Automobile data recorder

Abstract

The invention relates to the technical field of automobile data recorders, in particular to an automobile data recorder, which is characterized in that an automatic adjustment lens structure allows the automobile data recorder to perform real-time adjustment according to different illumination and environmental conditions, and can provide optimal visual angle setting in various driving scenes; wherein the design structure of the camera module avoids a common high distortion phenomenon in a traditional lens; by reasonably configuring the shape and the refractive index of the lens, the geometric integrity of an image can be kept under a large visual angle, so that shot sceneries and objects are not distorted, meanwhile, a non-gluing design is adopted, performance reduction caused by environmental changes (such as temperature and humidity) is avoided, the lens can still keep stable optical performance and image quality under different use conditions, and the lens can be widely applied to the field of camera shooting. The problems of aging and optical degradation possibly occurring in long-time use of the glued lens are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of driving recorders, and more particularly to a driving recorder. Background Art

[0002] With the continuous increase in the number of cars, driving recorders, as important driving safety equipment, are gradually being widely used in vehicles. The driving recorders currently on the market usually have basic functions such as video recording and accident playback. Traditional driving recorders have the following problems: Most dashcam lenses are fixed at a specific angle, so they cannot be adjusted in real time according to needs in different driving environments (such as highways, city streets, etc.), which greatly affects the recording effect and field of view; under different lighting conditions or driving speeds, existing lenses cannot be adjusted adaptively, resulting in unstable recording quality and unable to ensure clear recording of important images under various conditions; existing dashcam lenses are generally composed of cemented lenses, and this structure has defects such as optical performance degradation, internal contamination, and difficulty in cleaning and repair when facing temperature changes, humidity fluctuations, and long-term use; Therefore, a new type of driving recorder is needed, which has the function of automatically identifying environmental changes and automatically adjusting the shooting angle of the lens, so as to improve the quality and safety of driving records, and at the same time meet the imaging quality of the glued lens without the need to use glued lenses, thereby solving the shortcomings of the lenses of traditional driving recorders. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a driving recorder to solve the problems existing in the above-mentioned background technology.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: a driving recorder, comprising: a recorder body and a mounting assembly for connecting the recorder body and a vehicle; the mounting assembly is detachably connected to the recorder body; the recorder body is provided with: a camera module for photographing the exterior of the vehicle, a sensor module for detecting the ambient light intensity and a self-adjusting module for adjusting the angle of the camera module; the sensor module is detachably connected to the outer side of the recorder body, and the sensor module is electrically connected to the self-adjusting module; the self-adjusting module is fixedly connected to the recorder body; the camera module is rotatably connected to the recorder body; the camera module is fixedly connected to the output end of the self-adjusting module; the camera module includes a limiting assembly for limiting the lens.

[0005] Optionally, the camera module also includes: a lens barrel, a first lens, a second lens, a third lens, a fourth lens and an imaging element; the lens barrel is rotatably connected to the recorder body; one end of the lens barrel is placed in the recorder body and fixedly connected to the output end of the self-adjusting module; the other end of the lens passes through the inner wall of the recorder body and is placed on the outside of the recorder body; the first lens, the second lens, the third lens and the fourth lens are respectively arranged in the lens in sequence along the optical axis from the object side to the image side; the first lens, the second lens, the third lens and the fourth lens are respectively abutted against the limit assembly; an aperture member is arranged between the first lens and the second lens.

[0006] Optionally, the limiting assembly includes: a first limiting member, a second limiting member, a third limiting member and a fourth limiting member; the first limiting member is detachably connected to the lens barrel; the second limiting member is fixedly connected to the lens barrel; the second limiting member is provided with a first clamping portion; the first clamping portion is clamped with the aperture member; the first limiting member and the second limiting member cooperate with the lens barrel to form a first limiting partition for limiting and accommodating the first lens; the first lens is limitedly accommodated in the first limiting partition and can be respectively abutted against the first limiting member and the second limiting member; the third limiting member The lens barrel is fixedly connected to the third position-limiting member; a second clamping portion is arranged on one end of the third position-limiting member; the second clamping portion and the second position-limiting member cooperate to form a second position-limiting partition for limiting and accommodating the second lens; the fourth position-limiting member is fixedly connected to the lens barrel; the other end of the third position-limiting member cooperates with the fourth position-limiting member to form a third position-limiting partition for limiting and accommodating the third lens and the fourth lens; the third lens and the fourth lens are respectively position-limited and accommodated in the third position-limiting partition; the third lens abuts against the third position-limiting member, and the fourth lens abuts against the fourth position-limiting member.

[0007] Optionally, a color filter is further arranged between the fourth lens and the imaging element; the color filter is detachably connected to the lens barrel.

[0008] Optionally, the self-adjusting module includes: a transmission rod for driving the camera module to rotate, a fixed-end gear disc for driving the transmission rod to rotate, a rotating-end gear disc and a driving member for driving the fixed-end gear disc to rotate; one end of the transmission rod is transmission-connected to the camera module; the fixed-end gear disc is fixedly connected to the other end of the transmission rod; the driving member is fixedly connected to the recorder body; the rotating-end gear disc is arranged on the output end of the driving member; a first end face tooth is provided on the fixed-end gear disc; a second end face tooth matched with the first end face tooth is provided on the rotating-end gear disc; the first end face tooth on the fixed-end gear disc is meshed with the second end face tooth on the rotating-end gear disc for transmission connection.

[0009] Optionally, the sensing module includes an ambient light sensor; the ambient light sensor is arranged on a side of the recorder body close to the object being photographed; and the ambient light sensor is electrically connected to the driving component.

[0010] Optionally, a control module is also included; the control module is electrically connected to the camera module, the sensor module and the self-adjusting module respectively.

[0011] Optionally, the mounting assembly includes: a connector for connecting to a car, a connecting handle and a mounting base for mounting the recorder body; the recorder body is detachably connected to the mounting base; one end of the connecting handle is rotatably connected to the mounting base; and the other end of the connecting handle is rotatably connected to the connector.

[0012] Optionally, the first lens is a meniscus lens with negative optical focal power; the first lens is convex to the object side; the second lens is a biconvex lens with positive optical focal power; the third lens is a biconvex lens with positive optical focal power; the fourth lens is a meniscus lens with negative optical focal power; the fourth lens is convex to the image side; the distance between the image plane of the third lens and the object plane of the fourth lens is 0.02 mm.

[0013] In summary, the present invention has the following beneficial effects: 1. The automatic adjustment lens structure of the present invention allows the driving recorder to be adjusted in real time according to different lighting and environmental conditions, and can provide the optimal viewing angle setting in various driving scenarios; through the automatic lens adjustment function, the driver does not need manual operation and can focus more on driving; this design reduces the distraction caused by adjusting the lens, thereby reducing the risk of traffic accidents caused by distraction and enhancing the overall driving safety.

[0014] 2. The design structure of the camera module of the present invention avoids the high distortion phenomenon commonly seen in traditional lenses; by rationally configuring the shape and refractive index of the lens, the geometric integrity of the image can be maintained at a wide viewing angle, so that the captured scenery and objects are not distorted. At the same time, the non-glued design is adopted to avoid performance degradation due to environmental changes (such as temperature and humidity). The lens can still maintain stable optical performance and image quality under different usage conditions, thus solving the aging and optical degradation problems that may occur in glued lenses during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic cross-sectional view of the main structure of the present invention; Figure 3 is a schematic diagram of the specific structure installation of the camera module of the present invention; Figure 4 It is a schematic diagram of the lens structure installation of the camera module of the present invention; Figure 5 is a lens optical path diagram of the camera module of the present invention; Figure 6 is a chromatic aberration curve diagram of an optical performance curve of a lens of a camera module of the present invention; Figure 7 is an astigmatism curve diagram of the optical performance curve of the lens of the camera module of the present invention; Figure 8 is a distortion curve diagram of an optical performance curve of a lens of a camera module of the present invention; Fig. 9 is an MTF curve diagram of the optical performance curve of the lens of the camera module of the present invention; Fig.10 It is a wavefront distortion curve diagram of the optical performance curve of the lens of the camera module of the present invention.

[0016] In the figure: 1. recorder body; 2. installation assembly; 21. connector; 22. connecting handle; 23. mounting base; 3. camera module; 31. lens barrel; 32. first lens; 33. second lens; 34. third lens; 35. fourth lens; 36. imaging element; 37. aperture element; 4. sensor module; 41. ambient light sensor; 5. self-adjusting module; 51. transmission rod; 52. fixed end gear disc; 53. rotating end gear disc; 54. driving element; 6. limiting assembly; 61. first limiting element; 62. second limiting element; 621. first clamping part; 63. third limiting element; 631. second clamping part; 64. fourth limiting element; 65. first limiting partition; 66. second limiting partition; 67. third limiting partition; 68. color filter; 7. control module. DETAILED DESCRIPTION

[0017] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. Several embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0018] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0019] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "vertical", "horizontal", "left", "right", "above", "below" and similar expressions are for illustrative purposes only, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] The present invention provides a driving recorder, such as Figure 1 As shown, it includes: a recorder body 1 and a mounting component 2 for connecting the recorder body 1 and a vehicle; the mounting component 2 is detachably connected to the recorder body 1; the recorder body 1 is provided with: a camera module 3 for photographing the exterior of the vehicle, a sensor module 4 for detecting the intensity of ambient light and a self-adjusting module 5 for adjusting the angle of the camera module 3; the sensor module 4 is detachably connected to the outer side of the recorder body 1, and the sensor module 4 is electrically connected to the self-adjusting module 5; the self-adjusting module 5 is fixedly connected to the recorder body 1; the camera module 3 is rotatably connected to the recorder body 1; the camera module 3 is fixedly connected to the output end of the self-adjusting module 5; the camera module 3 includes a limiting component 6 for limiting the lens.

[0022] In the first embodiment, Figure 3-4 As shown, the lens of the camera module 3 is a fixed-focus lens; the sensor module 4 is arranged on a side of the recorder body 1 close to the shooting surface, and the sensor module 4 recognizes and detects the ambient light of the recorder body 1 in real time. When the ambient light is too dark or too bright, a signal is sent to the self-adjusting module 5. After receiving the signal, the self-adjusting module 5 adjusts the shooting angle of the camera module 3 to increase the shooting field of view to increase the shooting quality and image clarity, or reduces the shooting field of view to reduce the brightness to avoid overexposure; the risk of blurred recorded images due to various environmental factors is reduced; the video quality is significantly improved, and the demand and related costs for post-image processing are reduced.

[0023] In other embodiments, a plurality of function buttons are provided on the recorder body 1, including functions such as "start recording", "pause recording", "playback", "on and off", etc., to further adapt to the user's usage habits; at the same time, an SD card storage port is provided on one side of the recorder body 1, and the SD card can be inserted into the driving recorder body 1, so that the recorded file can be saved locally for easy review.

[0024] Optionally, a display screen is provided on the side of the recorder body 1 away from the camera module 3, and the display screen is used to display the captured image in real time. The user can adjust the position of the recorder body 1 according to the actual captured image so as to capture a more complete and better image and increase scene adaptability.

[0025] Furthermore, the camera module 3 also includes: a lens barrel 31, a first lens 32, a second lens 33, a third lens 34, a fourth lens 35 and an imaging element 36; the lens barrel 31 is rotatably connected to the recorder body 1; one end of the lens barrel 31 is placed in the recorder body 1 and fixedly connected to the output end of the self-adjusting module 5; the other end of the lens passes through the inner wall of the recorder body 1 and is placed on the outside of the recorder body 1; the first lens 32, the second lens 33, the third lens 34 and the fourth lens 35 are respectively arranged in the lens in sequence from the object side to the image side along the optical axis; the first lens 32, the second lens 33, the third lens 34 and the fourth lens 35 are respectively abutted against the limit assembly 6; an aperture element 37 is arranged between the first lens 32 and the second lens 33.

[0026] Specifically, Figure 3 As shown, through the limit assembly 6 on the lens barrel 31, the four lenses can achieve the imaging quality of the glued lens without the need for gluing, and at the same time there will be no defects of the glued lens, avoiding the performance degradation caused by environmental changes (such as temperature and humidity), and further improving the service life and adaptability of the camera module 3.

[0027] Furthermore, the limiting assembly 6 includes: a first limiting member 61, a second limiting member 62, a third limiting member 63 and a fourth limiting member 64; the first limiting member 61 is detachably connected to the lens barrel 31; the second limiting member 62 is fixedly connected to the lens barrel 31; a first clamping portion 621 is provided on the second limiting member 62; the first clamping portion 621 is clamped with the aperture member 37; the first limiting member 61 and the second limiting member 62 cooperate with the lens barrel 31 to form a first limiting partition 65 for limiting and accommodating the first lens 32; the first lens 32 is limitedly accommodated in the first limiting partition 65, and can be respectively abutted against the first limiting member 61 and the second limiting member 62; the third limiting member 63 is fixedly connected to the lens barrel 31; a second clamping portion 631 is provided on one end of the third limiting member 63; the second clamping portion 631 and the second limiting member 62 cooperate to form a second limiting partition 66 for limiting and accommodating the second lens 33; the fourth limiting member 64 is fixedly connected to the lens barrel 31; the other end of the third limiting member 63 cooperates with the fourth limiting member 64 to form a third limiting partition 67 for limiting and accommodating the third lens 34 and the fourth lens 35; the third lens 34 and the fourth lens 35 are respectively limited and accommodated in the third limiting partition 67; the third lens 34 abuts against the third limiting member 63, and the fourth lens 35 abuts against the fourth limiting member 64.

[0028] Specifically, Figure 3 As shown, by arranging the first limiting member 61 and the second limiting member 62 on the lens barrel 31, the first lens 32 can be firmly clamped and received in the first limiting partition 65 and be located on the side of the lens barrel 31 close to the object side; by the first clamping portion 621 on the first limiting member 61, the first clamping portion 621 is adapted to the concave notch of the aperture member 37, so that the aperture member 37 can be firmly installed in the lens barrel 31; by arranging the second limiting member 62 and the third limiting member 63, a second limiting partition 66 is formed in cooperation, so that the second lens 33 can abut against the second limiting member 62 and the third limiting member 63, so that the second lens 33 of Shudie can be firmly installed in the lens barrel 31; by arranging the third limiting member 63 and the fourth limiting member 64, a third limiting partition 67 is formed, as shown Figure 4 As shown, the third lens 34 is a biconvex lens, and the fourth lens 35 is a meniscus lens. Through the limiting action of the third limiting member 63 and the fourth limiting member 64, the distance between the image plane of the third lens 34 and the object plane of the fourth lens 35 is 0.02 mm. Without gluing the third lens 34 and the fourth lens 35, the imaging effect of the glued lens is achieved, the service life of the camera module 3 is improved, and the production cost and production cycle are reduced.

[0029] In this embodiment, if Figure 3As shown, the lens barrel 31 , the second limiting member 62 , the third limiting member 63 and the fourth limiting member 64 are integrally formed, thereby ensuring the overall structural strength of the camera module 3 .

[0030] Furthermore, a color filter 68 is disposed between the fourth lens 35 and the imaging element 36 ; the color filter 68 is detachably connected to the lens barrel 31 .

[0031] Specifically, the color filter 68 is designed to be flat to ensure that the paths of light entering and leaving are not disturbed. The color filter 68 is made of a suitable material to minimize the loss of light by the color filter 68.

[0032] Furthermore, the self-adjusting module 5 includes: a transmission rod 51 for driving the camera module 3 to rotate, a fixed-end gear disc 52 for driving the transmission rod 51 to rotate, a rotating-end gear disc 53 for driving the fixed-end gear disc 52 to rotate, and a driving member 54; one end of the transmission rod 51 is transmission-connected to the camera module 3; the fixed-end gear disc 52 is fixedly connected to the other end of the transmission rod 51; the driving member 54 is fixedly connected to the recorder body 1; the rotating-end gear disc 53 is arranged on the output end of the driving member 54; a first end face tooth is provided on the fixed-end gear disc 52; a second end face tooth matched with the first end face tooth is provided on the rotating-end gear disc 53; the first end face tooth on the fixed-end gear disc 52 is meshed with the second end face tooth on the rotating-end gear disc 53 for transmission connection.

[0033] In implementation 2, if Figure 2 As shown, the ambient light in the current working environment of the recorder body 1 is detected by the sensor module 4. When the ambient light intensity is high, the rotating end gear disc 53 on the output end is driven by the driving member 54 to rotate in the opposite direction by a preset distance, and the rotating end gear disc 53 is meshed and connected with the fixed end gear disc 52 for transmission, thereby driving the transmission rod 51 to rotate, thereby driving the lens barrel 31 of the camera module 3 to rotate a certain negative angle with the horizontal line as a reference, lowering the lens barrel 31 to reduce the shooting field of view and avoid overexposure. The preset distance of reverse rotation can be set and adjusted manually; In the third embodiment, Figure 2 As shown, the ambient light in the current working environment of the recorder body 1 is detected by the sensor module 4. When the ambient light intensity is low, the driving member 54 drives the rotating end gear plate 53 on the output end to rotate forward by a preset distance, and the rotating end gear plate 53 is meshed and connected with the fixed end gear plate 52 for transmission, thereby driving the transmission rod 51 to rotate, thereby driving the lens barrel 31 of the camera module 3 to rotate a certain positive angle with the horizontal line as a reference, raising the lens barrel 31 to increase the shooting field of view and avoid the occurrence of too dark shooting; the preset distance of forward rotation can be set and adjusted manually.

[0034] In another embodiment, it also includes a position encoder for identifying the current position angle of the camera module 3 and a limit switch for preventing the transmission rod 51 from rotating beyond the maximum value; the position encoder is arranged on one side of the driving member 54, and is used to identify and measure the distance of the forward rotation and reverse rotation of the rotating end gear plate 53 starting from the initial position, so as to identify the current position angle of the camera module 3, and the limit switch is arranged at the maximum position of the reverse rotation of the transmission rod 51 and the maximum position of the forward rotation, so as to prevent the transmission rod 51 from rotating beyond the maximum value; at the same time, a limit frame is arranged at the connection between the recorder body 1 and the lens barrel 31, and the lens barrel 31 can only rotate within the limit frame through the limiting action of the limit frame, so as to achieve a better limiting effect and make the appearance of the driving recorder more beautiful.

[0035] Furthermore, the sensor module 4 includes an ambient light sensor 41 ; the ambient light sensor 41 is disposed on a side of the recorder body 1 close to the object being photographed; and the ambient light sensor 41 is electrically connected to the driving member 54 .

[0036] Specifically, Figure 1-2 As shown, the ambient light sensor 41 is arranged on the outside of the recorder body 1, above the camera module 3, and the arrangement position ensures the consistency of the detected ambient light and the ambient light captured by the camera module 3, thereby improving the accuracy of the adjustment angle.

[0037] Furthermore, a control module 7 is also included; the control module 7 is electrically connected to the camera module 3, the sensor module 4 and the self-adjusting module 5 respectively.

[0038] Furthermore, the mounting assembly 2 includes: a connector 21 for connecting to a car, a connecting handle 22 and a mounting base 23 for mounting the recorder body 1; the recorder body 1 is detachably connected to the mounting base 23; one end of the connecting handle 22 is rotatably connected to the mounting base 23; and the other end of the connecting handle 22 is rotatably connected to the connector 21.

[0039] In the fourth embodiment, the connecting member 21 is provided with a magnetic block and a detachable mounting screw hole, and the driving recorder can be installed on the vehicle in a suitable manner according to actual needs; at the same time, the connection parts of the connecting handle 22, the mounting seat 23 and the connecting member 21 are respectively provided with a rotatable and fine-adjustable angle structure to adapt to more usage scenarios; a self-locking structure is provided at the connection part of the connecting handle 22 and the mounting seat 23, and at the installation part of the connecting handle 22 and the connecting member 21; the self-locking structure includes a self-locking block, a spring, a spring block and an annular adjustment block, and ..., and a self-locking structure is provided at the connection part of the connecting handle 22 and the mounting seat 23, and a self-locking structure is provided at the connection part of the connecting handle 22 and the connecting member 21, and a self-locking structure is provided The locking block is connected to the connecting handle 22, and the annular adjustment block is arranged on the connecting piece 21 and the connecting seat; the self-locking block is rotatably arranged at the center position of the annular adjustment block, and a plurality of adjustment grooves are equidistantly provided on the inner circumference of the annular adjustment block, and the spring block can be placed in the adjustment groove, one end of the spring is connected to the self-locking block, and the other end is connected to the self-locking block. By placing the spring block in different adjustment grooves, different angle settings of the connecting handle 22 and the connecting seat, and the connecting handle 22 and the connecting piece 21 are realized. At the same time, a self-locking structure is provided to further enhance the scene adaptability.

[0040] Furthermore, the first lens 32 is a meniscus lens with negative optical power; the first lens 32 is convex to the object side; the second lens 33 is a biconvex lens with positive optical power; the third lens 34 is a biconvex lens with positive optical power; the fourth lens 35 is a meniscus lens with negative optical power; the fourth lens is convex to the image side; the distance between the image plane of the third lens 34 and the object plane of the fourth lens 35 is 0.02 mm.

[0041] Optionally, in an embodiment of the present invention, an optical system consisting of the above-mentioned four lenses with different positive and negative optical powers, different concave and convex shapes and an aperture member 37STO is used. Without the need to use a glued lens, the imaging quality of the glued lens can also be achieved, so that the total optical length TTL of the lens is 12.2 mm, it can withstand high temperatures above 85 degrees, the lens pixel is above 300W, it has an ultra-wide angle of 146 degrees, low distortion, TV distortion of only 16%, a large aperture F / NO=2.15, a day and night confocal function, a high cost-effective lens, only 1G3P, wherein the first lens 32 is a glass lens, and the remaining lenses are plastic lenses.

[0042] The camera module 3 of the present invention is described in detail below with reference to the above specific embodiments in combination with the accompanying drawings and tables.

[0043] The parameters that specifically conform to the above lens relationship are as follows: The first lens 32, the second lens 33, the third lens 34 and the fourth lens 35 satisfy the following conditional formula: F1=-4.115997mm, F2=+4.888908mm, F3=+2.907962mm, F4=-3.605768mm, F=3.35mm.

[0044] Wherein F1-F4 represent the focal lengths of the first lens 32 to the fourth lens 35, and F represents the effective focal length of the entire camera.

[0045] In an embodiment of the present invention, Figure 4 As shown, taking the object side as the base point, the first lens 32 to the fourth lens 35 along the optical axis direction are marked as L1 to L4 in sequence, and then the mirror surfaces of each lens are numbered in sequence, the mirror curvature radius of the first lens 32 is R1, R2, the aperture surface of the aperture member 37 is R3, the mirror curvature radius of the second lens 33 is R4, R5, the mirror curvature radius of the third lens 34 is R6, R7, the mirror curvature radius of the fourth lens 35 is R8, R9, and the lens of the color filter 68IR is R10, R11.

[0046] The optical system parameter table of the present invention is shown in Table 1: Table 1 The Abbe constant Vd in Table 1, Abbe number vd = (nd-1) / (nF-nC), wherein nd, nF and nC are the refractive indices of D light, F light and C light respectively, and D light, F light and C light are yellow light, cyan light and red light respectively.

[0047] Figure 5 is a light path diagram corresponding to this embodiment, that is, a schematic diagram of the imaging process; Figures 6 to 10 is an optical performance curve corresponding to this embodiment, wherein Figure 6 It is a chromatic aberration curve, also known as a spherical aberration curve, which is indicated by the wavelengths of the three commonly used colors F, D, and C, and the unit is nm; Figure 7 It is an astigmatism curve diagram, marked by the wavelengths of the three commonly used colors F, D, and C; Figure 8 It is a distortion curve diagram, which shows the distortion value of the lens under different field of view angles, and the unit is %; Fig. 9 It is an MTF curve, which represents the comprehensive resolution level of the lens' optical system; Fig.10 It is a wavefront distortion curve, which is used to evaluate the imaging quality and diffraction characteristics of the optical system.

[0048] In summary, combined with the above optical specifications, Table 1 and Figure 6-Figure 10As shown, the lens of the camera module 3 of this embodiment can also achieve the imaging quality of using a cemented lens without using a cemented lens, so that the total optical length TTL of the lens is 12.2mm, it can withstand high temperatures above 85 degrees, the lens pixel is above 300W, it has an ultra-wide angle of 146 degrees, low distortion, TV distortion is only 16%, large aperture F / NO=2.15, day and night confocal function, the lens is cost-effective, only 1G3P, wherein the first lens 32 is a glass lens, and the remaining lenses are plastic lenses, while the traditional method requires 5G to achieve the effect achieved by the present invention.

[0049] A driving recorder of the present invention has an automatically adjustable lens structure which allows the driving recorder to be adjusted in real time according to different lighting and environmental conditions, and can provide optimal viewing angle settings in various driving scenarios; through the automatic lens adjustment function, the driver does not need manual operation and can focus more on driving; this design reduces the distraction caused by adjusting the lens, thereby reducing the risk of traffic accidents caused by distraction and enhancing the overall driving safety; the design structure of the camera module 3 of the present invention avoids the high distortion phenomenon commonly seen in traditional lenses; by reasonably configuring the shape and refractive index of the lens, the geometric integrity of the image can be maintained at a large viewing angle, so that the photographed scenery and objects are not distorted, and at the same time, a non-glued design is adopted to avoid performance degradation due to environmental changes (such as temperature and humidity), and the lens can still maintain stable optical performance and image quality under different use conditions, solving the aging and optical degradation problems that may occur in glued lenses during long-term use.

[0050] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A driving recorder, characterized in that: include: A recorder body and a mounting assembly for connecting the recorder body to a vehicle; the mounting assembly is detachably connected to the recorder body; The recorder body is provided with: a camera module for photographing the exterior of the vehicle, a sensor module for detecting the intensity of ambient light, and a self-adjusting module for adjusting the angle of the camera module; The sensor module is detachably connected to the outer side of the recorder body, and the sensor module is electrically connected to the self-adjusting module; the self-adjusting module is fixedly connected to the recorder body; the camera module is rotatably connected to the recorder body; the camera module is fixedly connected to the output end of the self-adjusting module; The camera module includes a limiting component for limiting the position of the lens.

2. A driving recorder according to claim 1, characterized in that: The camera module also includes: a lens barrel, a first lens, a second lens, a third lens, a fourth lens and an imaging element; The lens barrel is rotatably connected to the recorder body; one end of the lens barrel is placed in the recorder body and fixedly connected to the output end of the self-adjusting module; the other end of the lens passes through the inner wall of the recorder body and is placed outside the recorder body; The first lens, the second lens, the third lens and the fourth lens are respectively arranged in the lens in sequence from the object side to the image side along the optical axis; the first lens, the second lens, the third lens and the fourth lens are respectively abutted against the limit assembly; An aperture member is disposed between the first lens and the second lens.

3. A driving recorder according to claim 2, characterized in that: The limiting assembly includes: a first limiting member, a second limiting member, a third limiting member and a fourth limiting member; The first limiting member is detachably connected to the lens barrel; The second limiting member is fixedly connected to the lens barrel; the second limiting member is provided with a first clamping portion; the first clamping portion is clamped with the aperture member; the first limiting member and the second limiting member cooperate with the lens barrel to form a first limiting partition for limiting and accommodating the first lens; the first lens is limitedly accommodated in the first limiting partition and can be respectively abutted against the first limiting member and the second limiting member; The third limiting member is fixedly connected to the lens barrel; a second clamping portion is provided on one end of the third limiting member; the second clamping portion cooperates with the second limiting member to form a second limiting partition for limiting and accommodating the second lens; The fourth limiting member is fixedly connected to the lens barrel; the other end of the third limiting member cooperates with the fourth limiting member to form a third limiting partition for limiting and accommodating the third lens and the fourth lens; the third lens and the fourth lens are respectively limited and accommodated in the third limiting partition; the third lens abuts against the third limiting member, and the fourth lens abuts against the fourth limiting member.

4. A driving recorder according to claim 2, characterized in that: A color filter is also arranged between the fourth lens and the imaging element; the color filter is detachably connected to the lens barrel.

5. The driving recorder according to claim 1, characterized in that: The self-adjusting module comprises: a transmission rod for driving the camera module to rotate, a fixed end gear plate for driving the transmission rod to rotate, a rotating end gear plate for driving the fixed end gear plate to rotate, and a driving member; One end of the transmission rod is transmission-connected to the camera module; the fixed-end gear plate is fixedly connected to the other end of the transmission rod; The driving member is fixedly connected to the recorder body; the rotating end gear wheel is arranged on the output end of the driving member; The fixed end toothed disc is provided with a first end face tooth; the rotating end toothed disc is provided with a second end face tooth matched with the first end face tooth; the first end face tooth on the fixed end toothed disc is meshed and transmission-connected with the second end face tooth on the rotating end toothed disc.

6. A driving recorder according to claim 5, characterized in that: The sensing module comprises an ambient light sensor; the ambient light sensor is arranged on a side of the recorder body close to the object being photographed; and the ambient light sensor is electrically connected to the driving component.

7. A driving recorder according to any one of claims 1 to 6, characterized in that: It also includes a control module; the control module is electrically connected to the camera module, the sensor module and the self-adjusting module respectively.

8. The driving recorder according to claim 1, characterized in that: The installation assembly includes: a connector for connecting to the car, a connecting handle and a mounting seat for mounting the recorder body; The recorder body is detachably connected to the mounting seat; one end of the connecting handle is rotatably connected to the mounting seat; and the other end of the connecting handle is rotatably connected to the connecting piece.

9. The driving recorder according to claim 2, characterized in that: The first lens is a meniscus lens with negative power; the first lens is convex to the object side; the second lens is a biconvex lens with positive power; the third lens is a biconvex lens with positive power; the fourth lens is a meniscus lens with negative power; the fourth lens is convex to the image side; The distance between the image plane of the third lens and the object plane of the fourth lens is 0.02 mm.

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