Ranging telescope device
By introducing a light sensor and a luminous flux adjuster into the range-based telescope device, the light amount of ambient light and display light is dynamically adjusted, and the problem of difficult display characters is difficult to recognize under high and low light conditions is solved, and the brightness of the display characters is appropriately maintained, and the user's recognition ability is improved.
Patent Information
- Application Number
- CN202311130013.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-31
- Publication Date
- 2025-02-28
AI Technical Summary
In the distance measuring telescope device, the display characters are difficult to recognize under high or low light conditions. The existing methods such as increasing the brightness of the display characters or reducing the brightness of the field of view have problems such as increasing energy consumption, decreasing service life and color distortion.
A range-testing telemetry device including an objective lens group, an image rotation module, an eyepiece group, a display and a luminous flux adjuster is designed to sense the ambient light intensity through a light sensor, and control the luminous flux adjuster to adjust the light amount of ambient light or display light to ensure that the relative brightness of the display characters is within an appropriate range.
Regardless of the strong or weak ambient light, the relative brightness of the display characters of the range-test telescope device can be maintained within an appropriate range, improving the user's ability to recognize characters and avoiding the energy consumption and service life problems caused by existing methods.
Smart Images
Figure CN119535761A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a distance measuring telescope device. Background Art
[0002] In the actual use of the ranging telescope, it is often encountered that the brightness in the field of view is too high, resulting in the display (OLED) characters (text and / or symbols) being unclear, which greatly affects the use of the ranging telescope. The most commonly used method to solve this problem is to increase the brightness of the display characters or reduce the brightness in the field of view, but these methods also inevitably bring new troubles.
[0003] Increasing the brightness of display characters will not only increase energy consumption, but also reduce the service life of the display and greatly increase the chance of display burn-in. At the same time, there is a limit to the improvement of display character brightness and it cannot be increased indefinitely, so the improvement of this method is limited.
[0004] Reducing the brightness within the field of view is an effective method to improve the recognition of display characters. By coating a film with specific optical properties on the surface of the objective lens or prism, the red light transmittance of the display characters is increased while the background light transmittance is reduced (the red light is only an example and is not a limitation), thereby increasing the relative brightness of the display characters. However, this will cause the background color of the telescope to be blue and the color to be distorted; at the same time, when observing under low light intensity conditions, the display characters are prone to being too bright and blocking the field of view. Therefore, this method cannot meet the brightness requirements of display characters under high and low light intensities at the same time. Summary of the invention
[0005] In view of this, an object of the present invention is to provide a distance measuring telescope device that is convenient for users to identify.
[0006] According to one embodiment of the present invention, a distance measuring telescope device comprises an objective lens group, an image transfer module, an eyepiece group, a display and a light flux adjuster. Ambient light passes through the objective lens group, the image transfer module and the eyepiece group in sequence to form an ambient light path. The display is used to generate display light, and the display light passes through the image transfer module and the eyepiece group in sequence. The light flux adjuster is arranged between the objective lens group and the eyepiece group and is located in the ambient light path, and is used to adjust the amount of the ambient light or the display light passing through the eyepiece group.
[0007] In another embodiment, the ranging telescopic device further includes a light sensor, which is electrically connected to the light flux adjuster. The light sensor is used to sense the intensity of the ambient light to control the light flux adjuster to adjust the amount of the ambient light or the display light passing through the eyepiece group; wherein the image relay module can be a prism module or a plurality of lens modules.
[0008] In another embodiment, the light flux adjuster is a variable aperture or a transmissive display. The light flux adjuster can be disposed on the light incident side, the light emitting side of the image relay module or inside the image relay module.
[0009] In another embodiment, when the light sensor measures that the ambient light intensity is greater than a first default value, the aperture of the variable aperture is reduced to reduce the amount of ambient light passing through the eyepiece group; when the light sensor measures that the ambient light intensity is less than a second default value, the aperture of the variable aperture is expanded to increase the amount of ambient light passing through the eyepiece group, wherein the first default value is greater than or equal to the second default value.
[0010] In another embodiment, the difference between the maximum aperture and the minimum aperture of the variable aperture is 40.2% to 44.4% of the maximum aperture; the difference between the maximum aperture and the minimum aperture of the variable aperture is 69.6% to 76.9% of the minimum aperture. Or the aperture value of the range-finding telescope device when the aperture of the variable aperture is maximum is 54.8% to 60.6% of the aperture value of the range-finding telescope device when the aperture of the variable aperture is minimum. Or the ratio of the entrance pupil diameter when the aperture of the variable aperture is minimum to the entrance pupil diameter when the aperture of the variable aperture is maximum is in the range of 0.548 to 0.606; the ratio of the exit pupil diameter when the aperture of the variable aperture is minimum to the exit pupil diameter when the aperture of the variable aperture is maximum is in the range of 0.548 to 0.606.
[0011] In another embodiment, when the light sensor measures that the ambient light intensity is greater than a first default value, the light transmittance of the transmissive display is reduced to reduce the amount of ambient light passing through the eyepiece group; when the light sensor measures that the ambient light intensity is less than a second default value, the light transmittance of the transmissive display is increased to increase the amount of ambient light passing through the eyepiece group, wherein the first default value is greater than or equal to the second default value.
[0012] In another embodiment, the light transmittance of the transmissive display ranges from 31% to 85%.
[0013] In another embodiment, the light transmittance of only a part of the area of the transmissive display changes.
[0014] In another embodiment, the light transmittance of the transmissive display changes only in a region away from an optical axis.
[0015] In another embodiment, the distance measuring telescope device further includes a light transmitter and a light receiver. The light transmitter generates a distance measuring light, which passes through the image relay module and the objective lens group to reach a target object and then is reflected by the target object. The distance measuring light reflected by the target object passes through the objective lens group to reach the light receiver.
[0016] The distance measuring telescope device of the present invention can maintain the relative brightness of the characters on the display within an appropriate range regardless of whether the ambient light is strong or weak, so as to facilitate recognition by the user. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:
[0018] Figure 1 2 is a schematic structural diagram of a distance measuring telescope device according to a first embodiment of the present invention.
[0019] Figure 2 2 is a schematic structural diagram of a distance measuring telescope device according to a second embodiment of the present invention. DETAILED DESCRIPTION
[0020] See also Figure 1 The ranging telescope device 100 of the first embodiment of the present invention includes an objective lens group 110, an eyepiece group 120, a light transmitter 160, a light receiver 170, a display 150, an image relay module 180, a light flux adjuster 130, a light sensor 140, a condenser 171 and a plurality of reflectors 151 and 161.
[0021] When the user uses the ranging telescope device 100 to observe the surrounding environment, the ambient light can reach the user's eyes through the objective lens group 110, the light flux adjuster 130, the image transfer module 180, and the eyepiece group 120 for observation. At the same time, the light transmitter 160 transmits the ranging light, which reaches the target object (not shown) through the reflector 161, the image transfer module 180, the light flux adjuster 130, and the objective lens group 110, and is reflected back to the ranging telescope device 100 by the target object, and then reaches the light receiver 170 through the objective lens group 110 and the condenser 171, and then the distance of the target object is calculated by the time difference between the emission and reception of the ranging light. On the other hand, the display 150 can generate display light, which reaches the user's eyes through the reflector 151, the image transfer module 180, and the eyepiece group 120, and provides important information (such as the measured distance, etc.) to the user in the form of characters for reference.
[0022] The light emitter 160 may be a laser diode (LD) or other light sources. The light receiver 170 and the light sensor 140 may be photoelectric diodes (PD), photomultiplier tubes (PMT), charge coupled devices (CCD), avalanche photodiodes (APD), or single-photon avalanche diodes (SPAD). The display 150 may be an organic light-emitting diode (OLED), a liquid crystal display (LCD), or other display devices.
[0023] As mentioned above, both the ambient light and the display light will reach the user's eyes through the image transfer module 180 and the eyepiece assembly 120, so the user can see the surrounding scenery and the characters on the display 150 at the same time. In this embodiment, the light flux adjuster 130 is a variable aperture, which is arranged between the objective lens assembly 110 and the image transfer module 180, and is used to adjust the amount of ambient light that reaches the user's eyes through the eyepiece assembly 120. The light sensor 140 is arranged beside the light flux adjuster 130 and is electrically connected to the light flux adjuster 130, and is used to detect the intensity of the ambient light and transmit the measured light intensity information to a controller (not shown). When the light sensor 140 detects that the ambient light is too strong, it will affect the user's recognition of the characters on the display 150, so the controller is used to reduce the aperture of the variable aperture to reduce the amount of light passing, thereby reducing the amount of light passing through the ambient light, ensuring that the user can clearly recognize the characters on the display 150. On the contrary, when the light sensor 140 detects that the ambient light is too weak, the controller will enlarge the aperture of the variable aperture to increase the amount of light passing through, so that the scene in the field of view is brighter without being affected by the brightness of the characters on the display 150.
[0024] Specifically, when the light sensor 140 measures that the ambient light intensity is greater than a first default value, the aperture of the variable aperture (i.e., the light flux adjuster 130) is reduced to reduce the amount of ambient light reaching the user's eyes through the eyepiece assembly 120; conversely, when the light sensor 140 measures that the ambient light intensity is less than a second default value, the aperture of the variable aperture is enlarged to increase the amount of ambient light reaching the user's eyes through the eyepiece assembly 120, wherein the first default value is greater than or equal to the second default value. The difference between the maximum aperture and the minimum aperture of the variable aperture is 40.2% to 44.4% of the maximum aperture, and the difference between the maximum aperture and the minimum aperture of the variable aperture is 69.6% to 76.9% of the minimum aperture. In this embodiment, when the light sensor 140 measures that the ambient light intensity is greater than 20,000 lux, the aperture of the variable aperture (i.e., the light flux adjuster 130) is reduced to reduce the amount of ambient light reaching the user's eyes through the eyepiece assembly 120. When the light sensor 140 measures that the ambient light intensity is less than 1000 lux, the aperture of the variable aperture is enlarged to increase the amount of ambient light reaching the user's eyes through the eyepiece assembly 120. In this embodiment, the maximum aperture of the variable aperture is 6.34 mm and the minimum aperture is 3.66 mm.
[0025] The aperture change of the above variable aperture can also be designed to be manually adjusted, that is, if the user thinks that the ambient light is too strong or too weak, the aperture size of the variable aperture can be adjusted manually.
[0026] It is worth noting that the present embodiment is described by taking the fixed-focus telescope device 100 as an example (i.e., the focal length is fixed). When the aperture of the variable aperture changes, the aperture value (F-number), vignetting, entrance pupil diameter and exit pupil diameter will be affected, but the field of view (i.e., the field of view FOV is fixed). In the present embodiment, the aperture value of the telescope device 100 when the variable aperture is maximum is 54.8% to 60.6% of the aperture value of the telescope device 100 when the variable aperture is minimum. In addition, as mentioned above, the focal length and field of view of the telescope device 100 remain unchanged, but the entrance pupil diameter (exit pupil diameter) will change. In the present embodiment, the ratio of the entrance pupil diameter (exit pupil diameter) when the variable aperture is minimum to the entrance pupil diameter (exit pupil diameter) when the variable aperture is maximum is in the range of 0.548 to 0.606.
[0027] See also Figure 2 The distance measuring telescope device 200 of the second embodiment of the present invention comprises an objective lens group 110, an eyepiece group 120, a light transmitter 160, a light receiver 170, a display 150, an image relay module 180, a light flux adjuster 230, a light sensor 140, a condenser 171, and a plurality of reflectors 151 and 161. The same components as those of the first embodiment will be given the same component numbers and their descriptions will be omitted.
[0028] In this embodiment, the image transfer module 180 includes a plurality of prisms 181, 182, and 183. The light flux adjuster 230 is a transmissive display, which is disposed between the prism 181 and the prism 182. The light transmittance of the transmissive display is adjustable, and is used to adjust the amount of ambient light that reaches the user's eyes through the eyepiece assembly 120. The light sensor 140 is disposed next to the light flux adjuster 230, and is used to detect the intensity of the ambient light. When the light sensor 140 detects that the ambient light is too strong, the light transmittance of the transmissive display will be reduced to reduce the amount of light passing through, so as to ensure that the user can clearly identify the characters on the display 150. Conversely, when the light sensor 140 detects that the ambient light is too weak, the light transmittance of the transmissive display will be increased to increase the amount of light passing through, so that the user can observe the scene in the field of view without being affected by the brightness of the characters on the display 150.
[0029] Specifically, when the ambient light intensity measured by the light sensor 140 is greater than the first default value, the light transmittance of the transmissive display (i.e., the light flux adjuster 230) is reduced to reduce the amount of ambient light reaching the user's eyes through the eyepiece assembly 120; conversely, when the ambient light intensity measured by the light sensor 140 is less than the second default value, the light transmittance of the transmissive display is increased to increase the amount of ambient light reaching the user's eyes through the eyepiece assembly 120, wherein the first default value is greater than or equal to the second default value. In this embodiment, when the ambient light intensity measured by the light sensor 140 is greater than 20,000 lux, the light transmittance of the transmissive display is reduced to reduce the amount of ambient light reaching the user's eyes through the eyepiece assembly 120. When the ambient light intensity measured by the light sensor 140 is less than 1,000 lux, the light transmittance of the transmissive display is increased to increase the amount of ambient light reaching the user's eyes through the eyepiece assembly 120. In this embodiment, the light transmittance of the transmissive display varies in a range of 31% to 85%.
[0030] Similarly, the light transmittance of the above transmissive display can also be designed to be manually adjusted, that is, if the user thinks that the ambient light is too strong or too weak, the light transmittance of the transmissive display can be adjusted manually.
[0031] The third embodiment of the present invention is substantially the same as the second embodiment, except that only the light transmittance of a part of the area of the transmissive display (i.e., the light flux adjuster 230) is adjusted, rather than the light transmittance of the entire transmissive display. As mentioned above, both the ambient light and the display light will reach the user's eyes through the image transfer module 180 and the eyepiece assembly 120, so the user can see the surrounding scenery and the characters of the display 150 at the same time, but the characters will only occupy a small part of the entire visual field, so there is no need to change the light transmittance of the entire transmissive display, and only the light transmittance of a part of the area needs to be adjusted accordingly (the position of the area corresponding to the visual field is the position of the display characters in the visual field). When the ambient light is too strong or too dark, by adjusting the light transmittance of the area, the user can achieve the purpose of normally recognizing the characters of the display and observing the surrounding scenery. In this embodiment, the part of the area (i.e., the area with adjustable light transmittance) is far away from the optical axis of the transmissive display. In other words, when the ambient light is too bright, the transmittance of the outer peripheral area of the transmissive display is mainly lower than the transmittance of the area near the central axis (optical axis) of the transmissive display.
[0032] In the first embodiment, the light flux adjuster 130 is disposed on the light incident side of the image relay module 180, and in the second and third embodiments, the light flux adjuster 230 is disposed inside the image relay module 180, but the present invention is not limited thereto. In the first embodiment, the light flux adjuster 130 may also be disposed inside the image relay module 180, and in the second and third embodiments, the light flux adjuster 230 may also be disposed on the light incident side of the image relay module 180. In addition, in some embodiments, the light flux adjuster may also be disposed on the light exiting side of the image relay module to adjust the amount of light passing through the eyepiece assembly.
[0033] In the first, second and third embodiments, the image transfer module 180 is a prism module, but the present invention is not limited thereto. In some embodiments, the image transfer module 180 can also be a plurality of lens modules, which are used to change the paths of the ambient light and the display light so that the light finally passes through the eyepiece assembly and reaches the user's eyes.
[0034] The embodiments of the present invention described above are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A distance measuring telescope device, characterized in that: include: Objective lens set; Image transfer module; An eyepiece assembly, wherein the ambient light sequentially passes through the objective lens assembly, the image transfer module and the eyepiece assembly to form an ambient light path; A display, used to generate display light, the display light sequentially passing through the image relay module and the eyepiece assembly; The light flux adjuster is arranged between the objective lens group and the eyepiece lens group and located in the ambient light path, and is used for adjusting the light quantity of the ambient light or the display light passing through the eyepiece lens group.
2. The distance measuring telescope device according to claim 1, characterized in that: It further includes a light sensor, which is electrically connected to the light flux adjuster. The light sensor is used to sense the intensity of the ambient light to control the light flux adjuster to adjust the amount of the ambient light or the display light passing through the eyepiece assembly; wherein the image transfer module can be a prism module or a plurality of lens modules.
3. The distance measuring telescope device according to claim 1 or 2, characterized in that: The light flux adjuster is a variable aperture or a transmissive display. The light flux adjuster can be arranged on the light incident side, the light emitting side of the image relay module or inside the image relay module.
4. The distance measuring telescope device according to claim 3, characterized in that: When the light sensor measures that the ambient light intensity is greater than a first default value, the aperture of the variable aperture is reduced to reduce the amount of ambient light passing through the eyepiece group; when the light sensor measures that the ambient light intensity is less than a second default value, the aperture of the variable aperture is expanded to increase the amount of ambient light passing through the eyepiece group, wherein the first default value is greater than or equal to the second default value.
5. The distance measuring telescope device according to claim 3, characterized in that: The difference between the maximum aperture and the minimum aperture of the variable aperture is 40.2% to 44.4% of the maximum aperture; the difference between the maximum aperture and the minimum aperture of the variable aperture is 69.6% to 76.9% of the minimum aperture; or When the aperture of the variable aperture is at its maximum, the aperture value of the distance measuring telescope device is 54.8% to 60.6% of the aperture value of the distance measuring telescope device when the aperture of the variable aperture is at its minimum; or The ratio of the entrance pupil diameter when the variable aperture is minimum to the entrance pupil diameter when the variable aperture is maximum is in the range of 0.548 to 0.606; the ratio of the exit pupil diameter when the variable aperture is minimum to the exit pupil diameter when the variable aperture is maximum is in the range of 0.548 to 0.
606.
6. The distance measuring telescope device according to claim 3, characterized in that: When the light sensor measures that the ambient light intensity is greater than a first default value, the light transmittance of the transmissive display is reduced to reduce the amount of ambient light passing through the eyepiece group; when the light sensor measures that the ambient light intensity is less than a second default value, the light transmittance of the transmissive display is increased to increase the amount of ambient light passing through the eyepiece group, wherein the first default value is greater than or equal to the second default value.
7. The distance measuring telescope device according to claim 6, characterized in that: The light transmittance of the transmissive display varies in the range of 31% to 85%.
8. The distance measuring telescope device according to claim 7, characterized in that: The light transmittance of only a part of the area of the transmissive display changes.
9. The distance measuring telescope device according to claim 8, characterized in that: The light transmittance of the transmissive display changes only in a region away from an optical axis.
10. The distance measuring telescope device according to claim 1 or 2, characterized in that: Also includes: A light transmitter generates a distance measuring light, and the distance measuring light reaches a target object through the image relay module and the objective lens group and is then reflected by the target object; A light receiver, wherein the distance measuring light reflected by the target object reaches the light receiver through the objective lens group.