Patent Publication Number: US-2023144958-A1

Title: Shooting device, sighting apparatus, imaging rangefinder and adjusting method thereof

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a Continuation Application of PCT Application No. PCT/CN2020/105983, filed on Jul. 30, 2020, the entire contents of which are hereby incorporated by reference. 
     TECHNICAL FIELD 
     The present disclosure relates to the field of photoelectric technology, and particularly to a shooting device, sighting apparatus, imaging rangefinder and adjusting method thereof. 
     DESCRIPTION OF THE PRIOR ART 
     A sighting apparatus is used as an indispensable auxiliary tool for a shooting device such as a bow, an arrow, a gun, etc., which can effectively help a user to improve shooting accuracy. However, a common optical sighting apparatus estimates a distance of a target by means of scribe lines on a reticle of the sighting apparatus, which has great subjectivity and limitation, so that it is difficult to avoid errors. In recent years, with the development of laser technology, laser ranging technology has been applied to sighting apparatuses, which greatly improves accuracy and speed of ranging. However, since a laser rangefinder is located outside an sighting apparatus, a user needs to observe back and forth between the sighting apparatus and the laser rangefinder, and obtain a final data through comprehensive calculation according to experience or a specific algorithm, which is relatively troublesome. 
     SUMMARY OF THE DISCLOSURE 
     In view of the above, the present disclosure provides an imaging rangefinder capable of solving or optimizing the above problems, a sighting apparatus having the imaging rangefinder, a shooting device having the sighting apparatus, and a method for adjusting the aiming base point. 
     The present disclosure provides an imaging rangefinder capable of being adjustably mount on a sighting telescope, comprising a power supply, a control module electrically connected to the power supply, an imaging module electrically connected to the control module, a ranging imaging module electrically connected to the control module, and a display module electrically connected to the control module, and an eyepiece system showing an image shown by the display module, wherein an image from the sighting telescope is transmitted to the control module via the imaging module, the image shown by the display module comprises the image from the sighting telescope, an image from the ranging imaging module, and ranging information and ranging aiming point from the ranging imaging module. 
     In some embodiments, the imaging module comprises a first reflecting system and a first imaging sensor, optical paths of the image from the sighting telescope are folded and reflected by the first reflecting system to the first imaging sensor, and the first imaging sensor converts an optical signal into an electrical signal and transmits the electrical signal to the control module. 
     In some embodiments, the first reflecting system comprises a first reflecting mirror arranged behind an eyepiece of the sighting telescope and at least one second reflecting mirror which is arranged between the first reflecting mirror and the eyepiece of the sighting telescope. 
     In some embodiments, the ranging imaging module comprises a laser ranging unit, an imaging unit, and a second imaging sensor, the laser ranging unit is electrically connected with the control module to provide the ranging information and the ranging aiming point, and the second imaging sensor converts an optical signal from the imaging unit into an electrical signal, and transmits the electrical signal to the control module. 
     In some embodiments, the laser ranging unit comprises a laser emitting unit for emitting a laser beam to a target and a laser receiving unit for receiving a reflected laser beam, and the imaging unit is configured to receive natural light and form an image, and 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, an axis of the laser emitting optical path, an axis of the laser receiving optical path, and an axis of the natural light observation optical path are coaxial with each other, and three axes overlap each other. 
     In some embodiments, the laser emitting unit comprises a dichroic mirror for reflecting laser and allowing natural light to pass therethrough, the imaging unit comprises the dichroic mirror and an imaging mirror for condensing natural light, and the second imaging sensor receives natural light condensed via the imaging mirror. 
     In some embodiments, the ranging imaging module further comprises an infrared source unit for providing night-vision infrared illumination for the sighting telescope and the imaging unit. 
     In some embodiments, the display module comprises a display driver board and a display screen mounted on the display driver board, the display driver board is electrically connected to the control module, and a data of the control module is read and sent to the display screen for display. 
     In some embodiments, the image and data shown on the display screen are refracted and turned by the eyepiece system, and then projected from the imaging rangefinder along an optical path of the sighting telescope. 
     In some embodiments, the eyepiece system comprises a second reflecting system and a plurality of lenses. 
     In some embodiments, the second reflecting system comprises a third reflecting mirror and at least one fourth reflecting mirror, and the plurality of lenses are arranged between the third reflecting mirror and the at least one fourth reflecting mirror. 
     In some embodiments, the imaging rangefinder further comprised a housing which accommodates the power supply, the control module, the imaging module, the ranging imaging module and the eyepiece system, the housing is connected with the sighting telescope by a first adjusting element provided inside the housing, and the housing is rotatable relative to the first adjusting element to adjust a position of the imaging module relative to the sighting telescope, so that an optical axis of the imaging rangefinder and an optical axis of the sighting telescope are coaxial. 
     In some embodiments, the ranging imaging module is movably assembled in the housing through a second adjusting element, so that a position of the ranging imaging module relative to the sighting telescope is adjusted. 
     In some embodiments, the housing is provided with a lateral moving mechanism and a longitudinal moving mechanism for driving the second adjusting element to move relative to the housing in the lateral and longitudinal directions, respectively. 
     The present disclosure also provides a sighting apparatus comprising a sighting telescope and an imaging rangefinder connected with the sighting telescope, wherein the imaging rangefinder is the above imaging rangefinder. 
     The present disclosure further provides a method for adjusting an aiming base point of a sighting apparatus comprising a sighting telescope and an imaging rangefinder connected with the sighting telescope, wherein the method comprises: 
     controlling the control module through buttons provided on the housing; and
 
moving a position of a display icon of the display module under the control module in order to move an aiming point of the imaging rangefinder shown in the display module to a center of a sight radius of the sighting telescope, so that the aiming point of the imaging rangefinder coincides with the center of the sight radius of the sighting telescope.
 
     The present disclosure also provides a shooting device comprising a gun and a sighting apparatus mounted on the gun, wherein the sighting apparatus is the above sighting apparatus. 
     The present disclosure also provides a method for adjusting a shooting base point of a shooting device, wherein the method comprises: 
     adjusting an aiming point of the imaging rangefinder to coincide with a center of a sight radius of the sighting telescope;
 
adjusting the center of sight radius of the sighting telescope to coincide with a trajectory of the gun, so that the sighting apparatus and the gun are zeroed at a certain distance, and adjusting mechanisms of the sighting telescope is locked;
 
correcting distance and windage by controlling the aiming point of the imaging rangefinder on the display module by buttons provided on the housing; and
 
returning the aiming point of the imaging rangefinder back to the center of the aiming base line of the sighting telescope that has been locked after hitting the target to achieve a second zeroing of the sighting device.
 
     The present disclosure further provides a method for adjusting a shooting base point of a shooting device according to claim  17 , wherein the method comprises: 
     a. adjusting an aiming point of the imaging rangefinder to coincide with a center of a sight radius of the sighting telescope;
 
b. adjusting the center of sight radius of the sighting telescope to coincide with a trajectory of the gun, so that the sighting apparatus and the gun are zeroed at a certain distance;
 
c. opening a teaching mode menu of the sighting telescope, and at the same time hitting a target at other distance with a gun zeroed at a certain distance, and displaying an impact point on the display module after the hitting is completed;
 
d. manually adjusting the aiming point of the imaging rangefinder to the impact point of the other distance, and completing the recording;
 
e. repeating steps c and d for a target at a distance different from the certain distance; and
 
f. automatically adjusting the aiming point of the imaging rangefinder according to a value measured by the imaging rangefinder under the control module of the imaging rangefinder when the shooting device exiting the teaching mode starts hitting the target, and hitting the target according to the aiming point of the imaging rangefinder.
 
     Comparing with the prior art, the imaging rangefinder of the sighting apparatus of the present disclosure displays a ranging data collected by the imaging rangefinder together with an image data observed by the sighting apparatus on a display, so that a user can observe all the required data through the eyepiece, which is simple and convenient, fast and effective to use. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is an assembled perspective view of an embodiment of an sighting apparatus according to the present disclosure. 
         FIG.  2    is a schematic structural view of an imaging rangefinder of the sighting apparatus shown in  FIG.  1   . 
         FIG.  3    is an exploded view of an imaging rangefinder of the sighting apparatus shown in  FIG.  1   . 
         FIG.  4    is a cross-sectional view of an imaging rangefinder of the sighting apparatus shown in  FIG.  1   . 
         FIG.  5    is a schematic view of a first optical path and a third optical path of the imaging rangefinder shown in  FIG.  2   . 
         FIG.  6    is a schematic view of a second optical path of the imaging rangefinder shown in  FIG.  2   . 
         FIG.  7    shows a shooting device according to an embodiment of the present disclosure. 
         FIG.  8    shows a schematic view as viewed through an eyepiece system of an imaging rangefinder of the present disclosure. 
     
    
    
     Reference numerals:  1  sighting apparatus;  2  sighting telescope;  21  eyepiece;  22  eyepiece sleeve;  3  imaging rangefinder;  30  housing;  301  engaging portion;  302  body;  303  closing end;  304  leg;  305  connecting portion;  306  screw;  31  power source;  32  control module;  321  button;  33  imaging module;  331  first reflecting system;  332  first imaging sensor;  3331  first reflecting mirror;  3333  second reflecting mirror;  3332  third reflecting mirror;  3334  fourth reflecting mirror;  34  ranging imaging module;  340  second adjusting element;  401  lateral moving mechanism;  402  longitudinal moving mechanism;  403  second ball head;  404  main body;  405  recess;  341  laser ranging unit;  411  laser emitting unit;  111  dichroic mirror;  112  laser reflecting mirror;  113  laser emitting mirror;  412  laser receiving unit;  121  laser receiving mirror;  342  second imaging sensor;  343  imaging unit;  431  fifth reflecting mirror;  432  imaging mirror;  344  infrared source unit;  35  display module;  351  display driver board;  352  display screen;  521  image display area of the sighting telescope;  522  laser ranging indication display area;  523  sight radius of the sighting telescope;  524  aiming point of the imaging rangefinder;  36  eyepiece system;  361  second reflecting system;  362  lens;  621  coupling mirror;  622  glass sheet;  37  first adjusting element;  371  first ball head;  372  cavity;  373  opening;  4  shooting device;  41  gun;  42  impact point;  5  target;  6  eyepiece hood. 
     DDESCRIPTION OF EMBODIMENTS 
     In order to facilitate understanding of the present disclosure, the present disclosure will now be described more fully with reference to the drawings. One or more embodiments of the present disclosure are shown by way of example in the drawings, in order to provide a more accurate and thorough understanding of the disclosed technical solution. However, it should be understood that the present disclosure may be realized in many different forms and is not limited to the embodiments described below. 
     Referring to  FIGS.  1  and  2   , an sighting apparatus  1  according to an embodiment of the present disclosure includes a sighting telescope  2  and an imaging rangefinder  3 . The sighting telescope  2  may be a conventional sighting telescope, such as a white-light sighting telescope and a night-vision sighting telescope. The imaging rangefinder  3  is attached behind an eyepiece  21  of the sighting telescope  2 . In this embodiment, the imaging rangefinder  3  is mounted on an eyepiece sleeve  22  of the sighting telescope  2 . Alternatively, the imaging rangefinder may be directly used as an eyepiece system of the sighting telescope. In order to more clearly show a positional relationship of respective components and modules of the imaging rangefinder  3 , some wires and electronic components are omitted in the drawings shown herein. 
     Referring to  FIGS.  2  to  4   , the imaging rangefinder  3  includes a housing  30 , a power source  31  disposed in the housing  30 , a control module  32  electrically connected to the power source  31 , and an imaging module  33  electrically connected to the control module  32 , a ranging imaging module  34  electrically connected to the control module  32 , a display module  35  electrically connected to the control module  32 , and an eyepiece system  36  showing an image formed by the display module  35 . The image shown by the display module  35  includes an image from the sighting telescope  2 , an image from the ranging imaging module  34 , and ranging information and ranging aiming points from the ranging imaging module  34 , that is, the image on a target obtained by the sighting telescope  2  is displayed by the display module  35  together with the ranging image and the ranging information on the target obtained by the imaging rangefinder. 
     In this embodiment, the imaging rangefinder  3  is connected to the sighting telescope  2  through a first adjusting element  37  provided inside the housing  30 . The first adjusting element  37  is sleeved on the eyepiece sleeve  22  of the sighting telescope  2 . Preferably, the first adjusting element  37  is locked to the eyepiece sleeve  22  by a screw  306 . Alternatively, the first adjusting element may be mounted on the eyepiece sleeve  22  by screwing, snapping, or the like. The imaging module  33  is provided behind the eyepiece  21  of the sighting telescope  2  adjacent to the first adjusting element  37 . The housing  30  is rotatable relative to the first adjusting element  37  to adjust a position of the imaging rangefinder  3  relative to the sighting telescope  2 , thereby adjusting an optical axis center of the imaging module  33 , and aim points of visible area of the imaging rangefinder  3  and of the sighting telescope  2  can be locate at an exact center of a field of view as much as possible. In this embodiment, the first adjusting element  37  is configured as a sleeve-like structure having a ball head. Specifically, the first adjusting element  37  includes a first ball head  371  adjacent to the eyepiece  21  of the sighting telescope  2  and a cavity  372  extending axially from the first ball head  371 . The sleeve-like first adjusting element  37  is provided with an opening  373  in a sleeve wall along its axial length. An inner diameter of the first adjusting element  37  can be adjusted through the opening  373  to accommodate eyepiece sleeves of different sizes of sighting telescopes. 
     The housing  30  includes an engaging portion  301  corresponding to the first ball head  371  and a body  302  for accommodating internal components of the imaging rangefinder  3 . The engaging portion  301  is substantially U-shaped. The engaging portion  301  is arranged at an axial end of the body  302 . A radially inner side of the engaging portion  301  is recessed along a radial direction thereof to engage the first ball head  371 . In this embodiment, there is a gap between the cavity  372  of the first adjusting element  37  and the body of the housing  30  to facilitate rotation of the housing  30  relative to the first adjusting element  37 . After the first adjusting element  37  is mounted on the sighting telescope  2 , a position of the housing  30  relative to the first adjusting element  37  is adjusted by a cooperation of the first ball head  371  and the engaging portion  301 , so that the position of the imaging rangefinder  3  with respect to the sighting telescope  2  is adjusted to achieve an adjustment of the optical axis center of the imaging rangefinder  3 . In this embodiment, the engaging portion  301  is substantially provided as a U-shaped hoop. The substantially U-shaped engaging portion  301  includes a closing end  303  and two legs  304  extending from the closing end  303 . The closing end  303  is connected to the body  302  of the housing  30 . A gap is formed between each of the two legs  304  and the body  302 . A distance between the two legs  304  may be adjusted. The housing  30  further includes a connecting portion  305  provided at an open end of the engaging portion  301 . The connecting portion  305  is arranged between the two legs  304  and is spaced apart from each leg by a distance. After the position of the imaging rangefinder  3  with respect to the sighting telescope  2  is adjusted, a distance between each leg and the connecting portion  305  is shortened by a fastener (for example, an adjusting screw) connected to the two legs  304  and the connecting portion  305 , so that the housing  30  is locked to the first adjusting element  37 , that is, the imaging rangefinder  3  is locked to the sighting telescope  2 , and the optical axis center of the imaging module  33  coincides with the optical axis center of the eyepiece  21  of the sighting telescope  2 . 
     The imaging module  33  includes a first reflecting system  331  and a first imaging sensor  332 . Optical paths of the sighting telescope  2  are folded and reflected by the first reflecting system  331  to the first imaging sensor  332 , and the first imaging sensor  332  converts an optical signal into an electrical signal. The first imaging sensor  332  is electrically connected to the control module  32  and transmits the electrical signal to the control module  32 . In this embodiment, the first imaging sensor  332  is arranged perpendicular to the sighting telescope  2 . Referring to  FIGS.  5  and  6   , the first reflecting system  331  includes a first reflecting mirror  3331  arranged behind the eyepiece of the sighting telescope and at least one second reflecting mirror  3333  which is arranged between the first reflecting mirror  3331  and the eyepiece  21  of the sighting telescope  2 . In this embodiment, the at least one second reflecting mirror  3333  includes a plurality of second reflecting mirrors, preferably two second reflecting mirrors. An angle and relative position between the first reflecting mirror  3331  and the second reflecting mirror  3333  may be any angle and position satisfying the reflecting imaging condition. Therefore, referring to  FIG.  5    at the same time, by the above arrangement, the optical path emitted from the sighting telescope  2  is folded to the first imaging sensor  332  via the first reflecting system  331 , a safe visual distance (exit pupil distance) of an human eye to the sighting telescope  2  is shortened. Alternatively, the first reflecting mirror and the second reflecting mirror may include a plurality of reflecting prisms, or a combination of a plurality of reflecting mirrors and reflecting prisms. In this embodiment, the first reflecting mirror  3331  is arranged behind the eyepiece of the sighting telescope. The first reflecting mirror  3331  is arranged substantially on the optical axis of the sighting telescope  2 . The optical path from the eyepiece  21  of the sighting telescope  2  is first reflected by the first reflecting mirror  3331 , and then reflected to the first imaging sensor  332  via the second reflecting mirror  3333 . Preferably, the first reflecting mirror  3331  is arranged obliquely in front of the eyepiece  21  of the sighting telescope  2 , wherein an upper end of the first reflecting mirror  3331  is adjacent to the eyepiece  21  and a lower end is far away from the eyepiece  21 . 
     The ranging imaging module  34  is movably assembled in the housing  30  through a second adjusting element  340 . In this embodiment, the second adjusting element  340  is configured as a sleeve-like structure having a ball head. Optical elements of the ranging imaging module  34  are arranged in the second adjusting element  340 . Preferably, the housing  30  is provided with a lateral moving mechanism  401  and a longitudinal moving mechanism  402  for driving the second adjusting element  340  to move relative to the housing  30  in the lateral and longitudinal directions, respectively, in this way, a rotation of the ranging imaging module  34  in the housing  30  is controlled so that an image of the ranging imaging module  34  is aligned with an image of the imaging module  33  which is coincided with an observation center of the sighting telescope  2 , so that data obtained by the ranging imaging module  34  is data of an object being observed by the sighting telescope  2 . In this embodiment, the second adjusting element  340  includes a second ball head  403  and a main body  404  extending axially from an end of the second ball head  403 . The housing  30  is provided with a recess  405  on an inner side corresponding to the second ball head  403 , and the second ball head  403  is engaged with the recess  405 . 
     The ranging imaging module  34  includes a laser ranging unit  341 , an imaging unit  343 , and a second imaging sensor  342 . The laser ranging unit  341  is electrically connected with the control module  32  to provide the ranging information and the ranging aiming point, and the second imaging sensor  342  converts an optical signal from the imaging unit  343  into an electrical signal, and transmits the electrical signal to the control module  32 . In addition, the ranging imaging module  34  further includes an infrared source unit  344  for providing night-vision infrared illumination for the sighting telescope  2  and the imaging unit  343 . Thus, the sighting telescope  2  provided with the imaging rangefinder  3  can have a night vision function. In this embodiment, an infrared source unit  344  (infrared night vision lamp) is provided in the second adjusting element  340  perpendicular to an axis of the second adjusting element  340 . 
     In this embodiment, the laser ranging unit  341  includes a laser emitting unit  411  for emitting a laser beam to a target and a laser receiving unit  412  for receiving the reflected laser beam, and the imaging unit  343  is configured to receive natural light and form an image, and the laser emitting unit  411  forms a laser emitting optical path, the laser receiving unit  412  forms a laser receiving optical path, and the imaging unit  343  forms a natural light observation optical path, an axis of the laser emitting optical path, an axis of the laser receiving optical path, and an axis of the natural light observation optical path are coaxial with each other, and three axes overlap each other. 
     Preferably, the laser emitting unit  411  includes a laser emitter for emitting a laser beam, a laser emitting mirror  113  for collimating the laser beam, a laser reflecting mirror  112  for reflecting the laser beam, and a dichroic mirror  111  for reflecting laser and allowing natural light to pass therethrough. In this embodiment, the laser reaches the dichroic mirror  111 , is reflected again, and reaches a target  5 . The laser receiving unit  412  includes a laser receiving mirror  121  for condensing the laser beam turned back from the target  5 , and a laser receiver for receiving the condensed laser beam. Both the laser receiving mirror  121  and the dichroic mirror  111  are arranged toward the target  5 . Preferably, the laser receiving mirror  121  is arranged perpendicular to an axis of the second adjusting element  340 . In this embodiment, the dichroic mirror  111  is arranged in the second adjusting element  340  obliquely with respect to the axis of the second adjusting element  340 . Preferably, the laser receiver converts the received optical signal into an electrical signal. The imaging unit  343  may be a white light imaging unit or a digital imaging unit. In this embodiment, the imaging unit  343  is described by taking the digital imaging unit as an example. The imaging unit  343  includes the dichroic mirror  111  that allows natural light to pass through and reflects laser light, and an imaging mirror  432  for condensing natural light. The second imaging sensor  342  receives natural light condensed via the imaging mirror  432 . 
     The first imaging sensor  332  of the imaging module  33  is electrically connected to the control module  32 , and the second imaging sensor  342  of the ranging imaging module  34  is also electrically connected to the control module  32 . Thus, the electric signal about the observation optical path of the first imaging sensor  332  and the electric signal about the distance-measuring optical path of the second imaging sensor  342  are both transmitted to the control module  32 . The control module  32  processes the obtained electrical signals such that an image relating to the observation optical path and an image relating to the distance-measuring optical path are simultaneously displayed on the display module  35 . 
     Preferably, the control module  32  includes a processing unit and an arithmetic unit. The processing unit records a time period from an emission of a laser beam to a return, and the arithmetic unit calculates a distance of the target  5  based on the time period and a speed of the laser beam. Optionally, the ranging imaging module may further include an angle sensor for comprehensively measuring an angle of the target, a temperature and humidity sensor for measuring temperature and humidity of a surrounding environment, a barometric pressure sensor for measuring an atmospheric pressure of the surrounding environment, a wind speed and direction sensor for measuring a wind speed and direction of the surrounding environment, or a satellite positioning system for receiving global positioning data of the target, such as latitude and longitude, altitude, etc. The arithmetic unit corrects a calculation result based on data information such as temperature, humidity, barometric pressure, wind speed, wind direction and the like of the surrounding environment detected by the ranging imaging module, so that the influence of various environmental factors can be overcome and the accuracy can be guaranteed. Thus, the ranging information with high accuracy is displayed on the display module  35 . 
     The display module  35  includes a display driver board  351  and a display screen  352  mounted on the display driver board  351 . The display driver board  351  is electrically connected to the control module  32 , and the data of the control module  32  is read and sent to the display screen  352  for display. The display screen  352  may be an OLED display screen, a TFT display screen, an LCD display screen, a digital tube display screen, etc. In this embodiment, the display screen  352  has a size of 1.54 inches. It should be understood that, due to the respective optical path characteristics of the sighting telescope  2  and the imaging rangefinder  3 , that is, the optical path of the sighting telescope  2  is aimed at high magnification (long-focus) accurate striking, and the laser distance measuring optical path of the imaging rangefinder  3  is for small magnification (wide angle) search distance measuring, two images can be provided to the user at the same time, thereby improving the usability of the sighting apparatus  1 . 
     The image and data shown on the display screen  352  are refracted and turned by the eyepiece system  36 , and then projected into the user&#39;s eye along the optical path of the sighting telescope  2 . The eyepiece system  36  includes a second reflecting system  361  and a plurality of lenses  362 . The second reflecting system  361  includes a third reflecting mirror  3332  and at least one fourth reflecting mirror  3334 , and the plurality of lenses  362  are arranged between the third reflecting mirror  3332  and the at least one fourth reflecting mirror  3334 . It is conceivable that an angle between the third reflecting mirror  3332  and the at least one fourth reflecting mirror  3334  and the relative position between the third reflecting mirror  3332  and the at least one fourth reflecting mirror  3334  may be any angle and position satisfying the reflecting imaging condition. The plurality of lenses  362  are coupling mirrors. In this embodiment, the third reflecting mirror  3332  is arranged between the eyepiece  622  of the eyepiece system and the first reflecting mirror  3331 . Preferably, the third reflecting mirror  3332  is disposed parallel to the first reflecting mirror  3331 . It is conceivable that the first reflecting mirror  3331  and the third reflecting mirror  3332  may be arbitrarily arranged as long as they satisfy any angle and position of the reflecting imaging condition. In this embodiment, the first reflecting mirror  3331  and the third reflecting mirror  3332  are provided for the purpose of separately adjusting the imaging module  33  and the eyepiece system  36 , thereby reducing the adjustment difficulty and facilitating the operation of the user. 
     In this embodiment, a glass sheet  622  is provided on the optical axis of the sighting telescope  2  and parallel to the eyepiece  21  of the sighting telescope  2 , and an axis of the optical path observed through the glass sheet  622  is coaxial with the axis of the optical path of the eyepiece  21  of the sighting telescope  2 . The coupling mirror  621  is provided above the third reflecting mirror  3332 . Optical paths refracted by the fourth reflecting mirror  3334  of the plurality of second reflecting systems  361  are transmitted through the coupling mirror  621 , projected to the third reflecting mirror  3332 , and deflected by the third reflecting mirror  3332 , and finally projected into the user&#39;s eye via the glass sheet  622 . In this embodiment, an eyepiece hood  6  detachably mounted on the housing  30  is provided adjacent to the glass sheet  622  of the eyepiece system, which is used to cover an outer periphery of the glass sheet  622 . Preferably, the eyepiece hood  6  is a short eyepiece hood. It is conceivable that the short eyepiece hood  6  can be replaced by a long eyepiece hood. In this embodiment, the at least one fourth reflecting mirror  3334  includes a plurality of fourth reflecting mirrors, preferably two fourth reflecting mirrors. 
     Referring to  FIGS.  7  and  8   , the user views the image shown on the display screen  352  through the eyepiece system  36  described above. The image shown on the display screen  352  includes an image display area of the sighting telescope  521  and a laser ranging indication display area  522 . The laser ranging indication display area  522  is located within the image display area of the sighting telescope  521 . Optionally, the image display area of the sighting telescope  521  may also be located within the laser ranging indication display area  522 . In addition, a sight radius of the sighting telescope  523  and an aiming point of the imaging rangefinder  524  are also shown in the display screen  352 . When the imaging rangefinder  3  is used, the user can adjust the aiming point of the imaging rangefinder  524  such that the aiming point of the imaging rangefinder  524  coincides with an center of the sight radius of the sighting telescope  523 . 
     Further, the eyepiece hood  6  in the second embodiment is a long eyepiece hood, but it may be replaced with a short eyepiece hood. The specific size of the eyepiece hood  6  may be selected according to the actual use. 
     The user can adjust a position of the imaging rangefinder  3  relative to the sighting telescope  2  through the first adjusting element  37  and the second adjusting element  340  so that the aiming point of the imaging rangefinder  3  coincides with the center of the sight radius of the scope  2 . In addition, the user can also control the control module  32  through buttons  321  provided on the housing  30  to move the aiming point of the imaging rangefinder  3  to the center of the sight radius of the sighting telescope  2 , in order to achieve their coincidence. Specifically, the buttons  321  are electrically connected to the control module  32 , and the buttons  321  are pressed to move a position of the aiming point of the imaging rangefinder in the display screen in such a manner that a position of a display icon is changed. The aiming point of the imaging rangefinder in the display screen is made to coincide with the center of the sight radius of the sighting telescope (as shown in  FIG.  8   , the sight radius of the sighting telescope  523  indicated by the solid lines coincides with the aiming point of the imaging rangefinder  524  indicated by the dotted lines). After the aiming point of the imaging rangefinder  3  coincides with the center of the sight radius of the sighting telescope  2 , a recording operation of the optical observation original base point is realized. 
     As shown in  FIG.  7   , the present disclosure also provides a shooting device  4  including a gun  41  and the aforementioned sighting apparatus  1  mounted on the gun  41 . An adjustment of a shooting base point of the shooting device  4  is illustrated below with reference to  FIGS.  1 ,  3  and  8   . 
     A first method for adjusting the shooting base point is: after the aiming point of the imaging rangefinder  3  coincides with the center of the sight radius of the sighting telescope  2 , other methods of operation of the sighting apparatus  1  of the shooting device  4  are used to operate the device directly according to the methods of operation of previous conventional optical devices, but the aiming point of the imaging rangefinder  3  of the sighting apparatus  1  is only a secondary zero point of the conventional device, and the user can operate the sighting apparatus  1  arbitrarily; after hitting the target, the center of the sight radius of the sighting telescope  2  is set to coincide with the aiming point of the imaging rangefinder  3  in order to return to an original zero point, at this time, the aiming point of the imaging rangefinder  3  is used only as the recording point of the aiming base point, and the conventional required manual recording (handwriting, memorization, etc.) zero point is visualized. 
     The second method for adjusting the shooting base point is: after the aiming point of the imaging rangefinder  3  coincides with the center of the sight radius of the sighting telescope  2 , the aiming base point of the sighting apparatus  1  is adjusted to coincide with a trajectory of the gun  41 , at this time, the sighting telescope  2  and the gun  41  have been zeroed at a certain specific distance, and the adjusting mechanism of the imaging rangefinder  3  is locked and no longer used, the buttons  321  provided on the housing  30  is used to control the aiming point of the imaging rangefinder  3  on the display screen for other distance and windage correction, after hitting the target, the aiming point of the imaging rangefinder  3  will need to be reset to the aiming base point of the locked sighting telescope to complete the second zeroing of the sighting apparatus. 
     The third method for adjusting the shooting base point is an automatic adjustment. First, it is confirmed whether the gun  41 , the sighting telescope  2  and the aiming point of the imaging rangefinder  524  are correct or not by hitting the target at the zero point of a specific distance with the adjusted gun  41  and the sighting telescope  2 , for example, the zero point of a specific distance is at 100 meters, at this time, the laser ranging point also needs to return to zero at 100 meters. At this time, the respective aiming base points of the gun  41 , the sighting telescope  2 , and the imaging rangefinder  3  are all zeroed at 100 meters. At this time, a teaching mode menu of the sighting telescope  2  of the sighting apparatus  1  is opened, and at the same time, the target of 50 meters is hit with the gun  41  zeroed at 100 meters, after hitting, a impact point  42  appears just above the aiming base point (assume no wind deflection). At this time, the sighting telescope  2  is still pointing to a center of the target, and the aiming point of the imaging rangefinder  524  is manually adjusted to the impact point of 50 meters (as shown in  FIG.  8   , the aiming point of the imaging rangefinder  524  indicated by the dotted lines coincides with the impact point  42 ), and a record is completed. Turning on the teaching mode again, the target is hit with the gun zeroed at 100 meters, and the position of the target is moved to a distance of, for example, 150, 200, 250 meters, etc. (this distance may be an integer or a random value); after each hit, the aiming point of the imaging rangefinder  524  is adjusted to the corresponding impact point and is recorded and locked, and the imaging rangefinder  3  records the corresponding laser distance-measuring data once every time the aiming point is locked. Thus, when the shooting device exiting the teaching mode starts hitting the target, the control module of the imaging rangefinder automatically adjusts the aiming base point each time according to the value measured by the laser distance-measuring, and the user may hit the target according to the position of the aiming point of the imaging rangefinder  524  at which the imaging rangefinder is finally moved. 
     The above is only preferred embodiments of the present disclosure, and is not intended to limit the present disclosure. Any simple change or equivalent replacement of the technical solution that can be easily obtained by any person familiar with the technical field within the technical scope disclosed by the disclosure falls within the protection scope of the disclosure.