Lens capable of foldback photography
By adding a hollowed-out reflective filter or light-blocking plate to a regular lens, the problems of fixed aperture, fully manual focusing, and poor image quality of reflective lenses are solved, enabling autofocus and adjustable aperture, expanding the focal length range, and increasing the variety and application range of lenses.
Patent Information
- Application Number
- CN202520033136.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing reflex lenses suffer from problems such as fixed aperture, fully manual focus, poor image quality, and limited application range, especially the lack of adjustable aperture and autofocus functions.
Adding a hollowed-out reflective filter or light-blocking plate to the rear or front lens element of a regular lens creates a simple and reasonable design that enables autofocus and adjustable aperture, expands the focal length range, and enhances the lens's reflective photography capabilities.
It retains the high image quality and adjustable aperture of ordinary lenses, while adding a telephoto effect, expanding the applicable focal length, and increasing the number of lenses and usage flexibility.
Smart Images
Figure CN223582299U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a camera and cell -phone lens technical field, especially in a kind of lens that can fold back photography. BACKGROUND
[0002] There are camera fold-back lenses on the market at present, but there are some problems, including: 1, aperture fixed: fold-back lenses usually only have a first aperture, cannot adjust aperture size, and are mostly small aperture, limiting the control of depth of field and the flexibility of exposure;2, full manual focusing: due to the special structure of fold-back lenses, it is difficult to achieve automatic focusing, and a focusing ring needs to be manually adjusted to obtain a clear picture;3, slightly poor lens imaging quality: compared with some traditional ordinary lenses, the imaging quality of fold-back lenses is slightly inferior, and the sharpness and detail performance are reduced;4, only long focal and super long focal fold-back lenses are available on the market, and the application range is limited.
[0003] The preliminary study found that the hollow type fold-back filter can significantly improve the black shadow and convergence phenomenon of the existing non-hollow type fold-back filter, improve the picture quality, and significantly expand the matching lens focal length and aperture range. Therefore, the hollow fold-back filter is designed to be integrated into an ordinary lens after research and demonstration, which helps to solve some problems existing in the current fold-back lenses.
[0004] The lens capable of fold-back photography increases a fixed or detachable hollow fold-back filter in the rear end of the rear lens of the original camera lens or cell phone external lens, or directly increases a light shield on the front lens or rear lens, so that the front lens or rear lens of the ordinary lens has the function of fold-back filter. In this way, the lens not only retains the original functions of the ordinary lens, such as high image quality, adjustable aperture and automatic focusing function, but also increases the fold-back photography effect. Moreover, the short focal and medium-short focal fixed focus and zoom lenses with a hollow fold-back filter in the rear end of the rear lens or a hollow light shield on the rear lens can also perform fold-back photography, greatly increasing the number of fold-back photography lenses. Utility model content
[0005] The utility model aims at providing a lens capable of fold-back photography, which is very simple and reasonable in design, stable and reliable in connection. When installed on a camera or a cell phone, the lens can not only retain the original lens functions, but also increase the fold-back photography effect. The short focal and medium-short focal fixed focus and zoom lenses with a hollow fold-back filter in the rear end of the rear lens or a hollow light shield on the rear lens can also perform fold-back photography, greatly increasing the number of fold-back photography lenses. The lens can be quickly connected with the camera, and the lens can be conveniently disassembled and replaced.
[0006] In order to solve the above technical problems, the technical scheme of the utility model is as follows:
[0007] A lens capable of fold-back photography, comprising a lens frame, a fold-back lens and a plurality of lenses.
[0008] The mirror frame is a ring-shaped connecting piece for connecting with a camera body or a mobile phone cage, etc., and is provided with an inner cavity in the middle, and the return mirror and the plurality of lenses are arranged in the inner cavity of the mirror frame in a spaced and coaxial manner;
[0009] The return mirror is arranged before or after the plurality of lenses;
[0010] The mirror frame is provided with a lens mounting groove for mounting the return mirror, and the return mirror is arranged in the mounting groove;
[0011] The return mirror is a light-transmitting round piece made of glass or resin, and is provided with a light-shielding piece in the middle;
[0012] The light-shielding piece is generally circular, and is provided with a hollow area, i.e., a light-transmitting hole of unspecified shape, in the middle, and the hollow area is of an unspecified pattern, generally circular, heart-shaped, plant pattern, animal pattern, etc.
[0013] Optionally, the light-shielding piece is a film layer formed by coating on the return mirror.
[0014] Optionally, the light-shielding piece is an ink layer formed by silk printing on the return mirror.
[0015] Optionally, the inner wall of the rear end of the mirror frame is provided with a thread for threadedly connecting with the return mirror.
[0016] Optionally, the mirror frame and the return mirror are integrally formed.
[0017] The beneficial effects of the present application are as follows:
[0018] The design is very simple and reasonable, and the connection is stable and reliable; when the lens is installed on a camera or a mobile phone, the original lens function can be retained, and the return photography effect can be increased. The short-focus and medium-short-focus lens with the hollow light-shielding structure in the rear lens can also perform return photography, greatly increasing the number of returnable photography lenses;
[0019] The lens can be quickly connected with the camera, and the lens can be conveniently disassembled and replaced. DRAWINGS
[0020] Fig. 1 Fig. 1 is a connection relationship diagram (cross-sectional view) of a lens capable of return photography and a camera body according to the present application;
[0021] Fig. 2 Fig. 2 is a connection relationship diagram (structure exploded view) of a lens capable of return photography and a camera body according to the present application;
[0022] Fig. 3 Fig. 3 is a structure diagram (when the return mirror is arranged at the rear end) of a lens capable of return photography according to the present application. DETAILED DESCRIPTION
[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0024] like Figs. 1-3 As shown, a lens capable of telephoto photography includes a frame 1, a telephoto lens 2, and several lens elements 7.
[0025] The frame is a ring-shaped connector for connecting to a camera body or mobile phone cage, etc., and has an inner cavity in the middle. The reflective lens 2 and several lenses 7 are arranged in a spaced and coaxial manner in the inner cavity of the frame 1.
[0026] The reflective lens 2 is positioned in front of or behind several lenses 7;
[0027] The frame 1 is provided with a lens mounting groove 10 for mounting the reflex lens 2; the reflex lens 2 is disposed in the mounting groove 10;
[0028] The reflective lens 2 is a light-transmitting circular sheet made of glass or resin, with a light-shielding sheet 3 in the middle;
[0029] The light-blocking sheet 3 is usually circular, with a hollow area 4 in the middle, which is a light-transmitting hole of an unspecified shape. The hollow area 4 is an unspecified shape, usually including circles, hearts, plant shapes, animal shapes, etc.
[0030] Optionally, the light-shielding sheet 3 is an opaque film layer formed by coating on the reflective lens 2.
[0031] Optionally, the light-shielding sheet 3 is an opaque ink layer formed by screen printing on the reflective lens 2.
[0032] Optionally, the frame 1 and the reflective lens 2 are integrally formed.
[0033] Preferably, the rear end of the lens frame 1 is provided with a mounting slot 10 for the reflective lens 2. When the reflective lens 2 is located behind the lens 7, the reflective lens 2 can be quickly installed and removed. When the reflective lens 2 is removed, the lens of this application is a conventional lens. When the reflective lens 2 is installed, the lens has a reflective filter function, which increases the reflective photography effect.
[0034] For the convenience of the lens and the camera 5 of the application of the quick assembly and replacement, the inner wall of the lens frame 1 is provided with an annular groove 11, and the annular groove 11 is provided with an annular snap ring 6; the outer wall of the annular snap ring 6 is provided with a plurality of raised clamping claws 61, and is further provided with an open slot 62, which is convenient to extrude and deform to reduce, and is put into the annular groove 11, and is restored to the shape and is limited in the annular groove 11 after being put into the annular groove 11. The front (lower) of the annular groove 11 is a lens.
[0035] The front end edge of the camera 5 body (the camera 5 connecting ring) is provided with a flange 51; the flange 51 is buckled with the annular snap ring 6, the raised clamping claws 61 are clamped on the flange 51, and the front end of the flange 51 is blocked by the lens. In this way, the lens and the camera 5 body can be quickly assembled or the lens can be quickly replaced.
[0036] The left and right sides of the raised clamping claw 61 are provided with a material removal groove 63 to increase the elastic deformation performance of the raised clamping claw 61. The raised clamping claw 61 is a V-shaped structure.
[0037] The annular snap ring 6 is a sheet metal ring.
[0038] Preferably, the rear end inner wall of the lens frame 1 is provided with a screw thread, which is convenient for threaded connection with the return lens.
[0039] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the application, and still fall within the protection scope of the application.
Claims
1. A lens capable of flip photography, characterized in that: Including mirror frame, turn-back lens, several lenses; The mirror frame is a ring-shaped connector for connecting with a camera body or a mobile phone rabbit cage, and an inner cavity is arranged in the middle of the mirror frame, the turn-back lens and the several lenses are arranged in the inner cavity of the mirror frame in a spaced and coaxial manner; The turn-back lens is arranged before or after the several lenses; The mirror frame is provided with a lens mounting groove for mounting the turn-back lens, and the turn-back lens is arranged in the mounting groove; The turn-back lens is a light-transmitting round piece made of glass or resin, and a light-shielding piece is arranged in the middle of the turn-back lens; The light-shielding piece is circular, and a hollow area is arranged in the middle of the light-shielding piece.
2. The foldable camera lens of claim 1, wherein: The rear end of the mirror frame is provided with a mounting groove for the turn-back lens.
3. The foldable camera lens of claim 1, wherein: The light-shielding piece is a silk-printed ink layer on the lens.
4. The foldable camera lens of claim 1, wherein: The light-shielding piece is a film layer formed by coating on the lens.
5. The foldable camera lens of claim 1, wherein: The inner wall of the mirror frame is provided with an annular groove, and an annular clasp is arranged in the annular groove; the outer wall of the annular clasp is provided with several raised clamping claws, and an open slot is further arranged on the outer wall; the front of the annular groove is a lens.
6. The foldable camera lens of claim 5, wherein: The front edge of the camera body is provided with a flange; the flange is connected with the annular clasp through buckling, the raised clamping claws are clamped on the flange, and the front end of the flange is blocked and limited by the lens.
7. The foldable camera lens of claim 6, wherein: The left and right sides of the raised clamping claw are provided with material removal grooves; the raised clamping claw is in V-shaped structure.
8. The foldable camera lens of claim 7, wherein: The annular clasp is a thin sheet of metal material.
9. The foldable photographic lens of any of claims 1-6, wherein: The hollow area is circular or heart-shaped or a plant pattern or an animal pattern.
10. The foldable camera lens of claim 2, wherein: The rear end of the mirror frame is provided with a screw thread.