Laser ranging telescope capable of switching multiplying power

Abstract

A laser ranging telescope capable of switching multiplying power comprises a main body, the main body is provided with a laser channel, a first light path channel and a second light path channel, and a through hole is formed in the joint of the first light path channel and the second light path channel; the first objective lens group and the eyepiece group are respectively arranged at two axial ends of the first light path channel; the second objective lens group is arranged at one axial end of the second light path channel, and the reflecting mirror is arranged in the second light path channel and is used for reflecting the natural light entering the second light path channel to the light reflecting switching plate; the reflective switching plate is arranged at the joint and can rotate to a first position where the through hole is closed, and at the moment, natural light emitted by the target object penetrates through the first objective lens group to enter the first light path channel and is imaged at the eyepiece group; or the target object rotates to a second position in the first light path channel, and at the moment, natural light emitted by the target object passes through the second objective lens group, enters the second light path channel, is reflected into the first light path channel by the reflective switching plate, and then is imaged at the eyepiece group.

Description

Technical Field

[0001] The utility model relates to the field of optoelectronic technology, in particular to a laser ranging telescope with switchable magnification. Background Art

[0002] The optical path of a laser ranging telescope consists of the telescope optical path (natural light path) and the laser ranging optical path (laser transmission optical path plus laser reception optical path). Existing laser ranging telescopes have increasingly powerful ranging capabilities, which has led to higher requirements for the magnification of their observation systems. However, since the observation and laser ranging optical paths are currently fixed together, switching the magnification of the observation system is difficult. Switching the magnification separately would also be inadequate for applications with a wide viewing angle at close range. Therefore, improvements are necessary. Utility Model Content

[0003] In view of this, the present invention provides a laser ranging telescope with switchable magnification, aiming to solve or at least improve the above-mentioned problem to a certain extent.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions: a main body, the main body has a laser channel, and a first optical path channel and a second optical path channel arranged in parallel along the axial direction, the first optical path channel and the second optical path channel can be connected through a through hole; a first objective lens group is arranged at one axial end of the first optical path channel; an eyepiece group is arranged at the other axial end of the first optical path channel; a second objective lens group is arranged at one axial end of the second optical path channel; a reflective switching plate is arranged in the first optical path channel, the reflective switching plate can be rotated to a first position and a second position; a reflector is tilted and arranged at the first optical path channel. The second optical path channel is used to reflect the natural light entering the second optical path channel to the reflective switching plate; wherein, when the reflective switching plate is in the first position, the reflective switching plate closes the through hole, and the natural light emitted by the target object passes through the first objective lens group into the first optical path channel and forms an image at the eyepiece group; when the reflective switching plate is in the second position, the first optical path channel is connected with the second optical path, and the natural light emitted by the target object passes through the second objective lens group into the second optical path channel, and is reflected by the reflective switching plate into the first optical path channel, and then forms an image at the eyepiece group.

[0005] In some embodiments, the laser channel is independent of the first optical path channel and the second optical path channel.

[0006] In some embodiments, the laser channel includes a laser emission channel and a laser receiving channel, wherein the laser emission channel at least partially overlaps with the first optical path channel, and the laser receiving channel at least partially overlaps with the second optical path channel.

[0007] In some embodiments, a laser emitter is provided between the first objective lens group and the reflective switching plate for emitting laser light; and a laser receiver is further provided at the other axial end of the second optical path channel for receiving laser light.

[0008] In some embodiments, a laser emitter is provided at the other axial end of the second optical path channel for emitting laser light; and a laser receiver is provided between the first objective lens group and the reflective switching plate for receiving laser light.

[0009] In some embodiments, a first dichroic mirror is provided in the first optical path channel for transmitting natural light and reflecting laser light, and the first dichroic mirror is arranged closer to the first objective lens group relative to the reflective switching plate; the reflector is a second dichroic mirror for reflecting natural light and transmitting laser light.

[0010] In some embodiments, the reflective switching plate is provided with a rotating shaft that is engaged with and exposed on the main body, for rotating the reflective switching plate; the reflective switching plate has a rotatable free end relative to the other end of the rotating shaft, wherein the free end is arranged closer to the eyepiece relative to the rotating shaft.

[0011] In some embodiments, when the reflective switching plate is located at the second position, the reflective switching plate and the first dichroic mirror are both tilted relative to the axial direction, and the tilt directions of the reflective switching plate and the first dichroic mirror are consistent.

[0012] In some embodiments, the imaging magnification of the second objective lens group is greater than that of the first objective lens group.

[0013] In some embodiments, a laser emitter is provided between the first objective lens group and the optical switching plate for emitting laser light; and a laser receiver is provided between the reflector and the second objective lens group for receiving laser light.

[0014] In some embodiments, the transmitting end of the laser transmitter and / or the receiving end of the laser receiver are respectively provided with a laser coupling mirror.

[0015] In some embodiments, a first laser reflection mirror and a second laser reflection mirror are respectively arranged on both sides of the first dichroic mirror. The first laser emission mirror is located between the first objective lens group and the reflective switching plate, and is used to reflect the laser emitted by the laser emitter to the second laser reflection mirror. The second laser reflection mirror is used to reflect the laser reflected by the first laser reflection mirror to the first dichroic mirror.

[0016] In some embodiments, the direction in which the laser emitter emits laser light is perpendicular to the axial direction of the laser ranging telescope.

[0017] In some embodiments, the main body is provided with a digital imaging module and a prism group. The prism group is arranged in the first optical path channel and is located between the eyepiece and the first dichroic mirror. The digital imaging module is arranged between the prism group and the laser receiver, and is used to process the laser received by the laser receiver into a digital image and merge the digital image prism group into the prism group.

[0018] The laser ranging telescope with switchable magnification of the embodiment of the utility model is configured to connect or close the first optical path channel and the second optical path channel by providing a rotatable reflective switching plate between the first optical path channel and the second optical path channel, thereby obtaining a target image through the switched optical path at the eyepiece group; in addition, the operation of the reflective switching plate does not affect the ranging function of the laser ranging channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a stereoscopic diagram of the laser ranging telescope with switchable magnification according to the first embodiment of the present invention.

[0021] Figure 2 for Figure 1 Front view of the laser ranging telescope with switchable magnification.

[0022] Figure 3 for Figure 1 Cross-section of the switchable magnification laser ranging telescope along line AA.

[0023] Figure 4 for Figure 1 A cross-sectional view of a laser ranging telescope with switchable magnification along line BB, showing a portion of the laser emission optical path.

[0024] Figure 5 for Figure 1 A top view of the laser ranging telescope with switchable magnification.

[0025] Figure 6 for Figure 5 A cross-sectional view of a laser ranging telescope with switchable magnification along AA, wherein the reflective switching plate is located at the second position.

[0026] Figure 7 for Figure 5A cross-sectional view of a laser ranging telescope with switchable magnification along line AA, wherein the reflective switching plate is in the second position. The diagram shows the natural light path passing through the second optical path channel and the first optical path channel.

[0027] Figure 8 for Figure 5 Another cross-sectional view of the laser rangefinder telescope with switchable magnification along line AA, wherein the reflective switching plate is in the first position. The natural light path passing through the first optical path channel is shown.

[0028] Figure 9 for Figure 5 A cross-sectional view of a laser rangefinder telescope with switchable magnification along the AA line, wherein the reflective switching plate is in the first position. A diagram showing another portion of the laser emission optical path and the laser reception optical path is also shown.

[0029] Figure 10 This is a cross-sectional view of a laser ranging telescope with switchable magnification according to the second embodiment of the present invention.

[0030] Figure 11 This is a cross-sectional view of a laser ranging telescope with switchable magnification according to the third embodiment of the present invention, showing part of the laser emission optical path and the laser receiving optical path.

[0031] Figure 12 for Figure 11 Another cross-sectional view of the switchable magnification, showing another part of the laser emission optical path and the laser receiving optical path.

[0032] Figure 13 This is a structural schematic diagram of a laser ranging telescope with switchable magnification according to the fourth embodiment of the present invention.

[0033] Figure 14 This is a schematic structural diagram of a laser ranging telescope with switchable magnification according to the fifth embodiment of the present invention.

[0034] Figure 15 This is a structural schematic diagram of a laser ranging telescope with switchable magnification according to the sixth embodiment of the present invention.

[0035] Figure numerals: 100, laser ranging telescope; 10, main body; 11, first optical path channel; 111, first objective lens group; 112, eyepiece group; 114, prism group; 115, first dichroic mirror; 12, second optical path channel; 121, second objective lens group; 122, reflecting mirror; 13, through hole; 132, reflective switching plate; 1321, rotating shaft; 14, laser channel; 15, laser emission channel; 151, laser emitter; 152, first laser reflecting mirror; 153, second laser reflecting mirror; 154, first laser coupling mirror; 16, laser receiving channel; 161, laser receiver; 162, second laser coupling mirror; 363, third laser reflecting mirror; 364, fourth laser reflecting mirror; 365, second dichroic mirror. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0039] like Figure 1-6As shown in Figures 9 and 10 , a laser ranging telescope 100 with switchable magnification according to an embodiment of the present invention comprises a main body 10 and an optical element disposed in the main body 10. The main body 10 is the shell of the laser ranging telescope 100. The main body 10 defines a laser channel 14 and a first optical path channel 11 and a second optical path channel 12 arranged in parallel along the axial direction. The axial direction is the direction from the target object to the laser ranging telescope 100. The laser channel 14 is used to transmit laser light, and the first optical path channel 11 and the second optical path channel 12 are used to transmit natural light. As shown in the figure, a through hole 131 is provided at the junction of the first optical path channel 11 and the second optical path channel 12, so that the first optical path channel 11 and the second optical path channel 12 can be connected.

[0040] like Figure 6 As shown, a first objective lens assembly 111 is provided at the end of the first optical channel 11 near the target object, for magnifying the target object at a first magnification. Correspondingly, a second objective lens assembly 121 is provided at the end of the second optical channel 12 near the target object, for magnifying the target object at a second magnification. An eyepiece assembly 112 is provided at the other end of the first optical channel 11, for magnifying the target object and forming a target image. A prism assembly 114 is also provided within the first optical channel 11, located near the eyepiece. Natural light is focused by the first objective lens assembly or the second objective lens assembly, and then is directed through the prism assembly 114 to the eyepiece assembly 112, where it is formed into an image.

[0041] In this embodiment, the magnification of the first objective lens group 111 is 6 times, and the magnification of the second objective lens group 121 is 10 times. The second objective lens group 121 is axially closer to the target object than the first objective lens group 111. In other embodiments, the magnifications of the first objective lens group 111 and the second objective lens group 121 can also be set according to actual needs.

[0042] A reflective switching plate 132 is also provided in the first optical path channel 11. The first end of the reflective switching plate 132 is provided with a rotating shaft 1321 that is engaged and exposed to the main body 10 and is used to rotate the reflective switching plate 132. The other end of the reflective switching plate 132 is a rotatable free end. The reflective switching plate 132 can be rotated to a first position that closes the through hole 131, or to a second position. When the reflective switching plate 132 is in the first position, it is attached to the inner wall of the first optical path channel 11. The free end of the reflective switching plate 132 is arranged closer to the eyepiece group relative to the rotating shaft 1321. When the reflective switching plate 132 is in the second position, its free end abuts against the inner wall of the first optical path channel 11 on the side away from the second optical path channel 12, so that the reflective switching plate 132 as a whole is tilted relative to the axis of the first optical path channel 11. Thus, natural light entering the second optical channel 12 is reflected by the optical component and then reflected by the reflective switching plate 132 to the first optical channel 11. Preferably, a limiting step is provided on the inner wall of the first optical channel 11 away from the second optical channel 12 to fix the reflective switching plate 132 in the second position.

[0043] like Figure 8 As shown, when the reflective switching plate 132 is in the first position, the natural light emitted by the target object is focused by the first objective lens group 111 into the first optical path channel 11, and is transmitted through the first dichroic mirror 115, and is reflected by the prism group 114 to the eyepiece to form an image. At this time, the observer sees the image magnified by the first objective lens, the eyepiece group 112, and the eyepiece group 112. Figure 7 As shown, when the reflective switching plate 132 is in the second position, natural light emitted by the target object is focused by the second objective lens assembly 121 into the second optical path 12. It is then reflected by the reflective switching plate 132 into the first optical path 11, and then reflected by the prism assembly 114 toward the eyepiece to form an image. At this point, the observer sees an image magnified by the second objective lens, prism assembly 114, and eyepiece assembly 112. The telescope of this embodiment, by disposing a rotatable reflective switching plate 132 between the first optical path 11 and the second optical path 12, controls the optical path of natural light entering the eyepiece, thereby switching the telescope's magnification without affecting laser transmission and ranging.

[0044] like Figure 9 As shown, the laser channel 14 includes a laser emitting channel 15 and a laser receiving channel 16 , wherein the laser emitting channel 15 at least partially overlaps with the second optical path channel 12 , and the laser receiving channel 16 at least partially overlaps with the first optical path channel 11 .

[0045] Specifically, in this embodiment, a laser emitter 151 is provided in the first optical path channel 11 for emitting laser light. A first dichroic mirror 115 is also provided in the first optical path channel 11 for reflecting laser light and transmitting natural light. The laser light emitted by the laser emitter 151 is reflected by the first dichroic mirror 115 and emitted from the first optical path channel and transmitted to the target object. The reflector 122 in the second optical path channel 12 is a second dichroic mirror for reflecting natural light and transmitting laser light. A laser receiver 161 is also provided at the other end of the second optical path channel 12 for receiving laser light. Preferably, the emitting end of the laser emitter 151 and the receiving end of the laser receiver 161 are respectively provided with a first laser coupling mirror 154 and a second laser coupling mirror 162 for converging and collimating the laser light.

[0046] Please refer again Figure 6 The first dichroic mirror 115 is located between the first objective lens group 111 and the eyepiece lens group 112 and is tilted relative to the axial direction. A first laser reflection mirror 152 and a second laser reflection mirror 153 are respectively provided on either side of the first dichroic mirror 115. The first laser reflection mirror 152 and the second laser reflection mirror 153 are positioned so as not to interfere with the transmission of natural light entering the first optical path 11. The first laser emission mirror is located between the reflective switching plate 132 and the first objective lens group 111 and is used to reflect the laser light emitted by the laser emitter 151 to the second laser reflection mirror 153. The second laser reflection mirror 153 is used to reflect the laser light reflected by the first laser reflection mirror 152 back to the first dichroic mirror 115.

[0047] The direction of the laser emitted by the laser emitter 151 is perpendicular to the axial direction of the laser ranging telescope 100. The laser emitted by the laser emitter 151 is reflected by the first laser reflecting mirror 152 and the second laser reflecting mirror 153 in sequence (see Figure 4 ), then reflected by the first dichroic mirror 115, and then emitted from the first optical path channel 11 and transmitted to the target object, forming a laser emission optical path (see Figure 9 The laser light reflected by the target enters the second optical path channel 12, passes through the laser-transparent second dichroic mirror, and is received by the laser receiver 161 behind it, forming a laser receiving optical path. This shows that the deflection of the reflective switching plate 132 does not affect the transmission of the laser light path. The principle of laser ranging is described in detail in the prior art and will not be elaborated here.

[0048] In this embodiment, the reflective switching plate 132 is positioned closer to the eyepiece than the first dichroic mirror 115, so that the deflection of the reflective switching plate 132 does not affect the transmission of laser light in the first optical path 11. Furthermore, the tilt direction of the first dichroic mirror 115 relative to the axial direction is consistent with the tilt direction of the reflective switching plate 132 when in the second position. This allows the laser light emitted by the laser emitter 151 to be reflected sequentially by the first laser reflector 152, the second laser reflector 153, and the first dichroic mirror 115 before exiting the first optical path 11 and reaching the target object.

[0049] Preferably, the inclination of the reflective switching plate 132 is the same as that of the second dichroic mirror. In this way, natural light entering the second optical path 12 along the axial direction can continue to enter the prism assembly 114 along the axial direction after being reflected by the second dichroic mirror and the reflective switching plate 132.

[0050] A digital imaging module is also provided within the main body 10. The digital imaging module can be disposed between the prism assembly 114 and the laser receiver 161. The digital imaging module is connected to the laser receiver 161 and is configured to process the laser light received by the laser receiver 161 into a digital image, and then integrate the digital image into the prism assembly 114 and form an image at the eyepiece assembly 112. In this way, when a user observes a target object through the telescope, the image of the target object and its distance value from the telescope can be simultaneously displayed at the eyepiece. Preferably, the laser receiver 161 is axially closer to the target object relative to the eyepiece assembly 112, so that the axial length of the first optical path channel 11 is greater than that of the second optical path channel 12.

[0051] Figure 10 The second embodiment of the laser ranging telescope 200 of the present application is shown. It is similar to the first embodiment, differing only in the locations of the laser emitter 251 and the laser receiver 261. The laser emitter 251 is located at the axial end of the second optical path channel 22 opposite the second objective lens assembly 221, while the laser receiver 261 is located within the first optical path channel 11 and between the first objective lens assembly 211 and the reflective switching plate 232. The natural light path of this embodiment is the same as that of the first embodiment, but the direction of the laser emission optical path is opposite to that of the laser reception optical path of the first embodiment, and the direction of the laser reception optical path is opposite to that of the laser emission optical path of the first embodiment.

[0052] Figure 12FIG3 shows a laser ranging telescope 300 according to a third embodiment of the present application, which is similar to the first embodiment, except that it further includes a laser reflecting mirror group and the position of the laser receiver 361 is also different. The laser receiver 361 is located at the second optical path channel 32 and is arranged close to the second objective lens group 221, and its position does not interfere with the natural light entering the second optical path channel 32. In addition, the laser receiver 361 is located on the inner wall of the second optical path channel 32 on the side away from the first optical path channel 31. A laser reflecting mirror group is also provided in the second optical path channel 32, including a third laser reflecting mirror 363, a fourth laser reflecting mirror 364 and a second dichroic mirror 365. The second dichroic mirror 365 is used to reflect laser light and transmit natural light. The laser reflecting mirror group is located between the reflecting mirror 322 and the second objective lens group 321. In this embodiment, the laser emission optical path is the same as the laser emission optical path of the first embodiment. After the laser reflected by the target object enters the second optical path channel 32, it is reflected by the second dichroic mirror 365 and the fourth laser reflecting mirror 364 in succession (see attached FIG3). Figure 11 The laser receiving optical path is then reflected by the third laser reflecting mirror 363 and received by the laser receiver 361 (see the attached figure). Figure 12 In this embodiment, since the laser does not pass through the reflector 322, the reflector 322 can be a reflector that can reflect natural light.

[0053] Figure 13 A laser ranging telescope 400 of the fourth embodiment of the present application is shown, which is similar to the first embodiment, except that the laser receiver 451 and the laser transmitter 456 are arranged independently of the first optical path channel 41 and the second optical path channel 42, that is, the laser ranging optical path is independent of the natural light optical path.

[0054] Figure 14 The fifth embodiment of the present application is a laser ranging telescope 500, which is similar to the first or second embodiment, except that the laser emitter 551 is set independently of the first optical path channel 51 and the second optical path channel 52, that is, the laser emission optical path is set independently of the natural light optical path. In this case, the first optical path channel or the second optical path channel can also serve as a laser receiving channel. The laser receiving optical path of this embodiment is the same as that of the first embodiment. See the attached figure. Figure 9 , or the direction of the laser emission light path is opposite to that of the second embodiment.

[0055] Figure 15 The sixth embodiment of the present application is shown as a laser ranging telescope 600. Similar to the first or second embodiment, the laser receiver 661 is provided independently of the first optical path channel 61 and the second optical path channel 62. That is, the laser receiving optical path is provided independently of the natural light optical path. In this case, the first optical path channel 61 or the second optical path channel 62 can also serve as a laser emission channel. The laser emission optical path of this embodiment is the same as that of the first embodiment. See the attached figure. Figure 9, or the direction of the laser receiving optical path is opposite to that of the second embodiment.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A laser ranging telescope with switchable magnification, characterized in that: include: A main body, the main body having a laser channel, and a first optical path channel and a second optical path channel arranged in parallel along the axial direction, a through hole being provided at the junction of the first optical path channel and the second optical path channel, and the first optical path channel and the second optical path channel being connected through the through hole; A first objective lens group is provided at one axial end of the first optical path; an eyepiece assembly, provided at the other axial end of the first optical path; A second objective lens group is provided at one axial end of the second optical path; a reflective switching plate, disposed in the first optical path, and capable of rotating to a first position and a second position; a reflector, obliquely disposed in the second light path channel, for reflecting natural light entering the second light path channel to the reflective switching plate; When the reflective switching plate is in the first position, the reflective switching plate closes the through hole, and the natural light emitted by the target object passes through the first objective lens group, enters the first optical path, and forms an image at the eyepiece group; When the reflective switching plate is in the second position, the first optical path channel is connected to the second optical path, and the natural light emitted by the target object passes through the second objective lens group into the second optical path channel and is reflected by the reflective switching plate to the eyepiece group to form an image.

2. The laser ranging telescope with switchable magnification according to claim 1, characterized in that: The laser channel includes a laser emission channel and a laser receiving channel, wherein the laser emission channel at least partially overlaps with the first optical path channel, and the laser receiving channel at least partially overlaps with the second optical path channel.

3. The laser ranging telescope with switchable magnification according to claim 1, characterized in that: The laser emission channel is set independently of the first optical path channel and the second optical path channel; and / or The laser receiving channel is set independently of the first optical path channel and the second optical path channel.

4. The laser ranging telescope with switchable magnification according to claim 1, characterized in that: A laser emitter is provided between the first objective lens group and the reflective switching plate, for emitting laser light; A laser receiver is further provided at the other axial end of the second optical path channel for receiving laser light.

5. The laser ranging telescope with switchable magnification according to claim 1, characterized in that: A laser emitter is provided at the other axial end of the second optical path channel for emitting laser light; A laser receiver is provided between the first objective lens group and the reflective switching plate for receiving laser light.

6. The laser ranging telescope with switchable magnification according to claim 4 or 5, characterized in that: A first dichroic mirror is provided in the first optical path channel for transmitting natural light and reflecting laser light, and the first dichroic mirror is arranged closer to the first objective lens group than the reflective switching plate; The reflector is a second dichroic mirror, which is used to reflect natural light and transmit laser light.

7. The laser ranging telescope with switchable magnification according to claim 6, characterized in that: When the reflective switching plate is located at the second position, both the reflective switching plate and the first dichroic mirror are tilted relative to the axial direction, and the tilt directions of the reflective switching plate and the second dichroic mirror are consistent.

8. The laser ranging telescope with switchable magnification according to claim 1, characterized in that: The focal length and imaging magnification of the second objective lens group are both greater than those of the first objective lens group.

9. The laser ranging telescope with switchable magnification according to claim 1, characterized in that: A laser emitter is provided between the first objective lens group and the optical switching plate, for emitting laser light; A laser receiver is provided between the reflector and the second objective lens group for receiving laser light.

10. The laser ranging telescope with switchable magnification according to any one of claims 4, 5 or 9, characterized in that: The transmitting end of the laser transmitter and / or the receiving end of the laser receiver are provided with a laser coupling mirror.

Images