Low-light night vision glasses

Abstract

The invention provides low-light night vision glasses, and relates to the technical field of wearable optical equipment. The low-light night vision glasses are used for enhancing the light sensing function of the retina under low light, and are light-weight wearable equipment for enhancing the visual ability in an extremely low illumination environment. The low-light night vision glasses mainly comprise a glasses main body, a low-light acquisition sensor, an analog-to-digital conversion module and a power supply module. Wherein the glasses main body comprises lenses with semi-transparent and semi-reflecting films, glasses legs and two micro displays positioned on the inner sides of the lenses. The micro display displays a picture acquired by the low-light acquisition sensor, the picture is amplified and then reflected by the semi-transparent and semi-reflective film on the inner side of the lens, and an amplified virtual image superposed on a real environment is formed in front of the visual field of a user. Through the high-sensitivity low-light imaging and virtual-real superposition display technology, the visual perception ability of a user at night or in a dark and weak light environment is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wearable optical equipment, in particular to a micro-light night vision glasses. BACKGROUND

[0002] Patients with retinal pigmentosa have difficulty in seeing objects at night or in low light conditions due to the progressive apoptosis of retinal rod cells, which seriously affects the quality of life.

[0003] Traditional micro-light night vision devices are mainly used in the military field, and their core principle is to passively receive and amplify the weak light (including near-infrared light) in the environment, and convert it into a bright image visible to the human eye.

[0004] However, the above-mentioned micro-light night vision device has high technical threshold and high equipment unit price, and is difficult to apply to a large number of patients with retinal pigmentosa and night blindness. In addition, other traditional night vision devices (such as head-mounted night vision devices) also have problems such as bulky size, limited field of view, and inability to superimpose with the real scene.

[0005] Therefore, the present application proposes a micro-light night vision glasses to at least solve one or more of the above problems. SUMMARY

[0006] (I) Technical problems to be solved

[0007] In view of the deficiencies of the prior art, the present application provides a micro-light night vision glasses, which at least solves one or more of the problems of bulky size, high technical threshold, and high equipment cost of traditional night vision devices.

[0008] (II) Technical solutions

[0009] To achieve the above purpose, the present application is realized by the following technical solutions:

[0010] A micro-light night vision glasses, comprising:

[0011] A glasses main body, the glasses main body comprising a lens coated with a semi-transparent and semi-reflective film on the side of the human eye;

[0012] A micro-light collection sensor for collecting a video image signal;

[0013] An analog-to-digital conversion module for converting the video image signal into a digital signal readable by the glasses main control board in real time;

[0014] A glasses main control board for processing and amplifying the video image signal;

[0015] A micro display for displaying the video image amplified by the glasses main control board;

[0016] The micro-light collection sensor, the analog-digital conversion module, the glasses main control board and the micro display are sequentially and electrically connected.

[0017] In one embodiment, the glasses main body further comprises a frame, and the frame is provided with two temples.

[0018] In one embodiment, the ratio of the transmittance to the reflectance of the semi-transmissive and semi-reflective film is 7:3.

[0019] In one preferred embodiment, the micro-light collection sensor is arranged at the end of the temple, and the optical axis of the micro-light collection sensor is coaxial with the temple.

[0020] Preferably, the micro-light collection sensor has two and is symmetrically arranged.

[0021] In one preferred embodiment, the minimum illumination perception capability of the micro-light collection sensor is less than or equal to 0.0001 Lux.

[0022] In one preferred embodiment, the micro-light collection sensor is configured with a 2.7-13.5mm electric zoom lens.

[0023] In one preferred embodiment, the micro-light collection sensor includes but is not limited to a Sony IMAX291 sensor.

[0024] In one embodiment, the micro-light night vision glasses further comprise an eye tracker module for identifying the gaze point of the user and realizing interactive control; the eye tracker module is electrically connected to the micro-light collection sensor.

[0025] In one preferred embodiment, the inner eye tracker module is integrated in the frame beam.

[0026] Preferably, the eye tracker module includes but is not limited to an Eye Tracker5 eye movement instrument module.

[0027] In one preferred embodiment, the micro-light night vision glasses further comprise a power module for providing electric energy, and the power module is electrically connected to the micro-light collection sensor, the analog-digital conversion module, the glasses main control board, the micro display and the eye tracker module, respectively.

[0028] (III) Beneficial Effects

[0029] The present application provides a micro-light night vision glasses. Compared with the prior art, the present application has the following beneficial effects:

[0030] The micro-light night vision glasses provided in the application comprise a glasses main body, a micro-light collection sensor, an analog-digital conversion module, a glasses main control board and a micro display connected in sequence, wherein the glasses main body comprises a lens plated with a semi-transparent and semi-reflective film on the side of the human eye. The micro display displays the picture collected by the micro-light collection sensor, and the picture is reflected by the semi-transparent and semi-reflective film on the inner side of the lens after being amplified, thereby forming an enlarged virtual image superimposed on the real environment in front of the user's visual field. The micro-light night vision glasses provided in the application are more portable, and the micro-light in the real environment can be directly observed, thereby solving the problems of the traditional night vision equipment (such as a head-mounted night vision device), such as large volume, limited visual field, inability to superimpose on the real environment, high equipment cost and the like, and supporting virtual-real picture superimposition display and intelligent interactive control capability. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 FIG. 1 is a structural schematic diagram of the micro-light night vision glasses according to an embodiment of the present application;

[0033] Figure 2 FIG. 2 is a schematic diagram of the connection of some modules in the micro-light night vision glasses according to an embodiment of the present application;

[0034] Figure 3 FIG. 3 is a working principle diagram of the micro-light night vision glasses according to an embodiment of the present application.

[0035] In the drawings: 1 - glasses main body; 11 - frame; 12 - leg; 13 - lens; 2 - micro-light collection sensor; 3 - digital-analog conversion module; 4 - glasses main control board; 5 - micro display; 6 - power module; 7 - eye tracking instrument module. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0037] Patients with retinal pigment degeneration are difficult to see objects in the night or weak light conditions due to the progressive apoptosis of retinal rod cells, which seriously affects the quality of life.

[0038] Traditional low-light night vision devices are mainly applied in military field, and its core principle is to passively receive and amplify the weak light (including near-infrared light) in the environment, and convert it into a bright image visible to the human eye. The core component is an image intensifier tube. The low light is focused on the photocathode by the objective lens, and the photons excite electrons to form an electron image corresponding to the original light intensity distribution. Then these electrons are accelerated under the high-voltage electric field in the tube and bombard the micro channel plate (MCP). The MCP is composed of millions of micro channels, and the high-speed electrons hitting the inner wall of the channel will trigger an avalanche effect, generating a large number of secondary electrons to achieve exponential amplification of the electron current. Finally, the amplified dense electron stream hits the fluorescent screen at the end under the action of a strong electric field, and the electron energy is converted into bright green visible light, which reconstructs and significantly enhances the original scene image, and then the image is observed by the human eye through the eyepiece. The whole process does not need to actively emit light, but relies on the photoelectric conversion of the photocathode, the electron multiplication of the MCP, and the electro-optical conversion of the fluorescent screen, and the high-voltage electric field provides energy to drive amplification. The final output of the iconic green image takes advantage of the human eye's sensitivity to green light in low light to achieve clear night vision with the least amount of light.

[0039] However, the technical threshold of this technical product is high, the unit price of the equipment is high, and it is difficult to apply to a large number of patients with retinitis pigmentosa and night blindness.

[0040] The micro-light night vision glasses provided by the embodiments of the present application at least solve one or more technical problems of the traditional night vision device, such as large size, high technical threshold, and high equipment cost, and achieve the purpose of effectively improving the visual perception ability of users in the night or weak light environment by using light-weight and simple equipment.

[0041] The micro-light night vision glasses provided by the present application are suitable for use by patients with retinitis pigmentosa, patients with night blindness and other disease patients, and are also suitable for use by normal users who need to see in a micro-light environment.

[0042] The technical solutions in the embodiments of the present application are used to solve the above technical problems, and the general idea is as follows:

[0043] First, a micro-light acquisition sensor is used to acquire a video image signal in a micro-light environment, then the signal is subjected to digital-to-analog processing and amplification, and a micro display is used to display the amplified video image, and finally the image is reflected to the user's eyeball through a semi-transmissive and semi-reflective film to form a superimposed and coincident amplified virtual image on the real environment field of view, so that the user can see in the micro-light environment.

[0044] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings of the specification and specific embodiments.

[0045] Embodiment 1:

[0046] The micro-light night vision glasses provided in the embodiment are micro-light night vision glasses for enhancing the light sensing function of the retina under low light. Figures 1-3 As shown in the figure, the glasses body 1 comprises a lens 13 coated with a semi-transparent and semi-reflective film on the side of the human eye.

[0047] The glasses body 1 comprises a lens frame 11, lens legs 12 arranged on both sides of the lens frame 11, and a lens 13 installed in the lens frame 11 and coated with a semi-transparent and semi-reflective film on the inner side (the side close to the eyes of the user).

[0048] The micro-light collection sensor 2 is used to collect a video image signal.

[0049] The analog-digital conversion module 3 is used to convert the video image signal into a digital signal readable and displayable by the glasses main control board 4 in real time.

[0050] The glasses main control board 4 is used to process and amplify the video image signal.

[0051] The micro display 5 is used to display the amplified video image.

[0052] The micro-light collection sensor 2, the analog-digital conversion module 3, the glasses main control board 4, and the micro display 5 are sequentially and electrically connected.

[0053] Specifically,

[0054] The glasses body 1 comprises a lens frame 11, lens legs 12 arranged on both sides of the lens frame 11, and a lens 13 installed in the lens frame 11 and coated with a semi-transparent and semi-reflective film on the inner side (the side close to the eyes of the user).

[0055] In one embodiment, the ratio of the transmittance to the reflectance of the semi-transparent and semi-reflective film is 7:3, which ensures the transmittance of ambient light and enhances the brightness of the virtual picture.

[0056] The micro-light collection sensor 2 is used to collect a video image signal in a micro-light environment.

[0057] In one embodiment, the micro-light collection sensor 2 has two and is symmetrically installed at the ends of the outer sides of the lens legs 12 on both sides of the glasses, and the optical axis is coaxial with the lens legs 12, so as to ensure that the collection angle matches the natural line of sight of the human eye.

[0058] In a preferred embodiment, the micro-light collection sensor 2 has a minimum illumination sensing capability of ≤0.0001 Lux and can image in a nearly completely dark environment.

[0059] Preferably, the micro-light acquisition sensor 2 includes but is not limited to Sony IMAX291 sensor, which meets the balance of performance and cost. Sony IMAX291 sensor, which is at the industry-leading level in resolution, frame rate and performance under low light conditions, has high performance; and supports multiple interface standards, is easy to integrate into existing systems, and is easy to integrate; is suitable for security monitoring, industrial cameras, medical imaging and other fields, and has a wide range of application scenarios.

[0060] In a more preferred embodiment, the micro-light acquisition sensor 2 is configured with a 2.7-13.5mm motorized zoom lens, which has a focal length range consistent with the human eye viewing distance range and supports multiple scene adaptation from wide angle to long focal length. In specific implementation, the lens zoom can control the focal length through eye movement tracking or physical buttons. It should be noted that adjusting the focal length through the zoom lens achieves the effect of "zooming in" or "zooming out" on the shooting subject, greatly improving the flexibility and convenience of shooting.

[0061] The analog-to-digital conversion module 3 converts the image signal collected by the micro-light acquisition sensor 2 into a digital signal readable and displayed by the glasses main body 1 in real time, and transmits it to the glasses main control board 4 for signal processing. In specific implementation, the analog-to-digital conversion module 3 is embedded in the temple 12 or the frame 11 (not shown in the figure).

[0062] The glasses main control board 4 is used for processing and amplifying the above-mentioned video image signal.

[0063] In specific implementation, the glasses main control board 4 is embedded in the temple 12 or the frame 11 (not shown in the figure) and is electrically connected to the output end of the above-mentioned micro-light acquisition sensor 2, for signal processing and signal amplification of the video image signal collected by the micro-light acquisition sensor 2 in the micro-light environment. Specifically, the glasses main control board 4 mainly receives image signals from the signal source, processes and converts them, and then drives the display (such as a liquid crystal panel) to display the final image. The main control board generally integrates CPU, control bus, peripherals, micro power supply module, storage and other components, and the working process is roughly as follows: input→processing→output. The programming related to the input, processing and output of signals during the operation of the main control board is a conventional technical means in this field, and will not be described here.

[0064] The micro display 5 is used to display the picture processed and amplified by the glasses main control board 4.

[0065] The micro display 5 is electrically connected to the output end of the above-mentioned glasses main control board 4, and is used to display the image signal collected by the micro-light acquisition sensor 2 after signal processing and amplification by the glasses main control board 4.

[0066] In an embodiment, the micro display 5 has two, which are symmetrically arranged on the inner side of the lens 13 described above, in order to better project the image displayed by the micro display 5 onto the lens 13. The specific position is not limited, for example, the micro display 5 can be arranged on the edge of the upper end of the inner side of the lens 13. The display screen of the micro display 5 is reflected to the user's eyeball through the half-mirror after optical magnification, and an overlapped magnified virtual image is formed on the real environment field of view, so that the user can see in the dim light environment.

[0067] The power module 6 provides power for the glasses main body 1, the micro light collection sensor 2, the analog-to-digital conversion module 3, etc. In specific implementation, the power module 6 is respectively electrically connected with the micro light collection sensor 2, the analog-to-digital conversion module 3, the glasses main control board 4, and the micro display 5, and is integrated in the inside of the temple 12 (not shown in the figure).

[0068] Preferably, the power module 6 supports an external battery pack, and can realize 24-hour uninterrupted work through the connection of a power bank.

[0069] In order to further realize the intelligence of the above-mentioned micro light night vision glasses, in a preferred embodiment, the above-mentioned micro light night vision glasses further comprise an eyeball tracker module 7, as shown in Figure 1 .

[0070] The eyeball tracker module 7 is used to identify the user's fixation point and realize interactive control. In specific implementation, the eyeball tracker module 7 is integrated in the inside of the crossbeam of the frame 11, which is used to identify the user's fixation point and realize interactive control, so as to realize the automatic focusing of the electric zoom lens.

[0071] The eyeball tracker module 7 is electrically connected with the control part of the electric zoom lens of the micro light collection sensor 2, and the user's fixation point signal collected by the eyeball tracker module 7 is used to control the zoom of the electric zoom lens. The signal input, processing, output and other related programming of this process are conventional technical means in this field, and will not be described here.

[0072] Preferably, the eyeball tracker module 7 comprises an Eye Tracker5 eye tracker module.

[0073] The use principle of the micro light night vision glasses proposed in the above-mentioned embodiments of the present application is described as follows:

[0074] After the micro-light collection sensor 2 collects the video image signal of the object in the micro-light environment, the image signal collected by the micro-light collection sensor 2 is converted into a readable digital signal in real time by the analog-digital conversion module 3, and is transmitted to the glasses main control board 4 for signal processing and amplification. The picture processed and amplified by the glasses main control board 4 is displayed by the micro display 5, and is reflected by the semi-transparent and semi-reflective film on the inner side of the lens 13, forming a magnified virtual image superimposed on the real environment in front of the user's field of view, as shown in the figure. Figure 3

[0075] In the working process, the power module 6 supplies power to the above-mentioned components. In order to realize automatic focusing of the electric zoom lens, the eyeball tracking instrument module 7 is used to identify the user's gaze point and realize interactive control, so as to control the focal length adjustment of the zoom lens when the micro-light collection sensor 2 collects signals.

[0076] Compared with the prior art, the micro-light night vision glasses have the following beneficial effects:

[0077] 1. The micro-light night vision glasses provided by the application comprise a glasses main body and a micro-light collection sensor, an analog-digital conversion module, a glasses main control board and a micro display connected in sequence, wherein the glasses main body comprises a lens with a semi-transparent and semi-reflective film plated on the side of the human eye. The micro display displays the picture collected by the micro-light collection sensor, and the picture is reflected by the semi-transparent and semi-reflective film on the inner side of the lens after being amplified, forming a magnified virtual image superimposed on the real environment in front of the user's field of view. The micro-light night vision glasses are more portable, and the user can directly view the micro-light of the real scene, solving the problems of the traditional night vision equipment (such as a head-mounted night vision instrument), such as large volume, limited field of view, inability to superimpose on the real scene, high equipment cost and the like, while supporting virtual-real picture superimposition display and intelligent interactive control capability.

[0078] 2. The micro-light night vision glasses provided by the application can image in extremely dark environments through the micro-light collection sensor with an ultra-high sensitivity of ≤0.0001 Lux, breaking through the illumination limitation of traditional equipment.

[0079] 3. The micro-light night vision glasses provided by the application coaxially install the micro-light collection sensor on the temple, and realize the fusion of the real scene and the enhanced picture by combining the semi-transparent and semi-reflective film virtual image superposition, without cutting the field of view.

[0080] 4. The micro-light night vision glasses provided by the application support gaze point control (such as zooming and menu operation) through the eyeball tracking module, can realize intelligent interactive expansion, and improve the operation efficiency.

[0081] 5. The micro-light night vision glasses provided by the application are modularly integrated (the sensor is installed on the temple, and the tracking instrument is arranged on the cross beam), avoiding the cumbersomeness of external devices, and being more lightweight.

[0082] ​6. The night vision glasses proposed in the application have lower cost (reduced by ten times) compared with the traditional electronic multiplication night vision device, so that ordinary consumers can also purchase them.

[0083] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0084] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A low-light-level night vision glasses, characterized in that: include: A glasses body (1), comprising a lens (13) coated with a semi-transparent and semi-reflective film on the side of the human eye; A low-light acquisition sensor (2) is used to acquire video image signals; An analog-to-digital conversion module (3) converts the video image signal into a digital signal that can be read and displayed by the glasses main control board (4) in real time; A glasses main control board (4), used for processing and amplifying the video image signal; A micro display (5) for displaying the video image magnified by the glasses main control panel (4); The low-light collection sensor (2), analog-to-digital conversion module (3), glasses main control board (4), and micro-display (5) are electrically connected in sequence.

2. The low-light-level night vision glasses according to claim 1, characterized in that: The glasses body (1) further comprises a frame (11) and temples (12) arranged on both sides of the frame (11).

3. The low-light-level night vision glasses according to claim 1, characterized in that: The ratio of transmittance to reflectivity of the semi-transparent and semi-reflective film is 7:

3.

4. The low-light-level night vision glasses according to claim 2, characterized in that: The low-light collection sensor (2) is arranged at the end of the temple (12), and the optical axis of the low-light collection sensor (2) is coaxial with the temple (12).

5. The low-light-level night vision glasses according to claim 4, characterized in that: The minimum illumination sensing capability of the low-light collection sensor (2) is less than or equal to 0.0001 Lux.

6. The low-light-level night vision glasses according to claim 4, characterized in that: The low-light collection sensor (2) is equipped with a 2.7-13.5 mm electric zoom lens.

7. The low-light-level night vision glasses according to claim 1, characterized in that: The low-light collection sensor (2) includes a Sony IMAX291 sensor.

8. The low-light-level night vision glasses according to any one of claims 1 to 7, characterized in that: The low-light-level night vision glasses further include an eye tracker module (7) for identifying a user's gaze point and implementing interactive control; the eye tracker module (7) is electrically connected to the low-light-level collection sensor (2).

9. The low-light-level night vision glasses according to claim 8, characterized in that: The eye tracker module (7) comprises an EyeTracker5 eye tracker module.

10. The low-light-level night vision glasses according to claim 8, characterized in that: The low-light-level night vision glasses further include: a power module (6) for providing electrical energy, wherein the power module (6) is electrically connected to the low-light-level acquisition sensor (2), the analog-to-digital conversion module (3), the glasses main control board (4), the microdisplay (5), and the eye tracker module (7).

Images