One-way shading lens

Abstract

The utility model relates to the technical field of one-way lenses, in particular to a one-way shading lens. According to the technical scheme, the lens comprises a lens body, the lens body is fixed in a protective outer frame, an extension frame is fixed to the rear side of the protective outer frame, a set of shading lenses are arranged in the extension frame, different optical films are arranged on the different shading lenses, and mounting grooves are formed in the bottom of the extension frame at equal intervals; a rotating frame is rotationally connected in the mounting groove, the shading lens is fixed in the rotating frame, and a fixing assembly is arranged at the position, connected with the outer side wall of the rotating frame, of the outer side of the extension frame. The plurality of shading lenses are arranged behind the lens main body, and each shading lens is provided with the optical film for selectively transmitting and reflecting the light rays of different wavebands, so that the unidirectional shading lens can shade the light rays of different wavebands by rotating the specified shading lenses, and the lens main body does not need to be replaced; the operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of one - way lenses, in particular to a one - way light - shielding lens. Background Art

[0002] A one - way light - shielding lens is a special optical device that can allow light to pass through in one direction while blocking or weakening the penetration of light in another direction. This kind of lens is usually made of special materials and has specific optical properties. It has many uses in practical applications, such as privacy protection, window shading, laser components, optical sensors and other fields.

[0003] The common method for manufacturing a one - way lens is to use multi - layer film coating. By depositing multiple layers of special optical thin films on the lens surface, selective transmission and reflection of light with specific wavelengths or bands are achieved, thereby realizing the one - way light - transmission effect. For different application scenarios, or according to light of different bands, the required optical thin films are somewhat different. However, it is difficult to remove or replace the optical thin films on the one - way lens. When observing and experimenting with different lights, different one - way lenses need to be replaced, reducing the practicality of the one - way lens. Therefore, it is necessary to design a one - way light - shielding lens that can selectively transmit and reflect light of different bands. Summary of the Utility Model

[0004] The purpose of the utility model is to propose a one - way light - shielding lens aiming at the problems existing in the background art.

[0005] The technical solution of the utility model: A one - way light - shielding lens includes a lens body, the lens body is fixed in a protective outer frame, an extension frame is fixed at the rear of the protective outer frame, a group of light - shielding lenses are arranged in the extension frame, different optical thin films are arranged on different light - shielding lenses, a set of installation grooves are equidistantly opened at the bottom of the extension frame, a rotating frame is rotatably connected in the installation groove, the light - shielding lenses are fixed in the rotating frame, and a fixing component is arranged at the outer side of the extension frame and at the connection with the outer side wall of the rotating frame.

[0006] Preferably, the fixing component includes a fixing plate and a telescopic plate, the fixing plate is fixed on the outer side of the extension frame, the telescopic plate is slidably connected to the outer side of the extension frame and is aligned with the fixing plate in position, a threaded rod is rotatably connected to the fixing plate, and the end of the threaded rod is threadedly connected into the telescopic plate.

[0007] Preferably, a set of guide rods are fixed on the fixing plate, the ends of the guide rods are inserted into the telescopic plate and are slidably connected to the telescopic plate.

[0008] Preferably, the end of the threaded rod away from the telescopic plate passes through the fixing plate and is fixed with a knob.

[0009] Preferably, a central rotating shaft is rotatably connected in the installation groove, and the central rotating shaft passes through the rotating frame and is fixedly connected to the rotating frame.

[0010] Preferably, sealing gaskets are fixedly arranged on the front and rear side walls of the rotating frame, and the lens body and the light-shielding lens in the outer extension frame are located on the same straight line.

[0011] Compared with the prior art, the utility model has the following beneficial technical effects: The multi-layer optical films originally deposited on the lens body are respectively deposited on different light-shielding lenses. Then, when different wavelength bands of light need to pass through or be reflected, only the light-shielding lens with a compatible optical film needs to be combined with the lens body, and the operation is simpler, increasing the practicability of the one-way lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a partial external view structure schematic diagram of the utility model;

[0013] Figure 2 is a combined sectional structure schematic diagram of the outer extension frame and the rotating frame of the utility model;

[0014] Figure 3 is a top sectional structure schematic diagram of the utility model;

[0015] Figure 4 is a combined structure schematic diagram of the fixing plate and the telescopic plate of the utility model.

[0016] Reference numerals: 1, protective outer frame; 11, lens body; 2, outer extension frame; 3, installation groove; 31, central rotating shaft; 4, rotating frame; 41, light-shielding lens; 5, fixing assembly; 51, fixing plate; 52, telescopic plate; 53, threaded rod; 54, knob; 55, guide rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions of the utility model will be further described below with reference to the drawings and specific embodiments.

[0018] Embodiment

[0019] As Figures 1-4As shown in the figure, a unidirectional light-shielding lens proposed by the present utility model includes a lens body 11. The lens body 11 is fixed within a protective outer frame 1. An extension frame 2 is fixed to the rear side of the protective outer frame 1. A group of light-shielding lenses 41 are arranged within the extension frame 2. Different optical films are provided on different light-shielding lenses 41. A set of mounting grooves 3 are equidistantly formed at the bottom of the extension frame 2. A rotating frame 4 is rotatably connected within the mounting grooves 3. The light-shielding lenses 41 are fixed within the rotating frame 4. A fixing assembly 5 is provided at the outer side of the extension frame 2 and at the connection with the outer side wall of the rotating frame 4. A central rotating shaft 31 is rotatably connected within the mounting grooves 3. The central rotating shaft 31 passes through the rotating frame 4 and is fixedly connected to the rotating frame 4. Sealing gaskets are fixed to both the front and rear side walls of the rotating frame 4 to increase the sealing performance at the connection between the rotating frame 4 and the side wall of the mounting groove 3. The light-shielding lenses 41 within the lens body 11 and the extension frame 2 are located on the same straight line.

[0020] The fixing assembly 5 includes a fixing plate 51 and a telescopic plate 52. The fixing plate 51 is fixed to the outer side of the extension frame 2. The telescopic plate 52 is slidably connected to the outer side of the extension frame 2 and is aligned with the fixing plate 51 in position. A threaded rod 53 is rotatably connected to the fixing plate 51. The end of the threaded rod 53 is threadedly connected within the telescopic plate 52. A set of guide rods 55 are fixed to the fixing plate 51. The ends of the guide rods 55 are inserted within the telescopic plate 52 and are slidably connected to the telescopic plate 52. The end of the threaded rod 53 away from the telescopic plate 52 passes through the fixing plate 51 and is fixed with a knob 54. By rotating the knob 54, the threaded rod 53 is driven to rotate, and under the limitation of the guide rods 55, the telescopic plate 52 can freely expand and contract at the end of the fixing plate 51.

[0021] In this embodiment, the light-shielding lenses 41 with different optical films are arranged side by side at the rear side of the lens body 11. When light enters from the front end of the lens body 11, it passes through the lens body 11 and then sequentially passes through the light-shielding lenses 41. At this time, different optical films on the light-shielding lenses 41 can selectively transmit and reflect light of different wavelength bands, achieving the purpose of a unidirectional lens. When aiming for unidirectional transmission of different lights or setting the transmission of specified wavelength band light, a specified light-shielding lens 41 can be selected to be flipped, so that the light of this wavelength band can directly pass through, increasing the overall practicality. When switching, only the light-shielding lens 41 with the specified optical film needs to be flipped, which is simple and convenient to operate. After the rotating frame 4 drives the light-shielding lens 41 to flip downward, the incident light will not pass through the flipped light-shielding lens 41, and thus will not selectively transmit and reflect the light of this area's wavelength band. And after the rotating frame 4 flips, the telescopic plate 52 is extended and inserted into the gap at the connection between the extension frame 2 and the rotating frame 4, so that the position of the rotating frame 4 can be fixed and it cannot be flipped. Conversely, the rotating frame 4 can be freely rotated. By rotating the knob 54, the threaded rod 53 is driven to rotate, and under the limitation of the guide rods 55, the telescopic plate 52 can freely expand and contract at the end of the fixing plate 51.

[0022] The above specific embodiments are only several preferred embodiments of the present utility model. Based on the technical solution of the present utility model and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A one-way light-shielding lens, comprising a lens body (11), characterized in that: The lens body (11) is fixed in a protective outer frame (1), an extension frame (2) is fixed on the rear side of the protective outer frame (1), a group of shading lenses (41) are arranged in the extension frame (2), and different optical films are arranged on different shading lenses (41), mounting grooves (3) are equidistantly arranged at the bottom of the extension frame (2), a rotating frame (4) is rotatably connected in the mounting groove (3), the shading lenses (41) are fixed in the rotating frame (4), and a fixing component (5) is arranged on the outside of the extension frame (2) and at the connection with the outer wall of the rotating frame (4).

2. The one-way shading lens according to claim 1, characterized in that: The fixing assembly (5) comprises a fixing plate (51) and a telescopic plate (52); the fixing plate (51) is fixed to the outside of the extension frame (2); the telescopic plate (52) is slidably connected to the outside of the extension frame (2) and aligned with the fixing plate (51); a threaded rod (53) is rotatably connected to the fixing plate (51); an end of the threaded rod (53) is threadedly connected to the inside of the telescopic plate (52).

3. The one-way shading lens according to claim 2, characterized in that: A group of guide rods (55) are fixed on the fixed plate (51), and the ends of the guide rods (55) are inserted into the telescopic plate (52) and are slidably connected to the telescopic plate (52).

4. The one-way shading lens according to claim 2, characterized in that: One end of the threaded rod (53) away from the telescopic plate (52) passes through the fixed plate (51) and is fixed with a knob (54).

5. The one-way shading lens according to claim 1, characterized in that: A central rotating shaft (31) is rotatably connected in the installation groove (3); the central rotating shaft (31) passes through the rotating frame (4) and is fixedly connected to the rotating frame (4).

6. The one-way shading lens according to claim 1, characterized in that: Sealing pads are fixed to the front and rear side walls of the rotating frame (4), and the lens body (11) and the light-shielding lens (41) in the extension frame (2) are located on the same straight line.

Images