Telescopic range finder with detachable magnifying lens system
By designing a detachable telephoto lens system on a telescope rangefinder and using a combination of positive and negative focal length lens modules, the problem that telescope rangefinders cannot simultaneously achieve both low and high magnification is solved. This achieves low-cost magnification of distant objects, and the system can be used with multiple devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANHAI PHOTOELECTRICITY TECH CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-23
Smart Images
Figure CN224399593U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of telescope system technology, and in particular to a telescope rangefinder with a detachable magnifying lens system. Background Technology
[0002] Laser rangefinders mainly include pulsed laser rangefinders, phase-detection laser rangefinders, and triangulation laser rangefinders. The most common type of pulsed laser rangefinder is the telescope laser rangefinder, which includes a telescope and a laser transmitter / receiver module. It is primarily used for medium- to long-range laser ranging. The process of pulsed laser ranging is as follows: the laser emitted by the rangefinder is reflected by the object being measured and then received by the rangefinder. The rangefinder simultaneously records the round-trip time of the laser. Half the product of the speed of light and the round-trip time is the distance between the rangefinder and the object being measured. This distance information is then displayed on the focal plane of the eyepiece and received and read by the observer.
[0003] Currently, most telescope rangefinders on the market have a fixed magnification, meaning they can only observe objects at that fixed magnification. They cannot simultaneously achieve the advantages of a wide field of view at lower magnification and the excellent magnification of objects at higher magnification. Furthermore, some zoom telescopes and focusing lens telescope objective or eyepiece systems on the market sacrifice imaging quality at different magnifications in order to achieve both high and low magnifications, and these systems are also costly.
[0004] Therefore, how to provide a low-cost telescope rangefinder that can further magnify distant objects while ensuring the imaging effect of a rangefinder with low magnification is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] This invention addresses the current state of research by providing a telescope rangefinder with a detachable teleconverter system. While maintaining the imaging quality of a low-magnification rangefinder, it also enables further magnification of distant objects. Furthermore, the detachable teleconverter system is compatible with multiple rangefinders, has relatively low cost, and is highly operable.
[0006] This utility model provides a telescope rangefinder with a detachable telescope system, comprising: a telescope rangefinder system, and a telescope system detachably mounted outside the telescope rangefinder system; wherein,
[0007] The telescope ranging system includes a telescope objective lens system and a telescope eyepiece system housed inside the telescope tube and arranged sequentially along the same optical axis;
[0008] The teleconverter system is detachably mounted outside the telescope tube and is located at the front end of the telescope objective system of the telescope ranging system.
[0009] Preferably, the object reflects a parallel beam of light that is incident on the intensifier system and exits as parallel light onto the telescope objective system.
[0010] Preferably, the teleconverter system includes a positive focal length lens module and a negative focal length lens module arranged sequentially along the external incident light path.
[0011] Preferably, the magnifying lens system includes a convex lens and a concave lens arranged sequentially along the external incident light path.
[0012] Preferably, the distance D between the telescope objective system and the teleconverter system is greater than the focal length F2 of the teleconverter system.
[0013] Preferably, the focal length of the objective lens system after combining the telescope system and the inverter system is F = F1*F2 / (F1+F2-D), where F1 is the focal length of the telescope objective lens system.
[0014] Preferably, the total magnification of the telescope rangefinder is (f / F1 + f / F2 - D / F1F2). -1 , where f is the focal length of the telescope eyepiece system.
[0015] Preferably, the telescope ranging system further includes a transmitting system and a receiving system housed within the telescope tube.
[0016] Preferably, the emitted or received beam of the transmitting or receiving system passes through the telescope objective system and the intensifier system.
[0017] Compared with the prior art, this utility model has the following advantages:
[0018] This invention provides an externally mounted, detachable teleconverter system that, while maintaining the imaging quality of a low-magnification rangefinder, enables further magnification of distant objects. The parallel light emitted by the teleconverter system minimizes its impact on the rangefinding capability of the original telescope rangefinder. Furthermore, the detachable teleconverter system is compatible with multiple devices, has relatively low cost, facilitates the modification and upgrading of low-magnification rangefinders, and offers high operability. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0020] Figure 1This is a schematic diagram of the optical path of the intensifier system relative to the telescope objective system provided in this embodiment of the present invention;
[0021] Figure 2 This is a schematic diagram of the structure of a telescope rangefinder with a detachable magnifying lens system provided in an embodiment of the present invention. Figure 1 ;
[0022] Figure 3 This is a schematic diagram of the structure of a telescope rangefinder with a detachable magnifying lens system provided in an embodiment of the present invention. Figure 2 . Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] This utility model discloses a telescope rangefinder with a detachable magnifying lens system, comprising: a telescope rangefinder system, and a magnifying lens system detachably mounted outside the telescope rangefinder system. The telescope rangefinder system is used to locate a target, and the magnifying lens system is used to magnify the target details; wherein...
[0025] The telescope rangefinding system includes a telescope objective lens system and a telescope eyepiece system housed within the telescope tube and arranged sequentially along the same optical axis; a teleconverter system is detachably mounted outside the telescope tube and located at the front end of the telescope objective lens system of the telescope rangefinding system, such as... Figure 1-2 As shown.
[0026] In practice, the apertures of the telescope ranging system and the teleconverter system are matched, and the distance between the teleconverter system and the telescope objective lens is fixed.
[0027] In one embodiment, the object reflects a parallel beam of light that is incident on the intensifier system and exits as parallel light onto the telescope objective system. Therefore, placing the intensifier system in front of the telescope rangefinder system can magnify the maximum magnification of the telescope system without affecting its use.
[0028] In one embodiment, the teleconverter system includes a positive focal length lens module and a negative focal length lens module arranged sequentially along the external incident light path.
[0029] In this embodiment, the teleconverter system includes a convex lens and a concave lens arranged sequentially along the external incident light path.
[0030] In one embodiment, the distance D between the telescope objective system and the teleconverter system is greater than the focal length F2 of the teleconverter system, and the focal length F2 of the teleconverter system should be as small as possible.
[0031] In this embodiment, the focal length of the objective lens system after combining the telescope system and the teleconverter system is F = F1*F2 / (F1+F2-D), where F1 is the focal length of the telescope objective lens system.
[0032] In this embodiment, the total magnification of the telescope rangefinder is (f / F1 + f / F2 - D / F1F2). -1 , where f is the focal length of the telescope eyepiece system.
[0033] In one embodiment, the telescope ranging system further includes a transmitting system and a receiving system housed within the telescope tube, and the transmitting system and the receiving system can be interchanged, with the transmitting system emitting parallel light and the receiving system receiving the parallel light.
[0034] It should be noted that in the telescope or receiving optical path, a convex lens or a lens module with a positive focal length is used to converge the light, and a concave lens or a lens module with a negative focal length is used to collimate the converged light so that the light can enter the telescope system in parallel; in the transmitting optical path, a concave lens or a lens module with a negative focal length is used to expand the beam of light obtained from telescope ranging, and a convex lens or a lens module with a positive focal length is used to collimate the expanded beam of light.
[0035] In this embodiment, as Figure 3 As shown, the emitted or incident beam of the transmitting or receiving system passes through the telescope objective lens system and the intensifier system. When the transmitting or receiving system shares an objective lens with the telescope objective lens system, the addition of the intensifier system does not affect the transmission and reception of the telescope rangefinder, nor does it affect the distance measurement, since the intensifier system also emits parallel light.
[0036] This invention can first lock the approximate location of a target in a large scene, and then use a magnifying lens system to magnify the details of the target object, which is of great significance in golf range finding and hunting scenarios.
[0037] The above provides a detailed description of a telescope rangefinder with a detachable magnifying lens system provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
[0038] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A telescopic range finder having a detachable magnifying lens system, characterized in that, include: A telescopic rangefinding system, and a magnifying lens system detachably mounted externally to the telescopic rangefinding system; wherein, The telescope ranging system includes a telescope objective lens system and a telescope eyepiece system housed inside the telescope tube and arranged sequentially along the same optical axis; The teleconverter system is detachably mounted outside the telescope tube and is located at the front end of the telescope objective system of the telescope ranging system.
2. The telescopic range finder with detachable magnifying lens system according to claim 1, wherein, The object reflects a parallel beam of light that is incident on the intensifier system and exits as parallel light onto the telescope objective system.
3. The telescopic range finder with detachable magnifying lens system according to claim 2, wherein, The teleconverter system includes a positive focal length lens module and a negative focal length lens module arranged sequentially along the external incident light path.
4. The telescopic range finder with detachable magnifying lens system according to claim 2, wherein, The magnifying lens system includes a convex lens and a concave lens arranged sequentially along the external incident light path.
5. A telescope rangefinder with a detachable magnifying lens system according to claim 1, characterized in that, The distance D between the telescope objective system and the teleconverter system is greater than the focal length F2 of the teleconverter system.
6. A telescope rangefinder with a detachable magnifying lens system according to claim 5, characterized in that, The focal length of the objective lens system after combining the telescope system and the teleconverter system is F = F1 * F2 / (F1 + F2 - D), where F1 is the focal length of the telescope objective lens system.
7. A telescope rangefinder with a detachable magnifying lens system according to claim 5, characterized in that, The total magnification of the telescopic range finder is (f / F1+f / F2-D / F1F2) -1 wherein f is the focal length of the telescopic eyepiece system.
8. A telescope rangefinder with a detachable magnifying lens system according to claim 1, characterized in that, The telescope ranging system also includes a transmitting system and a receiving system housed within the telescope tube.
9. A telescope rangefinder with a detachable magnifying lens system according to claim 8, characterized in that, The emitted or received beam from the transmitting or receiving system passes through the telescope objective system and the magnifying lens system.