An erect image system and a laser rangefinder binocular telescope

Abstract

The present invention discloses an erect image system and a laser rangefinder binocular telescope, relating to the field of binocular telescopes. The erect image system includes: a left erect image system and a right erect image system; both the left erect image system and the right erect image system include a roof prism and a cemented prism; the cemented prism is formed by cementing a half pentaprism and a small half pentaprism; a beam splitting coating is provided on the cementing surface of the half pentaprism and the small half pentaprism. The present invention not only has a simple structure and small occupied volume, but also is convenient to use, can realize binocular observation and aiming at the object to be measured, and can display the distance of the object to be measured in real time in the field of view while observing the object.

Description

Technical Field

[0001] The present invention relates to the technical field of binoculars, and particularly to an erect image system and a laser rangefinder binoculars. Background Art

[0002] Binoculars have already been a common consumer product, and binoculars with laser rangefinding function are also common functional products on the market. However, the laser rangefinder binoculars on the market have the problem of large volume. It is desired to design a laser rangefinder binoculars with a relatively short overall length under the condition of unchanged magnification. Summary of the Invention

[0003] The purpose of the present invention is to provide an erect image system and a laser rangefinder binoculars to solve the problem of large volume of the existing laser rangefinder binoculars.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] An erect image system includes: a left erect image system and a right erect image system; both the left erect image system and the right erect image system include a roof prism and a cemented prism; the cemented prism is formed by gluing a half pentaprism and a small half pentaprism; a beam splitting coating is provided on the gluing surface of the half pentaprism and the small half pentaprism.

[0006] The roof prism includes: a roof transceiver surface, a first roof reflection surface and a second roof reflection surface, both ends of the roof transceiver surface are respectively connected to one end of the first roof reflection surface and one end of the second roof reflection surface, and the other end of the first roof reflection surface is connected to the other end of the second roof reflection surface.

[0007] The cemented prism is arranged on the reflection light path of the roof transceiver surface; the incident light enters the roof prism through the roof transceiver surface, then successively passes through the reflections of the first roof reflection surface, the second roof reflection surface and the roof transceiver surface and enters the half pentaprism, and then passes through the reflection of the half pentaprism and enters the small half pentaprism and is transmitted and output.

[0008] Optionally, the small half pentaprism includes: a first surface, a second surface and a third surface; both ends of the first surface are respectively connected to one end of the second surface and one end of the third surface, and the other end of the second surface is connected to the other end of the third surface; the half pentaprism is glued to the first surface of the small half pentaprism.

[0009] Optionally, the cemented prism in the left erect image system further includes: a small cemented prism; the small cemented prism is glued to the third surface of the small half pentaprism.

[0010] Optionally, the half pentaprism is used to deflect the light by 66°.

[0011] Optionally, the small half pentaprism is used to deflect light by 28°.

[0012] The present invention also provides a laser rangefinder binocular telescope, comprising: a left telescope, a right telescope, and the above-mentioned left erecting system and right erecting system; the left telescope and the right telescope have the same structure, and the left telescope and the right telescope both include an objective lens group, a single lens, and an eyepiece group; the left telescope is further provided with a photodetector and a display screen, and the right telescope is further provided with a laser emitter;

[0013] The reflected light path of the target object received by the objective lens group in the left telescope passes through the left erecting system and the single lens in the left telescope and is output to the eyepiece group in the left telescope;

[0014] The laser emitted by the laser emitter passes through the right erecting system and the objective lens group of the right telescope and then shoots towards the target object;

[0015] The laser light path reflected by the target object received by the objective lens group in the left telescope passes through the left erecting system and enters the photodetector;

[0016] The light path of the display screen passes through the left erecting system and the single lens in the left telescope and is output to the eyepiece group in the left telescope.

[0017] Optionally, the objective lens group includes an objective single lens, an objective cemented lens, and an objective compensating lens arranged in sequence from bottom to top.

[0018] Optionally, the eyepiece group includes a first eyepiece cemented lens, an eyepiece single lens, and a second eyepiece cemented lens arranged in sequence from top to bottom.

[0019] Optionally, a field stop is further arranged between the single lens in the left telescope and the left erecting system.

[0020] Optionally, the left telescope further includes a reflector and a projection lens group; the reflector is arranged at the right angle of the display screen and the projection lens group, and the projection lens group is arranged between the left erecting system and the display screen.

[0021] According to the specific embodiments provided by the present invention, the following technical effects are disclosed by the present invention:

[0022] The erect image system provided by the present invention includes a roof prism and a cemented prism. Through the optimization of the optical path, the structure of the erect image system is simple, the occupied volume is small, and it is convenient to use. The laser rangefinder binocular telescope provided by the present invention arranges the laser emitting tube in the right telescope, and arranges the photodetector and the display screen in the left telescope, so that binocular observation and aiming of the object to be measured can be realized within the field of view, and the distance of the object to be measured can be displayed in real time within the field of view when observing the object. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Schematic diagram of the structure of the right erect image system provided in Embodiment 1 of the present invention;

[0025] Figure 2 Schematic diagram of the structure of the left erect image system provided in Embodiment 1 of the present invention;

[0026] Figure 3 Schematic diagram of the deflection of light by the half pentaprism provided in Embodiment 1 of the present invention;

[0027] Figure 4 Schematic diagram of the deflection of light by the small half pentaprism provided in Embodiment 1 of the present invention;

[0028] Figure 5 Schematic diagram of the structure of the laser rangefinder binocular telescope provided in Embodiment 2 of the present invention;

[0029] Figure 6 Schematic diagram of the positional relationship between the reflector and the projection lens group provided in Embodiment 2 of the present invention;

[0030] Figure 7 3D positional relationship schematic diagram of the reflector and the projection lens group provided in Embodiment 2 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] The object of the present invention is to provide an erecting system and a laser rangefinder binocular telescope with a simple structure and small occupied volume, which are used for binocular observation and aiming at a measured object within a field of view, and for real-time displaying the distance of the measured object within the field of view.

[0033] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Embodiment 1

[0035] Embodiment 1 of the present invention provides an erecting system, including: a left erecting system and a right erecting system. As Figure 1 shown, both the left erecting system and the right erecting system include a roof prism 2 and a cemented prism 3; the cemented prism 3 is composed of a half pentaprism 31 and a small half pentaprism 32 cemented together; a beam splitting coating is provided on the cementing surface 311 of the half pentaprism 31 and the small half pentaprism 32; the main function of the beam splitting coating is to split the beam.

[0036] As Figure 1 shown, the roof prism 2 includes: a roof transceiver surface 21, a first roof reflecting surface 22 and a second roof reflecting surface 23. Both ends of the roof transceiver surface 21 are respectively connected to one end of the first roof reflecting surface 22 and one end of the second roof reflecting surface 23, and the other end of the first roof reflecting surface 22 is connected to the other end of the second roof reflecting surface 23;

[0037] The cemented prism 3 is arranged on the reflection light path of the roof transceiver surface 21; the incident light enters the roof prism 2 from the roof transceiver surface 21, and then successively passes through the reflections of the first roof reflecting surface 22, the second roof reflecting surface 23 and the roof transceiver surface 21 and enters the half pentaprism 31, and then passes through the reflection of the half pentaprism and enters the small half pentaprism 32 and then transmits and outputs.

[0038] The small half pentaprism 32 includes: a first surface, a second surface and a third surface; both ends of the first surface are respectively connected to one end of the second surface and one end of the third surface, and the other end of the second surface is connected to the other end of the third surface; the half pentaprism 31 is cemented to the first surface of the small half pentaprism 32.

[0039] As Figure 2 shown, the cemented prism in the left erecting system further includes: a small cemented prism 33; the small cemented prism 33 is cemented to the third surface of the small half pentaprism 32.

[0040] As Figure 3 shown, the feature of the half pentaprism 31 is to deflect the light by 66°, realizing the folding of the light, reducing the space length, and thus reducing the volume of the erecting system.

[0041] As Figure 4As shown, the small half pentaprism 32 is characterized by deflecting light by 28°, achieving the deflection of light.

[0042] Embodiment 2

[0043] As Figure 5 As shown, Embodiment 2 of the present invention provides a laser rangefinder binocular telescope, including: a left telescope, a right telescope, and the left erecting system and the right erecting system in Embodiment 1. The left telescope and the right telescope have the same structure. The left telescope and the right telescope both include an objective lens group 1, a single lens 4, and an eyepiece group 6; the left telescope is further provided with a photodetector 10 and a display screen 9, and the right telescope is further provided with a laser emitter 11.

[0044] The reflected light path of the target object received by the objective lens group 1 in the left telescope passes through the left erecting system and the single lens 4 in the left telescope and is output to the eyepiece group 6 in the left telescope.

[0045] The light path received by the objective lens group 1 enters the roof half pentaprism 2 through the roof transceiver surface 21 of the roof prism 2, and then enters the half pentaprism 31 after being reflected by the first roof reflecting surface 22, the second roof reflecting surface 23, and the roof transceiver surface 21 in sequence. After being reflected by the half pentaprism 31, it vertically passes through the single lens 4 and enters the eyepiece group 6, so that binocular observation and aiming at the target object can be realized.

[0046] The receiving light path shares the objective lens group 1, the roof prism 2, and the half pentaprism 31. The receiving light path exits from the cemented surface 311 of the half pentaprism 31. The typical characteristic of this cemented surface 311 is high transmittance in the visible light wavelength region and high reflectance in the wavelength range corresponding to the laser emitter.

[0047] The laser emitted by the laser emitter 11 passes through the right erecting system and the objective lens group 1 of the right telescope and then shoots at the target object. The emitting light path shares the objective lens group 1, the roof prism 2, and the half pentaprism 31, and the emitting light path exits from the cemented surface 311 of the half pentaprism 31.

[0048] The laser light path reflected by the target object received by the objective lens group 1 in the left telescope passes through the left erecting system and enters the photodetector 10; the photodetector 10 is located at the focal plane of the objective lens group 1.

[0049] The laser emitted by the laser emitter 11 is refracted by the semi-pentaprism 31 and the roof prism 2 of the right erecting system and then enters the objective lens group 1. Finally, the laser passes through the objective lens group 1 and hits the target object. The reflection of the laser by the target object enters the objective lens group 1 of the left telescope, and then passes through the roof prism 2 and the semi-pentaprism 31 of the left erecting system and enters the photodetector 10 to realize the reception signal of the laser. The photodetector 10 processes the photoelectric signal, calculates the distance of the target object according to the time difference between the emitted laser and the received optical signal, and displays the distance on the display screen 9, thereby realizing the accurate measurement of the distance of the target object.

[0050] The optical path of the display screen 9 passes through the single lens 4 in the left erecting system and the left telescope and is output to the eyepiece group 6 in the left telescope.

[0051] Further, the objective lens group 1 includes an objective single lens, an objective cemented lens, and an objective compensating lens arranged in sequence from bottom to top. The eyepiece group 6 includes a first eyepiece cemented lens, an eyepiece single lens, and a second eyepiece cemented lens arranged in sequence from top to bottom.

[0052] Further, a field stop 5 is also arranged between the single lens 4 in the left telescope and the middle of the left erecting system.

[0053] The light reflected by the natural light irradiated on the target object enters the left erecting system through the objective lens group 1. After being refracted by the left erecting system, the image is finally presented at the field stop 5; the image plane presented by the target object field stop becomes the object plane of the eyepiece group 6, and the image plane presented by the refraction of the eyepiece group 6 enters the human eye.

[0054] Further, as Figure 5 and Figure 6 shown, the left telescope further includes a reflector 8 and a projection lens group 7; as Figure 7 shown, the reflector 8 is arranged at the right angle of the display screen 9 and the projection lens group 7, and the projection lens group 7 is arranged between the left erecting system and the display screen 9.

[0055] The distance information of the target object is given by the display on the display screen 9. The information pattern on the display screen 9 is projected to the vicinity of the field stop 5 through the reflector 8, the projection lens group 7, and the small cemented prism 33. In this way, the human eye can directly observe the information pattern on the projected display screen 9 on the eyepiece group 6, realizing the real-time observation and distance measurement of distant objects.

[0056] The display screen 9 preferably uses a light-emitting display screen with a designed pattern displayed thereon. The pattern content includes the distance displayed for distance measurement and patterns such as auxiliary aiming crosses or circles.

[0057] The projection lens group 7 is composed of a single lens and a cemented lens, and its function is to project the display content of the display screen 9.

[0058] The erect image system and the laser rangefinder binocular telescope provided in the first embodiment and the second embodiment of the present invention not only have a simple structure and a small occupied volume, but also are convenient to use, can realize binocular observation and aiming at the object to be measured, and can display the distance of the object to be measured in real time in the viewing field when observing the object.

[0059] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is the difference from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0060] In this article, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An erect image system, characterized in that, Comprising: A left erecting system and a right erecting system; both the left erecting system and the right erecting system include a roof prism and a cemented prism; The cemented prism is formed by gluing a semi-pentaprism and a small semi-pentaprism; a beam-splitting coating is provided on the gluing surface of the semi-pentaprism and the small semi-pentaprism; The roof prism includes: a roof transceiver surface, a first roof reflecting surface and a second roof reflecting surface. Two ends of the roof transceiver surface are respectively connected to one end of the first roof reflecting surface and one end of the second roof reflecting surface, and the other ends of the first roof reflecting surface and the second roof reflecting surface are connected; The cemented prism is arranged on the reflection optical path of the roof transceiver surface; incident light enters the roof prism through the roof transceiver surface, then successively passes through the reflections of the first roof reflecting surface, the second roof reflecting surface and the roof transceiver surface and enters the semi-pentaprism, and then passes through the reflection of the semi-pentaprism and enters the small semi-pentaprism and is transmitted and output; The semi-pentaprism is used to deflect light by 66°; The small semi-pentaprism is used to deflect light by 28°.

2. The erect image system according to claim 1, characterized in that, The small semi-pentaprism includes: a first surface, a second surface and a third surface; two ends of the first surface are respectively connected to one end of the second surface and one end of the third surface, and the other ends of the second surface and the third surface are connected; the semi-pentaprism is glued to the first surface of the small semi-pentaprism.

3. The erect image system according to claim 2, wherein The cemented prism in the left erecting system further includes: a small cemented prism; the small cemented prism is glued to the third surface of the small semi-pentaprism.

4. A laser rangefinder binocular telescope, characterized in that, Comprising: A left telescope, a right telescope, and the left erecting system and the right erecting system according to any one of claims 1-3; the left telescope and the right telescope have the same structure, and both the left telescope and the right telescope include an objective lens group, a single lens and an eyepiece group; the left telescope is further provided with a photodetector and a display screen, and the right telescope is further provided with a laser emitter; The reflected light path of the target object received by the objective lens group in the left telescope passes through the left erecting system and the single lens in the left telescope and is output to the eyepiece group in the left telescope; The laser emitted by the laser emitter passes through the right erecting system and the objective lens group of the right telescope and then shoots at the target object; The laser light path reflected by the target object received by the objective lens group in the left telescope passes through the left erecting system and enters the photodetector; The light path of the display screen passes through the left erecting system and the single lens in the left telescope and is output to the eyepiece group in the left telescope.

5. The laser rangefinder binoculars according to claim 4, characterized in that, The objective lens group includes an objective single lens, an objective cemented lens and an objective compensating lens which are sequentially arranged from bottom to top.

6. The laser rangefinder binoculars according to claim 4, wherein The eyepiece group includes a first eyepiece cemented lens, an eyepiece single lens and a second eyepiece cemented lens which are sequentially arranged from top to bottom.

7. The laser rangefinder binoculars according to claim 4, characterized in that, A field stop is further arranged between the single lens in the left telescope and the left erecting system.

8. The laser rangefinder binoculars according to claim 4, characterized in that, The left telescope further includes a reflector and a projection lens group; the reflector is arranged at the right angle of the display screen and the projection lens group, and the projection lens group is arranged between the left erecting system and the display screen.

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