Ranging telescope

Abstract

The utility model provides a distance measuring telescope, comprising a distance measuring mechanism used for measuring the distance from a distant point to the distance measuring mechanism; the display is used for displaying the distance value; the lens assembly comprises an objective lens, an eyepiece and a lens group; the prism assembly comprises a first prism; light emitted by a display sequentially passes through the lens group, the first prism and the eyepiece to form a first light path; and reflected light of the object passes through the objective lens, the first prism and the eyepiece to form a second light path. Wherein the lens group adopts a plurality of lenses, so that an image of the display is adjusted into an image with a proper size, the display does not need to have a large display picture, and the display can be realized by using a common display module. Finally, the production cost of the distance measuring telescope is reduced.

Description

Technical Field

[0001] The utility model relates to the field of distance measurement, in particular to a distance measuring telescope. Background Art

[0002] A telescope is an optical instrument that uses lenses or reflectors and other optical devices to observe distant objects. It uses the refraction of light through the lens or the reflection of light by a concave mirror to enter a small hole and converge into an image, and then pass through a magnifying eyepiece to be seen. It is also called a "telescope". Existing telescopes are usually equipped with a rangefinder, so that the distance can be measured while looking far away. However, the display module of existing telescopes that can display distance is generally large in order to be displayed on the eyepiece, which makes the cost of telescopes with distance display very high. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a ranging telescope to reduce the production cost of the ranging telescope.

[0004] To this end, an embodiment provides a ranging telescope, comprising:

[0005] A distance measuring mechanism, used to measure the distance from a distant point to the distance measuring mechanism;

[0006] A display, used to display the distance value;

[0007] lens assembly, including objective lens, eyepiece lens and lens group; and

[0008] A prism assembly including a first prism;

[0009] The light emitted by the display sequentially passes through the lens group, the first prism and the eyepiece to form a first optical path;

[0010] The object reflection forms a second optical path via the objective lens, the first prism and the eyepiece.

[0011] As a further optional solution of the ranging telescope, the lens group includes a first lens and a second lens, the first lens is used to magnify the light emitted by the display, and the second lens is used to reduce the light emitted by the display.

[0012] As a further optional solution of the ranging telescope, the number of the first lenses is not less than two.

[0013] As a further optional solution of the rangefinder telescope, the prism assembly also includes a second prism, which is arranged on the first optical path and located between the objective lens and the first prism, and the second prism is a Schmidt-Behan prism.

[0014] As a further optional solution for the ranging telescope, the channel opening from the second prism to the objective lens gradually becomes larger.

[0015] As a further optional solution for the rangefinder telescope, the first prism includes a first prism and a second prism, the first prism and the second prism are combined to form a quadrangular prism, and the fitting surfaces of the first prism and the second prism face the eyepiece and the lens group.

[0016] As a further optional solution of the range-finding telescope, the fitting surface forms an angle of 45 degrees with the display surface of the display.

[0017] As a further optional solution of the range-finding telescope, the fitting surface forms an angle of 45 degrees with the axis of the objective lens.

[0018] As a further optional solution of the ranging telescope, the ranging mechanism includes a transmitting end and a receiving end, the transmitting end is used to transmit infrared rays, and the receiving end is used to receive reflected infrared rays.

[0019] As a further optional solution of the ranging telescope, the lens assembly also includes a third lens, and the third transparent lens is arranged between the eyepiece and the lens group.

[0020] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0021] According to the range-finding telescope in the above embodiment, the second optical path plays a telescopic role, and the objective lens and the eyepiece are used to magnify the distant objects and form an image at the eyepiece end. The first optical path mainly plays the role of imaging the image emitted by the display at the eyepiece end. Since the first optical path and the second optical path both pass through the first prism, the second optical path and the first optical path overlap in the section from the first prism to the eyepiece, so that the user can see the ranging data and the distant objects at the same time. The lens group uses multiple lenses, so that the image of the display is adjusted to an image of a suitable size, which does not require the display to have a large display screen, and can be achieved with a general display module. Finally, the production cost of the range-finding telescope is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] in:

[0024] Figure 1 The overall structural diagram of the ranging telescope provided according to the embodiment of the utility model is shown;

[0025] Figure 2 A cross-sectional schematic diagram of a ranging telescope provided according to an embodiment of the utility model is shown;

[0026] Figure 3 A schematic structural diagram of a second prism provided according to an embodiment of the utility model is shown.

[0027] Description of main component symbols:

[0028] Distance measuring mechanism-10; display-20; objective lens-310; eyepiece-320; lens group-330; prism assembly-40; first prism-410; first optical path-100; second optical path-200; first lens-3310; second lens-3320; second prism-420; first triangular prism-4110; second triangular prism-4120; fitting surface-4130; transmitting end-110; receiving end-120; third lens-3330. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] In an embodiment of the utility model, a ranging telescope is provided, the ranging telescope comprising:

[0033] The distance measuring mechanism 10 is used to measure the distance from a distant point to the distance measuring mechanism 10;

[0034] Display 20, used to display distance values;

[0035] A lens assembly (not shown), including an objective lens 310, an eyepiece 320 and a lens group 330; and

[0036] The prism assembly 40 includes a first prism 410;

[0037] The light emitted by the display 20 passes through the lens group 330, the first prism 410 and the eyepiece 320 in sequence to form a first optical path 100;

[0038] The object reflection forms a second optical path 200 via the objective lens 310 , the first prism 410 and the eyepiece 320 .

[0039] According to the range-finding telescope in the above embodiment, the second optical path 200 plays a telescopic role, and the objective lens 310 and the eyepiece 320 are used to magnify the distant objects and image them at the end of the eyepiece 320. The first optical path 100 mainly plays the role of imaging the image emitted by the display 20 at the end of the eyepiece 320. Since the first optical path 100 and the second optical path 200 both pass through the first prism 410, the second optical path 200 and the first optical path 100 overlap in the section from the first prism 410 to the eyepiece 320, so that the user can see the distance measurement data and the distant objects at the same time. Among them, the lens group 330 uses multiple lenses, so that the image of the display 20 is adjusted to an image of a suitable size, which does not require the display to have a large display screen, and can be achieved with a general display module. Finally, the production cost of the range-finding telescope is reduced.

[0040] In some specific embodiments, the lens group 330 includes a first lens 3310 and a second lens 3320 , wherein the first lens 3310 is used to amplify the light emitted by the display 20 , and the second lens is used to reduce the light emitted by the display 20 .

[0041] The function of the first lens 3310 is to magnify the image, and the function of the second lens is to reduce the image. By controlling the focal length, spacing and other parameters of the first lens 3310 and the second lens 3320, the image displayed by the display 20 at the eyepiece 320 end can be precisely controlled.

[0042] Generally speaking, the display 20 not only displays the distance, but also displays a scale or other information.

[0043] In some specific embodiments, the number of first lenses 3310 is not less than two.

[0044] The first lens 3310 mainly plays the role of magnification. Since the first optical path 100 mainly plays the role of magnification, the eyepiece 320 end also plays the role of magnification. Therefore, it is necessary to synchronously magnify the image displayed by the display 20 so as to match the imaging of the distant object.

[0045] The first lens 3310 and the second lens 3320 are generally placed in a stacked manner, because the size of the aiming telescope is generally not very large, so it is convenient to carry around.

[0046] In some specific embodiments, the prism assembly 40 further includes a second prism 420 . The second prism 420 is disposed on the first optical path 100 and located between the objective lens 310 and the first prism 410 . The second prism 420 is a Schmidt-Behan prism.

[0047] Schmidt-Behan prism This prism group consists of two glass prisms separated by an air gap. Multiple total reflections cause the image to flip vertically, and the "roof" of the second prism flips the image sideways, resulting in a 180° rotation of the image. The handedness of the image does not change.

[0048] The second prism 420 is a Schmidt-Beehan prism because, on the one hand, the length of the second optical path 200 is extended under the objective condition that the length of the ranging telescope is limited, thereby enhancing the telescopic function of the ranging telescope. On the other hand, the image passing through the Schmidt-Beehan prism will rotate 180°. Usually, the distance between the objective lens 310 and the eyepiece 320 is much longer than one focal length of the objective lens 310, so the image seen by the observer is opposite. The two opposites cancel each other out, so that the image seen by the observer at the end of the eyepiece 320 is positive.

[0049] In some specific embodiments, the opening of the channel from the second prism 420 to the objective lens 310 gradually becomes larger.

[0050] The first function of the telescope is to magnify the angle of distant objects so that the human eye can see details with smaller angular distances. The second function of the telescope is to send the light beam collected by the objective lens 310, which is much thicker than the pupil diameter (maximum 8 mm), into the human eye so that the observer can see the dim objects that were originally invisible. Therefore, the focal length of the objective lens 310 is greater than the focal length of the eyepiece 320, which also leads to the diameter of the objective lens 310 being generally much larger than the diameter of the eyepiece 320.

[0051] In some specific embodiments, the first prism 410 includes a first triangular prism 4110 and a second triangular prism 4120 , the first triangular prism 4110 and the second triangular prism 4120 are combined to form a quadrangular prism, and the fitting surface 4130 of the first triangular prism 4110 and the second triangular prism 4120 faces the eyepiece 320 and the lens group 330 .

[0052] In this embodiment, the function of the first prism 410 is to redirect the first optical path 100 without changing the second optical path 200 so as to partially overlap with the second optical path 200. The specific principle is that when the light of the display 20 is irradiated on the bonding surface 4130, part of the light will be reflected because there is a certain angle between the light of the display 20 and the bonding surface 4130, thereby changing the direction of the light of the display 20. The light emitted by the distant object on the second optical path 200 can partially pass through the first prism 410.

[0053] In some specific embodiments, the fitting surface 4130 and the display surface of the display 20 form an angle of 45 degrees.

[0054] The 45-degree angle between the fitting surface 4130 and the display surface is to facilitate the installation and positioning of the first prism 410 and the display 20. Other angles can actually be achieved, but there may be a tilt error during installation.

[0055] In some specific embodiments, the fitting surface 4130 and the axis of the objective lens 310 form an angle of 45 degrees.

[0056] Similarly, the 45-degree angle between the fitting surface 4130 and the axis of the objective lens 310 is also to prevent installation errors and improve the yield rate of the product.

[0057] In some specific embodiments, the distance measuring mechanism 10 includes a transmitting end 110 and a receiving end 120 , wherein the transmitting end 110 is used to transmit infrared rays, and the receiving end 120 is used to receive reflected infrared rays.

[0058] There are many types of distance measuring mechanism 10, including ultrasonic distance measuring device, optical distance measuring device, infrared distance measuring device, etc. Among them, optical distance measuring device mainly obtains distance by trigonometric calculation. Infrared distance measuring device calculates by calculating the time difference between light emission and return.

[0059] In this embodiment, it is a kind of infrared rangefinder.

[0060] In some specific embodiments, the lens assembly (not shown) further includes a third lens 3330 , which is transparently disposed between the eyepiece 320 and the lens group 330 .

[0061] The function of the third lens 3330 is to further enhance the telescopic function of the telescope, and it is generally arranged close to the eyepiece 320.

[0062] Finally, it should be noted that the eyepiece 320 is generally adjusted along the length direction of the second optical path 200. Knob adjustment is usually adopted to realize telephoto functions of different magnifications.

[0063] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A ranging telescope, characterized in that: include: A distance measuring mechanism, used to measure the distance from a distant point to the distance measuring mechanism; A display, used to display the distance value; Lens assembly, including objective lens, eyepiece and lens group; as well as A prism assembly including a first prism; The light emitted by the display sequentially passes through the lens group, the first prism and the eyepiece to form a first optical path; The object reflection forms a second optical path via the objective lens, the first prism and the eyepiece.

2. The ranging telescope according to claim 1, characterized in that: The lens group includes a first lens and a second lens, wherein the first lens is used to magnify the light emitted by the display, and the second lens is used to reduce the light emitted by the display.

3. The ranging telescope according to claim 2, characterized in that: The number of the first lenses is no less than two.

4. The ranging telescope according to claim 1, characterized in that: The prism assembly also includes a second prism, which is arranged on the first optical path and located between the objective lens and the first prism, and the second prism is a Schmidt-Behan prism.

5. The ranging telescope according to claim 4, characterized in that: The opening of the channel from the second prism to the objective lens gradually becomes larger.

6. The ranging telescope according to claim 1, characterized in that: The first prism includes a first triangular prism and a second triangular prism. The first triangular prism and the second triangular prism are combined to form a quadrangular prism. The mating surfaces of the first triangular prism and the second triangular prism face the eyepiece and the lens group.

7. The ranging telescope according to claim 6, characterized in that: The bonding surface forms an angle of 45 degrees with the display surface of the display.

8. The ranging telescope according to claim 6, characterized in that: The fitting surface forms an angle of 45 degrees with the axis of the objective lens.

9. The ranging telescope according to claim 1, characterized in that: The distance measuring mechanism comprises a transmitting end and a receiving end, wherein the transmitting end is used for transmitting infrared rays, and the receiving end is used for receiving reflected infrared rays.

10. The ranging telescope according to claim 1, characterized in that: The lens assembly also includes a third lens, which is arranged between the eyepiece and the lens group.

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