Polarizer switching device and photographing instrument

Abstract

The polaroid switching device comprises a camera lower supporting plate, a camera front mounting plate and a camera rear mounting plate, the camera front mounting plate and the camera rear mounting plate are mounted on the camera lower supporting plate, a through hole is formed in the center of the camera front mounting plate, and a through hole is formed in the center of the camera rear mounting plate. The front surface of the camera front mounting plate is rotatably provided with a polaroid mechanism, and the back of the camera front mounting plate is provided with a driving mechanism which is used for driving the polaroid mechanism to rotate so as to open or shield the through hole and switch the state of the polaroid mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of photographic imaging equipment, in particular to an externally mounted electrically controlled polarizing plate switching device installed in front of a camera and a photographic instrument. Background Art

[0002] Polarizing filters are optical components that convert natural light into polarized light. They can either block or transmit incident light, allowing either longitudinal or transverse light to pass through while blocking the other. In photographic equipment, polarizing filters are added to camera lenses to selectively block either longitudinal or transverse light, reducing reflected light and resulting in higher-definition photos.

[0003] However, facial photography devices on the market usually only add a polarizing film to the fill light of the lamp cavity to selectively block one type of light. However, after the various lights in the lamp cavity are diffusely reflected, the light received by the camera when taking pictures is no longer the polarized light that has been blocked. This phenomenon has some impact on the pursuit of high-quality photography.

[0004] Currently, facial camera systems on the market typically use white light, UV light, or polarized light to illuminate the lamp cavity, which meets normal photography requirements. However, as products mature and demand for photos becomes more stringent, new camera designs, inspired by the addition of filters to SLR cameras, have emerged. These devices incorporate a polarizing device in front of the camera lens to achieve higher-definition images.

[0005] A new polarizing filter device has emerged on the market. It attaches to the front of the camera. This compact device houses a very small and lightweight polarizing filter, which is controlled by electromagnetic attraction. However, due to its small size, the electromagnetic attraction is weak, making it suitable only for smaller lenses.

[0006] In pursuit of high-quality photos, the industry has adopted a technique similar to adding filters to SLR cameras, adding polarizing filters to the front of camera lenses. However, these polarizing filters utilize a compact design, and the electromagnetic force of the internal components is limited. They can only switch relatively small polarizing filters, and are currently only suitable for use on small camera lenses.

[0007] In pursuit of higher quality photos, cameras in photographic instruments have begun to incorporate SLR cameras into the instruments. In order to add polarized light to the SLR lens, the only suitable device currently available on the market is a filter device that is manually installed in front of the lens. However, this device that requires manual installation is not suitable for installation on photographic instruments. Utility Model Content

[0008] The main purpose of the utility model is to provide an external electric-controlled polarizing plate switching device and a camera installed in front of a camera, which aims to simply and conveniently control the switching of the polarizing plate, allowing the camera's photosensitive plate to filter out a certain type of light, reduce the reflected light on the surface of the face, and make the details of the face clearer.

[0009] To achieve the above-mentioned purpose, the utility model proposes a polarizer switching device, comprising: a camera lower support plate, a camera front mounting plate and a camera rear mounting plate installed on the camera lower support plate, a through hole being opened at the center position of the camera front mounting plate, a polarizer mechanism being rotatably provided on the front side of the camera front mounting plate, and a driving mechanism being provided on the back side of the camera front mounting plate for driving the polarizer mechanism to rotate so as to open or cover the through hole and switch the state of the polarizer mechanism.

[0010] A further technical solution of the present invention is that the polarizer mechanism includes a circular polarizer, a circular polarizer pressure plate and a circular polarizer fixing ring, the polarizer fixing ring fixes the polarizer on the polarizer pressure plate, the polarizer fixing ring is provided with a mounting ear, the outer side of the mounting ear is connected to the driving mechanism through a pin shaft, an arc-shaped motion groove is provided on the front mounting plate of the camera, the pin shaft is movably inserted into the arc-shaped motion groove, the middle part of the mounting ear is rotatably connected to the front mounting plate of the camera through a rotating shaft, when the driving mechanism drives the pin shaft to move in the arc-shaped motion groove, the polarizer fixing ring is driven to rotate around the rotating shaft, thereby opening or blocking the through hole.

[0011] A further technical solution of the present invention is that the driving mechanism includes an electric telescopic rod and a telescopic slider connected to the output end of the electric telescopic rod, a waist-shaped motion groove is provided at the bottom of the telescopic slider, and one end of the pin shaft extends into the waist-shaped motion groove.

[0012] A further technical solution of the present invention is that a rotating shaft hole is provided on the front mounting plate of the camera near the arc-shaped motion groove, the rotating shaft can be rotatably provided in the rotating shaft hole, and the middle part of the mounting ear is fixedly connected to the rotating shaft by a screw.

[0013] A further technical solution of the present invention is that a travel switch is provided in the electric telescopic rod.

[0014] To achieve the above-mentioned purpose, the present invention further provides a camera, which includes the polarizing plate switching device described above.

[0015] The beneficial effects of the polarizer switching device and camera of the utility model are:

[0016] The utility model, through the above technical solution, includes: a camera lower support plate, a camera front mounting plate and a camera rear mounting plate mounted on the camera lower support plate, a through hole being opened at the center position of the camera front mounting plate, a polarizing plate mechanism being rotatably provided on the front side of the camera front mounting plate, a driving mechanism being provided on the back side of the camera front mounting plate for driving the polarizing plate mechanism to rotate so as to open or block the through hole and switch the state of the polarizing plate mechanism, the utility model can be mounted in front of the camera, the state of the polarizing plate mechanism can be intelligently switched according to usage requirements, the polarizing plate mechanism is used when polarized light is needed, and is not used when polarized light is not needed, and the utility model can be suitable for being mounted in front of a large lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of the polarizer switching device of the utility model in a removed state;

[0019] Figure 2 This is a schematic structural diagram of another angle of the polarizer switching device of the utility model when it is in a removed state;

[0020] Figure 3 This is a schematic structural diagram of the polarizer switching device of the utility model in a shielded state;

[0021] Figure 4 This is a schematic structural diagram of another angle of the polarizer switching device of the utility model in the blocked state;

[0022] Figure 5 This is a cross-sectional view of the polarizer switching device of the utility model;

[0023] Figure 6 This is a cross-sectional view from another angle of the polarizer switching device of the present invention;

[0024] Figure 7 It is a structural diagram of the camera front mounting plate.

[0025] Description of Figure Numbers:

[0026] Camera lower support plate 1; camera front mounting plate 2; camera rear mounting plate 3; polarizer 4; polarizer pressure plate 5; polarizer fixing ring 6; pin 7; arc motion groove 8; rotation axis 9; electric telescopic rod 10; telescopic slider 11; waist-shaped motion groove 12; rotation axis hole 13; camera 14; bearing 15.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Please refer to Figures 1 to 7 The present invention proposes a polarizer switching device. A preferred embodiment of the polarizer switching device of the present invention includes a camera lower support plate 1, a camera front mounting plate 2 and a camera rear mounting plate 3 installed on the camera lower support plate 1, a through hole is opened at the center position of the camera front mounting plate 2, a polarizer mechanism is rotatably provided on the front side of the camera front mounting plate 2, and a driving mechanism is provided on the back side of the camera front mounting plate 2 for driving the polarizer mechanism to rotate so as to open or cover the through hole and switch the state of the polarizer mechanism.

[0030] In this embodiment, a camera 14 is provided on the camera lower support plate 1, and the polarization mechanism and the driving mechanism are provided in front of the camera 14. The polarizer mechanism moves under the drive of the driving mechanism and can switch between two usage states: a removed state and a blocked state.

[0031] like Figure 3 and Figure 4 As shown, when the polarizing film mechanism is needed, the driving mechanism drives the polarizing film mechanism to move to the blocking state, that is, blocks the through hole. In the blocking state, the polarizing film 4 in the polarizing film mechanism can be used to allow the camera 14 photosensitive film to filter out a type of light, thereby reducing the reflected light on the face surface and making the details of the face clearer. Figure 1 and Figure 2 As shown, when the polarizer mechanism is not needed and natural light needs to be used, the polarizer mechanism is driven by the driving mechanism to move to a removed state, that is, the through hole is opened.

[0032] Furthermore, in this embodiment, the polarizer mechanism includes a circular polarizer 4, a circular polarizer pressure plate 5 and a circular polarizer fixing ring 6, the polarizer fixing ring 6 fixes the polarizer 4 on the polarizer pressure plate 5, the polarizer fixing ring 6 is provided with a mounting ear, the outer side of the mounting ear is connected to the driving mechanism through a pin 7, an arc-shaped motion groove 8 is provided on the camera front mounting plate 2, the pin 7 is movably inserted into the arc-shaped motion groove 8, the middle part of the mounting ear is rotatably connected to the camera front mounting plate 2 through a rotating shaft 9, when the driving mechanism drives the pin 7 to move in the arc-shaped motion groove 8, it drives the polarizer fixing ring to rotate around the rotating shaft 9, thereby opening or blocking the through hole.

[0033] In this embodiment, the driving mechanism includes an electric telescopic rod 10 and a telescopic slider 11 connected to the output end of the electric telescopic rod 10. A waist-shaped motion groove 12 is provided at the bottom of the telescopic slider 11, and one end of the pin shaft 7 extends into the waist-shaped motion groove 12.

[0034] In this embodiment, a rotating shaft hole 13 is provided on the front mounting plate 2 of the camera near the arc-shaped motion groove 8, and a bearing 15 is provided in the rotating shaft hole 13. The rotating shaft 9 can be rotatably provided in the bearing 15, and the middle part of the mounting ear is fixedly connected to the rotating shaft 9 by a screw.

[0035] The following combination Figures 1 to 7 The structure and working principle of the polarizer switching device of the present invention are described in detail.

[0036] In this embodiment, the polarizer fixing ring 6 is fixed to the camera front mounting plate 2 through the rotating shaft 9 and screws, and a pin 7 is installed on the mounting ear at the side end of the polarizer fixing ring 6. The pin 7 is embedded in the waist-shaped motion groove 12 of the telescopic slider 11.

[0037] When the electric telescopic rod 10 is powered on, the electric telescopic rod 10 can pull and drive the movement of the telescopic slider 11, thereby driving the pin 7 inside the telescopic slider 11 to move together. In this way, by using the rotation axis 9 as the rotation fulcrum to control the movement of the pin 7, the left and right rotation of the polarizer fixing ring 6 can be controlled, thereby freely switching the polarized light according to the needs of taking pictures. Figure 3 and Figure 4 As shown, when the electric telescopic rod 10 is extended, the polarizer 4 is rotated to the front of the camera 14 and is in a blocking state, as shown in FIG. Figure 1 and Figure 2 As shown, when the electric telescopic rod 10 is in the retracted state, the polarizing plate 4 is rotated to the side of the camera 14 and is in a removed state.

[0038] In this embodiment, the power of the polarizer switching device comes from the thrust of the electric telescopic rod 10 shown, and the magnitude of this thrust can reach 10 to 200N. It can control the movement of a larger polarizer 4, and the single extension and contraction conversion movement can conveniently and simply control the switching movement of the polarizer 4.

[0039] In this embodiment, a travel switch is provided in the electric telescopic rod 10 .

[0040] The telescopic movement of the electric telescopic rod 10 is controlled by changing the positive and negative polarity of the voltage. In this embodiment, by providing the travel switch in the electric telescopic rod 10, the electric telescopic rod 10 can stop moving after reaching a certain size.

[0041] The beneficial effects of the polarizer switching device of the utility model are:

[0042] The utility model, through the above technical solution, includes: a camera lower support plate, a camera front mounting plate and a camera rear mounting plate mounted on the camera lower support plate, a through hole being opened at the center position of the camera front mounting plate, a polarizing plate mechanism being rotatably provided on the front side of the camera front mounting plate, a driving mechanism being provided on the back side of the camera front mounting plate for driving the polarizing plate mechanism to rotate so as to open or block the through hole and switch the state of the polarizing plate mechanism, the utility model can be mounted in front of the camera, the state of the polarizing plate mechanism can be intelligently switched according to usage requirements, the polarizing plate mechanism is used when polarized light is needed, and is not used when polarized light is not needed, and the utility model can be suitable for being mounted in front of a large lens.

[0043] To achieve the above-mentioned purpose, the present invention further proposes a camera, which includes the polarizing plate switching device as described above. The structure and working principle of the polarizing plate switching device have been described in detail above and will not be repeated here.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A polarizer switching device, characterized in that: include: A camera lower support plate, a camera front mounting plate and a camera rear mounting plate mounted on the camera lower support plate, wherein a through hole is provided at the center of the camera front mounting plate, a polarizer mechanism is rotatably provided on the front surface of the camera front mounting plate, and a drive mechanism is provided on the back surface of the camera front mounting plate for driving the polarizer mechanism to rotate, thereby opening or covering the through hole and switching the state of the polarizer mechanism; The polarizer mechanism includes a circular polarizer, a circular polarizer pressure plate, and a circular polarizer fixing ring. The polarizer fixing ring fixes the polarizer to the polarizer pressure plate. The polarizer fixing ring is provided with a mounting ear. The outer side of the mounting ear is connected to the driving mechanism via a pin. An arcuate motion groove is provided on the front mounting plate of the camera. The pin is movably inserted into the arcuate motion groove. The middle part of the mounting ear is rotatably connected to the front mounting plate of the camera via a rotating shaft. When the driving mechanism drives the pin to move in the arcuate motion groove, the polarizer fixing ring is driven to rotate around the rotating shaft, thereby opening or blocking the through hole. The driving mechanism includes an electric telescopic rod and a telescopic slider connected to the output end of the electric telescopic rod. A waist-shaped motion groove is provided at the bottom of the telescopic slider, and one end of the pin shaft extends into the waist-shaped motion groove.

2. The polarizer switching device according to claim 1, wherein: A rotation axis hole is provided on the camera front mounting plate near the arc-shaped motion groove. The rotation axis is rotatably provided in the rotation axis hole. The middle portion of the mounting ear is fixedly connected to the rotation axis via a screw.

3. The polarizer switching device according to claim 2, wherein: A travel switch is arranged in the electric telescopic rod.

4. A camera, characterized in that: The camera includes the polarizing plate switching device according to any one of claims 1 to 3.

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