A compact distance measurement and imaging integrated lens

Abstract

The present invention discloses a compact distance measurement and imaging integrated lens, comprising a first lens, a second lens, a lens seat, and an annular circuit board, wherein the first lens is arranged on the lens seat; a first mounting cavity and a second mounting cavity are arranged on the lens seat, a laser emitting lens group is arranged in the first mounting cavity, and a laser receiving lens group is arranged in the second mounting cavity; the laser emitting lens group and the laser receiving lens group are located within the diameter range of the first lens; a first avoidance groove corresponding to the laser emitting lens group and a second avoidance groove corresponding to the laser receiving lens group are arranged on the first lens. In the present invention, the laser emitting lens group and the laser receiving lens group are arranged within the diameter range of the first lens, so that the arrangement of the laser emitting lens group and the laser receiving lens group does not occupy space outside the area where the first lens is located, so that the overall structure is more compact, the appearance is more compact, and the device is convenient to carry.

Description

Technical Field

[0001] The present invention relates to the technical field of distance measuring equipment, and in particular to a compact distance measuring and imaging integrated lens. Background Art

[0002] For handheld optical imaging devices used in outdoor sports, such as handheld infrared thermal imaging telescopes, users need to know the distance data of the target and use distance measuring equipment, such as laser distance measuring devices. Scopes used for precision shooting, such as infrared thermal imaging scopes, are usually equipped with laser distance measuring devices to calibrate the target distance to improve shooting accuracy.

[0003] Laser rangefinders usually consist of an optical system for emitting laser signals, an optical system drive circuit for measuring target reflection signals, an information processing circuit board, and fixed structural parts.

[0004] Laser rangefinders currently on the market usually use a laser rangefinder in combination with an optical observation device. The laser rangefinder is connected to the optical observation device in an external fixing manner. This fixing method is to hang the laser rangefinder on the housing of the optical observation device. The laser rangefinder is separated from the optical components on the optical observation device. This setting method causes the laser rangefinder to protrude from the optical observation device, increasing the external volume of the laser rangefinder and reducing the portability of the device. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies in the prior art and provide a compact distance measurement and imaging integrated lens.

[0006] The objective of the present invention is achieved through the following technical solutions: a compact ranging and imaging integrated lens, comprising a first lens, a second lens, a lens seat, and an annular circuit board, wherein the first lens is arranged on the lens seat; a first mounting cavity and a second mounting cavity are provided on the lens seat, a laser emitting lens group is installed in the first mounting cavity, and a laser receiving lens group is installed in the second mounting cavity; the laser emitting lens group and the laser receiving lens group are located within the diameter range of the first lens; a first avoidance groove corresponding to the laser emitting lens group and a second avoidance groove corresponding to the laser receiving lens group are provided on the first lens; and the annular circuit board is located behind the laser emitting lens group and the laser receiving lens group.

[0007] Preferably, the laser emitting lens group and the laser receiving lens group are respectively located at the edges of both sides of the first lens.

[0008] Preferably, it also includes a main tube, an outer tube, a focusing tube, a focusing lens seat, and a second lens, wherein the second lens is arranged on the focusing lens seat, and a spring is arranged between the second lens and the main tube; the focusing lens seat is slidably connected to the main tube; the focusing lens seat is arranged in the focusing tube, and the focusing tube and the focusing lens seat are threadedly matched; one end of the main tube is connected to the lens seat, and the other end of the main tube is fixedly connected to the outer tube; the focusing tube is arranged between the outer tube and the focusing lens seat, and a rotating drive mechanism for driving the focusing tube to rotate is provided on the outer tube.

[0009] Preferably, a gear ring is provided on the outer side of the focusing tube, and the rotary drive mechanism comprises a focusing gear rotatably connected to the outer tube, the focusing gear is meshed with the gear ring on the focusing tube, and a rotating wheel is connected to the focusing gear.

[0010] Preferably, the focusing gear comprises a gear body and a gear shaft arranged on the gear body, a bearing is arranged on the outer cylinder, the gear shaft is connected to the bearing, and the rotating wheel is connected to the gear shaft.

[0011] Preferably, the annular circuit board is arranged between the main tube and the lens seat, and a laser emitting module corresponding to the laser emitting lens group and a laser receiving module corresponding to the laser receiving lens group are provided on the annular circuit board.

[0012] Preferably, an extension portion is provided at one end of the main tube away from the lens seat, the extension portion extends along the axial direction of the main tube, and a guide groove is formed between adjacent extension portions. A guide protrusion is provided on the outer side of the focusing lens seat, and the guide protrusion is inserted into the guide groove and can slide along the guide groove; an external thread is provided on the guide protrusion, and an internal thread matching the external thread is provided on the inner side of the focusing tube.

[0013] Preferably, the extension portion on the main tube is fixedly connected to the outer tube via a third connecting screw.

[0014] Preferably, a lens pressing ring is provided between the spring and the second lens.

[0015] Preferably, a lens fixing ring is connected to the lens seat, and the first lens is clamped between the lens fixing ring and the lens seat.

[0016] The beneficial effects of the present invention are:

[0017] 1. In the present invention, the laser emitting lens group and the laser receiving lens group are arranged within the diameter range of the first lens, so that the arrangement of the laser emitting lens group and the laser receiving lens group does not occupy the space outside the area where the first lens is located, and the arrangement of the laser emitting lens group and the laser receiving lens group will not cause an obvious bulge to be formed on the outside of the device, so that the overall structure is more compact and the appearance is more compact, which is convenient for carrying the device.

[0018] 2. In the present invention, the laser emitting lens group and the laser receiving lens group are arranged at the two ends of the diameter of the first lens. Through this arrangement, the laser emitting lens group and the laser receiving lens group are within the range of the first lens, and the distance between the two is maximized, so that the laser emitting lens group and the laser receiving lens group are separated to the maximum distance as much as possible, which can reduce the mutual interference between the laser emitting unit and the laser receiving unit and improve the ranging accuracy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is an exploded view of the present invention.

[0021] Figure 3 It is a cross-sectional view of the present invention.

[0022] Figure 4 Schematic diagram of the structure of the first lens.

[0023] Figure 5 It is a structural schematic diagram of the lens holder.

[0024] Figure 6 This is a schematic diagram of the structure of the main cylinder.

[0025] Figure 7 It is a structural schematic diagram of the focusing lens holder.

[0026] Figure 8 It is a schematic diagram of the structure of the focusing tube.

[0027] Fig. 9 It is a schematic diagram of the structure of the focusing gear.

[0028] In the figure: 1, lens fixing ring, 201, laser emitting lens group, 202, laser receiving lens group, 203, first lens, 203a, first avoidance groove, 203b, second avoidance groove, 204, lens seat, 204a, first installation cavity, 204b, second installation cavity, 205, annular circuit board, 206, first connecting screw, 301, main tube, 301a, extension part, 302, spring, 303, lens pressure ring, 304, second lens, 305, focusing lens seat, 305a, guide protrusion, 306, focusing tube, 306a, gear ring, 307, cover plate, 308, rotating wheel, 309, second connecting screw, 310, bearing, 311, focusing gear, 311a, gear shaft, 311b, gear body, 312, outer tube, 313, third connecting screw. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying 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 described embodiments 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 belong to the scope of protection of the present invention.

[0030] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0031] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0032] like Figures 1 to 9 As shown, a compact ranging and imaging integrated lens comprises a first lens 203, a second lens 304, a lens seat 204, and an annular circuit board 205, wherein the first lens 203 is arranged on the lens seat 204; a first mounting cavity 204a and a second mounting cavity 204b are provided on the lens seat 204, a laser emitting lens group 201 is installed in the first mounting cavity 204a, and a laser receiving lens group 202 is installed in the second mounting cavity 204b; the laser emitting lens group 201 and the laser receiving lens group 202 are located within the diameter range of the first lens 203; a first avoidance groove 203a corresponding to the laser emitting lens group 201 and a second avoidance groove 203b corresponding to the laser receiving lens group 202 are provided on the first lens 203; and the annular circuit board 205 is located behind the laser emitting lens group 201 and the laser receiving lens group 202.

[0033] The annular circuit board 205 is disposed between the main tube 301 and the lens seat 204 . A laser emitting module corresponding to the laser emitting lens group 201 and a laser receiving module corresponding to the laser receiving lens group 202 are disposed on the annular circuit board 205 .

[0034] In the present invention, the first lens 203 participates in the optical or infrared imaging of the distant target, and the laser emitting lens group 201 and the laser receiving lens group 202 are arranged within the diameter range of the first lens 203, so that the arrangement of the laser emitting lens group 201 and the laser receiving lens group 202 does not occupy the space outside the area where the first lens 203 is located, and the arrangement of the laser emitting lens group 201 and the laser receiving lens group 202 does not cause the outer side of the device to form an obvious convexity, so that the overall structure is more compact, the appearance is more compact, and it is convenient to carry the device. Among them, the annular circuit board 205 is used to generate laser and receive the reflected laser reflected from the target object. The laser emitting lens group 201 is used to optically process the laser generated by the annular circuit board 205. The laser generated by the laser emitting lens group 201 forms a parallel laser beam after passing through the laser emitting lens group 201 and is emitted to the target object. The laser receiving lens group 202 is used to receive and converge the laser signal reflected from the target object and converge the laser signal to the laser receiving module on the rear annular circuit board 205. The annular circuit board 205 is in a ring shape, and the hollow area in the middle of the annular circuit board 205 allows the light focused by the first lens 203 to pass normally without affecting the imaging of the optical imaging system where the first lens 203 is located.

[0035] Among them, the laser emitting lens group 201 and the laser receiving lens group 202 are respectively located at the edges of both sides of the first lens 203. The laser emitting lens group 201 and the laser emitting module on the annular circuit board 205 constitute a laser emitting unit, and the laser receiving lens group 202 and the laser receiving module on the annular circuit board 205 constitute a laser receiving unit. In the present invention, the laser emitting lens group 201 and the laser receiving lens group 202 are arranged at both ends of the diameter of the first lens 203. Through this arrangement, the laser emitting lens group 201 and the laser receiving lens group 202 are within the range of the first lens 203 while the distance between the two is maximized, so that the laser emitting lens group 201 and the laser receiving lens group 202 are separated as far as possible to the maximum distance, so that the mutual interference between the laser emitting unit and the laser receiving unit can be reduced, and the ranging accuracy of the device can be improved. In addition, since the main imaging area of ​​the first lens 203 is located in the central area of ​​the first lens 203, by arranging the laser emitting lens group 201 and the laser receiving lens group 202 at the edge position of the first lens 203, the influence on the imaging effect of the first lens 203 is greatly reduced, and the imaging quality is improved.

[0036] The present invention also includes a main tube 301, an outer tube 312, a focusing tube 306, a focusing lens seat 305, and a second lens 304. The second lens 304 is arranged on the focusing lens seat 305, and a spring 302 is arranged between the second lens 304 and the main tube 301; the focusing lens seat 305 is slidably connected to the main tube 301; the focusing lens seat 305 is arranged in the focusing tube 306, and the focusing tube 306 and the focusing lens seat 305 are threadedly matched; one end of the main tube 301 is connected to the lens seat 204, and the other end of the main tube 301 is fixedly connected to the outer tube 312; the focusing tube 306 is arranged between the outer tube 312 and the focusing lens seat 305, and a rotating driving mechanism for driving the focusing tube 306 to rotate is arranged on the outer tube 312. Among them, the annular circuit board 205 is fixedly connected to the lens seat 204 through the first connecting screw 206, and one end of the main tube 301 is threadedly connected to the lens seat 204. When focusing, the focusing lens holder 305 is slidably connected to the main barrel 301, so that the focusing lens holder 305 can only move relative to the main barrel 301 along the axial direction of the main barrel 301, but cannot rotate relative to the main barrel 301. When focusing, the focusing barrel 306 is driven to rotate by the rotary drive mechanism, and the focusing barrel 306 and the focusing lens holder 305 rotate relative to each other. Since the two are threadedly matched, the focusing barrel 306 drives the focusing lens holder 305 to move along the axial direction of the main barrel 301 when rotating, and then drives the second lens 304 to move synchronously to adjust the distance between the first lens 203 and the second lens 304, thereby realizing the focusing function. A spring 302 is provided between the second lens 304 and the main barrel 301, and the spring 302 applies pressure to the second lens 304 and the focusing fixing seat to compensate for the thread matching clearance between the focusing barrel 306 and the focusing lens holder 305, thereby improving the stability and adjustment accuracy of the focusing system.

[0037] A gear ring 306a is provided on the outer side of the focus tube 306, and the rotation driving mechanism includes a focus gear 311 rotatably connected to the outer tube 312, the focus gear 311 is meshed with the gear ring 306a on the focus tube 306, and the focus gear 311 is connected to a rotating wheel 308. When focusing, the rotating wheel 308 is rotated to drive the focus gear 311 to rotate, and when the focus gear 311 rotates, the focus tube 306 is driven to rotate, thereby driving the second lens 304 to move.

[0038] The focusing gear 311 includes a gear body 311b and a gear shaft 311a disposed on the gear body 311b, a bearing 310 is disposed on the outer cylinder 312, the gear shaft 311a is connected to the bearing 310, and the rotating wheel 308 is connected to the gear shaft 311a. The rotating wheel 308 is fixedly connected to the gear shaft 311a by a second connecting screw 309. A cover plate 307 is disposed on the rotating wheel 308.

[0039] An extension part 301a is provided at one end of the main barrel 301 away from the lens holder 204, and the extension part 301a extends along the axial direction of the main barrel 301, and a guide groove is formed between adjacent extension parts 301a. A guide protrusion 305a is provided on the outer side of the focusing lens holder 305, and the guide protrusion 305a is inserted into the guide groove and can slide along the guide groove; an external thread is provided on the guide protrusion 305a, and an internal thread matching the external thread is provided on the inner side of the focusing barrel 306. The extension part 301a on the main barrel 301 is fixedly connected to the outer barrel 312 by a third connecting screw 313.

[0040] A lens pressing ring 303 is provided between the spring 302 and the second lens 304. The lens pressing ring 303 is used to increase the contact surface between the spring 302 and the second lens 304, improve the uniformity of the force applied to the second lens 304, and prevent a local position on the second lens 304 from being crushed.

[0041] The lens holder 204 is connected with a lens fixing ring 1, and the first lens 203 is clamped between the lens fixing ring 1 and the lens holder 204. The lens fixing ring 1 and the lens holder 204 are threadedly connected.

[0042] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A compact distance measurement and imaging integrated lens, characterized in that: It comprises a first lens, a second lens, a lens seat and an annular circuit board, wherein the first lens is arranged on the lens seat; a first mounting cavity and a second mounting cavity are arranged on the lens seat, a laser emitting lens group is arranged in the first mounting cavity, and a laser receiving lens group is arranged in the second mounting cavity; the laser emitting lens group and the laser receiving lens group are located within the diameter range of the first lens; a first avoidance groove corresponding to the laser emitting lens group and a second avoidance groove corresponding to the laser receiving lens group are arranged on the first lens; the annular circuit board is located behind the laser emitting lens group and the laser receiving lens group; the laser emitting lens group and the laser receiving lens group are respectively located at the edges of both sides of the first lens; It also includes a main tube, an outer tube, a focusing tube, a focusing lens seat, and a second lens. The second lens is arranged on the focusing lens seat, and a spring is arranged between the second lens and the main tube; the focusing lens seat is slidably connected to the main tube; the focusing lens seat is arranged in the focusing tube, and the focusing tube and the focusing lens seat are threadedly matched; one end of the main tube is connected to the lens seat, and the other end of the main tube is fixedly connected to the outer tube; the focusing tube is arranged between the outer tube and the focusing lens seat, and a rotating driving mechanism for driving the focusing tube to rotate is arranged on the outer tube; The annular circuit board is arranged between the main tube and the lens seat, and a laser emitting module corresponding to the laser emitting lens group and a laser receiving module corresponding to the laser receiving lens group are arranged on the annular circuit board.

2. A compact distance measurement and imaging integrated lens according to claim 1, characterized in that: A gear ring is arranged on the outer side of the focusing tube. The rotation driving mechanism comprises a focusing gear rotatably connected to the outer tube. The focusing gear is meshed with the gear ring on the focusing tube. A rotating wheel is connected to the focusing gear.

3. A compact distance measurement and imaging integrated lens according to claim 2, characterized in that: The focusing gear comprises a gear body and a gear shaft arranged on the gear body, a bearing is arranged on the outer cylinder, the gear shaft is connected to the bearing, and the rotating wheel is connected to the gear shaft.

4. The compact distance measurement and imaging integrated lens according to claim 1, characterized in that: An extension portion is provided at one end of the main tube away from the lens seat, and the extension portion extends along the axial direction of the main tube. A guide groove is formed between adjacent extension portions. A guide protrusion is provided on the outer side of the focusing lens seat, and the guide protrusion is inserted into the guide groove and can slide along the guide groove; an external thread is provided on the guide protrusion, and an internal thread matching the external thread is provided on the inner side of the focusing tube.

5. The compact distance measurement and imaging integrated lens according to claim 4, characterized in that: The extension portion on the main tube is fixedly connected to the outer tube via a third connecting screw.

6. The compact distance measurement and imaging integrated lens according to claim 1, characterized in that: A lens pressing ring is arranged between the spring and the second lens.

7. The compact distance measurement and imaging integrated lens according to claim 1, characterized in that: The lens seat is connected with a lens fixing ring, and the first lens is clamped between the lens fixing ring and the lens seat.

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