts the parallax of the left and right eyes by adjusting the eyepiece group (4).

9. The binocular-type rangefinder according to claim 4, characterized in that: The binocular-type rangefinder further comprises a control button (13) arranged on the upper surface of the rangefinder receiving compartment (301).

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