Optical lens and camera device

Abstract

The present invention provides an optical lens and a camera device. The optical lens and the camera device include: a wide-angle lens group, including a first lens and a second lens, wherein the first lens and the second lens are meniscus concave negative lenses; a first liquid lens group, including a third lens and a fourth lens, wherein the third lens is a meniscus convex positive lens and the third lens is a liquid lens, and the fourth lens is a meniscus concave negative lens; a cemented lens group, including a fifth lens and a sixth lens, wherein the fifth lens is a meniscus concave negative lens, and the sixth lens is a biconvex positive lens; a second liquid lens group, including a seventh lens and an eighth lens, wherein the seventh lens is a biconvex positive lens and the seventh lens is a liquid lens, and the eighth lens is a meniscus concave positive lens; the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, and the eighth lens are arranged in sequence along the incident light path.

Description

Technical Field

[0001] The present invention relates to the technical field of lenses, and in particular to an optical lens and a camera device. Background Art

[0002] An endoscope is an optical lens that has been widely used in non-invasive or minimally invasive treatments in modern medicine.

[0003] When performing non-invasive or minimally invasive treatment, the endoscope needs to go deep into the human body, so the endoscope needs to have features such as slenderness and a large field of view. In addition, when using an endoscope for diagnosis, how to magnify the image of the lesion in a local range without changing the object distance is a function that users hope to achieve.

[0004] However, existing endoscopes cannot simultaneously meet the functions of large field of view, high image quality, and adjustable focus. Summary of the invention

[0005] The present invention provides an optical lens and a camera device. The optical lens can have the functions of large field angle, high image quality and adjustable focus.

[0006] In one aspect, an optical lens is provided, comprising:

[0007] A wide-angle lens group, comprising a first lens and a second lens, wherein the first lens and the second lens are meniscus concave negative lenses;

[0008] A first liquid lens group, comprising a third lens and a fourth lens, wherein the third lens is a meniscus convex positive lens and the third lens is a liquid lens, and the fourth lens is a meniscus concave negative lens;

[0009] A cemented lens group, comprising a fifth lens and a sixth lens, wherein the fifth lens is a meniscus concave negative lens, and the sixth lens is a biconvex positive lens;

[0010] A second liquid lens group includes a seventh lens and an eighth lens, wherein the seventh lens is a biconvex positive lens and a liquid lens, and the eighth lens is a meniscus concave positive lens;

[0011] The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are arranged in sequence along the incident light path.

[0012] Optionally, , , , , , , , , wherein the is the focal length of the first lens, is the focal length of the second lens, is the focal length of the third lens, is the focal length of the fourth lens, is the focal length of the fifth lens, is the focal length of the sixth lens, is the focal length of the seventh lens, is the focal length of the eighth lens, is the focal length of the optical lens.

[0013] Optionally, the refractive index of the first lens is and Abbe constant The value range of is: , ;

[0014] The refractive index of the second lens and Abbe constant The value range of is: , ;

[0015] The refractive index of the third lens and Abbe constant The value range of is: , ;

[0016] The refractive index of the fourth lens and Abbe constant The value range of is: , ;

[0017] The refractive index of the fifth lens and Abbe constant The value range of is:

[0018] , ;

[0019] The refractive index of the sixth lens and Abbe constant The value range of is: , ;

[0020] The refractive index of the seventh lens and Abbe constant The value range of is: , ;

[0021] The refractive index of the eighth lens and Abbe constant The value range of is: , .

[0022] Optionally, the fourth lens and the eighth lens are glass aspherical lenses.

[0023] Optionally, the aspheric curve equation of the glass aspheric lens is:

[0024]

[0025] in, The aspheric surface is at a height of When the position is , the distance from the vertex of the aspherical surface is is the paraxial curvature of the aspheric surface, is the cone constant, is any positive integer greater than 1.

[0026] Optionally, the optical lens further includes a stop, and the stop is disposed between the fourth lens and the fifth lens.

[0027] Optionally, the spacing between the first lens and the second lens is 0.1~0.5mm; the spacing between the second lens and the third lens is 0.1~0.5mm; the spacing between the third lens and the fourth lens is 0mm; the spacing between the fourth lens and the aperture is 4.1~4.5mm; the spacing between the aperture and the fifth lens is 0.1~0.5mm; the spacing between the fifth lens and the sixth lens is 0mm; the spacing between the sixth lens and the seventh lens is 0.1~0.5mm; the distance between the seventh lens and the eighth lens is 0mm.

[0028] On the other hand, a camera device is provided, comprising the optical lens as described in any one of the above items.

[0029] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0030] The present invention provides an optical lens and a camera device. By reasonably matching the types of lenses, an optical lens with a large field of view, a small size, high image quality and variable focus is formed. Among them, the optical lens includes a wide-angle lens group, which includes a first lens and a second lens. The first lens and the second lens are meniscus concave negative lenses, which can improve the field of view. After the first lens and the second lens is a first liquid lens group, the first liquid lens group includes a third lens and a fourth lens, the third lens is a meniscus convex positive lens and the third lens is a liquid lens, and the fourth lens is a meniscus concave negative lens. The liquid lens itself has a zoom function, and by matching the third lens and the fourth lens to form a liquid lens group, the zoom function is further realized, and the image quality of the optical lens can also be ensured. The cemented lens group includes a fifth lens and a sixth lens, the fifth lens is a meniscus concave negative lens, and the sixth lens is a double convex positive lens. The cemented lens group itself has the function of achromatization, and the fifth lens and the sixth lens of the above type are used in combination with the above lenses to further improve the image quality. A second liquid lens group is arranged after the cemented lens group, and the second liquid lens group includes a seventh lens and an eighth lens, wherein the seventh lens is a double convex positive lens and the seventh lens is a liquid lens, and the eighth lens is a meniscus concave positive lens. The second liquid lens group is arranged, and the second liquid lens group can further ensure the zoom function. Under the joint action of the lenses in the aforementioned multiple lens groups, the formed optical lens has the characteristics of wide imaging angle, smooth zoom, small size, etc. At the same time, the on-axis and off-axis aberrations are well corrected, so that the optical lens has good imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of an optical lens provided in an embodiment of the present disclosure;

[0033] Figure 2 A design parameter diagram of an optical lens provided by an embodiment of the present disclosure;

[0034] Figure 3 A parameter diagram of aspheric coefficients of a fourth lens and an eighth lens provided in an embodiment of the present disclosure;

[0035] Figure 4 Curvature parameter diagrams of the third lens and the seventh lens provided in the embodiments of the present disclosure;

[0036] Figure 5An axial chromatic aberration diagram of an optical lens in a wide-angle state provided by an embodiment of the present disclosure;

[0037] Figure 6 A vertical axis chromatic aberration diagram of an optical lens in a wide-angle state provided by an embodiment of the present disclosure;

[0038] Figure 7 A Modulation Transfer Function (MTF) curve diagram of an optical lens in a wide-angle state provided by an embodiment of the present disclosure;

[0039] Figure 8 An axial chromatic aberration diagram of an optical lens in a telephoto state provided by an embodiment of the present disclosure;

[0040] Fig. 9 A vertical axis chromatic aberration diagram of an optical lens in a telephoto state provided by an embodiment of the present disclosure;

[0041] Fig.10 An MTF curve diagram of an optical lens in a telephoto state provided by an embodiment of the present disclosure.

[0042] The reference numerals are as follows:

[0043] 1: wide-angle lens group; 2: first liquid lens group; 3: cemented lens group; 4: second liquid lens group;

[0044] 11: first lens; 12: second lens; 13: third lens; 14: fourth lens; 15: fifth lens; 16: sixth lens; 17: seventh lens; 18: eighth lens; 19: aperture;

[0045] 21: first equivalent glass plate; 22: second equivalent glass plate. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Figure 1 This is a schematic diagram of the structure of an optical lens provided by an embodiment of the present disclosure. Figure 1 , the optical lens comprises:

[0048] The wide-angle lens group 1 includes a first lens 11 and a second lens 12, wherein the first lens 11 and the second lens 12 are meniscus concave negative lenses;

[0049] The first liquid lens group 2 includes a third lens 13 and a fourth lens 14, wherein the third lens 13 is a meniscus convex positive lens and the third lens 13 is a liquid lens, and the fourth lens 14 is a meniscus concave negative lens;

[0050] A cemented lens group 3, comprising a fifth lens 15 and a sixth lens 16, wherein the fifth lens 15 is a meniscus concave negative lens, and the sixth lens 16 is a biconvex positive lens;

[0051] The second liquid lens group 4 includes a seventh lens 17 and an eighth lens 18, wherein the seventh lens 17 is a biconvex positive lens and a liquid lens, and the eighth lens 18 is a meniscus concave positive lens;

[0052] The first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, the seventh lens 17 and the eighth lens 18 are arranged in sequence along the incident light path.

[0053] The present invention provides an optical lens and a camera device. By reasonably matching the types of lenses, an optical lens with a large field of view, a small size, high image quality and variable focus is formed. Among them, the optical lens includes a wide-angle lens group, which includes a first lens and a second lens. The first lens and the second lens are meniscus concave negative lenses, which can improve the field of view. After the first lens and the second lens is a first liquid lens group, the first liquid lens group includes a third lens and a fourth lens, the third lens is a meniscus convex positive lens and the third lens is a liquid lens, and the fourth lens is a meniscus concave negative lens. The liquid lens itself has a zoom function, and by matching the third lens and the fourth lens to form a liquid lens group, the zoom function is further realized, and the image quality of the optical lens can also be ensured. The cemented lens group includes a fifth lens and a sixth lens, the fifth lens is a meniscus concave negative lens, and the sixth lens is a double convex positive lens. The cemented lens group itself has the function of achromatization, and the fifth lens and the sixth lens of the above type are used in combination with the above lenses to further improve the image quality. A second liquid lens group is arranged after the cemented lens group, and the second liquid lens group includes a seventh lens and an eighth lens, wherein the seventh lens is a double convex positive lens and the seventh lens is a liquid lens, and the eighth lens is a meniscus concave positive lens. The second liquid lens group is arranged, and the second liquid lens group can further ensure the zoom function. Under the joint action of the lenses in the aforementioned multiple lens groups, the formed optical lens has the characteristics of wide imaging angle, smooth zoom, small size, etc. At the same time, the on-axis and off-axis aberrations are well corrected, so that the optical lens has good imaging quality.

[0054] In the disclosed embodiment, the object-side surface of the first lens 11 is convex, and the image-side surface is concave; the object-side surface of the second lens 12 is convex, and the image-side surface is concave; the object-side surface of the third lens 13 is concave, and the image-side surface is convex; the object-side surface of the fourth lens 14 is concave, and the image-side surface is convex; the object-side surface of the fifth lens 15 is convex, and the image-side surface is concave; the object-side surface of the sixth lens 16 is convex, and the image-side surface is convex; the object-side surface of the seventh lens 17 is convex, and the image-side surface is convex; the object-side surface of the eighth lens 18 is concave, and the image-side surface is convex.

[0055] In the disclosed embodiment, by reasonably matching the types of lenses, it is ensured that the wide-angle lens group can better increase the market angle, that the first liquid lens group and the second liquid lens group can better achieve the zoom effect, and that the cemented lens group can better improve the image quality.

[0056] In the disclosed embodiment, , , , , , , , , wherein the is the focal length of the first lens 11, is the focal length of the second lens 12, is the focal length of the third lens 13, is the focal length of the fourth lens 14, is the focal length of the fifth lens 15, is the focal length of the sixth lens 16, is the focal length of the seventh lens 17, is the focal length of the eighth lens 18, is the focal length of the optical lens.

[0057] For example, , , , , , , , .

[0058] In the disclosed embodiment, the optical lens formed by the lenses with the above focal length ratio is beneficial to the field of view and image quality of the optical lens.

[0059] In the embodiment of the present disclosure, the refractive index of the first lens 11 is and Abbe constant The value range of is: , ;

[0060] The refractive index of the second lens 12 is and Abbe constant The value range of is: , ;

[0061] The refractive index of the third lens 13 is and Abbe constant The value range of is: , ;

[0062] The refractive index of the fourth lens 14 is and Abbe constant The value range of is: , ;

[0063] The refractive index of the fifth lens 15 is and Abbe constant The value range of is:

[0064] , ;

[0065] The refractive index of the sixth lens 16 is and Abbe constant The value range of is: , ;

[0066] The refractive index of the seventh lens 17 is and Abbe constant The value range of is: , ;

[0067] The refractive index of the eighth lens 18 is and Abbe constant The value range of is: , .

[0068] Exemplarily, the refractive index of the first lens 11 is , Abbe constant ;

[0069] The refractive index of the second lens 12 is , Abbe constant ;

[0070] The refractive index of the third lens 13 is , Abbe constant ;

[0071] The refractive index of the fourth lens 14 is , Abbe constant ;

[0072] The refractive index of the fifth lens 15 is , Abbe constant ;

[0073] The refractive index of the sixth lens 16 is , Abbe constant ;

[0074] The refractive index of the seventh lens 17 is , Abbe constant ;

[0075] The refractive index of the eighth lens 19 is , Abbe constant .

[0076] In the disclosed embodiment, the refractive index of the lens will affect the aperture of the lens, and the Abbe constant will affect the dispersion degree of the lens. By reasonably matching the refractive index and the Abbe constant of the lens, it can be ensured that the size of the lens is small and the dispersion degree is low.

[0077] In the embodiment of the present disclosure, the fourth lens 14 and the eighth lens 18 are glass aspherical lenses.

[0078] In the disclosed embodiment, the glass aspherical lens can reduce the distortion of the optical lens, and the use of the glass aspherical lens can further ensure the image quality of the optical lens.

[0079] In the embodiment of the present disclosure, the aspheric curve equation of the glass aspheric lens is:

[0080]

[0081] in, The aspheric surface is at a height of When the position is , the distance from the vertex of the aspherical surface is is the paraxial curvature of the aspheric surface, is the cone constant, is any positive integer greater than 1.

[0082] In the disclosed embodiment, the above equation is used to produce a glass aspheric mirror surface, and the resulting glass aspheric lens has a better effect of reducing distortion.

[0083] In the embodiment of the present disclosure, the optical lens further includes an aperture 19 , and the aperture 19 is disposed between the fourth lens 14 and the fifth lens 15 .

[0084] In the embodiment of the present disclosure, setting an aperture is beneficial to limiting the size of the light beam.

[0085] In the embodiment of the present disclosure, the spacing between the first lens 11 and the second lens 12 is 0.1~0.5mm; the spacing between the second lens 12 and the third lens 13 is 0.1~0.5mm; the spacing between the third lens 13 and the fourth lens 14 is 0mm; the spacing between the fourth lens 14 and the aperture 19 is 4.1~4.5mm; the spacing between the aperture 19 and the fifth lens 15 is 0.1~0.5mm; the spacing between the fifth lens 15 and the sixth lens 16 is 0mm; the spacing between the sixth lens 16 and the seventh lens 17 is 0.1~0.5mm; the distance between the seventh lens 17 and the eighth lens 18 is 0mm.

[0086] Exemplarily, the spacing between the first lens and the second lens is 0.4mm; the spacing between the second lens and the third lens is 0.3mm; the spacing between the third lens and the fourth lens is 0mm; the spacing between the fourth lens and the aperture is 4.3mm; the spacing between the aperture and the fifth lens is 0.35mm; the spacing between the fifth lens and the sixth lens is 0mm; the spacing between the sixth lens and the seventh lens is 0.2mm; and the distance between the seventh lens and the eighth lens is 0mm.

[0087] In the embodiment of the present disclosure, by adopting the above-mentioned spacing, it is possible to ensure that the total length of the optical lens is small enough while ensuring the performance of the optical lens.

[0088] It is worth noting that the focal length of the optical lens provided in the embodiment of the present disclosure is 0.5~1.5mm, the aperture is less than or equal to 5.0, the field of view angle is greater than 80°, and it can work within the wavelength range of visible light.

[0089] In the embodiment of the present disclosure, the optical lens further includes a first equivalent glass plate 21 and a second equivalent glass plate 22. The first equivalent glass plate 21 is arranged on a side of the first lens 11 away from the second lens 12, and the second equivalent glass plate 22 is arranged on a side of the eighth lens 18 away from the seventh lens 17.

[0090] The embodiment of the present disclosure also provides a camera device, which generally includes an optical lens.

[0091] In the embodiment of the present disclosure, the optical lens of the present application is used in the camera device, which can ensure the imaging quality on the one hand and ensure that the imaging angle is large enough on the other hand. On the one hand, the lens can realize the zoom function, which is more conducive to the camera device to capture images.

[0092] It is worth noting that the optical lens provided by the embodiment of the present disclosure has the following advantages:

[0093] First, the imaging angle of the optical lens to the object in the wide-angle state is greater than 80 degrees. In both the wide-angle state and the telephoto state, it has the advantages of higher imaging clarity, lower tolerance sensitivity and better high and low temperature stability, and can monitor more comprehensively;

[0094] Second, by properly matching lenses, the optical lens structure is compact and reasonable, easy to assemble, with low tolerance sensitivity, and more suitable for large-scale high-yield production;

[0095] Third, by using two liquid lenses with two glass aspherical lenses, the zoom system does not use any moving components and has the characteristics of smooth zoom, small size, light weight, low cost and easy processing. It can be widely used in some new sensors and systems to adjust image quality, improve magnification, etc., and has a good application prospect;

[0096] Fourth, it adopts a zoom design, which has both long-distance and close-range wide-angle high-quality monitoring capabilities;

[0097] Fifth, various axial chromatic aberrations, vertical chromatic aberrations and high-order chromatic aberrations are corrected to ensure that the imaging system of the optical lens can have high imaging quality even at large angles.

[0098] Figure 2 This is a design parameter diagram of an optical lens provided by an embodiment of the present disclosure. Figure 2 , which specifically shows the specific parameters of each optical component in the optical lens.

[0099] Figure 3 A parameter diagram of the aspheric coefficients of the fourth lens and the eighth lens provided in the embodiment of the present disclosure. Figure 3 , Figure 3 . The even-order aspheric coefficients of the fourth lens and the eighth lens are shown in .

[0100] Figure 4 The curvature parameter diagram of the third lens and the seventh lens provided in the embodiment of the present disclosure. Figure 4 , which respectively shows the specific values ​​of the curvatures of the third lens and the seventh lens in the wide-angle state and the telephoto state of the optical lens.

[0101] Figure 5 This is a diagram of axial chromatic aberration of an optical lens in a wide-angle state provided by an embodiment of the present disclosure. Figure 5 , wherein the horizontal axis represents the position in the axial direction, and the vertical axis represents the field of view angle. By obtaining the difference in the horizontal coordinates of the curves in the figure, it can be known that the optical lens provided by the present disclosure has a small axial chromatic aberration in the wide-angle state.

[0102] It is worth mentioning that the axial chromatic aberration diagram is also called the point spherical chromatic aberration diagram.

[0103] It is worth mentioning that Figure 5 The different curves in the figure correspond to light with wavelengths of 0.486μm, 0.588μm, and 0.656μm respectively.

[0104] Figure 6 This is a vertical axis chromatic aberration diagram of an optical lens in a wide-angle state provided by an embodiment of the present disclosure. Figure 6 , wherein the horizontal axis represents the position on the vertical axis, and the vertical axis represents the normalized pupil radius. By obtaining the difference in the horizontal coordinates of the curves in the figure, it can be known that the optical lens provided by the present disclosure has a small vertical axis chromatic aberration in a wide-angle state.

[0105] It is worth mentioning that the vertical axis chromatic aberration diagram is also called the magnification chromatic aberration diagram.

[0106] It is worth mentioning that Figure 6 The different curves in the figure correspond to light with wavelengths of 0.4861μm, 0.5876μm, and 0.6563μm respectively.

[0107] Figure 7 This is a graph showing the modulation transfer function (MTF) of an optical lens in a wide-angle state provided by an embodiment of the present disclosure. Figure 7 , where the horizontal axis represents the distance from each position in the image to the center of the image, and the vertical axis represents the MTF value.

[0108] The larger the MTF value, the better the image quality of the optical lens. It can be seen that the optical lens provided by the present disclosure has better image quality in a wide-angle state.

[0109] Figure 8 Axial chromatic aberration diagram of an optical lens in telephoto state provided by an embodiment of the present disclosure. Figure 8 By obtaining the difference in the horizontal coordinates of the curves in the figure, it can be known that the axial chromatic aberration of the optical lens provided by the present disclosure is small in the telephoto state.

[0110] Fig. 9 This is a vertical axis chromatic aberration diagram of an optical lens in a telephoto state provided by an embodiment of the present disclosure. Fig. 9 By obtaining the difference in the horizontal coordinates of the curves in the figure, it can be known that the vertical axis chromatic aberration of the optical lens provided by the present disclosure is small in the telephoto state.

[0111] Fig.10 This is an MTF curve diagram of an optical lens in a telephoto state provided by an embodiment of the present disclosure. Fig.10It can be seen that the optical lens provided by the present invention has good image quality in the telephoto state.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optical lens, characterized in that: include: A wide-angle lens group, comprising a first lens and a second lens, wherein the first lens and the second lens are negative meniscus lenses; A first liquid lens group, comprising a third lens and a fourth lens, wherein the third lens is a positive meniscus lens and the third lens is a liquid lens, and the fourth lens is a negative meniscus lens; A cemented lens group, comprising a fifth lens and a sixth lens, wherein the fifth lens is a meniscus negative lens, and the sixth lens is a biconvex positive lens; A second liquid lens group includes a seventh lens and an eighth lens, wherein the seventh lens is a biconvex positive lens and a liquid lens, and the eighth lens is a meniscus positive lens; The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are arranged in sequence along the incident light path, and the optical elements with optical power in the optical lens are only the eight lenses.

2. The optical lens according to claim 1, characterized in that: , , , , , , , , wherein the is the focal length of the first lens, is the focal length of the second lens, is the focal length of the third lens, is the focal length of the fourth lens, is the focal length of the fifth lens, is the focal length of the sixth lens, is the focal length of the seventh lens, is the focal length of the eighth lens, is the focal length of the optical lens.

3. The optical lens according to claim 1, characterized in that: The refractive index of the first lens and Abbe constant The value range of is: , ; The refractive index of the second lens and Abbe constant The value range of is: , ; The refractive index of the third lens and Abbe constant The value range of is: , ； The refractive index of the fourth lens and Abbe constant The value range of is: , ; The refractive index of the fifth lens and Abbe constant The value range of is: , ; The refractive index of the sixth lens and Abbe constant The value range of is: , ; The refractive index of the seventh lens and Abbe constant The value range of is: , ; The refractive index of the eighth lens and Abbe constant The value range of is: , .

4. The optical lens according to any one of claims 1 to 3, characterized in that: The fourth lens and the eighth lens are glass aspherical lenses.

5. The optical lens according to claim 4, characterized in that: The aspheric curve equation of the glass aspheric lens is: in, The aspheric surface is at a height of When the position is , the distance from the vertex of the aspherical surface is is the paraxial curvature of the aspheric surface, is the cone constant, is any positive integer greater than 1.

6. The optical lens according to any one of claims 1 to 3, characterized in that: The optical lens further includes a stop, and the stop is disposed between the fourth lens and the fifth lens.

7. The optical lens according to claim 6, characterized in that: The spacing between the first lens and the second lens is 0.1~0.5mm; the spacing between the second lens and the third lens is 0.1~0.5mm; the spacing between the third lens and the fourth lens is 0mm; the spacing between the fourth lens and the aperture is 4.1~4.5mm; the spacing between the aperture and the fifth lens is 0.1~0.5mm; the spacing between the fifth lens and the sixth lens is 0mm; the spacing between the sixth lens and the seventh lens is 0.1~0.5mm; the distance between the seventh lens and the eighth lens is 0mm.

8. A camera device, characterized in that: The camera device comprises the optical lens according to any one of claims 1 to 7.

Images