Imaging module and display device
By introducing a temperature detection unit and a driving mechanism into the imaging module, the anti-laser lens blocks the laser light, solving the problem of overheating and damage to the photosensitive element in the laser environment and extending the service life of the imaging module.
Patent Information
- Application Number
- CN202420022394.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-04
AI Technical Summary
In a laser environment, the photosensitive element is prone to overheating and causing damage, and the existing imaging modules are insufficient in performance and cannot effectively avoid damage.
An imaging module is designed, including a temperature detection unit, an anti-laser lens and a driving mechanism. By detecting the temperature of the image sensor, when the temperature exceeds a threshold, the driving anti-laser lens moves from its original position to between the image sensor and the first lens. , block the laser and avoid excessive temperature.
It effectively avoids damage to the image sensor due to excessive temperature and extends the service life of the imaging module.
Smart Images
Figure CN222169921U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of imaging technology, and in particular to an imaging module and a display device. Background Art
[0002] The imaging module is a device that receives light signals through a photosensitive element and converts the light signals into electrical signals. In a laser environment, the laser will overheat the photosensitive element, causing damage to the photosensitive element. Therefore, the performance of existing imaging modules needs to be improved. Utility Model Content
[0003] In view of this, the purpose of the present application is to provide an imaging module that avoids damage to the photosensitive element.
[0004] Based on the above purpose, the present application provides an imaging module, which includes:
[0005] First lens;
[0006] An image sensor is disposed on one side of the first lens and converts the optical signal passing through the first lens into an electrical signal;
[0007] a temperature detection unit, configured to detect the temperature of the image sensor;
[0008] Second lens;
[0009] a driving mechanism, electrically connected to the temperature detection unit, and driving the second lens to move from the first position to the second position when the temperature detection unit detects that the temperature exceeds a first threshold;
[0010] Wherein, the second lens is an anti-laser lens, and the second position is located between the first lens and the image sensor.
[0011] In one embodiment, the anti-laser lens comprises:
[0012] The lens substrate has a surface which is compounded with a curing layer, a laser absorption layer and a strengthening protective film layer in sequence.
[0013] In one embodiment, the imaging module further includes:
[0014] The filter unit is disposed between the first lens and the image sensor.
[0015] In one embodiment, the imaging module further includes:
[0016] The signal conversion unit is electrically connected to the image sensor, receives the electrical signal, and converts the electrical signal from an image analog signal into an image digital signal.
[0017] In one embodiment, the imaging module further includes:
[0018] The image processing unit is electrically connected to the signal conversion unit, receives the image digital signal, and processes the image digital signal.
[0019] In one embodiment, the imaging module further includes:
[0020] The storage unit is electrically connected to the image processing unit, receives and stores the processed image digital signal.
[0021] In one embodiment, the driving mechanism comprises:
[0022] a translation drive assembly, the translation drive assembly being connected to the second lens, and the translation drive assembly driving the second lens to translate from the first position to a second position when the temperature detection unit detects that the temperature exceeds a first threshold; or
[0023] A rotation driving component is connected to the second lens, and when the temperature detection unit detects that the temperature exceeds a first threshold, the rotation driving component drives the second lens to rotate from the first position to the second position.
[0024] In one embodiment, the imaging module further includes:
[0025] A laser detection unit, wherein the laser detection unit is electrically connected to the driving mechanism, and when the laser detection unit fails to detect the laser, the driving mechanism drives the second lens to move from the second position to the first position.
[0026] In one embodiment, the driving mechanism drives the second lens to move from the first position to the second position when the laser detection unit detects the laser and the temperature detection unit detects that the temperature exceeds a first threshold.
[0027] Based on the same inventive concept, the present application also discloses a display device, which includes a display panel and an imaging module as described in any one of the above items, wherein the display panel is electrically connected to the imaging module for displaying an image captured by the imaging module.
[0028] Compared with the prior art, the imaging module provided in the present application is provided with a temperature detection unit, an anti-laser lens and a driving mechanism. The temperature of the image sensor is detected by the temperature detection unit, and the driving mechanism drives the anti-laser lens to between the first lens and the image sensor when the temperature detection unit detects that the temperature exceeds the first threshold. This can effectively prevent the image sensor from being damaged due to excessive temperature and extend the service life of the imaging module. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0030] Figure 1 It is a structural schematic diagram of an existing imaging module;
[0031] Figure 2 A schematic diagram of the structure of an imaging module provided in a preferred embodiment of the present application Figure 1 ;
[0032] Figure 3 A schematic diagram of the structure of an imaging module provided in a preferred embodiment of the present application Figure 2 ;
[0033] Figure 4 A schematic diagram of the structure of a driving mechanism provided in a preferred embodiment of the present application;
[0034] Figure 5 A schematic diagram of the structure of a driving mechanism provided in another preferred embodiment of the present application;
[0035] Figure 6 A schematic diagram of the film structure of the second lens provided in a preferred embodiment of the present application;
[0036] Figure 7 A schematic diagram of the structure of an imaging module provided in another preferred embodiment of the present application;
[0037] Figure 8 A schematic diagram of the structure of an imaging module provided in another preferred embodiment of the present application;
[0038] Fig. 9 A schematic diagram of the structure of an imaging module provided in another preferred embodiment of the present application;
[0039] Fig.10 A schematic diagram of the structure of an imaging module provided in another preferred embodiment of the present application;
[0040] Fig.11 A schematic structural diagram of an imaging module provided in another preferred embodiment of the present application.
[0041] Marking Description:
[0042] 1. Lens; 10. First lens; 20. Image sensor; 30. Temperature detection unit; 40. Second lens; 41. Lens substrate; 42. Curing layer; 43. Laser absorption layer; 44. Strengthening protective film layer; 50. Driving mechanism; 51. Cylinder; 52. Telescopic rod; 53. Motor; 54. Output shaft; 55. Adapter rod; 60. Filter unit; 71. Signal conversion unit; 72. Image processing unit; 73. Storage unit; 80. Laser detection unit. DETAILED DESCRIPTION
[0043] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.
[0044] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0045] Reference Figure 1 The imaging module generally includes a lens 1 and an image sensor 20. The image sensor 20 is arranged on one side of the lens 1 to convert the light signal passing through the lens 1 into an electrical signal. After these electrical signals are processed, they are displayed on the screen in the form of images.
[0046] After long-term research, the inventors found that in some shooting scenes, there are lasers in the environment. Since lasers are more concentrated and have a higher energy density than ordinary light, their irradiation on photosensitive elements (such as image sensors) will cause the image sensors to overheat, affecting the service life of the photosensitive elements. In severe cases, the photosensitive elements may even be damaged. Based on this, the present application provides an imaging module solution to solve the above technical problems, with specific reference to the following embodiments.
[0047] Reference Figure 2 As shown, an embodiment of the present application discloses an imaging module, which includes: a first lens 10, an image sensor 20, a temperature detection unit 30, a second lens 40 and a driving mechanism 50.
[0048] The image sensor 20 is arranged on one side of the first lens 10, and converts the optical signal passing through the first lens 10 into an electrical signal. The temperature detection unit 30 detects the temperature of the image sensor 20. The driving mechanism 50 is electrically connected to the temperature detection unit 30. When the temperature detection unit 30 detects that the temperature exceeds the first threshold, the driving mechanism 50 drives the second lens 40 to move from the first position to the second position; wherein the second lens 40 is an anti-laser lens, and the second position is located between the first lens 10 and the image sensor 20.
[0049] Reference Figure 3 As shown, when the imaging assembly is working normally, the second lens 40 is located at the first position, which is one side of the optical path of the imaging assembly and does not affect the position where the image sensor 20 receives the light passing through the first lens 10. When the temperature detection unit 30 detects that the temperature of the image sensor 20 exceeds the first threshold, the driving mechanism 50 drives the second lens 40 to move from the first position to between the first lens 10 and the image sensor 20. Figure 2 ; Anti-laser lenses are used to block laser light from entering the image sensor 20 to prevent the image sensor 20 from overheating. At the same time, the image sensor 20 can normally acquire light signals and realize imaging functions.
[0050] The imaging module provided in the present application is provided with a temperature detection unit 30, an anti-laser lens and a driving mechanism 50. The temperature of the image sensor 20 is detected by the temperature detection unit 30. When the temperature detection unit 30 detects that the temperature exceeds a first threshold value, the driving mechanism 50 drives the anti-laser lens to between the first lens 10 and the image sensor 20. This can effectively prevent the image sensor 20 from being damaged due to excessive temperature and extend the service life of the imaging module.
[0051] Optionally, the temperature detection unit 30 is a thermistor sensor, a thermocouple sensor, etc., and may be contact type or non-contact type.
[0052] Reference Figure 4 As shown, in one embodiment, the driving mechanism 50 includes a translation driving component, which is connected to the second lens 40. When the temperature detection unit 30 detects that the temperature exceeds the first threshold, the translation driving component drives the second lens 40 to translate from the first position to the second position.
[0053] Optionally, the second lens 40 has the same shape and size as the first lens 10. When the second lens 40 is located at the second position, the orthographic projection of the second lens 40 on the first lens 10 coincides with the first lens 10.
[0054] Optionally, the translation drive assembly includes a cylinder 51, a telescopic rod 52 of the cylinder 51 is connected to the second lens 40, and the cylinder 51 drives the telescopic rod 52 to translate the second lens 40, so that the second lens 40 switches between the first position and the second position. In another embodiment, the translation drive assembly can be an electric cylinder, etc.
[0055] Reference Figure 5 As shown, in another embodiment, the driving mechanism 50 includes a rotation driving assembly, the rotation driving assembly is connected to the second lens 40, and when the temperature detection unit 30 detects that the temperature exceeds the first threshold, the rotation driving assembly drives the second lens 40 to rotate from the first position to the second position. Optionally, the rotation driving assembly includes a motor 53, the output shaft 54 of the motor 53 is connected to the second lens 40 through a transfer rod 55, the output shaft 54 and the transfer rod 55 are perpendicular to each other, the motor 53 drives the output shaft 54 to rotate, thereby driving the second lens 40 to rotate around the output shaft 54, so that the second lens 40 is switched between the first position and the second position. In another embodiment, the rotation driving assembly can be a rotary cylinder, etc.
[0056] Reference Figure 6 As shown, in one embodiment, the anti-laser lens includes a lens substrate 41, and the surface of the lens substrate 41 is compounded with a solidified layer 42, a laser absorption layer 43 and a strengthened protective film layer 44 in sequence. Optionally, the lens substrate 41 includes optical glass, artificial crystal or other materials, and the laser absorption layer 43 is made by uniformly coating a laser absorber on the solidified layer 42 to absorb laser. Among them, the solidified layer 42 is used to bond the laser absorption layer 43 to the lens substrate 41 to prevent the laser absorption layer 43 from falling off; the strengthened protective film layer 44 is used to increase the surface hardness of the lens substrate 41 to prevent the laser absorption layer 43 from being scratched. Compared with the anti-laser lens directly coated on the lens surface in the related art, it is more durable and has a better anti-laser effect.
[0057] Optionally, the laser absorber may include nano-carbon balls, nano-carbon tubes, polyurethane resin, carbon black, graphite or eutectic composition, etc., and the above materials have the function of absorbing laser.
[0058] Optionally, the reinforced protective film layer 44 is a composite of thermoplastic polyurethane elastomer and acrylic polyurethane resin. Thermoplastic polyurethane elastomer has excellent elasticity, tensile strength, elongation and tension, which can effectively alleviate external impact, so that the lens will not break when subjected to high-intensity impact and collision; acrylic polyurethane resin has a faster curing speed and better mechanical strength, which can increase the hardness of the lens surface, thereby preventing the reinforced protective film layer 44 from being scratched and losing the protective effect on the laser absorption layer 43.
[0059] Reference Figure 7As shown, in one embodiment, the imaging module further includes a filter unit 60, which is disposed between the first lens 10 and the image sensor 20. The filter unit 60 is used to filter excess light and reduce chromatic aberration and color banding. Optionally, the filter unit 60 is a filter or a filter.
[0060] Reference Figure 8 As shown, in one embodiment, the imaging module further includes a signal conversion unit 71, which is electrically connected to the image sensor 20, receives the electrical signal, and converts the electrical signal from an image analog signal into an image digital signal. Optionally, the signal conversion unit 71 includes an analog circuit for transmitting, transforming, processing, amplifying, measuring and displaying the analog signal.
[0061] Reference Fig. 9 As shown, in one embodiment, the imaging module further includes an image processing unit 72, which is electrically connected to the signal conversion unit 71, receives the image digital signal, and processes the image digital signal, including compression, color correction, color restoration, etc. The image processing unit 72 can be specifically an image processor ISP, etc.
[0062] Reference Fig.10 As shown, in one embodiment, the imaging module further includes a storage unit 73, which is electrically connected to the image processing unit 72, receives the processed image digital signal, and stores it for subsequent display and other operations.
[0063] Reference Fig.11 As shown, in one embodiment, the imaging module further includes a laser detection unit 80, which is electrically connected to the driving mechanism 50. When the laser detection unit 80 cannot detect the laser, the driving mechanism 50 drives the second lens 40 to move from the second position to the first position. That is, under the condition that there is no laser, the second lens 40 is removed from the optical path to avoid the second lens 40 affecting the imaging quality. Preferably, the laser detection unit 80 is located between the first lens 10 and the second lens 40, and can more accurately detect whether there is laser in the imaging optical path.
[0064] Reference Fig.11 As shown, in one embodiment, the driving mechanism 50 drives the second lens 40 to move from the first position to the second position when the laser detection unit 80 detects the laser and the temperature detection unit 30 detects that the temperature exceeds the first threshold value, thereby avoiding misjudgment caused by a single condition, achieving double insurance, and avoiding erroneous operation.
[0065] In another embodiment, the driving mechanism 50 drives the second lens 40 to move from the second position to the first position when the temperature detection unit 30 detects that the temperature is lower than a second threshold value, wherein the second threshold value is smaller than the first threshold value.
[0066] Another embodiment of the present application discloses a display device, which includes a display panel and an imaging module in any of the above embodiments, wherein the display panel is electrically connected to the imaging module and is used to display an image captured by the imaging module. The display device can be mounted on a smart device (such as a mobile phone, VR device, computer, television, car display, etc.).
[0067] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.
[0068] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
[0069] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.
Claims
1. An imaging module, It is characterized in that include: First lens; An image sensor is disposed on one side of the first lens and converts the optical signal passing through the first lens into an electrical signal; a temperature detection unit, configured to detect the temperature of the image sensor; Second lens; a driving mechanism, electrically connected to the temperature detection unit, and driving the second lens to move from the first position to the second position when the temperature detection unit detects that the temperature exceeds a first threshold; Wherein, the second lens is an anti-laser lens, and the second position is located between the first lens and the image sensor.
2. The imaging module according to claim 1, It is characterized in that The anti-laser lens comprises: The lens substrate has a surface which is compounded with a curing layer, a laser absorption layer and a strengthening protective film layer in sequence.
3. The imaging module according to claim 1, It is characterized in that The imaging module also includes: The filter unit is disposed between the first lens and the image sensor.
4. The imaging module according to claim 1, It is characterized in that The imaging module also includes: The signal conversion unit is electrically connected to the image sensor, receives the electrical signal, and converts the electrical signal from an image analog signal into an image digital signal.
5. The imaging module according to claim 4, It is characterized in that The imaging module also includes: The image processing unit is electrically connected to the signal conversion unit, receives the image digital signal, and processes the image digital signal.
6. The imaging module according to claim 5, It is characterized in that The imaging module also includes: The storage unit is electrically connected to the image processing unit, receives and stores the processed image digital signal.
7. The imaging module according to claim 1, It is characterized in that The driving mechanism comprises: a translation drive assembly, the translation drive assembly being connected to the second lens, and the translation drive assembly driving the second lens to translate from the first position to a second position when the temperature detection unit detects that the temperature exceeds a first threshold; or A rotation driving component is connected to the second lens, and when the temperature detection unit detects that the temperature exceeds a first threshold, the rotation driving component drives the second lens to rotate from the first position to the second position.
8. The imaging module according to claim 1, It is characterized in that The imaging module also includes: A laser detection unit, wherein the laser detection unit is electrically connected to the driving mechanism, and when the laser detection unit fails to detect the laser, the driving mechanism drives the second lens to move from the second position to the first position.
9. The imaging module according to claim 8, It is characterized in that The driving mechanism drives the second lens to move from the first position to the second position when the laser detection unit detects the laser and the temperature detection unit detects that the temperature exceeds a first threshold.
10. A display device, It is characterized in that It comprises a display panel and an imaging module as described in any one of claims 1 to 9, wherein the display panel is electrically connected to the imaging module and is used to display an image captured by the imaging module.