Wide-angle high-definition camera

Abstract

The utility model discloses a wide-angle high-definition camera, and belongs to the technical field of cameras. A wide-angle high-definition camera comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens, and object side surfaces and image side surfaces of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are aspheric surfaces; according to the utility model, through the five-lens type design formed by the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the diaphragm, and the surface shape structure of each lens is combined with the optimal range of optical parameters, the optical system of the camera has the characteristics of wide angle and high definition, and has good imaging quality; by means of the technical scheme, high-definition imaging can be achieved, the imaging effect can be closer to a shot object, high picture texture, high resolution and high definition of a shot picture are achieved, and it is ensured that the shooting requirements of people are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to camera technical field especially relates to a wide-angle high definition camera. BACKGROUND

[0002] With the continuous development of science and technology, the rise of electronic products with image taking function, the demand of small-sized photographic lens is increasing, and people pay more attention to the improvement and innovation of electronic products. The lens is more widely used in electronic products such as mobile phones, tablet computers, unmanned aerial vehicles and computers, and various scientific and technological improvements are constantly emerging, and people's requirements for mobile phone shooting are increasing to meet people's shooting needs.

[0003] At present, the wide-angle of the mobile phone camera is not high definition during use, and high-definition imaging cannot be realized, so that the imaging effect cannot approach the object itself, resulting in poor quality, resolution and clarity of the shooting picture. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem that the wide-angle of the current mobile phone camera is not high definition, resulting in poor quality, resolution and clarity of the shooting picture, and proposes a wide-angle high definition camera.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A wide-angle high definition camera, comprising a first lens, a second lens, a third lens, a fourth lens and a fifth lens, the object side and the image side of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are aspherical surface, further comprising a diaphragm arranged between the second lens and the third lens, wherein the first lens and the fifth lens have negative refractive power, the second lens, the third lens and the fourth lens have positive refractive power, the object side of the first lens and the fifth lens is convex at the near axis, the object side of the second lens is convex, the image side of the third lens is convex, the object side of the fourth lens is concave at the near axis, the image side of the fourth lens is convex at the near axis, the wide-angle high definition camera satisfies the following relationship: 1.0620

[0007] To select the range of the distance on the optical axis from the image side surface of the second lens to the object side surface of the third lens and the focal length of the high definition optical image capturing lens, preferably, the wide-angle high definition camera satisfies the following relationship: 2.15 < (D23+CT3) / f < 2.18, wherein D23 is the distance on the optical axis from the image side surface of the second lens to the object side surface of the third lens, and CT3 is the thickness on the optical axis of the third lens.

[0008] To select the range of the focal length of the high definition optical image capturing lens and the distance on the optical axis from the first lens to the imaging surface, preferably, the wide-angle high definition camera satisfies the following relationship: 0.15 < f / TL < 0.23, wherein TL is the distance on the optical axis from the first lens to the imaging surface.

[0009] To select the range of the distance on the optical axis from the object side surface of the first lens to the image side surface of the fifth lens and the interval distance on the optical axis of the first lens and the second lens, preferably, the wide-angle high definition camera satisfies the following relationship: 4.61 < TD / T12 < 4.66, wherein TD is the distance on the optical axis from the object side surface of the first lens to the image side surface of the fifth lens, and T12 is the interval distance on the optical axis of the first lens and the second lens.

[0010] To select the range of the total optical length of the image capturing optical lens and the focal length of the high definition optical image capturing lens, preferably, the wide-angle high definition camera satisfies the following relationship: 5.22 < TTL / f < 5.36, wherein TTL is the total optical length of the image capturing optical lens.

[0011] To select the range of the air gap on the optical axis from the image side surface of the third lens to the object side surface of the fourth lens and the sum of the air gaps between the adjacent lenses of the first lens to the fifth lens, preferably, the wide-angle high definition camera satisfies the following relationship: 1.00 < T34 / AAT < 1.56, wherein T34 is the air gap on the optical axis from the image side surface of the third lens to the object side surface of the fourth lens, and AAT is the sum of the air gaps between the adjacent lenses of the first lens to the fifth lens.

[0012] To select the range of the focal length of the high definition optical image capturing lens and the focal length of the first lens plus the focal length of the fourth lens, preferably, the wide-angle high definition camera satisfies the following relationship: 2.26 < f / (f1+f4) < 2.89, wherein f1 is the focal length of the first lens, and f4 is the focal length of the fourth lens.

[0013] To select the range of the focal length of the high definition optical image capturing lens and the combined focal length of the first lens, the second lens and the third lens, preferably, the wide-angle high definition camera satisfies the following relationship: 0.05 < f / f123 < 0.09, wherein f123 is the combined focal length of the first lens, the second lens and the third lens.

[0014] In order to select the focal length of the fifth lens and the range of the central thickness of the fifth lens along the optical axis, preferably, the wide-angle high-definition camera satisfies the following relationship: -23.86 < f5 / CT5 < -22.06, wherein f5 is the focal length of the fifth lens, and CT5 is the central thickness of the fifth lens along the optical axis.

[0015] Compared with the prior art, the wide-angle high-definition camera has the following beneficial effects:

[0016] 1. The wide-angle high-definition camera has a five-lens design composed of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the diaphragm, and the surface structure of each lens is combined with the optimized range of optical parameters, so that the optical system of the camera has the characteristics of wide angle and high definition, has good imaging quality, can realize high-definition imaging, and makes the imaging effect closer to the photographed object itself, thereby realizing high-quality, high-resolution and high-definition of the photographed picture, and better adapting to the use of high-imaging-quality portable equipment, and ensuring the shooting needs of people.

[0017] The parts not involved in the device are the same as or can be realized by the prior art, and the wide-angle high-definition camera solves the problem that the current mobile phone camera is not wide-angle enough and high-definition, thereby causing poor picture quality, resolution and clarity of the photographed picture. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A planar explosion diagram of the wide-angle high-definition camera is provided for the utility model.

[0019] Figure 2 A distortion of the wide-angle high-definition camera is provided for the utility model. Figure One ;

[0020] Figure 3 An axial chromatic aberration curve of the wide-angle high-definition camera is provided for the utility model. Figure One ;

[0021] Figure 4 A distortion of the wide-angle high-definition camera is provided for the utility model. Figure Two ;

[0022] Figure 5 An axial chromatic aberration curve of the wide-angle high-definition camera is provided for the utility model. Figure Two ;

[0023] Figure 6 A distortion of the wide-angle high-definition camera is provided for the utility model. Figure Three ;

[0024] Figure 7The axial chromatic aberration curve of the wide-angle high-definition camera Figure Three ;

[0025] Figure 8 The distortion of the wide-angle high-definition camera Figure Four ;

[0026] Figure 9 The axial chromatic aberration curve of the wide-angle high-definition camera Figure Four .

[0027] In the figure: 1, first lens; 2, second lens; 3, third lens; 4, fourth lens; 5, fifth lens; 6, diaphragm. Specific embodiments

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0029] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "top", "bottom", "in", "out" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0030] Embodiment one

[0031] Reference Figure 1The utility model discloses a wide -angle high definition camera, including first lens 1, second lens 2, third lens 3, fourth lens 4 and fifth lens 5, the object side and the image side of first lens 1, second lens 2, third lens 3, fourth lens 4 and fifth lens 5 are all aspherical surface, still include the diaphragm 6 of being arranged between second lens 2 and third lens 3, the diaphragm 6 is used in the lens for controlling the light passing amount, wherein, first lens 1 and fifth lens 5 all have negative flexural strength, second lens 2, third lens 3 and fourth lens 4 all have positive flexural strength, the positive and negative flexural strength will make incident light outward diffusion, expand field angle, reduce distortion, and then can optimize the optical performance of whole system, the object side of first lens 1 and fifth lens 5 is all convex at near axis, the object side of second lens 2 is convex, the image side of third lens 3 is convex, the object side of fourth lens 4 is concave at near axis, the image side of fourth lens 4 is convex at near axis, wide -angle high definition camera satisfies following relation formula: 1.0620

[0032] Specifically, in use, through the five lens type design of first lens 1, second lens 2, third lens 3, fourth lens 4, fifth lens 5 and diaphragm 6, and the combination of the best range of surface structure and optical parameter of each lens, the optical system of the camera has the characteristics of wide-angle high definition, has good imaging quality, can realize high-definition imaging, so that the imaging effect can be closer to the photographed object itself, thereby realizing the high-quality, high-resolution and high-definition of the photographed picture, and better adapting to the use of high imaging quality portable equipment, and ensuring the shooting needs of people.

[0033] The wide-angle high-definition camera satisfies the following relationship: 2.15<(D23+CT3) / f<2.18.

[0034] Specifically, through the numerical interval, the range of the distance on the optical axis from the image side of the second lens 2 to the object side of the third lens 3 and the focal length of the high-definition optical imaging lens can be selected.

[0035] The wide-angle high-definition camera satisfies the following relationship: 0.15<f / TL<0.23.

[0036] Specifically, through the numerical interval, the range of the distance on the optical axis from the image side of the second lens 2 to the object side of the third lens 3 and the focal length of the high-definition optical imaging lens can be selected.

[0037] The wide-angle high-definition camera satisfies the following relationship: 4.61 < TD / T12 < 4.66.

[0038] Specifically, by the numerical interval, the range of the distance from the object side surface of the first lens 1 to the image side surface of the fifth lens 5 on the optical axis and the interval distance of the first lens 1 and the second lens 2 on the optical axis can be selected.

[0039] The wide-angle high-definition camera satisfies the following relationship: 5.22 < TTL / f < 5.36.

[0040] Specifically, by the numerical interval, the range of the total optical length of the photographing optical lens and the focal length of the high-definition photographing optical lens can be selected.

[0041] The wide-angle high-definition camera satisfies the following relationship: 1.00 < T34 / AAT < 1.56.

[0042] Specifically, by the numerical interval, the range of the air gap from the image side surface of the third lens 3 to the object side surface of the fourth lens 4 on the optical axis and the sum of the air gaps between each adjacent lens of the first lens 1 to the fifth lens 5 can be selected.

[0043] The wide-angle high-definition camera satisfies the following relationship: 2.26 < f / (f1+f4) < 2.89.

[0044] Specifically, by the numerical interval, the range of the focal length of the high-definition photographing optical lens and the focal length of the first lens 1 plus the focal length of the fourth lens 4 can be selected.

[0045] The wide-angle high-definition camera satisfies the following relationship: 0.05 < f / f123 < 0.09.

[0046] Specifically, by the numerical interval, the range of the focal length of the high-definition photographing optical lens and the combined focal length of the first lens 1, the second lens 2 and the third lens 3 can be selected.

[0047] The wide-angle high-definition camera satisfies the following relationship: -23.86 < f5 / CT5 < -22.06.

[0048] Specifically, by the numerical interval, the range of the focal length of the fifth lens 5 and the central thickness of the fifth lens 5 along the optical axis can be selected.

[0049] The meaning represented by the "letter value" in the utility model is as follows:

[0050] f: focal length of the high-definition photographing optical lens;

[0051] R5: curvature radius of the object side surface of the fifth lens 5;

[0052] V2: Abbe number of the second lens 2;

[0053] V4: Abbe number of the fourth lens 4;

[0054] D23: Distance on the optical axis from the image side surface of the second lens 2 to the object side surface of the third lens 3;

[0055] CT3: Thickness of the third lens 3 on the optical axis;

[0056] TL: Distance on the optical axis from the first lens 1 to the imaging plane;

[0057] TD: Distance on the optical axis from the object side surface of the first lens 1 to the image side surface of the fifth lens 5;

[0058] T12: Separation distance on the optical axis between the first lens 1 and the second lens 2;

[0059] TTL: Total optical length of the imaging optical lens;

[0060] T34: Air gap on the optical axis from the image side surface of the third lens 3 to the object side surface of the fourth lens 4;

[0061] AAT: Sum of air gaps between each adjacent lens from the first lens 1 to the fifth lens 5;

[0062] f1: Focal length of the first lens 1;

[0063] F4: Focal length of the fourth lens 4;

[0064] f5: Focal length of the fifth lens 5;

[0065] f123: Combined focal length of the first lens 1, the second lens 2, and the third lens 3;

[0066] CT5: Central thickness of the fifth lens 5 along the optical axis.

[0067] Embodiment Two:

[0068] On the basis of Embodiment One, the specific parameters are selected as f = 1.14 mm, Fno = 1.59, FOV = 163.31°, and the aspherical coefficients are obtained as follows:

[0069]

[0070]

[0071]

[0072] Specifically, by the data in the above table, the following can be generated Figure 2 and Figure 3 .

[0073] Embodiment Three:

[0074] On the basis of embodiment one, the specific parameters are selected as f = 1.14 mm, Fno = 1.58, FOV = 163.62°, and aspherical coefficients are obtained as follows:

[0075]

[0076]

[0077]

[0078] Specifically, by the data in the above table, the following can be generated: Figure 4 and Figure 5 .

[0079] Embodiment four:

[0080] On the basis of embodiment one, the specific parameters are selected as f = 1.13 mm, Fno = 1.58, FOV = 165.22°, and aspherical coefficients are obtained as follows:

[0081]

[0082]

[0083]

[0084] Specifically, by the data in the above table, the following can be generated: Figure 6 and Figure 7 .

[0085] Embodiment five:

[0086] On the basis of embodiment one, the specific parameters are selected as f = 1.13 mm, Fno = 1.58, FOV = 164.99°, and aspherical coefficients are obtained as follows:

[0087]

[0088]

[0089]

[0090] Specifically, by the data in the above table, the following can be generated: Figure 8 and Figure 9 .

[0091] In the above table: f represents the focal length, Fno represents the aperture number, and FOV represents the field of view. These three parameters jointly act on the design of the high-pixel long-focus camera to ensure that the user can obtain high-quality images.

[0092] The utility model discloses a through Figure 2 、 Figure 4 、 Figure 6 And Figure 8 The mutual comparison of the distortion curve changes in the middle obtains: the size of the deformation of the object after imaging through the lens, and the closer the distortion curve is to 0, the closer the shape of imaging is to the shape of the object.

[0093] And, through the mutual comparison of the axial chromatic aberration curve changes in Figure 3 、 Figure 5 、 Figure 7 And Figure 9 Each curve represents the focal point position of light of different wavelengths after passing through the lens, and the closer the different curves are, the better the chromatic aberration effect of the lens.

[0094] The wide-angle high-definition camera, through the five-lens design composed of the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5 and the diaphragm 6, and the combination of the surface structure of each lens and the optimal range of optical parameters, the optical system of the camera has the characteristics of wide-angle high definition, and has good imaging quality, can realize high-definition imaging, so that the imaging effect can be closer to the photographed object itself, thereby realizing the high-quality, high-resolution and high-definition of the photographed picture, and better adapting to the use of high-imaging-quality portable equipment, and ensuring the shooting needs of people.

[0095] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A wide-angle high-definition camera, comprising a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), and a fifth lens (5), characterized in that, The object side and the image side of the first lens (1), the second lens (2), the third lens (3), the fourth lens (4), and the fifth lens (5) are both aspherical surfaces. It further includes an aperture stop (6) disposed between the second lens (2) and the third lens (3). Among them, the first lens (1) and the fifth lens (5) both have negative refractive powers. The second lens (2), the third lens (3), and the fourth lens (4) all have positive refractive powers. The object sides of the first lens (1) and the fifth lens (5) are convex surfaces at the paraxial region. The object side of the second lens (2) is a convex surface. The image side of the third lens (3) is a convex surface. The object side of the fourth lens (4) is a concave surface at the paraxial region. The image side of the fourth lens (4) is a convex surface at the paraxial region. The wide-angle high-definition camera satisfies the following relationships: 1.0620 < f / R5 < 1.0680, 2.23 < V4 / V2 < 2.53, where f is the focal length of the high-definition optical imaging lens, R5 is the radius of curvature of the object side of the fifth lens (5), V4 is the Abbe number of the fourth lens (4), and V2 is the Abbe number of the second lens (2).

2. A wide-angle high-definition camera according to claim 1, characterized in that, The wide-angle high-definition camera satisfies the following relationship: 2.15 < (D23 + CT3) / f < 2.18, where D23 is the distance on the optical axis from the image side of the second lens (2) to the object side of the third lens (3), and CT3 is the thickness of the third lens (3) on the optical axis.

3. A wide-angle high-definition camera according to claim 1, characterized in that, The wide-angle high-definition camera satisfies the following relationship: 0.15 < f / TL < 0.23, where TL is the distance on the optical axis from the first lens (1) to the imaging surface.

4. A wide-angle high-definition camera according to claim 1, characterized in that, The wide-angle high-definition camera satisfies the following relationship: 4.61 < TD / T12 < 4.66, where TD is the distance on the optical axis from the object side surface of the first lens (1) to the image side surface of the fifth lens (5), and T12 is the distance on the optical axis between the first lens (1) and the second lens (2).

5. A wide-angle high-definition camera according to claim 1, characterized in that, The wide-angle high-definition camera satisfies the following relationship: 5.22 < TTL / f < 5.36, where TTL is the total optical length of the imaging optical lens.

6. A wide-angle high-definition camera according to claim 1, characterized in that, The wide-angle high-definition camera satisfies the following relationship: 1.00 < T34 / AAT < 1.56, where T34 is the air gap on the optical axis from the image side of the third lens (3) to the object side of the fourth lens (4), and AAT is the sum of the air gaps between each adjacent lens from the first lens 1 to the fifth lens (5).

7. A wide-angle high-definition camera according to claim 1, characterized in that, The wide-angle high-definition camera satisfies the following relationship: 2.26 < f / (f1 + f4) < 2.89, where f1 is the focal length of the first lens (1) and f4 is the focal length of the fourth lens (4).

8. A wide-angle high-definition camera according to claim 1, characterized in that, The wide-angle high-definition camera satisfies the following relationship: 0.05 < f / f123 < 0.09, where f123 is the combined focal length of the first lens (1), the second lens (2), and the third lens (3).

9. A wide-angle high-definition camera according to claim 1, characterized in that, The wide-angle high-definition camera satisfies the following relationship: -23.86 < f5 / CT5 < -22.06, where f5 is the focal length of the fifth lens (5) and CT5 is the central thickness of the fifth lens (5) along the optical axis.

Images