Digital imaging observing and aiming equipment

Abstract

According to the scheme, the digital imaging observing and aiming equipment comprises an objective lens end which is detachably arranged at the front end of a tubular main body; a focusing module and a focusing knob matched with the focusing module are arranged in the middle of the tubular body, an imaging detector connected with the focusing module is arranged in the front end of the tubular body, the focusing module is driven by rotating the focusing knob, the imaging detector is driven to be away from or close to the optical imaging lens set at the objective lens end in the tubular body, and therefore compensation focusing is achieved. The focusing knob supports stepping action; and the eyepiece end is arranged at the tail end of the tubular main body. Therefore, a focusing structure can be moved from the front end of the tubular column body to a position close to a user, the user can operate conveniently, quickly and comfortably, irrationality of weight distribution is improved to a great extent, observation comfort is greatly improved, and the whole machine shock resistance and repeated operation precision of equipment can be improved through a focusing knob stepping function.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic imaging aiming and sighting, and in particular to a digital imaging aiming and sighting device. Background Art

[0002] Traditional handheld electronic imaging aiming devices (such as thermal imaging gun sights) usually adopt a three-section architecture, including an optical imaging lens at the front end, a functional integrated body in the middle section, and a display eyepiece assembly at the rear end. The optical imaging lens part is mainly composed of an optical lens group, a lens barrel fixing structure, and a focus compensation mechanism. The focus compensation mechanism compensates for the imaging deviation caused by changes in the distance to the target object and fluctuations in ambient temperature by axially moving a specific lens group or the entire optical system. The body part integrates core functional units such as photoelectric conversion detectors, digital image processing circuit boards, power supply systems, and control modules. The display eyepiece assembly includes a digital display screen and an optical magnifying eyepiece for the final presentation of image information.

[0003] The existing technical solutions have significant structural defects: first, the focus compensation mechanism is arranged inside the front optical system, and the operation interface is located in the front area far away from the user. In the narrow space use scenario such as firearms, the focusing operation has obvious accessibility barriers. Secondly, the addition of a focusing mechanism to the front optical system significantly increases the mechanical complexity of this part, which not only causes the weight to be concentrated in the front (the center of mass of the whole machine moves forward), but also forces the outer diameter of the optical lens barrel to increase. In particular, grooved parts such as the focusing knob will form visual obstructions, seriously affecting the integrity of the aiming field of view. In addition, due to the use environment of the sight, it is determined that it is frequently subjected to large impact forces. The insufficient locking force of the focusing mechanism can easily cause the motion mechanism to slip, that is, the phenomenon of out-of-focus. In addition, the close coupling layout of the temperature-sensitive element and the focusing mechanism is easily affected by sudden changes in the external environment, resulting in a decrease in compensation accuracy.

[0004] The above defects directly affect the human-computer interaction performance and observation stability of the equipment. Especially in high-dynamic outdoor sports scenes, it is difficult for operators to quickly complete precise focusing, and the weight problem of the equipment being heavy at the front and light at the back exacerbates the fatigue of handheld use. Therefore, a new structural layout solution is urgently needed to solve the problems of unreasonable spatial layout, low human-computer interaction efficiency and insufficient mechanical stability in traditional designs. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and provide a digital imaging aiming and viewing device, which integrates a focusing module in the middle of a tubular body and uses the axial displacement of an imaging detector to replace the traditional optical lens movement method to achieve "electronic-mechanical" collaborative focusing, thereby improving the efficiency of human-computer interaction and optimizing the weight distribution of the entire machine.

[0006] In order to achieve the above application purpose, the present invention adopts the following technical solution: a digital imaging sighting device comprises: An objective lens end is detachably arranged at the front end of the tubular body; The tubular body has a focusing module and a focusing knob matched therewith in the middle, and an imaging detector connected to the focusing module is provided inside the front end. The focusing module is driven by rotating the focusing knob to drive the imaging detector away from or close to the optical imaging lens group at the objective end in the tubular column, thereby achieving compensation focusing; The eyepiece end is arranged at the rear end of the tubular body.

[0007] Furthermore, the objective lens end includes an objective lens part, an objective lens cover detachably arranged at the front end of the objective lens part, a locking ring and a limiting ring detachably arranged at the rear end of the objective lens part, and the objective lens part is installed at the front end of the tubular body through the locking ring and the limiting ring.

[0008] Furthermore, a mounting shaft is provided on the objective lens part, and a small diameter hole matching with the mounting shaft and a large diameter hole matching with the limiting ring are provided on the locking ring. The outer diameter of the limiting ring is smaller than the large diameter hole of the locking ring and larger than the small diameter hole. The mounting shaft passes through the locking ring and is connected with the limiting ring, and the locking ring is threadedly matched with the front end of the tubular body.

[0009] Furthermore, the front end of the tubular column cooperates with the concave and convex stopper of the limiting ring to achieve radial positioning of the limiting ring.

[0010] Furthermore, a first menu controller is provided on the focusing knob, and the first menu controller is communicatively connected with the circuit board group in the tubular body. By rotating the first menu controller, an electrical signal is sent to the circuit board group to realize menu or function switching.

[0011] Furthermore, the first menu controller is a hand wheel structure, which is installed on the top of the focus knob and can rotate independently of the focus knob.

[0012] Furthermore, the focusing module includes a driving cylinder meshed with the focusing driving gear at the bottom of the focusing knob, a driving head threadedly matched with the driving cylinder, a guide slide groove bracket for guiding the driving head, and a limit pressure ring for limiting the stroke of the driving head. The outer ring of the driving head is provided with a sliding portion that matches the guide groove on the guide slide groove bracket, the sliding portion can be blocked by the limit pressure ring, and the end of the driving head away from the driving cylinder extends out of the limit pressure ring to connect to the imaging detector, so as to be able to drive the imaging detector away from or close to the optical imaging lens group at the objective end.

[0013] Furthermore, the imaging detector is mounted on an end of the driving head away from the driving cylinder through a detector fixing seat.

[0014] Furthermore, a second menu controller and a control button are provided on the eyepiece end, and the second menu controller and the control button are both communicatively connected with the circuit board group in the tubular body. Menu interaction is achieved by rotating the first menu control and pressing the control button to send an electrical signal to the circuit board group.

[0015] Furthermore, a damping stepping mechanism is provided on the focusing knob, which includes a stepping pressure ring, a circle of damping positioning holes provided on the stepping pressure ring and one or more groups of elastic damping balls provided on the focusing knob. The elastic damping ball is supported by an elastic reset member so that every time the focusing knob rotates a certain angle, the elastic damping ball can enter from the current damping positioning hole into the next damping positioning hole to achieve the damping feel of the adjusting hand wheel.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Convenient focusing operation: The present invention arranges the focusing module and the focusing knob in the middle of the tubular body. Compared with the traditional method of placing the focusing compensation mechanism on the lens optical system far away from the operator, the user can perform the focusing operation more conveniently and quickly. In the ever-changing outdoor sports scenes, the timeliness of capturing the target is greatly improved, and the best observation or aiming opportunity will not be easily missed.

[0017] 2. Optimize the equipment structure: By setting the focusing-related components in the middle of the main body, it is avoided to add a focusing mechanism to the front optical system, effectively reducing the weight of the front part of the equipment, reducing the size, and reducing the impact of the protruding control knob on the overall portability of the equipment. It will not interfere with target observation, and significantly improves the practicality of the equipment in complex outdoor environments.

[0018] 3. Convenient functional interaction: The first menu controller is set on the focusing knob, and the second menu controller and control button are on the eyepiece end, all of which are connected to the circuit board group in the tubular body, realizing convenient menu or function switching and menu interaction. Compared with the operation mode of traditional devices, it greatly improves the user operation experience and meets the needs of fast operation in different scenarios. In addition, the focusing knob is also integrated with a damping stepping mechanism, which can make the positioning more accurate during the focusing operation and effectively prevent the problem of impact focus displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 2 is a schematic structural diagram of an objective lens portion according to an embodiment of the present invention; Figure 3 is a schematic diagram of the installation of the objective lens part of an embodiment of the present invention; Figure 4 is a cross-sectional view of a focusing module according to an embodiment of the present invention; Figure 5is an exploded view of a focusing module according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the installation of a focusing knob according to an embodiment of the present invention.

[0020] In the figure, 100, objective lens end; 110, objective lens part; 111, optical imaging lens group; 112, mounting shaft; 120, objective lens cover; 130, locking ring; 131, small diameter hole; 132, large diameter hole; 140, limit ring; 141, protrusion; 200, tubular body; 210, groove part; 220, focusing knob; 221, stepping pressure ring; 222, damping positioning hole; 223, stainless steel ball; 224, spring; 225, focusing knob pressure ring; 226, adjustment Focus driving gear; 227, fixed bracket; 228, encoder rotating bracket; 229, first menu controller; 230, driving cylinder; 231, driving cylinder pressure ring; 240, driving head; 241, sliding part; 250, guide slide bracket; 251, guide slide; 260, limit pressure ring; 270, detector fixing seat; 280, CMOS imaging detector; 290, main control circuit board; 300, eyepiece end; 310, control button; 320, second menu controller. DETAILED DESCRIPTION

[0021] 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.

[0022] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the accompanying 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 operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0023] The traditional solution integrates the focusing mechanism into the front-end optical system, which causes the operating interface to be far away from the user, the front structure to be bloated and affects the integrity of the field of view. At the same time, there is a problem of insufficient coordination between optical compensation and the electronic imaging system.

[0024] Based on this, the present invention integrates the focusing module in the middle of the tubular body 200 and uses the axial displacement of the imaging detector 280 to replace the traditional optical lens movement method to achieve "electronic-mechanical" collaborative focusing, thereby improving the human-computer interaction efficiency and optimizing the weight distribution of the whole machine.

[0025] Specifically, Figure 1-Figure 6 As shown, the digital imaging sighting device comprises an objective lens end 100, a tubular body 200 and an eyepiece end 300, which are sequentially connected along the optical axis to form an integrated observation optical path. The following is a detailed description of each component: 1) Objective lens end 100 structure like Figure 1-Figure 3 As shown, the objective lens end 100 adopts a modular detachable design, including: Objective lens part 110: an optical imaging lens group 111 is fixedly installed inside, and the lens group can be a combination of an achromatic doublet lens and a field lens, which is used to receive target light and form an initial optical image; Objective lens cover 120: detachably mounted on the front end of the objective lens portion 110 by means of threaded connection, to prevent dust from contaminating the optical lens; The locking ring 130 is disposed at the rear end of the objective lens 110, and its inner hole is designed as a stepped structure, specifically including: Small diameter hole 131: the aperture has a clearance match with the mounting shaft 112 of the objective lens portion 110 (e.g., the clearance is ≤ 0.05 mm); Large diameter hole 132: the hole diameter is larger than the outer diameter of the limiting ring 140, so that the limiting ring 140 can move freely in the axial direction; The limiting ring 140 is fixed to the inner wall of the front end of the tubular body 200 by means of a countersunk screw, and together with the locking ring 130 constitutes an axial positioning mechanism of the objective lens part 110 .

[0026] During installation, the mounting shaft 112 of the objective lens portion 110 passes through the small diameter hole 131 of the locking ring 130 and the limiting ring 140 in sequence. The outer diameter of the limiting ring 140 is designed to be larger than the aperture of the small diameter hole 131 but smaller than the aperture of the large diameter hole 132, thereby limiting the radial displacement of the objective lens portion 110. The locking ring 130 is screwed to the front end of the tubular body 200 through M30×1.5 fine pitch threads, and the groove portion 210 at the front end of the tubular body 200 cooperates with the protrusion 141 of the limiting ring 140 to achieve precise radial positioning of the objective lens end 110.

[0027] 2) Focusing mechanism of the tubular body 200 like Figure 4-Figure 6 As shown, a focusing module is integrated in the middle of the tubular body 200, and its core components include: Stepping pressure ring 221: as a key part of the damping stepping mechanism installed on the focusing knob 200, it is arranged above the focusing knob 200 and is in the shape of a hollow ring, with a plurality of damping positioning holes 222 evenly spaced around the circumference; Focus knob 220: The outer surface is provided with anti-slip grooves (groove depth 0.5mm, spacing 2mm); the focusing knob 220, stepping pressure ring 221, focusing knob pressure ring 225, focusing drive gear 226, fixed bracket 227 and damping stepping mechanism constitute the main adjustment structure of the adjustment knob mechanism. Among them, the focusing knob pressure ring 225 is inserted into the focusing drive gear 226, and then the focusing knob 220 is installed. The focusing knob 220 and the focusing drive gear 226 are interlocked into a whole (the thread is prevented from loosening by thread glue), and it can rotate around the focusing knob pressure ring 225. The above whole is inserted into the fixed bracket 227 through the inner circle of the focusing drive gear 226 to achieve axial precise positioning. When the whole machine is installed, the focusing knob pressure ring 225 is locked with the mounting hole of the tubular body 200 by thread to achieve fixation.

[0028] Driving cylinder 230: The outer wall of the rear end is provided with a gear structure meshing with the focusing driving gear 226, and the material can be POM engineering plastic to reduce the friction coefficient. The front end is a sleeve structure, and the whole is a hollow structure. The rear end of the driving cylinder 230 is also provided with a driving cylinder pressing ring 231; Driving head 240: Four rectangular sliding parts 241 (size 3mm×5mm) with threads are evenly spaced on the outer circumference and are screwed to the driving cylinder 230 and slidably matched with the guide slide groove 251 on the guide slide groove bracket 250; The limiting pressure ring 260 is fixed to one end of the guide slide bracket 250 by means of a retaining spring or a screw connection, and its inner hole diameter is smaller than the maximum outer diameter of the sliding part 241 of the driving head 240, and is used to limit the axial stroke of the driving head 240 (such as the maximum stroke ±15mm).

[0029] During the focusing operation, the focusing knob 220 is rotated to drive the gear meshing transmission, which drives the driving cylinder 230 to rotate and converts it into a linear motion of the driving head 240. The front end of the driving head 240 is connected to the detector fixing seat 270 by screws, on which a CMOS imaging detector 280 (pixel size 3.45μm) is installed. When the driving head 240 moves along the guide slide 251, the imaging detector 280 is displaced in the optical axis direction, and the electronic-mechanical coordinated compensation for the change of object distance and temperature drift is realized by changing the distance between it and the optical imaging lens group 111.

[0030] 3) Damping stepping mechanism The focusing knob 220 is provided with a damping positioning structure, which specifically includes: Stepping pressure ring 221; Damping positioning holes 222: 24 Φ2mm blind holes are evenly distributed along the circumference of the stepping pressure ring 221, and the hole depth is 3mm; Elastic damping ball: A stainless steel ball 223 (Φ2.5 mm) and a spring 224 (wire diameter 0.3 mm, free length 5 mm) are combined and installed in the countersunk hole of the focusing knob 220 .

[0031] When the focus knob 220 rotates 15° (corresponding to a positioning hole spacing), the stainless steel ball 223 is embedded in the next blind hole (damping positioning hole 222) under the pressure of the spring 224, generating obvious hand feedback and preventing accidental displacement. This structure can achieve a focusing accuracy of ±0.02mm without shifting the focus.

[0032] 4) 300mm interactive system on the eyepiece The eyepiece end 300 is provided with: OLED display screen: if the resolution is 1024×768, it is connected to the main control circuit board 290 through the FPC cable; The second menu controller 320: adopts a rotary encoder structure, with a rotation angle resolution of 1° and can switch the magnification; Control buttons 310: including confirmation button, return button and mode switch button, with a key travel of 1.2 mm and a trigger force of 1.5 N.

[0033] The first menu controller 229 (handwheel encoder) is integrated on the top of the focus knob 220 through the encoder rotating bracket 228. Its rotation axis is coaxially arranged with the focus knob 220 but moves independently. The wire passes through the focus knob 220 and is connected to the main control circuit board 290 inside the tubular body 200. When the user presses the handwheel vertically, the mode switching signal is triggered; rotating the handwheel generates a pulse signal, which is transmitted to the main control circuit board 290 through the IC bus to achieve parameter adjustment such as white balance and pseudo color mode.

[0034] Example 2: Implementation method for rapid replacement of objective lens end 100 According to different observation scene requirements, the objective lens part 110 can be replaced with modules with different focal lengths: Remove the locking ring 130 and pull out the original objective lens part axially forward; Insert the mounting shaft 112 of the new objective lens into the limiting ring 140 at the front end of the tubular body 200; The locking ring 130 is rotated until the threads are fully engaged (torque 2 N·m), and the end surface of the objective lens is pressed by the limiting ring 140 .

[0035] After replacement, the main control circuit board 290 can ensure imaging consistency by automatically identifying the ID chip (RFID tag) of the objective lens part and loading the corresponding distortion correction parameters.

[0036] The parts not described in detail in the present invention are prior art, so the present invention does not describe them in detail.

[0037] 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.

[0038] Although more professional terms are used in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

[0039] 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 the present invention fall within the protection scope of the present invention.

Claims

1. A digital imaging sighting device, characterized in that: include: An objective lens end is detachably arranged at the front end of the tubular body; A tubular body, with a focusing module and a focusing knob matched therewith in the middle, and an imaging detector connected to the focusing module provided inside the front end, and the focusing module is driven by rotating the focusing knob to drive the imaging detector away from or close to the optical imaging lens group at the objective lens end in the tubular column, thereby achieving compensation focusing; The eyepiece end is arranged at the rear end of the tubular body.

2. A digital imaging sighting device according to claim 1, characterized in that: The objective lens end includes an objective lens part, an objective lens cover detachably arranged at the front end of the objective lens part, a locking ring and a limiting ring detachably arranged at the rear end of the objective lens part, and the objective lens part is installed at the front end of the tubular body through the locking ring and the limiting ring.

3. A digital imaging sighting device according to claim 2, characterized in that: The objective lens portion is provided with a mounting shaft, the locking ring is provided with a small diameter hole matched with the mounting shaft and a large diameter hole matched with the limiting ring, the outer diameter of the limiting ring is smaller than the large diameter hole of the locking ring and larger than the small diameter hole, the mounting shaft passes through the locking ring and is connected with the limiting ring, and the locking ring is threadedly matched with the front end of the tubular body.

4. A digital imaging sighting device according to claim 3, characterized in that: The front end of the tubular column cooperates with the concave and convex stopper of the limiting ring to achieve radial positioning of the limiting ring.

5. A digital imaging sighting device according to claim 1, characterized in that: The focusing knob is also provided with a first menu controller, which is in communication connection with the circuit board group in the tubular body. By rotating the first menu controller, an electrical signal is sent to the circuit board group to realize menu or function switching.

6. A digital imaging sighting device according to claim 5, characterized in that: The first menu controller is a hand wheel structure, which is installed on the top of the focus knob and can rotate independently of the focus knob.

7. A digital imaging sighting device according to claim 1, characterized in that: The focusing module includes a driving cylinder meshed with the focusing driving gear at the bottom of the focusing knob, a driving head threadedly matched with the driving cylinder, a guide slide groove bracket for guiding the driving head, and a limit pressure ring for limiting the stroke of the driving head. The outer ring of the driving head is provided with a sliding portion matched with the guide groove on the guide slide groove bracket, and the sliding portion can be blocked by the limit pressure ring, and the end of the driving head away from the driving cylinder extends out of the limit pressure ring to connect with the imaging detector, so as to be able to drive the imaging detector away from or close to the optical imaging lens group at the objective lens end.

8. A digital imaging sighting device according to claim 7, characterized in that: The imaging detector is mounted on an end of the driving head away from the driving cylinder through a detector fixing seat.

9. A digital imaging sighting device according to any one of claims 1 to 8, characterized in that: A second menu controller and a control button are provided on the eyepiece end, and both the second menu controller and the control button are communicatively connected to the circuit board group in the tubular body. Menu interaction is achieved by rotating the first menu control and pressing the control button to send an electrical signal to the circuit board group.

10. A digital imaging sighting device according to any one of claims 1 to 8, characterized in that: The focusing knob is provided with a damping stepping mechanism, which includes a stepping pressure ring, a circle of damping positioning holes provided on the stepping pressure ring and one or more groups of elastic damping balls provided on the focusing knob. The elastic damping balls are supported by elastic reset members so that every time the focusing knob rotates a certain angle, the elastic damping balls can enter from the current damping positioning hole into the next damping positioning hole to achieve the damping feel of the adjusting hand wheel.

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