VR imaging system

Abstract

The invention discloses a VR imaging system, and belongs to the technical field of VR imaging. A VR imaging system comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from an object side surface to an image side surface, the object side surface and the image side surface of the first lens are spherical surfaces, and the object side surfaces and the image side surfaces of the second lens, the third lens, the fourth lens and the fifth lens are aspheric surfaces; by adopting the design of the first lens, the second lens, the third lens, the fourth lens and the fifth lens, the surface shape structures of the lenses are combined with the optimal range of optical parameters, so that the imaging system can achieve the day and night confocal characteristic; therefore, the system can simultaneously satisfy the layering sense of high definition, ultra-large field angle and high image, thereby improving the visual effect of the VR imaging system, and facilitating the improvement of the use experience of a user.

Description

Technical Field

[0001] The present invention relates to the field of VR imaging technology, and in particular to a VR imaging system. Background Art

[0002] The VR imaging system is a display system used to create a virtual reality experience. It combines advanced display technology to give people an immersive visual experience. It then uses virtual roaming software to simulate two-dimensional images of scenes or objects from all angles into a display space with certain interactive functions and three-dimensional effects, allowing viewers to truly gain a strong and shocking visual experience and feel as if they are in the scene.

[0003] In actual use, the current VR imaging system cannot simultaneously meet the requirements of high definition, ultra-large field of view, and high sense of layering of the picture, which affects the visual effect of the VR imaging system and is not conducive to the user experience. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the VR imaging system in the prior art cannot simultaneously meet the requirements of high definition, ultra-large field of view, and high sense of layering of the picture, thereby affecting the visual effect of the VR imaging system, and to propose a VR imaging system.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A VR imaging system comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged in sequence from an object side surface to an image side surface, wherein the object side surface and the image side surface of the first lens are both spherical surfaces, and the object side surfaces and the image side surfaces of the second lens, the third lens, the fourth lens and the fifth lens are both aspherical surfaces, and further comprises an aperture stop arranged between the second lens and the third lens, wherein the first lens, the second lens and the fourth lens all have negative refractive power, the third lens and the fifth lens all have positive refractive power, the object side surfaces of the first lens and the second lens are both convex surfaces, the image side surfaces of the third lens and the fifth lens are both convex surfaces, the object side surface and the image side surface of the fourth lens are both concave surfaces, the -0.979<f / R4<-0.766, and the 79.11<V2+V4<79.21.

[0007] In order to select the range of the vertical distance between the inflection point of the image side of the fourth lens and the optical axis, preferably, the 1.083 <YC42 / f<1.554。

[0008] In order to select the focal length of the imaging lens and the range of the distance from the first lens to the imaging plane on the optical axis, preferably, the 0.145 <f / TL<0.165。

[0009] In order to select the sagittal height of the image side surface of the fourth lens at the maximum effective radius and the range of the axial air interval between the fourth lens and the fifth lens, preferably, the 0.883 <SAG42 / T45<2.132。

[0010] In order to select the total optical length of the camera optical lens and the focal length range of the high-definition optical imaging lens, preferably, the 6.066 <TTL / f<6.876。

[0011] In order 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 first lens to the fifth lens, preferably, the 0.506 <T34 / AAT<0.983。

[0012] In order to select the focal length of the high-definition optical imaging lens and the range of the focal length of the first lens plus the focal length of the fourth lens, preferably, the -0.219 <f / (f1+f4)<-0.15。

[0013] In order to select the focal length of the imaging lens and the range of the combined focal lengths of the first lens, the second lens and the third lens, preferably, the -0.10 <f / f123<-0.091。

[0014] In order to select the range of the focal length of the fourth lens and the thickness of the fourth lens on the optical axis, preferably, the -1.912 <f4 / CT4<-1.567。

[0015] Compared with the prior art, the present invention provides a VR imaging system, which has the following beneficial effects:

[0016] 1. The VR imaging system adopts the design of the first lens, the second lens, the third lens, the fourth lens and the fifth lens, and combines the surface structure of each lens with the optimization range of the optical parameters, so that the imaging system can achieve the characteristics of day and night confocality, and thus can make the system meet the requirements of high definition, ultra-large field of view, and high picture layering, thereby improving the visual effect of the VR imaging system and improving the user experience.

[0017] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention solves the problem that the VR imaging system in the existing technology cannot simultaneously meet the requirements of high definition, ultra-large field of view, and high sense of layering of the picture, thereby affecting the visual effect of the VR imaging system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a plane exploded diagram of a VR imaging system proposed by the present invention;

[0019] Figure 2Distortion of a VR imaging system proposed by the present invention Figure 1 ;

[0020] Figure 3 Axial chromatic aberration curve of a VR imaging system proposed by the present invention Figure 1 ;

[0021] Figure 4 Distortion of a VR imaging system proposed by the present invention Figure 2 ;

[0022] Figure 5 Axial chromatic aberration curve of a VR imaging system proposed by the present invention Figure 2 ;

[0023] Figure 6 Distortion of a VR imaging system proposed by the present invention Figure 3 ;

[0024] Figure 7 Axial chromatic aberration curve of a VR imaging system proposed by the present invention Figure 3 ;

[0025] Figure 8 Distortion of a VR imaging system proposed by the present invention Figure 4 ;

[0026] Fig. 9 Axial chromatic aberration curve of a VR imaging system proposed by the present invention Figure 4 .

[0027] In the figure: 1, first lens; 2, second lens; 3, aperture; 4, third lens; 5, fourth lens; 6, fifth lens. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] Embodiment 1:

[0031] Reference Figure 1, an embodiment of the present invention provides a VR imaging system, comprising a first lens 1, a second lens 2, a third lens 4, a fourth lens 5 and a fifth lens 6 arranged in sequence from the object side to the image side, the object side and the image side of the first lens 1 are both spherical surfaces, the object side and the image side of the second lens 2, the third lens 4, the fourth lens 5 and the fifth lens 6 are both aspherical surfaces, and also includes an aperture 3 arranged between the second lens 2 and the third lens 4, which is used to control the amount of light passing through the lens, wherein the first lens 1, the second lens 2 and the fourth lens 5 all have negative refractive power, and the third lens 4 and the fifth lens 6 all have positive refractive power, the positive and negative refractive power can make the incident light diffuse outward, expand the field of view, reduce distortion, and thus optimize the optical performance of the entire system, the object side surfaces of the first lens 1 and the second lens 2 are both convex surfaces, the image side surfaces of the third lens 4 and the fifth lens 6 are both convex surfaces, the object side surface and the image side surface of the fourth lens 5 are both concave surfaces, -0.979<f / R4<-0.766, 79.11<V2+V4<79.21.

[0032] Specifically, when in use, by adopting a five-lens design of a first lens 1, a second lens 2, a third lens 4, a fourth lens 5 and a fifth lens 6, and combining the surface structure of each lens with the optimized range of optical parameters, the imaging system can achieve the characteristics of day and night confocality, so that the system can simultaneously meet the requirements of high definition, ultra-large field of view, and high sense of layering of the picture, thereby improving the visual effect of the VR imaging system and helping to improve the user experience.

[0033] 1.083 above <YC42 / f<1.554。

[0034] Specifically, through the numerical interval, the range of the inflection point of the image side surface of the fourth lens 5 can be selected, and the range of the vertical distance between the optical axes can also be selected.

[0035] Above 0.145 <f / TL<0.165。

[0036] Specifically, through the numerical range, the focal length range of the imaging lens can be selected, and the range of the distance from the first lens 1 to the imaging plane on the optical axis can also be selected.

[0037] Above 0.883 <SAG42 / T45<2.132。

[0038] Specifically, through the numerical interval, the range of the sagittal height of the image side surface of the fourth lens 5 at the maximum effective radius can be selected, and the range of the on-axis air space between the fourth lens 5 and the fifth lens 6 can also be selected.

[0039] Above 6.066 <TTL / f<6.876。

[0040] Specifically, through the numerical range, the range of the total optical length of the camera optical lens can be selected, and the range of the focal length of the high-definition optical imaging lens can also be selected.

[0041] Above 0.506 <T34 / AAT<0.983。

[0042] Specifically, through the numerical interval, the range of the air gap on the optical axis from the image side of the third lens 4 to the object side of the fourth lens 5 can be selected, and the range of the sum of the air gaps between adjacent lenses from the first lens 1 to the fifth lens 6 can also be selected.

[0043] Above -0.219 <f / (f1+f4)<-0.15。

[0044] Specifically, through the numerical range, the focal length range of the high-definition optical imaging lens can be selected, and the range of the focal length of the first lens 1 plus the focal length of the fourth lens 5 can also be selected.

[0045] Above -0.10 <f / f123<-0.091。

[0046] Specifically, through the numerical range, the focal length range of the high-definition optical imaging lens can be selected, and the range of the combined focal length of the first lens 1, the second lens 2 and the third lens 4 can also be selected.

[0047] Above -1.912 <f4 / CT4<-1.567。

[0048] Specifically, through the numerical interval, the focal length range of the fourth lens 5 can be selected, and the thickness range of the fourth lens 5 on the optical axis can also be selected.

[0049] The meanings of “alphanumeric values” in the present invention are as follows:

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

[0051] R4: the radius of curvature of the object side of the fourth lens 5;

[0052] V2: Abbe number of the second lens 2 (the higher the Abbe number, the less chromatic aberration and the better the image quality);

[0053] V4: Abbe number of the fourth lens 5 (the higher the Abbe number, the less chromatic aberration and the better the image quality);

[0054] D23: the distance on the optical axis from the image side of the second lens 2 to the object side of the third lens 4;

[0055] CT3: thickness of the third lens 4 on the optical axis;

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

[0057] SAG42: sagittal height of the image side surface of the fourth lens 5 at the maximum effective radius;

[0058] T45: an axial air space between the fourth lens 5 and the fifth lens 6;

[0059] TTL: total optical length of the camera optical lens;

[0060] T34: air gap on the optical axis from the image side of the third lens 4 to the object side of the fourth lens 5;

[0061] AAT: the sum of the air gaps between adjacent lenses from the first lens 1 to the fifth lens 6;

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

[0063] f4: focal length of the fourth lens;

[0064] f123: the combined focal length of the first lens 1, the second lens 2 and the third lens 4;

[0065] CT4: thickness of the fourth lens 5 on the optical axis;

[0066] YC42: the vertical distance between the inflection point of the image-side surface of the fourth lens 5 and the optical axis.

[0067] Embodiment 2:

[0068] Based on the first embodiment, the specific parameters selected are f=0.73 mm, Fno=2.24, FOV=171.87° and aspheric coefficient to obtain the following table:

[0069]

[0070]

[0071]

[0072]

[0073] Specifically, through the data in the above table, it is possible to generate Figure 2 and Figure 3 .

[0074] Embodiment three:

[0075] Based on the first embodiment, the specific parameters selected are f=0.93 mm, Fno=2.82, FOV=115.65° and aspheric coefficient to obtain the following table:

[0076]

[0077]

[0078]

[0079]

[0080]

[0081] Specifically, through the data in the above table, it is possible to generate Figure 4 and Figure 5 .

[0082] Embodiment 4:

[0083] Based on the first embodiment, the specific parameters selected are f=0.81 mm, Fno=2.47, FOV=148.10° and aspheric coefficient to obtain the following table:

[0084]

[0085]

[0086]

[0087] Specifically, through the data in the above table, it is possible to generate Figure 6 and Figure 7 .

[0088] Embodiment five:

[0089] Based on the first embodiment, the specific parameters selected are f=0.85 mm, Fno=2.60, FOV=137.36° and aspheric coefficient to obtain the following table:

[0090]

[0091]

[0092]

[0093] Specifically, through the data in the above table, it is possible to generate Figure 8 and Fig. 9 .

[0094] In the above table: f represents focal length, Fno represents aperture number, and FOV represents field of view. These three parameters work together in the design of VR imaging systems to ensure that users can obtain high-quality visual experience. Choosing the right focal length, aperture number and field of view is crucial to creating a comfortable viewing environment and a realistic virtual reality experience.

[0095] The present invention is achieved by Figure 2 , Figure 4 , Figure 6 as well as Figure 8 The comparison of the changes in the distortion curves shows that the size of the deformation of the object after being imaged by the lens is that the closer the distortion curve is to 0, the closer the image shape is to the shape of the object;

[0096] And, through Figure 3 , Figure 5 , Figure 7 as well as Fig. 9 The mutual comparison of the changes in the central axial chromatic aberration curves shows that each curve represents the focal 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.

[0097] The VR imaging system adopts the design of the first lens 1, the second lens 2, the third lens 4, the fourth lens 5 and the fifth lens 6, and combines the surface structure of each lens with the optimization range of the optical parameters, so that the imaging system can achieve the characteristics of day and night confocality, and thus can make the system meet the requirements of high definition, ultra-large field of view, and high picture layering, thereby improving the visual effect of the VR imaging system and helping to improve the user experience.

[0098] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A VR imaging system, comprising a first lens (1), a second lens (2), a third lens (4), a fourth lens (5) and a fifth lens (6) arranged in sequence from the object side to the image side, characterized in that: The object side surface and the image side surface of the first lens (1) are both spherical surfaces, the object side surface and the image side surface of the second lens (2), the third lens (4), the fourth lens (5) and the fifth lens (6) are all aspherical surfaces, and further comprises an aperture stop (3) arranged between the second lens (2) and the third lens (4). The first lens (1), the second lens (2) and the fourth lens (5) all have negative refractive power, the third lens (4) and the fifth lens (6) all have positive refractive power, the object side surfaces of the first lens (1) and the second lens (2) are both convex, the image side surfaces of the third lens (4) and the fifth lens (6) are both convex, the object side surface and the image side surface of the fourth lens (5) are both concave, -0.979<f / R4<-0.766, and 79.11<V2+V4<79.

21.

2. A VR imaging system according to claim 1, characterized in that: 1.083 <YC42 / f<1.554。 3. A VR imaging system according to claim 1, characterized in that: 0.145 <f / TL<0.165。 4. A VR imaging system according to claim 1, characterized in that: 0.883 <SAG42 / T45<2.132。 5. A VR imaging system according to claim 1, characterized in that: 6.066 <TTL / f<6.876。 6. A VR imaging system according to claim 1, characterized in that: 0.506 <T34 / AAT<0.983。 7. A VR imaging system according to claim 1, characterized in that: -0.219 <f / (f1+f4)<-0.15。 8. The VR imaging system according to claim 1, characterized in that: -0.10 <f / f123<-0.091。 9. A VR imaging system according to claim 1, characterized in that: -1.912 <f4 / CT4<-1.567。

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