WO2021243517A1

WO2021243517A1 - Imaging apparatus, coaxial range-imaging device, and coaxial range-imaging system thereof

Info

Publication number: WO2021243517A1
Application number: PCT/CN2020/093746
Authority: WO
Inventors: 付陆欣; 邢志成
Original assignee: 深圳市瑞尔幸电子有限公司
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-12-09

Abstract

The present invention relates to an imaging apparatus, a coaxial range-imaging device, and a coaxial ranging imaging system thereof. The coaxial range-imaging system comprises a laser-emitting unit, a laser-receiving unit and an imaging unit, wherein the laser-emitting unit is used for emitting a laser beam to a target; the laser-receiving unit is used for receiving the reflected laser beam; and the imaging unit is used for receiving natural light and performing imaging. The laser-emitting unit forms a laser-emitting light path, the laser-receiving unit forms a laser-receiving light path, and the imaging unit forms a natural light observation light path. The axes of the laser-emitting light path, the laser-receiving light path and the natural light observation light path are coaxial, and the axes of the three light paths overlap with one another.

Description

Imaging equipment, common optical axis ranging imaging device and common optical axis ranging imaging system

Technical field

The present invention relates to the field of photoelectric imaging technology, in particular to a common optical axis ranging imaging system, a common optical axis ranging imaging device having the common optical axis ranging imaging system, and an imaging device having the common optical axis ranging imaging device .

Background technique

Common imaging equipment includes laser rangefinders, laser sights, etc., and lasers are usually used to measure and aim targets. Existing laser rangefinders or laser sights can be combined with imaging equipment to aim at the target through the display of the imaging equipment. At present, the combined device of the aiming equipment is often a multi-optical system, which includes the transmitting and receiving optical paths of laser ranging and the imaging optical path. These three optical paths exist independently of each other, and it is difficult to strictly control the three optical paths due to the problem of device placement. In the sense, it achieves a common optical axis, which affects the aiming and ranging effect, and the design of this optical path system makes the appearance of the entire aiming device three optical lenses, and the overall product feel is lacking.

technical problem

In view of this, the present invention aims to provide a common optical axis ranging imaging system that can solve or at least alleviate the above problems, a common optical axis ranging imaging device having the common optical axis ranging imaging system, and a common optical axis ranging imaging device having the common optical axis The imaging equipment of the axonometric imaging device.

Technical solutions

The present invention provides a common optical axis ranging and imaging system, including a laser emitting unit, a laser receiving unit, and an imaging unit. The laser emitting unit is used to emit a laser beam to a target, and the laser receiving unit is used to receive reflections. The imaging unit is used for receiving natural light and imaging, the laser emitting unit forms a laser emitting optical path, the laser receiving unit forms a laser receiving optical path, the imaging unit forms a natural light observation optical path, the laser emitting optical path, The axes of the laser receiving light path and the natural light observation light path are coaxial, and the axes of the three overlap each other.

In some embodiments, the laser emitting unit includes a laser transmitter for emitting a laser beam, a laser emitting mirror for collimating the emitted laser beam, a laser mirror for reflecting the collimated laser beam, and A dichroic mirror that reflects laser light and allows natural light to pass through.

In some embodiments, the laser emitting mirror is located in front of the laser transmitter to form a laser emitting group, the laser reflecting mirror and the dichroic mirror are parallel to each other and form a laser guiding group, and the laser guiding The group is arranged in front of the laser emitting group.

In some embodiments, the laser receiving unit includes a laser receiving mirror for condensing the laser beam turned back from the target, and a laser receiver for receiving the converged laser beam.

In some embodiments, the laser receiving mirror is substantially fan-shaped, including an inner arc surface and an outer arc surface having a common central axis, and the central axis is configured as the axis of the laser receiving optical path.

In some embodiments, the central axis passes through the center of the dichroic mirror, and the laser receiver is located behind the laser receiving mirror for receiving the focused laser beam.

In some embodiments, the imaging unit includes the dichroic mirror, an imaging lens for concentrating natural light, and a sensor for receiving the converged natural light.

In some embodiments, the central axis passes through the center of the dichroic mirror, and the imaging lens and the sensor are sequentially arranged behind the dichroic mirror.

The present invention also provides a common optical axis ranging imaging device, comprising a housing and a common optical axis ranging imaging system and a control module housed in the housing, characterized in that the common optical axis ranging imaging The system is the above-mentioned common optical axis ranging imaging system.

In some embodiments, the common optical axis ranging imaging system is installed in the housing through a positioning housing, and the positioning housing can move relative to the housing, thereby realizing the common optical axis ranging Adjustment of the position of the imaging system relative to the housing.

In some embodiments, the positioning housing includes a positioning part arranged along the axial direction of the housing for installing the common optical axis ranging imaging system and a ball arranged at an end of the positioning part. The ball head is movably engaged in the housing.

In some embodiments, the positioning portion includes a first positioning cavity for receiving and positioning the laser emitting unit, a second positioning cavity for receiving and positioning the laser receiving unit, and a second positioning cavity for receiving and positioning the laser receiving unit. The third positioning cavity of the imaging unit.

In some embodiments, the housing is configured as a hollow body with two axial ends open, and the two axial ends are respectively provided as a first joint part and a second joint part, and the first joint part is used for Connected to the common optical axis ranging imaging system, and the second joint is used to connect the eyepiece module.

The present invention also provides an imaging device capable of aiming, including the above-mentioned co-optical axis ranging imaging system.

The present invention also provides an imaging device capable of distance measurement, including the above-mentioned common optical axis distance measurement imaging system.

Beneficial effect

The common optical axis ranging imaging system according to the present invention simplifies the multi-axis system in the prior art into one axis, so that the transmitting light path, the receiving light path and the imaging light path are truly coaxial, that is, the axes of the three light paths are mutually coaxial. Overlapping improves the accuracy of aiming and ranging and at the same time greatly reduces the volume of the device, so that the integrity of the product is guaranteed.

Description of the drawings

Fig. 1a shows a three-dimensional view of a co-optical axis ranging imaging system according to an embodiment of the present invention, in which three light paths are schematically shown.

Fig. 1b shows a plan view of the co-optical axis ranging imaging system shown in Fig. 1a.

Fig. 1c shows an equivalent optical path diagram of the co-optical axis ranging imaging system shown in Fig. 1a.

Fig. 2 shows a perspective view of a co-optical axis ranging imaging device having the co-axial imaging system shown in Fig. 1a.

Fig. 3 shows an exploded view of the co-optical axis ranging imaging device shown in Fig. 2.

FIG. 4 shows a cross-sectional view of some components of the co-optical axis ranging imaging device shown in FIG. 2.

FIG. 5 shows a perspective view of the positioning housing of the co-optical axis ranging imaging device shown in FIG. 2.

FIG. 6 shows a perspective view of the focal length adjusting member of the common optical axis distance measuring imaging device shown in FIG. 2.

Fig. 7 shows a schematic diagram of an imaging device according to an embodiment of the present invention.

Reference signs: 100-common optical axis ranging imaging device; 1-housing; 101-first housing; 102-second housing; 11-first joint part; 12-second joint part; 13-eyepiece Module; 14-mounting seat; 140-connection groove; 151-first adjustment piece; 152-second adjustment piece; 16-focus adjustment piece; 161-knob; 162-gear set; 621-first bevel gear; 622-second bevel gear; 163-connecting rod; 164-worm; 640-positioning hole; 165-turbine; 651-arc groove; 652-fixed groove; 2-common optical axis ranging imaging system; 21-positioning Housing; 212-stop ring; 215-ball head; 217-ball head seat; 218-ball head surface; 219-positioning part; 220-first positioning cavity; 230-second positioning cavity; 240-third positioning cavity 22-Laser transmitter unit; 221-Laser transmitter; 222-Laser transmitter mirror; 223-Laser mirror; 224-Dichroic mirror; 225-First focusing tube; 23-Laser receiver unit; 231-Laser receiver Mirror; 311-inner arc; 312-outer arc; 232-laser receiver; 234-sleeve; 235-second focusing tube; 24-imaging unit; 241-imaging mirror; 242-sensor; 243-can Moving part; 431-connecting post; 432-sliding groove; A-equivalent laser receiving optical path; B-equivalent natural light observation optical path; C-equivalent laser emitting optical path; 25-positioning piece; 26-positioning groove; 27-block Body; 3-control module; 31-battery; 32-motherboard; 33-display; 34-protection cover; 35-button module; 351-button; 352-button board; 4-target; 300-imaging device; 302 -Shooting device.

Embodiments of the present invention

In the following, the present invention will be described in detail with reference to the accompanying drawings and specific implementations, so as to make the technical solutions and beneficial effects of the present invention clearer. It can be understood that the drawings are only provided for reference and illustration, and are not used to limit the present invention. The dimensions shown in the drawings are only for the convenience of clear description, and do not limit the proportional relationship.

As shown in FIGS. 1 a and 1 b, a common optical axis ranging imaging system 2 according to an embodiment of the present invention includes a laser emitting unit 22, a laser receiving unit 23 and an imaging unit 24. The laser emitting unit 22 is used to emit a required laser beam and transmit the laser beam to the target 4. The laser receiving unit 23 is used to receive the laser beam reflected from the target 4. The imaging unit 24 is used for imaging the natural light observation optical path.

The laser emitting unit 22 includes a laser emitter 221 for emitting a laser beam, a laser emitting mirror 222 for collimating the emitted laser beam, a laser mirror 223 for reflecting the collimated laser beam, and a laser mirror 223 for reflecting the laser beam. And allow natural light to pass through the dichroic mirror 224. The laser emitting mirror 222 is located in front of the laser transmitter 221 to form a laser emitting group, the laser reflecting mirror 223 and the dichroic mirror 224 are parallel to each other and constitute a laser guiding group, and the laser guiding group is arranged In front of the laser emitting group. In this embodiment, the laser mirror 223 can totally reflect the laser beam. The laser transmitter 221 emits laser light, collimated by the laser emitting mirror 222, reaches the laser mirror 223, is then reflected by the laser mirror 223, reaches the dichroic mirror 224, and reaches the target 4 after being reflected again.

In the description of the orientation in this article, the direction adjacent to/towards the target 4 is defined as the front, and the direction away from the target 4 is defined as the rear.

Specifically, the laser emitting unit 22 is configured to emit a laser beam toward the direction of the target 4. The laser emitting mirror 222 is located in front of the laser transmitter 221 and is arranged approximately in a vertical direction, so that the laser beam emitted by the laser transmitter 221 passes through the laser emitting mirror 222 and is collimated into a parallel laser beam. The laser mirror 223 is arranged obliquely in front of the laser emitting mirror 222. In this embodiment, the laser mirror 223 is arranged at an angle of approximately 45 degrees with respect to the vertical, with its upper end facing forward (that is, relatively closer to the target 4), and its lower end facing After (ie relatively far away from target 4). This arrangement enables the laser mirror 223 to convert the horizontal laser beam from the laser emitting mirror 222 into a vertical laser beam to emit upwards. The dichroic mirror 224 is located directly above the laser reflection mirror 223. In this embodiment, the dichroic mirror 224 and the laser mirror 2223 are arranged in parallel, that is, they are arranged at an angle of 45 degrees with respect to the vertical direction. This arrangement enables the dichroic mirror 224 to convert the vertical laser beam from the laser mirror 223 into a horizontal laser beam and shoot it toward the target 4 to reach the target 4.

The laser receiving unit 23 includes a laser receiving mirror 231 for converging the laser beam turned back from the target 4, and a laser receiver 232 for receiving the converged laser beam. In this embodiment, the laser receiver 232 converts the received optical signal into an electrical signal. The laser light emitted by the laser emitting unit 22 is reflected by the target 4 and is collected by the laser receiving mirror 231 to reach the laser receiver 232.

The laser receiving mirror 231 is roughly fan-shaped. The fan-shaped laser receiving mirror 231 includes an inner arc surface 311 and an outer arc surface 312 having a common central axis M. The radius of the inner arc surface 311 is smaller than the radius of the outer arc surface 312. The central axis M is configured as the axis of the laser receiving optical path. The central axis M passes through the center of the dichroic mirror 224. Preferably, the part of the orthographic projection of the dichroic mirror 224 along the central axis M toward the laser receiving mirror 231 does not exceed the inner arc surface 311. In this embodiment, the dichroic mirror 224 is configured as an ellipse, and its orthographic projection along the central axis M is a circle. Preferably, the circle has a radius substantially equal to the radius of the inner arc surface 311. The emitted laser light can pass through the area enclosed by the inner arc surface 311 of the laser receiving mirror 231 to reach the target 4, which avoids the interference of the laser receiving mirror 231 to the emitted laser light emitted by the dichroic mirror 224.

The laser receiving mirror is a 231 convex lens, which is used to receive the laser light reflected from the target 4 and converge the laser light behind it (that is, the side far away from the target 4). The laser receiver 232 is located behind the laser receiving mirror 231 and is used to receive the converged laser beam.

The imaging unit 24 may be a white light imaging unit or a digital imaging unit. In this embodiment, a digital imaging unit is taken as an example to illustrate the imaging unit 24. The imaging unit 24 includes a dichroic mirror 224 that allows natural light to pass through and reflects laser light, an imaging mirror 241 for concentrating the natural light, and a sensor 242 for receiving the converged natural light. Preferably, the imaging lens 241 is a convex lens group. The sensor 242 is an image sensor, and is used to convert the received light signal into an electrical signal. Natural light passes through the dichroic mirror 224, reaches the imaging mirror 241, and is condensed by the imaging mirror 241 to the sensor 242.

Specifically, the dichroic mirror 224, the imaging mirror 241, and the sensor 242 are sequentially arranged along the central axis M of the inner arc 311 of the laser receiving mirror 231, so that natural light reaches the dichroic mirror 224 and passes through the dichroic mirror 224. The mirror 224 reaches the imaging lens 241 located behind the dichroic mirror 224, is converged by the imaging lens 241, and reaches the sensor 242 located behind the imaging lens 241. The arrangement of the dichroic mirror 224 can filter the laser light and only allow natural light to pass through. Therefore, the influence of the laser light on the natural light observation optical path can be avoided.

Preferably, in this embodiment, the imaging unit 24 and the laser emitting unit 22 share a dichroic mirror 224.

As described above, the laser emitting optical path formed by the laser emitting unit 22 reaches the target 4 from the dichroic mirror 224 located on the central axis M of the laser receiving mirror 231. The laser receiving optical path formed by the laser receiving unit 23 is converged and received via the laser receiving mirror 231 and converged to the laser receiver 232 behind it. The natural light observation light formed by the imaging unit 24 is emitted from the target 4 and reaches the imaging mirror 241 and the sensor 242 also located on the central axis M of the laser receiving mirror 231. Therefore, the laser emitting optical path, the laser receiving optical path, and the natural light observation optical path of this embodiment are completely coaxial, that is, the axes of the three optical paths completely overlap.

The above configuration enables the laser receiving optical path, the natural light observation optical path, and the laser emitting optical path to achieve a physical co-optical axis. Fig. 1c schematically shows a schematic diagram of equivalent optical paths of the laser emitting optical path, the laser receiving optical path, and the natural light observation optical path. From the outside to the inside, it is the equivalent laser receiving optical path A, the equivalent natural light observation optical path B (equivalent natural light receiving optical path) and the equivalent laser emitting optical path C. Figures 1a and 1b show a situation where the laser receiving mirror 231 is arranged in a vertical direction. Optionally, as shown in FIG. 1c, according to the needs of the structure, the fan-shaped laser receiving mirror 231 can be arranged at any position around the central axis M (for example, at A1 or A2 in FIG. 1c), so that the three The optical paths are coaxial. In this embodiment, the laser reflecting mirror 223 and the dichroic mirror 224 of the laser emitting unit 22 are parallel to each other. The inclination angle of the laser reflecting mirror 223 and the dichroic mirror 224 relative to the laser receiving mirror 231 of the laser receiving unit 23 can be set according to actual needs.

Specifically, the laser transmitter 221 emits a laser beam with a certain wavelength band (for example, the 905 nm band), passes through the laser emitting mirror 222 and collimates into a parallel laser beam, and then undergoes total reflection on the laser mirror 223. The reflected laser beam reaches the dichroic mirror 224 and then is reflected to the designated target 4. After the laser reaches the designated target 4, it is reflected, and part of the reflected laser returns to the co-optical axis ranging imaging system 2 again, passes through the laser receiving mirror 231 to form a concentrated laser, and then reaches the laser receiver 232 behind the laser receiving mirror 231 , The laser receiver 232 converts the received optical signal into an electrical signal. Among them, since the dichroic mirror 224 is set to allow only natural light to pass through, the laser light cannot pass through the dichroic mirror 224 and enter the area behind the dichroic mirror 224. The natural light on the target 4 passes through the dichroic mirror 224 and is then condensed by the imaging lens 241. The condensed natural light reaches the sensor 242, and the sensor 242 converts the received light signal into an electrical signal. The observed target 4 imaged by natural light is the target actually pointed by the laser (there is no deviation), so the target can be aimed more accurately.

FIG. 2 shows a three-dimensional assembly diagram of a common optical axis ranging imaging device 100 with a common optical axis ranging imaging system 2 according to an embodiment of the present invention. Referring to FIGS. 3 to 5 at the same time, the common optical axis ranging imaging device 100 includes a housing 1, the common optical axis ranging imaging system 2 and a control module 3 housed in the housing 1. The common optical axis ranging imaging system 2 is electrically connected to the control module 3. In this embodiment, the co-optical axis ranging imaging device 100 can be used alone.

The housing 1 is used to assemble and integrate other components of the common optical axis ranging imaging device 100 into a whole. The housing 1 is configured as a hollow body with two axial ends open. The two axial ends of the housing 1 are provided as a first joint 11 and a second joint 12, respectively. The housing 1 includes a first housing 101 and a second housing 102 arranged in the axial direction. Preferably, the first housing 101 and the second housing 102 are connected by threads. The first joint 11 is provided on the first housing 101. The second joint 12 is disposed on the second housing 102 and is used to connect and fix the eyepiece module 13. Optionally, the second joint 12 may be used to connect the co-optical axis ranging imaging device 100 to the front of the eyepiece of an existing imaging device. Preferably, both the first joint 11 and the second joint 12 are provided with internal threads. In addition, the outer bottom of the second housing 102 is provided with a mounting seat 14 for fixing the co-optical axis ranging imaging device 100 to an imaging device. In this embodiment, the mounting base 14 is provided with a connecting groove 140, and the connecting groove 140 is engaged with a corresponding part of the imaging device to install the co-optical axis ranging imaging device 100 on the shooting device.

The second housing 102 of the housing 1 is also provided with a plurality of adjusting members for adjusting the internal components of the common optical axis ranging imaging device 100. In this embodiment, the plurality of adjusting members include a first adjusting member 151, a second adjusting member 152, and a focal length adjusting member 16. The first adjusting member 151 is used for distance correction, the second adjusting member 152 is used for wind deviation correction, and the focal length adjusting member 16 is used for adjusting the focal length of the co-optical axis ranging imaging system 2. Optionally, the number and positions of the adjusting members arranged on the housing 1 can be set according to actual needs. In this embodiment, the first adjusting member 151 is a distance adjusting knob, and the second adjusting member 152 is a wind direction adjusting knob. The first adjusting member 151 and the second adjusting member 152 may adopt existing adjusting members (for example, a knob adjusting member including an adjusting screw and an adjusting spring).

In this embodiment, the common optical axis ranging imaging system 2 is installed on the first housing 101 of the housing through a positioning housing 21. The position of the positioning housing 21 relative to the position installed on the housing 1 can be adjusted by the first adjusting member 151 and the second adjusting member 152 installed on the second housing 102 of the housing 1. The positioning housing 21 includes a positioning portion 219 provided along the axial direction of the housing 1 for installing the co-optical axis ranging imaging system 2 and a ball head 215 provided at the end of the positioning portion 219. In this embodiment, in order to facilitate adjustment of the position of the positioning housing 21 relative to the housing 1, the first housing 101 is provided with a ball head seat 217 at a position corresponding to the ball head 215. After the positioning housing 21 with the ball head 215 is installed in the first housing 101, a stop ring 212 provided with an external thread is connected in the first joint 11 to prevent the positioning housing 21 from being separated from the first housing 101 . The stop ring 212 is provided as a ball head surface 218 adjacent to the inner side of the ball head seat 217, and the ball head seat 217 and the ball head surface 218 engage the ball head 215. After the positioning housing 21 is installed in the housing 1, the positioning housing 21 is prevented from moving in the axial direction of the housing 1 by the stop ring 212, and the ball head 215 can go around the ball head in the ball head seat 217 and the ball head surface 218 The center point of 215 moves, so that the position of the co-optical axis ranging imaging system 2 relative to the housing 1 is adjusted under the action of the first adjusting member 151 and the second adjusting member 152. In this embodiment, the ball head 215 of the positioning housing 21 is provided with a positioning groove 26 along the axial direction of the housing 1. Preferably, the length of the positioning groove 26 in the axial direction of the housing 1 is equal to the length of the ball head 215 in this direction. The first housing 101 of the housing 1 is provided with a positioning member 1 corresponding to the positioning groove 26. The positioning member 1 passes through the first housing 101 and engages in the positioning groove 26 to prevent the ball head 215 from rotating along its own circumference.

The positioning housing 21 further includes a block 27 connected at an end of the positioning portion 219 away from the head. The first adjusting member 151 and the second adjusting member 152 realize the above-mentioned adjustment by adjusting the position of the block 27 of the positioning housing 21 relative to the housing 1. The force of each screw of the first adjusting member 151 and the second adjusting member 152 acts on the block 27, so that the free movement of the ball head 215 around its center point is set to be controllable.

The positioning portion 219 of the positioning housing 21 includes a first positioning cavity 220 for receiving and positioning the laser emitting unit 22, a second positioning cavity 230 for receiving and positioning the laser receiving unit 23, and a second positioning cavity 230 for receiving and positioning the imaging unit 24. The third positioning cavity 240. The positions and shapes of the first positioning cavity 220, the second positioning cavity 230, and the third positioning cavity 240 on the positioning portion 219 can be set according to the settings of the respective corresponding units of the co-optical axis ranging imaging system 2. In this embodiment, the third positioning cavity 240 is disposed between the first positioning cavity 220 and the second positioning cavity 230.

Specifically, a laser mirror 223, a laser emitting mirror 222, and a laser transmitter 221 are sequentially arranged in the first positioning cavity 220 along the axial direction of the first positioning cavity 220. The dichroic mirror 224 is arranged above the laser reflection mirror 223, and the dichroic mirror 224 is arranged at an axial end of the third positioning cavity 240. An imaging lens 241 and a sensor 242 are sequentially arranged in the third positioning cavity 240 along its axial direction. A laser receiving mirror 231 and a laser receiver 232 are sequentially arranged in the second positioning cavity 230 along its axial direction. In addition, in front of the dichroic mirror 224 and below the laser receiving mirror 231, a hollow cylindrical sleeve 234 is installed in the positioning housing 21. Preferably, the projection of the dichroic mirror 224 in the vertical plane is located in the sleeve 234, that is, the outer radius of the sleeve 234 is approximately equal to the radius of the inner arc surface 311 of the laser receiving mirror. The sleeve 234 can prevent the laser receiving mirror 231 from interfering with the emitted laser light reflected from the dichroic mirror 224. The emitted laser light can pass through the sleeve 234 to reach the target 4, and the natural light from the target 4 passes through the sleeve 234 to reach the dichroic mirror 224.

In this embodiment, a first focusing tube 225 is further provided in front of the laser transmitter so that the manufacturer can adjust the position of the laser transmitter 221 in the first positioning cavity 220 to adjust the focal length of the laser transmitter unit 22. Also preferably, a second focusing tube 235 is also provided in front of the laser receiver 232 so that the manufacturer can adjust the position of the laser receiver 232 in the second positioning cavity 230 to adjust the focal length of the laser receiving unit 23.

The imaging lens 241 of the imaging unit 24 is arranged in the third positioning cavity 240 via a movable element 243. The imaging lens 241 is arranged in the movable element 243, and the movable element 243 can move relative to the third positioning cavity 240 along the axial direction of the third positioning cavity 240. A sliding groove 432 corresponding to the movable element 243 is provided on the outer side of the positioning housing 21. A connecting post 431 of the movable element 243 protrudes from the sliding groove 432. The focal length adjusting member 16 adjusts the focal length of the imaging unit 24 through the connecting column 431. Referring to FIG. 6 at the same time, the focal length adjusting member 16 includes a knob 161, a gear set 162, a connecting rod 163, a worm 164 and a turbine 165. The gear set 162 includes a first bevel gear 621 and a second bevel gear 622 that mesh with each other, and are used to change the transmission direction of the knob 161. The first bevel gear 621 rotates under the control of the knob 161. The second bevel gear 622 meshed with the first bevel gear 621 is connected to one end of the connecting rod 163. The other end of the connecting rod 163 is connected to a worm 164. The worm 164 meshes with the turbine 165 mounted on the positioning housing 21. In this embodiment, a positioning hole 640 is provided at a position of the positioning housing 21 corresponding to the worm 164 to receive the worm 164. The movable element 243 moves under the action of the turbine 165. In this embodiment, a fixing groove 652 is provided at a position of the positioning housing 21 corresponding to the turbine 165 to receive the turbine 165. Preferably, the turbine 165 is engaged with the worm 164 in the positioning hole 640. In this embodiment, an arc groove 651 with a variable radius is provided inside the turbine 165. The connecting post 431 of the movable element 243 is movably engaged in the arc-shaped groove 651, so that as the turbine 165 rotates, the connecting post 431 drives the movable element 243 to move under the action of the arc-shaped groove 651, thereby achieving The focal length of the imaging lens 241 arranged in the movable member 243 is adjusted. In addition, the data of the co-optical axis ranging imaging device 100 is directly used to adjust the focal length of the imaging lens 241, and the ranging value of the laser ranging is fully used as the parameter for adjusting the focal length of the imaging lens 241, so that the ranging data can be sufficiently obtained. Utilization is faster and more accurate, especially when the magnification needs to be adjusted, the focal length can be adjusted quickly and accordingly, which greatly improves the operating efficiency of the device. In this embodiment, the connecting rod 163 is a soft rotating shaft, which can realize that the worm 164 only rotates in the positioning hole 640 to act on the turbine 165.

Returning to FIGS. 2 and 3, the common optical axis ranging imaging system 2 is electrically connected to the control module 3. The control module 3 controls the emission of the laser, and receives the electrical signal from the sensor 242 and the electrical signal from the laser receiver 232. The control module 3 includes a battery 31, a main board 32 and a display 33. In this embodiment, the battery 31 is installed above the mounting base 14 for powering other components. The main board 32 is electrically connected to the laser transmitter 221, the laser receiver 232, the sensor 242, and the display 33 through connecting wires. Optionally, one or more of the following may be provided on the main board 32: an orientation sensor, an angle sensor, a temperature sensor, a humidity sensor, an atmospheric pressure sensor, a global positioning system, a wireless transmission module, and so on. In an alternative solution, the wireless transmission module can transmit the laser data and the sensing data of other sensors to the terminal device, and the terminal device can directly display the measurement result on its display screen after processing. In addition, the main board 32 is also provided with an external interface, and the external interface can be electrically connected with an external imaging device for data transmission.

In addition, the control module 3 also includes a button module 35 electrically connected to the main board 32. The key module 35 includes a key board 352 arranged on the housing 1 and a key 351 installed on the key board 352. After aiming at the target, trigger the button 351 to drive the main board 32 to generate a signal. The laser transmitter 221 emits a laser beam after receiving the signal. After the laser beam passes through the optical element, it forms a ranging laser and is reflected back to the target. The laser receiver 232 will receive it. The optical signal is converted into an electrical signal, and the electrical signal is transmitted to the main board 32. The main board 32 processes these electrical signals, and then transmits the processed data to the display 33 to directly display the measurement results. Optionally, electrical signals from the orientation sensor, angle sensor, temperature sensor, humidity sensor, atmospheric pressure sensor, and wind speed and direction sensor are also transmitted to the main board 32 for processing, and the processed result can also be displayed on the display 33. Optionally, the laser ranging data of the common optical axis ranging imaging device 100 and the measurement data of the sensor 242 can also be transmitted to the back-end imaging device through the external interface of the main board 32 or the wireless transmission module for processing, and the processed measurement results can be processed. Directly displayed on the display screen of the imaging device. That is to say, the common optical axis ranging imaging device 100 can process the data and display the measurement result by itself, or transmit the data to the back-end imaging device for processing and the imaging device can display the measurement result. In this embodiment, a protective cover 34 is also provided on the housing 1 to protect the external interface, so as to prevent impurities from entering the inside of the common optical axis ranging imaging device 100.

The common optical axis ranging imaging device 100 of the present invention further includes an eyepiece module 13 mounted on the housing 1 facing the display 33. In this embodiment, the eyepiece module 13 is arranged away from the common optical axis ranging imaging system 2.

FIG. 7 shows an imaging device 300 having the common optical axis ranging imaging device 100 of the present invention, and the imaging device 300 has an aiming or ranging function. The imaging device 300 may be a laser sight, a laser rangefinder, a night vision device, or the like. In addition, the sighting device of the present invention further includes a shooting device 302, and the common optical axis ranging imaging device 100 is installed on the shooting device 302.

The above are only the preferred specific embodiments of the present invention. The protection scope of the present invention is not limited to the above-listed examples. Any person skilled in the art can obviously obtain the technology within the technical scope disclosed in the present invention. Simple changes or equivalent replacements of the solutions fall within the protection scope of the present invention.

Claims

A common optical axis ranging imaging system includes a laser emitting unit, a laser receiving unit, and an imaging unit. The laser emitting unit is used to emit a laser beam to a target, and the laser receiving unit is used to receive the reflected laser beam, The imaging unit is used for receiving natural light and imaging, the laser emitting unit forms a laser emitting optical path, the laser receiving unit forms a laser receiving optical path, and the imaging unit forms a natural light observation optical path, characterized in that: the laser emitting optical path, The axes of the laser receiving light path and the natural light observation light path are coaxial, and the axes of the three overlap each other.
The co-optical axis ranging imaging system according to claim 1, wherein the laser emitting unit comprises a laser transmitter for emitting a laser beam, a laser emitting mirror for collimating the emitted laser beam, and A laser mirror that reflects the collimated laser beam, and a dichroic mirror that reflects the laser light and allows natural light to pass through.
The co-optical axis ranging imaging system according to claim 2, wherein the laser emitting mirror is located in front of the laser emitting device to form a laser emitting group, and the laser reflecting mirror and the dichroic The mirrors are parallel to each other and form a laser guide group, which is arranged in front of the laser emitting group.
The co-optical axis ranging imaging system according to claim 2, wherein the laser receiving unit comprises a laser receiving mirror for condensing the laser beam turned back from the target, and a laser receiving mirror for receiving the converged laser beam Laser receiver.
The co-optical axis ranging imaging system according to claim 4, wherein the laser receiving mirror is substantially in the shape of a fan ring, and includes an inner arc surface and an outer arc surface having a common central axis, and the central axis is configured Is the axis of the laser receiving optical path.
The co-optical axis ranging imaging system according to claim 5, wherein the central axis passes through the center of the dichroic mirror, and the laser receiver is located behind the laser receiving mirror for Receive the focused laser beam.
The co-optical axis ranging imaging system according to claim 5, wherein the imaging unit comprises the dichroic mirror, an imaging lens for concentrating natural light, and a sensor for receiving the converged natural light.
8. The co-optical axis ranging imaging system according to claim 7, wherein the central axis passes through the center of the dichroic mirror, and the imaging lens and the sensor are sequentially arranged behind the dichroic mirror.
A common optical axis ranging imaging device, comprising a housing and a common optical axis ranging imaging system and a control module housed in the housing, characterized in that the common optical axis ranging imaging system is according to claims The common optical axis ranging imaging system described in any one of 1 to 8.
The co-optical axis ranging imaging device according to claim 9, wherein the co-optical axis ranging imaging system is installed in the housing through a positioning housing, and the positioning housing can be relative to the The housing moves, so as to realize the adjustment of the position of the co-optical axis ranging imaging system relative to the housing.
The co-optical axis ranging and imaging device according to claim 10, wherein the positioning housing includes a positioning portion arranged along the axial direction of the housing for installing the co-optical axis ranging and imaging system And a ball head provided at the end of the positioning part, the ball head being movably engaged in the housing.
The co-optical axis ranging imaging device according to claim 11, wherein the positioning part comprises a first positioning cavity for accommodating and positioning the laser emitting unit, and for accommodating and positioning the laser receiving unit The second positioning cavity and the third positioning cavity for receiving and positioning the imaging unit.
The co-optical axis ranging imaging device according to claim 9, wherein the housing is configured as a hollow body with two axial ends open, and the two axial ends are respectively provided as a first joint and The second joint part, the first joint part is used to connect the co-optical axis ranging imaging system, and the second joint part is used to connect the eyepiece module.
An imaging device capable of aiming, characterized by comprising the common optical axis ranging imaging system according to any one of claims 1 to 8.
An imaging device capable of distance measurement, characterized by comprising the common optical axis distance measurement imaging system according to any one of claims 1 to 8.