Composite zoom lens
By using a combination technology of thin glass sheet and liquid lens in the composite zoom lens, the problems of large lens stroke, low imaging deformation and light transmittance in the existing lens focal length adjustment technology are solved, and efficient adjustable focal length and high-quality imaging are achieved under the traditional glasses scale.
Patent Information
- Application Number
- CN202410883042.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-05-06
AI Technical Summary
The existing lens focal length adjustment technology has problems such as large lens stroke, deformation of imaging, low light transmittance, low surface finish and aging of glue films, making it difficult to achieve efficient adjustable focal length and high-quality imaging under the traditional glasses scale.
A composite zoom lens composed of a lens, a thin glass sheet and a liquid lens is used to utilize the flexibility of the thin glass sheet and the adjustability of the liquid lens to deform the thin glass sheet by compressing or stretching the liquid chamber glue ring to achieve convex or concave deformation of the liquid lens, thereby adjusting the focal length of the lens.
It realizes efficient adjustable focal length and high-quality imaging at the traditional glasses scale, avoiding the problems of imaging deformation and low light transmittance, while improving the stability of the lens and reliability of long-term use.
Smart Images
Figure CN119937070A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a composite zoom lens, specifically to a zoom lens technology that is a composite of a solid lens and a liquid lens, which can be used in the fields of projection display, microscopes, telescopes, glasses, etc. Background Art
[0002] The current lens focal length adjustment has the following zoom modes when the number and combination of lenses remain unchanged: One is to change the object distance by adjusting the distance between lenses, thereby achieving zoom. The disadvantage is that the lens requires a larger travel.
[0003] The second is a lens composed of a cylinder, a transparent adhesive film, and a transparent liquid. When the volume of the transparent liquid is changed, the curvature of the lens can be changed to achieve zooming. The disadvantages are: because the adhesive film is easily stretched and deformed, the lens surface formed under the action of liquid gravity is aspherical, resulting in imaging deformation; the lens transmittance is low and the surface finish is not high enough, resulting in low imaging quality; after long-term aging and stretching, the elasticity of the adhesive film decreases and cannot be restored.
[0004] The third is the liquid crystal lens, which changes the optical axis and refractive index of the liquid crystal under the drive of the electric field to achieve zoom. The disadvantages are: it is easily affected by temperature; the lens transmittance is low.
[0005] Fourth, the lens realized by the principle of liquid electrowetting can achieve zoom by changing the shape of the droplets through an external DC voltage. The advantages of the lens are small size and fast zoom speed. The disadvantage is that it cannot be applied to large-size lenses, glasses, etc.
[0006] The composite zoom lens involved in the present application has a light-transmitting body composed of a lens, a thin glass sheet (including an inorganic glass sheet and an organic glass sheet), and a liquid lens. It can achieve adjustable focal length within the scale of traditional glasses, and has high light transmittance and high imaging quality.
[0007] The present application makes full use of the flexibility, strength, and micro-elastic deformation characteristics of thin glass sheets. The liquid lens constructed by encapsulating thin glass sheets with transparent liquids can have a thickness of millimeters. Multiple layers of liquid lenses can be stacked and encapsulated to achieve a larger zoom range. Summary of the invention
[0008] The present application is a composite zoom lens, which is composed of a lens 1, an air chamber sealing ring 2, a thin glass sheet 3, a liquid chamber rubber ring 4, a thin glass sheet 5, an air chamber sealing ring 6, a lens 7, and a liquid lens 8.
[0009] In the composite zoom lens of the present application, the air chamber sealing ring 2 and the air chamber sealing ring 6 are made of hard materials and cannot be compressed or stretched; the liquid chamber rubber ring 4 is made of elastic material and can be compressed or stretched; the lens 1 and the lens 7 can be convex lenses or concave lenses; there is air C in the cavity formed by the lens 1, the air chamber sealing ring 2 and the thin glass sheet 3; there is liquid lens 8 in the liquid chamber formed by the thin glass sheet 3, the liquid chamber rubber ring 4 and the thin glass sheet 5; there is air D in the cavity formed by the thin glass sheet 5, the air chamber sealing ring 6 and the lens 7; there is air hole A on the air chamber sealing ring 2 and air hole B on the air chamber sealing ring 6; the material of the thin glass sheet refers to an inorganic glass sheet or an organic glass sheet.
[0010] The volume of the liquid lens of the composite zoom lens of the present application is constant. When the composite zoom lens is compressed along the axial direction of the lens, the air chamber sealing ring 2 and the air chamber sealing ring 6 will not be compressed, while the liquid chamber glue ring 4 will be compressed, the thin glass sheet 3 and the thin glass sheet 5 will be deformed into a curved surface, and the liquid lens 8 will be deformed into a liquid convex lens, and at the same time, the air C and the air D will flow out of the corresponding volume of air from the pore A and the pore B respectively; contrary to the compression zoom lens, when the zoom lens is stretched, the air chamber sealing ring 2 and the air chamber sealing ring 6 will not be stretched, while the liquid chamber glue ring 4 will be stretched, the thin glass sheet 3 and the thin glass sheet 5 will be deformed into a curved surface, and the liquid lens 8 will be deformed into a liquid concave lens, and at the same time, the air C and the air D will flow into the corresponding volume of air from the pore A and the pore B respectively.
[0011] The focal length of the composite zoom lens of the present application is formed by the focal length of lens 1 , the focal length of the liquid lens, and the focal length of lens 7 .
[0012] The composite zoom lens of the present application can increase the number of liquid lenses, and the focal length of the zoom lens is formed by the focal length of lens 1, the focal lengths of all liquid lenses, and the focal length of lens 7. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 1 is a schematic diagram of a composite zoom lens structure including a liquid lens, and I is a local enlarged view, wherein: 1. lens, 2. air chamber sealing ring, 3. thin glass sheet, 4. liquid chamber rubber ring, 5. thin glass sheet, 6. air chamber sealing ring, 7. lens, 8. liquid lens.
[0014] Figure 2 1 is a schematic diagram of the structure of a composite zoom lens including two liquid lenses, II is a local enlarged diagram, wherein: 1, lens, 2, air chamber sealing ring, 3, thin glass sheet, 4, liquid chamber rubber ring, 5, thin glass sheet, 6, air chamber sealing ring, 7, lens, 8, liquid lens, 10, thin glass sheet, 11, liquid chamber rubber ring, 12, liquid lens, 13, thin glass sheet, 14, air chamber sealing ring. DETAILED DESCRIPTION
[0015] See also Figure 1 The composite zoom lens having a liquid lens structure is composed of a lens 1, an air chamber sealing ring 2, a thin glass sheet 3, a liquid chamber rubber ring 4, a thin glass sheet 5, an air chamber sealing ring 6, a lens 7, and a liquid lens 8.
[0016] See also Figure 1 In the composite zoom lens of the present application, the air chamber sealing ring 2 and the air chamber sealing ring 6 are made of hard materials and cannot be compressed or stretched; the liquid chamber rubber ring 4 is made of elastic material and can be compressed or stretched; the lens 1 and the lens 7 can be convex lenses or concave lenses; there is air in the cavity composed of the lens 1, the air chamber sealing ring 2 and the thin glass sheet 3; there is a liquid lens 8 in the liquid chamber composed of the thin glass sheet 3, the liquid chamber rubber ring 4 and the thin glass sheet 5; there is air in the cavity composed of the thin glass sheet 5, the air chamber sealing ring 6 and the lens 7; there is air in the cavity composed of the air chamber sealing ring 2 and the air chamber sealing ring 6; the material of the thin glass sheet refers to an inorganic glass sheet or an organic glass sheet.
[0017] See also Figure 1 In the composite zoom lens of the present application, the liquid volume of the liquid lens is constant. When the composite zoom lens is compressed along the axial direction of the lens, the air chamber sealing ring 2 and the air chamber sealing ring 6 are not compressed, while the liquid chamber glue ring 4 is compressed, the thin glass sheet 3 and the thin glass sheet 5 are deformed into curved surfaces, and the liquid lens 8 is deformed into a liquid convex lens, and at the same time, the air C and the air D flow out of the corresponding volumes of air from the pores A and B respectively; contrary to the compression zoom lens, when the zoom lens is stretched, the air chamber sealing ring 2 and the air chamber sealing ring 6 are not stretched, while the liquid chamber glue ring 4 is stretched, the thin glass sheet 3 and the thin glass sheet 5 are deformed into curved surfaces, and the liquid lens 8 is deformed into a liquid concave lens, and at the same time, the air C and the air D flow into the corresponding volumes of air from the pores A and B respectively.
[0018] See also Figure 1 The focal length of the composite zoom lens of the present application is formed by the combined action of lens 1, lens 7 and liquid lens 8.
[0019] The composite zoom lens of the present application can increase the number of liquid lenses, and the focal length of the zoom lens is formed by the focal length of lens 1, the focal lengths of all liquid lenses, and the focal length of lens 7.
[0020] The specific method of increasing the number of liquid lenses in the composite zoom lens of the present application is: for each additional liquid lens, two thin glass sheets, a liquid chamber adhesive ring, a liquid lens, and an air chamber sealing ring need to be added accordingly.
[0021] See also Figure 2 , is a compound zoom lens consisting of two liquid lenses. Figure 1 On the basis of the structure, a thin glass sheet 10, a liquid chamber rubber ring 11, a liquid lens 12, a thin glass sheet 13, and an air chamber sealing ring 14 are added, and its focal length is formed by the combined action of lens 1, lens 7, liquid lens 8, and liquid lens 12.
Claims
1. A composite zoom lens, comprising a lens 1, an air chamber sealing ring 2, a glass sheet 3, a liquid chamber rubber ring 4, a glass sheet 5, an air chamber sealing ring 6, a lens 7, and a liquid lens 8.
2. The composite zoom lens according to claim 1, characterized in that: Lens 1 and lens 7 can be convex lenses or concave lenses; there is air C in the cavity composed of lens 1, air chamber sealing ring 2 and glass sheet 3; there is liquid lens 8 in the liquid chamber composed of glass sheet 3, liquid chamber rubber ring 4 and glass sheet 5, and the volume of liquid lens 8 is constant; there is air D in the cavity composed of glass sheet 5, air chamber sealing ring 6 and lens 7; there is air hole A on the air chamber sealing ring 2, and there is air hole B on the air chamber sealing ring 6.
3. The composite zoom lens according to claim 1 or 2, characterized in that: The air chamber sealing ring 2 and the air chamber sealing ring 6 are made of hard materials and cannot be compressed or stretched; the liquid chamber rubber ring 4 is made of elastic material and can be compressed or stretched; the material of the glass sheet 3 and the glass sheet 5 is inorganic glass sheet or organic glass sheet.
4. The composite zoom lens according to claim 1 or 2, characterized in that: Its focal length is formed by the focal length of lens 1, the focal length of liquid lens 8 and the focal length of lens 7.
5. The composite zoom lens according to claim 1 or 2, characterized in that: The number of liquid lenses can be increased, and the focal length of the zoom lens is formed by the focal length of lens 1, the focal lengths of all liquid lenses, and the focal length of lens 7; for every two glass sheets, a liquid chamber rubber ring, a liquid lens, and an air chamber sealing ring, a liquid lens is added.