A monocular ranging telescope and ranging imaging method

Abstract

The invention discloses a monocular distance measuring telescope, comprising a housing, a telescopic module, a transmitting module, a receiving module, an imaging module and a control module; the telescopic module comprises an eyepiece group and an objective lens; the transmitting module comprises a transmitting diode, a transmitting lens barrel and a transmitting lens; the receiving module comprises an image transfer prism group, a receiving lens, a receiving board and a photodiode, and the image transfer prism group can split the light entering from the objective lens to the receiving lens; the imaging module comprises an LCD transmission screen or the imaging module comprises an aperture, an OLED lens group and an OLED display screen; the control module comprises a keypad, a main board and a transmitting board, the keypad is fixed on the housing, a key for controlling the main board is arranged on the keypad, and the transmitting board and the receiving board are electrically connected to the main board. A distance measuring imaging method is also provided. The monocular distance measuring telescope and the distance measuring imaging method of the invention realize the functions of telescopic observation and distance measuring information imaging display that are only available in current multi-tube products with only one tube, and the volume is small and the cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of ranging telescopes, and in particular to a monocular ranging telescope and a ranging imaging method. Background Art

[0002] A ranging telescope is a measuring instrument that combines observation and measurement by combining a laser rangefinder and a telescope system. The currently commonly used ranging telescopes have a structure with two or more tubes, including a telescope system, a transmitting module, a receiving module, etc. This structure is large in size, complex in appearance, and has a high production cost. Summary of the invention

[0003] The purpose of the present invention is to provide a monocular ranging telescope and a ranging imaging method to solve the problems existing in the above-mentioned prior art, reduce the volume of the ranging telescope, and reduce the production cost.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a monocular ranging telescope, comprising a housing, a telescopic module, a transmitting module, a receiving module, an imaging module and a control module; the telescopic module comprises an eyepiece group and an objective lens, and the eyepiece group and the objective lens are respectively arranged in the telescope barrel of the housing;

[0006] The transmitting module comprises a transmitting diode, a transmitting lens barrel and a transmitting lens, wherein the transmitting lens barrel is arranged in the telescope barrel, the objective lens is provided with a notch corresponding to the transmitting lens barrel, and the transmitting lens barrel passes through the notch; the transmitting diode and the transmitting lens are respectively arranged in the transmitting lens barrel, and the light-emitting surface of the light-emitting chip of the transmitting diode is located at the focus and the optical axis of the transmitting lens;

[0007] The receiving module comprises a relay prism group, a receiving lens, a receiving plate and a photodiode. The relay prism group is fixed between the eyepiece group and the objective lens. The relay prism group can split the light entering from the objective lens to the receiving lens. The photodiode is electrically connected to the receiving plate. The photosensitive area of ​​the chip of the photodiode is located at the focus of the receiving lens.

[0008] The imaging module includes an LCD transmission screen or the imaging module includes an aperture, an OLED lens group and an OLED display screen, the LCD transmission screen is arranged between the eyepiece group and the image relay prism group, and the LCD transmission screen is located on the focal plane of the eyepiece group; the image of the OLED display screen can be projected onto the aperture and the focal plane of the eyepiece group through the OLED lens group and the image relay prism group in sequence;

[0009] The control module includes a keypad, a main board and a transmitting board. The keypad is fixed on the shell. The keypad is provided with keys for controlling the main board. The transmitting board and the receiving board are electrically connected to the main board. Triggering the keys can enable the main board to emit laser through the transmitting board and the light-emitting diode, and enable the main board to calculate the distance information fed back by the echo signal after receiving the echo signal fed back by the receiving board, and display the distance information on the LCD transmission screen or the OLED screen.

[0010] Preferably, it also includes an eyepiece adjustment structure, which includes a movable cylinder and a fixed cylinder, the fixed cylinder is fixed on the shell, the eyepiece group is fixed in the movable cylinder, the movable cylinder is inserted in the fixed cylinder, a spiral curved groove is provided on the side wall of the fixed cylinder, a guide pin is provided on the side wall of the movable cylinder, the guide pin is located in the curved groove, and the guide pin is slidably matched with the curved groove; the position of the focal plane of the eyepiece group can be adjusted by rotating the movable cylinder.

[0011] Preferably, it also includes a lens adjustment structure, which includes an inner cylindrical barrel and an outer cylindrical barrel, the receiving lens is fixed on the inner cylindrical barrel, the inner wall of the outer cylindrical barrel is fixedly provided with a spiral slide groove, and the side wall of the inner cylindrical barrel is provided with a protruding guide column, and the protruding guide column is slidably matched with the slide groove; the focal plane of the receiving lens can be adjusted by rotating the inner cylindrical barrel.

[0012] Preferably, it further comprises a light extinction channel arranged between the image transfer prism group and the objective lens, and the inner wall of the light extinction channel is provided with light extinction lines.

[0013] Preferably, the mainboard has a data calculation and processing function and a function of communicating with and driving the LCD transmission screen or the OLED display screen.

[0014] Preferably, the aperture is a circular opening.

[0015] The present invention also provides a ranging imaging method, based on the above-mentioned monocular ranging telescope, comprising the following steps:

[0016] (1) emitting laser light through an emitting diode, wherein the laser light passes through an emitting lens and is reflected by an observed object, and then enters an emitting lens barrel through an objective lens;

[0017] (2) The laser light entering the transmitting lens barrel is split by the image transfer prism group and then falls on the photosensitive area of ​​the chip of the photodiode through the receiving lens. After receiving the laser light, the photodiode feeds back a signal to the receiving board, and the receiving board feeds back a signal to the main board. The main board calculates the distance information of the observed object according to the time interval between emitting the laser light and receiving the laser light and the speed of light;

[0018] (3) The main board outputs the calculated distance information to an LCD transmission screen or an OLED display screen for display. The LCD transmission screen is located on the focal plane of the eyepiece group. The image on the OLED display screen can be projected onto the aperture and the focal plane of the eyepiece group in sequence through the OLED lens group and the image transfer prism group.

[0019] Compared with the prior art, the present invention has achieved the following technical effects:

[0020] The monocular ranging telescope and ranging imaging method of the present invention solve the difficult problem of a monocular telescope realizing transmission, reception and telescopic observation within one lens barrel, and realize the functions of telescopic observation and ranging information imaging display which are currently only available in multi-barrel products by using only one barrel, and compared with existing products, the monocular telescope has a smaller size, a simpler appearance and a lower implementation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a structural schematic diagram of a monocular ranging telescope according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the optical path of a monocular ranging telescope according to an embodiment of the present invention;

[0024] Figure 3 This is a structural schematic diagram of a monocular ranging telescope according to a second embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the optical path of the monocular ranging telescope according to the second embodiment of the present invention;

[0026] Among them: 100, monocular rangefinder telescope; 1, objective lens; 2, telescope tube; 3, keypad; 4, LCD transmission screen; 5, moving tube; 6, eyepiece group; 7, image transfer prism group; 8, receiving lens; 9, receiving board; 10, photodiode; 11, main board; 12, transmitting board; 13, transmitting diode; 14, transmitting tube; 15, extinction channel; 16, transmitting lens; 17, lens waterproof ring; 18, lens fixing pressure ring; 19, shell; 20, guide pin; 21, fixed tube; 22, inner cylindrical tube; 23, outer cylindrical tube; 24, protruding guide column; 25, OLED display; 26, OLED lens group. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the 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 without creative work are within the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a monocular ranging telescope and a ranging imaging method to solve the problems existing in the above-mentioned prior art, reduce the volume of the ranging telescope, and reduce the production cost.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] like Figure 1 to Figure 2 As shown: This embodiment provides a monocular ranging telescope 100, including a housing 19, a telescope module, a transmitting module, a receiving module, an imaging module and a control module.

[0032] Among them, the telescope module includes an eyepiece group 6 and an objective lens 1, and the eyepiece group 6 and the objective lens 1 are respectively arranged in the telescope barrel 2 of the shell 19; the transmitting module includes a transmitting diode, a transmitting lens barrel 14 and a transmitting lens 16, the transmitting lens barrel 14 is located in the telescope barrel 2, and the objective lens 1 is provided with a notch corresponding to the transmitting lens barrel 14, and the transmitting lens barrel 14 passes through the notch; the transmitting diode and the transmitting lens 16 are respectively arranged in the transmitting lens barrel 14, and the light-emitting surface of the light-emitting chip of the transmitting diode 13 is located at the focus and optical axis of the transmitting lens 16; the transmitting lens 16 is connected to the transmitting lens barrel 14 through a lens fixing pressure ring 18, the lens fixing pressure ring 18 is hollow, and the transmitting lens 16 is fixed in the hollow part of the lens fixing pressure ring 18, the outer wall of the lens fixing pressure ring 18 is threadedly connected to the inner wall of the transmitting lens barrel 14, and two grooves are arranged on the outer surface of the lens fixing pressure ring 18, so as to facilitate the use of tools to rotate and adjust the lens fixing pressure ring 18; a lens waterproof ring 17 is arranged at the left end of the transmitting lens 16.

[0033] The receiving module includes a transfer prism group 7, a receiving lens 8, a receiving plate 9 and a photodiode 10. The transfer prism group 7 is fixed between the eyepiece group 6 and the objective lens 1. The transfer prism group 7 can split the light entering from the objective lens 1 to the receiving lens 8. The photodiode is electrically connected to the receiving plate 9. The chip photosensitive area of ​​the photodiode 10 is located at the focus of the receiving lens 8.

[0034] The imaging module includes an LCD transmission screen 4 . The LCD transmission screen 4 is arranged between the eyepiece group 6 and the image transfer prism group 7 , and the LCD transmission screen 4 is located on the focal plane of the eyepiece group 6 .

[0035] The control module includes a key board 3, a main board 11 and a transmitting board 12. The key board 3 is fixed on the shell 19. The key board 3 is provided with keys for controlling the main board 11. The transmitting board 12 and the receiving board 9 are electrically connected to the main board 11. The triggering key can enable the main board 11 to emit laser through the transmitting board 12 and the light-emitting diode, and enable the main board 11 to calculate the distance information fed back by the echo signal after receiving the echo signal fed back by the receiving board 9, and display the distance information on the LCD transmission screen 4.

[0036] The monocular rangefinder telescope 100 of the present embodiment further includes an eyepiece adjustment structure, which includes a moving tube 5 and a fixed tube 21. The fixed tube 21 is fixedly mounted on the housing 19, and the eyepiece group 6 is fixedly mounted in the moving tube 5. The moving tube 5 is inserted into the fixed tube 21. A spiral curved groove is arranged on the side wall of the fixed tube 21. A guide pin 20 is arranged on the side wall of the moving tube 5. The guide pin 20 is located in the curved groove, and the guide pin 20 and the curved groove are slidably matched. The position of the focal plane of the eyepiece group 6 can be adjusted by rotating the moving tube 5, so that the human eye can observe a clear image on the LCD transmission screen 4 on the other side of the eyepiece. In specific applications, a toggle wheel can be fixedly mounted on one end of the moving tube 5 extending out of the fixed tube 21 to facilitate the user to rotate the moving tube 5.

[0037] The monocular rangefinder telescope 100 of this embodiment also includes a lens adjustment structure, which includes an inner cylindrical barrel 22 and an outer cylindrical barrel 23. The receiving lens 8 is fixedly mounted on the inner cylindrical barrel 22. A spiral slide groove is fixedly mounted on the inner wall of the outer cylindrical barrel 23. A protruding guide column 24 is provided on the side wall of the inner cylindrical barrel 22. The protruding guide column 24 slidably cooperates with the slide groove. The focal plane of the receiving lens 8 can be adjusted by rotating the inner cylindrical barrel 22. In specific applications, a toggle wheel can be fixedly mounted on one end of the inner cylindrical barrel 22 extending from the outer cylindrical barrel 23 to facilitate the user to rotate the moving barrel 5.

[0038] An extinction channel 15 is also provided on the telescope tube 2 between the image transfer prism group 7 and the objective lens 1. An extinction pattern is provided on the inner wall of the extinction channel 15. The extinction channel 15 is an extinction structure provided on the telescope tube 2 between the lens groups in order to reduce system stray light.

[0039] The main board 11 has the functions of data calculation and processing, communication with the LCD transmission screen 4 or the OLED display screen 25, and driving the display.

[0040] This embodiment also provides a ranging imaging method, based on the above-mentioned monocular ranging telescope 100, comprising the following steps:

[0041] (1) The laser is emitted through the emitting diode 13, passes through the emitting lens 16 and is reflected by the observed object, then enters the emitting lens barrel 14 through the objective lens 1;

[0042] (2) The laser light entering the transmitting lens barrel 14 is split by the image transfer prism group 7 and then falls on the photosensitive area of ​​the chip of the photodiode 10 through the receiving lens 8. After receiving the laser light, the photodiode 10 feeds back a signal to the receiving board 9, and the receiving board 9 feeds back a signal to the main board 11. The main board 11 calculates the distance information of the observed object according to the time interval between emitting the laser light and receiving the laser light and the speed of light;

[0043] (3) The main board 11 outputs the calculated distance information to the LCD transmission screen 4 or the OLED display screen 25 for display. The LCD transmission screen 4 is located on the focal plane of the eyepiece group 6. The human eye can directly observe the distance information displayed on the LCD transmission screen 4 through the eyepiece group 6.

[0044] The specific use process of the monocular ranging telescope 100 of this embodiment is as follows:

[0045] By pressing the button on the keypad 3 to issue a distance measurement command, the mainboard 11 drives the pulse laser emitting diode 13 on the transmitting board 12 to emit a pulse laser with a very short duration, and at the same time starts the counting clock. After the emitted laser passes through the emitting lens 16, a collimated laser beam is obtained. The collimated beam is characterized by a very small laser divergence angle, and the spot size of the cross section perpendicular to the emission direction changes slowly with the distance. After the emitted laser passes through the propagation distance L, it reaches the telescope system aiming target surface. At this time, part of the laser will be reflected back, and part of the reflected laser will be focused on the photosensitive area of ​​the photodiode 10 chip through the telescope objective lens 1, the image transfer prism group 7 and the receiving lens 8. The received light signal is converted into an electrical signal through the photodiode 10. After the mainboard 11 receives the electrical signal, the counting clock is turned off at the same time. Finally, the round-trip pulse time difference t=N×(1 / f) measured by the clock counter is used to calculate the distance to be measured L=1 / 2×c×t, where N is the number of clock cycles measured by the counter, and f is the counting clock frequency. In general, in order to avoid the occurrence of singular values ​​or to ensure the accuracy of distance measurement, multiple measurements can be taken to obtain the average value to obtain the distance information L. The distance measurement information is transmitted to the LCD transmission screen 4 through the data communication module on the main board 11, and the human eye can observe the measurement information through the eyepiece group 6, realizing the functions of telescopic observation and fast and accurate imaging display of distance measurement information that are only available in current products with multiple tubes with only one tube.

[0046] Embodiment 2

[0047] like Figure 3 to Figure 4As shown: This embodiment provides a monocular distance measuring telescope 100, the structure and working principle of the monocular distance measuring telescope 100 of this embodiment are basically the same as those of the monocular distance measuring telescope 100 provided in the first embodiment, except that: in this embodiment, the imaging module includes an aperture, an OLED lens group 26 and an OLED display screen 25, and the aperture is a circular opening formed on the housing 19. The distance information is displayed on the OLED screen, and the image of the OLED display screen 25 can be projected on the focal plane of the aperture and the eyepiece group 6 through the OLED lens group 26 and the image transfer prism group 7 in sequence.

[0048] This embodiment also provides a ranging imaging method, based on the above-mentioned monocular ranging telescope 100, comprising the following steps:

[0049] (1) The laser is emitted through the emitting diode 13, passes through the emitting lens 16 and is reflected by the observed object, then enters the emitting lens barrel 14 through the objective lens 1;

[0050] (2) The laser light entering the transmitting lens barrel 14 is split by the image transfer prism group 7 and then falls on the photosensitive area of ​​the chip of the photodiode 10 through the receiving lens 8. After receiving the laser light, the photodiode 10 feeds back a signal to the receiving board 9, and the receiving board 9 feeds back a signal to the main board 11. The main board 11 calculates the distance information of the observed object according to the time interval between emitting the laser light and receiving the laser light and the speed of light;

[0051] (3) The main board 11 outputs the calculated distance information to the OLED display screen 25 for display. The image on the OLED display screen 25 can be projected onto the focal plane of the aperture and the eyepiece group 6 through the OLED lens group 26 and the image transfer prism group 7 in sequence. The human eye can directly observe the distance information of the display screen OLED projected onto the focal plane of the aperture and the eyepiece group 6 through the eyepiece group 6.

[0052] The specific use process of the monocular ranging telescope 100 of this embodiment is as follows:

[0053] By pressing the button on the keypad 3 to issue a distance measurement command, the mainboard 11 drives the pulse laser emitting diode 13 on the transmitting board 12 to emit a pulse laser with a very short duration, and at the same time starts the counting clock. After the emitted laser passes through the emitting lens 16, a collimated laser beam is obtained. The collimated beam is characterized by a very small laser divergence angle, and the spot size of the cross section perpendicular to the emission direction changes slowly with the distance. After the emitted laser passes through the propagation distance L, it reaches the telescope system aiming target surface. At this time, part of the laser will be reflected back, and part of the reflected laser will be focused on the photosensitive area of ​​the photodiode 10 chip through the telescope objective lens 1, the image transfer prism group 7 and the receiving lens 8. The received light signal is converted into an electrical signal through the photodiode 10. After the mainboard 11 receives the electrical signal, the counting clock is turned off at the same time. Finally, the round-trip pulse time difference t=N×(1 / f) measured by the clock counter is used to calculate the distance to be measured L=1 / 2×c×t, where N is the number of clock cycles measured by the counter, and f is the counting clock frequency. In general, in order to avoid the occurrence of singular values ​​or to ensure the accuracy of distance measurement, multiple measurements can be taken to obtain the average value to obtain the distance information L. The distance measurement information is transmitted to the OLED display screen 25 through the data communication module on the main board 11. The image on the OLED display screen 25 can be projected onto the focal plane of the aperture and the eyepiece group 6 through the OLED lens group 26 and the image transfer prism group 7 in sequence. The human eye can directly observe the distance information of the display screen OLED projected onto the focal plane of the aperture and the eyepiece group 6 through the eyepiece group 6, thereby realizing the functions of telescopic observation and fast and accurate imaging display of distance measurement information that are only available in current products with multiple tubes with only one tube.

[0054] In the description of the present invention, it should be noted that the terms "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0055] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A monocular ranging telescope, characterized in that: It includes a housing, a telescope module, a transmitting module, a receiving module, an imaging module and a control module; the telescope module includes an eyepiece group and an objective lens, and the eyepiece group and the objective lens are respectively arranged in the telescope tube of the housing; The transmitting module comprises a transmitting diode, a transmitting lens barrel and a transmitting lens, wherein the transmitting lens barrel is located in the telescope barrel, the objective lens is provided with a notch corresponding to the transmitting lens barrel, and the transmitting lens barrel passes through the notch; The emitting diode and the emitting lens are respectively arranged in the emitting lens barrel, and the light-emitting surface of the light-emitting chip of the emitting diode is located on the focus and the optical axis of the emitting lens; The receiving module comprises a relay prism group, a receiving lens, a receiving plate and a photodiode. The relay prism group is fixed between the eyepiece group and the objective lens. The relay prism group can split the light entering from the objective lens to the receiving lens. The photodiode is electrically connected to the receiving plate. The photosensitive area of ​​the chip of the photodiode is located at the focus of the receiving lens. The imaging module includes an LCD transmission screen or the imaging module includes an aperture, an OLED lens group and an OLED display screen, the LCD transmission screen is arranged between the eyepiece group and the image relay prism group, and the LCD transmission screen is located on the focal plane of the eyepiece group; the image of the OLED display screen can be projected onto the aperture and the focal plane of the eyepiece group through the OLED lens group and the image relay prism group in sequence; The control module includes a keypad, a main board and a transmitting board, wherein the keypad is fixed on the housing, and a key for controlling the main board is arranged on the keypad, and the transmitting board and the receiving board are electrically connected to the main board, and triggering the key can make the main board emit laser through the transmitting board and the light emitting diode, and after the main board receives the echo signal fed back by the receiving board, calculate the distance information fed back by the echo signal, and display the distance information on the LCD transmission screen or the OLED display screen; The eyepiece adjustment structure includes a moving tube and a fixed tube, the fixed tube is fixed on the housing, the eyepiece group is fixed in the moving tube, the moving tube is inserted in the fixed tube, a spiral curved groove is provided on the side wall of the fixed tube, a guide pin is provided on the side wall of the moving tube, the guide pin is located in the curved groove, and the guide pin and the curved groove are slidably matched; the position of the focal plane of the eyepiece group can be adjusted by rotating the moving tube; It also includes a lens adjustment structure, which includes an inner cylindrical barrel and an outer cylindrical barrel, the receiving lens is fixed on the inner cylindrical barrel, the inner wall of the outer cylindrical barrel is fixedly provided with a spiral slide groove, and the side wall of the inner cylindrical barrel is provided with a protruding guide column, and the protruding guide column is slidably matched with the slide groove; the focal plane of the receiving lens can be adjusted by rotating the inner cylindrical barrel.

2. The monocular ranging telescope according to claim 1, characterized in that: It also includes an extinction channel arranged between the image transfer prism group and the objective lens, and the inner wall of the extinction channel is provided with extinction lines.

3. The monocular ranging telescope according to claim 1, characterized in that: The mainboard has the functions of data calculation and processing and communicating with the LCD transmission screen or the OLED display screen and driving the display.

4. The monocular ranging telescope according to claim 1, characterized in that: The aperture is a circular opening.

5. A ranging imaging method, characterized in that: The monocular ranging telescope according to any one of claims 1 to 4 comprises the following steps: (1) The laser is emitted through the emitting diode, and the laser passes through the emitting lens and is reflected by the observed object, and then enters the emitting lens barrel through the objective lens; (2) The laser light entering the transmitting lens barrel is split by the image transfer prism group and then falls on the photosensitive area of ​​the photodiode chip through the receiving lens. After receiving the laser light, the photodiode feeds back a signal to the receiving board, and the receiving board feeds back a signal to the main board. The main board calculates the distance information of the observed object according to the time interval between emitting the laser light and receiving the laser light and the speed of light; (3) The main board outputs the calculated distance information to an LCD transmission screen or an OLED display screen for display. The LCD transmission screen is located on the focal plane of the eyepiece group. The image on the OLED display screen can be projected onto the aperture and the focal plane of the eyepiece group through the OLED lens group and the image transfer prism group in sequence.

Images