Light attenuation device and light attenuation assembly

Abstract

A light attenuation device and a light attenuation assembly using same. The light attenuation device comprises: a fixing member (100), formed with a light transmitting hole; an electronic neutral density filter (200), arranged in the fixing member (100) and configured to reduce the amount of light passing through the light transmitting hole; and a control device, mounted on the fixing member (100) and electrically connected to the electronic neutral density filter (200) so as to adjust the light transmittance of the electronic neutral density filter (200). The light attenuation device uses the electronic neutral density filter (200), and the electronic neutral density filter (200) adjusts the light transmittance thereof by changing the phase of liquid crystals in glass by means of a voltage, so that the problem of color cast can be improved.

Description

Light reduction device and light reduction assembly TECHNICAL FIELD

[0001] The present application relates to the technical field of light reduction lenses, and particularly relates to a light reduction device and a light reduction assembly. BACKGROUND

[0002] The light reduction device is a filter device used for outdoor shooting, which functions to reduce the amount of light entering the camera. The light reduction device is divided into a single-piece light reduction device and an adjustable light reduction device.

[0003] However, when the single-piece light reduction device is used to adjust the amount of light, multiple lenses with different light transmittances need to be prepared to correspond to different shooting scenes, so the portability is poor. When the adjustable light reduction device is used, since the adjustable light reduction device uses two stacked polarizing mirrors, color cast problems exist.

[0004] SUMMARY

[0005] The main purpose of the present application is to provide a light reduction device, which aims to solve the problems of poor portability and color cast of the prior art light reduction device.

[0006] To achieve the above purpose, one aspect of the present application provides a light reduction device, comprising:

[0007] A fixing member, wherein the fixing member is formed with a light transmission hole;

[0008] An electronic light reduction lens, wherein the electronic light reduction lens is arranged in the fixing member and is used to reduce the amount of light passing through the light transmission hole;

[0009] A control device, wherein the control device is installed on the fixing member and is electrically connected to the electronic light reduction lens to adjust the light transmission amount of the electronic light reduction lens.

[0010] In some embodiments, the control device comprises a controller and a wireless receiving member, the controller is installed on the fixing member and is electrically connected to the wireless receiving member and the electronic light reduction lens respectively, the wireless receiving member is used to receive a wireless control signal and feed back to the controller, and the controller is used to adjust the light transmission amount of the electronic light reduction lens according to the wireless control signal.

[0011] In some embodiments, the wireless receiving member is installed on the side of the fixing member and at least partially protrudes out of the fixing member.

[0012] In some embodiments, the control device further comprises a manual control member, the manual control member is electrically connected to the controller, and the controller is further used to adjust the light transmission amount of the electronic light reduction lens according to the signal fed back by the manual control member.

[0013] In some embodiments, the manual control member is a wave knob installed on the side of the fixing member.

[0014] In some embodiments, the light reduction device further comprises a display screen mounted on the side of the fixing member and electrically connected to the control device for displaying the light transmittance of the electronic light reduction lens under the control of the control device;

[0015] Furthermore, the side of the fixing member is further provided with a power supply interface electrically connected to the control device for cooperating with a power supply data line independent of the light reduction device to supply power to the control device.

[0016] In some embodiments, the fixing member comprises two interconnected frame bodies, and a first hollow inner hole is formed through each of the two frame bodies, and the first hollow inner holes of the two frame bodies are coaxially arranged and constitute the light transmission hole.

[0017] The control device comprises a circuit board clamped between the two frame bodies, and a mounting hole is formed in the circuit board, and the electronic light reduction lens is mounted in the mounting hole.

[0018] In another aspect of the present application, a light reduction assembly is provided for being detachably mounted at one axial end of a camera, which comprises:

[0019] The light reduction device as described above;

[0020] An adapter ring formed with a second hollow inner hole, and a slot in communication with the second hollow inner hole is formed in the peripheral side of the adapter ring, and a connecting member for connecting with the camera is arranged on one axial side of the adapter ring;

[0021] The light reduction device is mounted in the second hollow inner hole through the slot.

[0022] In some embodiments, a handle is protruded from the side of the fixing member and exposed outside the slot for being held by a hand to insert and pull out the light reduction device from the slot; and / or

[0023] An elastic positioning member is arranged on one of the side of the fixing member and the inner peripheral wall of the adapter ring, and a positioning hole is arranged on the other one, and the elastic positioning member and the positioning hole are cooperated to position the adapter ring and the light reduction device relative to each other.

[0024] In some embodiments, a dustproof gasket is arranged on each of the axial end faces of the fixing member outside the periphery of the light transmission hole, and the slot has two slot side walls oppositely arranged, and the dustproof gaskets on the axial end faces of the fixing member are respectively abutted with the two slot side walls to seal the cooperation gaps between the axial end faces of the fixing member and the two slot side walls.

[0025] Compared with the prior art light reduction device, the light reduction device of the present application adopts an electronic light reduction lens, and since the electronic light reduction lens adjusts the light transmittance by changing the phase of liquid crystal in the glass through voltage, the color cast problem can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a structural schematic diagram of a light reducing device according to an embodiment of the present application;

[0027] Fig. 2 is an exploded view of the light reducing device in Fig. 1;

[0028] Fig. 3 is a structural schematic diagram of an adapter ring according to an embodiment of the present application;

[0029] Fig. 4 is a structural schematic diagram of a light reducing assembly according to an embodiment of the present application.

[0030] Explanation of reference numerals:

[0031] Fixing member 100; frame 110; first hollow inner hole 111; handle portion 120; elastic positioning member 130; electronic light reducing mirror 200; controller 310; wireless receiving member 320; manual control member 330; circuit board 340; mounting hole 341; display screen 400; power supply interface 500; adapter ring 600; second hollow inner hole 610; insertion slot 620; dustproof gasket 700.

[0032] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0033] The solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0034] It should be noted that all directional indications, such as upper, lower, left, right, front, back, top, bottom, side, etc., are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0035] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or can have a middle element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or can have a middle element.

[0036] In addition, the description of "first", "second", etc. in the embodiments of the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features.

[0037] In view of the technical defects in the prior art, the embodiment provides a light reducing device. As shown in FIG. 1, the light reducing device of the embodiment comprises a fixing member 100, an electronic dimmer 200 and a control device. The fixing member 100 is used to form the main body of the whole light reducing device, and is used to mount the electronic dimmer 200 and the control device. Specifically, the fixing member 100 is formed with a light-transmitting hole, and the electronic dimmer 200 is arranged in the fixing member 100. The electronic dimmer 200 arranged in the fixing member 100 is exposed to the fixing member 100 through the light-transmitting hole, so that the electronic dimmer 200 can reduce the amount of light passing through the light-transmitting hole, thereby making the light reducing device of the embodiment play a light reducing role.

[0038] The control device is electrically connected with the electronic dimmer 200 for adjusting the light transmission of the electronic dimmer 200. The electronic dimmer 200 has a first substrate and a second substrate stacked, and a first conductive layer and a second conductive layer are formed on the opposite surfaces of the first substrate and the second substrate. The first conductive layer and the second conductive layer are electrically connected with a first signal end and a second signal end respectively, are sealed by a frame glue at the periphery of the first substrate and the second substrate, and are filled with liquid crystal in the gap between the first substrate and the second substrate.

[0039] The first signal end and the second signal end are electrically connected with the control device, so that the user can adjust the phase of the liquid crystal through the control device, so as to control the light transmission of the electronic dimmer 200. Specifically, the control device can generate a driving signal corresponding to a certain light transmission, and the driving signal is transmitted to the first conductive layer and the second conductive layer to generate an electric field between the two, so that the liquid crystal filled in the liquid crystal panel changes the arrangement mode of the liquid crystal molecules under the influence of the electric field, so as to change the light transmission of the electronic dimmer 200, and achieve the effect of adjusting the light reduction value.

[0040] Compared with the light reducing device of the prior art, the light reducing device of the embodiment adopts the electronic dimmer 200, and the light transmission of the electronic dimmer 200 is adjusted by changing the phase of the liquid crystal in the glass through voltage, so that the color deviation problem can be improved.

[0041] Further, as shown in FIG. 1 and FIG. 2, in order to realize the wireless control of the light transmittance of the electronic dimmer 200, the control device comprises a controller 310 and a wireless receiving device 320. The controller 310 is installed on the fixed member 100 and electrically connected with the wireless receiving device 320 and the electronic dimmer 200 respectively. The wireless receiving device 320 is installed on the side of the fixed member 100 and at least partially exposed outside the fixed member 100. Preferably, the wireless receiving device 320 is a radio frequency antenna installed on the side of the fixed member 100, and the wireless receiving device 320 can receive the wireless control signal transmitted by the user's control terminal (such as a smart phone, a remote controller, a tablet computer, etc.). The wireless receiving device 320 is used to receive the wireless control signal and feedback to the controller 310. When the controller 310 receives the wireless control signal, a corresponding driving signal is generated to control the light transmittance of the electronic dimmer 200, thereby realizing the purpose of remotely controlling the electronic dimmer 200.

[0042] Further, as shown in FIG. 1 and FIG. 2, in order to also realize the manual control of the light transmittance of the electronic dimmer 200, the control device further comprises a manual control member 330. The manual control member 330 is installed on the side of the fixed member 100 and electrically connected with the controller 310, and the controller 310 is also used to adjust the light transmittance of the electronic dimmer 200 according to the signal feedback by the manual control member 330. Preferably, the manual control member 330 is a wave knob installed on the side of the fixed member 100. The wave knob is electrically connected with the controller 310 through a variable resistor, and by rotating the wave knob, the resistance change of the variable resistor can be adjusted, so that the driving voltage generated by the controller 310 can be adjusted, thereby adjusting the phase of the liquid crystal, so as to control the light transmittance of the electronic dimmer 200.

[0043] Further, in order to more intuitively observe the light transmittance of the electronic dimmer 200, as shown in FIG. 1, the dimming device further comprises a display screen 400. The display screen 400 is installed on the side of the fixed member 100 and electrically connected with the control device. When the control device generates a driving signal for controlling the electronic dimmer 200, it also generates a display signal corresponding to the driving signal and transmits the display signal to the display screen 400, so that the display screen 400 displays the current light transmittance of the electronic dimmer 200. Further, the side of the fixed member 100 is also provided with a power supply interface 500, which is electrically connected with the control device and used to cooperate with the power supply data line independent of the dimming device to supply power to the control device. The power supply interface 500 is preferably a Type-C socket, but is not limited thereto.

[0044] Further, as shown in FIG. 2, the fixing member 100 comprises two mutually connected frame bodies 110, and a first hollow inner hole 111 is arranged through each of the two frame bodies 110, and the first hollow inner holes 111 of the two frame bodies 110 are coaxially arranged and constitute a light transmission hole. The controller further comprises a circuit board 340, the circuit board 340 is clamped between the two frame bodies 110, and the controller 310 is arranged on the circuit board 340. The circuit board 340 is provided with a mounting hole 341, and the electronic dimmer 200 is mounted in the mounting hole 341.

[0045] In another embodiment, a light reduction assembly is provided. The light reduction assembly is detachably mounted at one axial end of a camera lens, so as to adjust the light amount of the camera lens, thereby improving the shooting effect of the camera. The light reduction assembly of the present embodiment comprises the light reduction device provided in the above embodiment and an adapter ring 600 used in cooperation with the light reduction device.

[0046] As shown in FIG. 3, the adapter ring 600 is formed with a second hollow inner hole 610, and a slot 620 in communication with the second hollow inner hole 610 is arranged on the peripheral side of the adapter ring 600. A connecting member for connecting with a camera lens is arranged on one axial side of the adapter ring 600. Optionally, the connecting member can be a threaded connection part or a magnetic connection part, but is not limited thereto. As shown in FIG. 4, the light reduction device is mounted in the second hollow inner hole 610 through the slot 620, so that the light reduction device and the adapter ring 600 combine to form a light reduction assembly. When the light reduction assembly of the present embodiment is connected to the camera lens, the light reduction device can reduce the light amount passing through the second hollow inner hole 610, thereby reducing the light amount of the camera lens, so as to improve the shooting effect of the camera.

[0047] Further, as shown in FIG. 4, a handle part 120 is protruded on the side of the fixing member 100 of the light reduction device. The handle part 120 protrudes out of the slot 620, so as to hold the light reduction device by hand, thereby inserting or pulling out the light reduction device from the slot 620 of the adapter ring 600.

[0048] Further, as shown in FIG. 2, in order to improve the connection stability between the light reduction device and the adapter ring 600, an elastic positioning member 130 is arranged on the side of the fixing member 100, and a positioning hole is arranged on the inner peripheral wall of the adapter ring 600, and the elastic positioning member 130 and the positioning hole are matched with each other, so as to position the adapter ring 600 and the light reduction device relative to each other. Of course, the elastic positioning member 130 can also be arranged on the inner peripheral wall of the adapter ring 600, and the positioning hole is arranged on the side of the fixing member 100. Optionally, the elastic positioning member 130 of the present embodiment can adopt a ball head column race, but is not limited thereto.

[0049] Further, as shown in FIG. 1, the axial two end faces of the fixing member 100 are respectively provided with dustproof pads 700 located outside the periphery of the light-transmitting hole, and the insertion slot 620 has two slot side walls oppositely arranged at intervals. The dustproof pads 700 on the axial two end faces of the fixing member 100 respectively abut against the two slot side walls to seal the fitting gaps between the axial two end faces of the fixing member 100 and the two slot side walls, thereby preventing the entry of dust.

[0050] The above description is only some or preferred embodiments of the present application, and neither the text nor the drawings can limit the scope of protection of the present application. Any equivalent structural transformation using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the present application.

Claims

1. A light reducing device, characterized in that The application relates to a light-reducing device, which comprises: a fixing member provided with a light-transmitting hole; an electronic light-reducing mirror arranged in the fixing member and used for reducing the amount of light passing through the light-transmitting hole; a control device mounted on the fixing member and electrically connected with the electronic light-reducing mirror and used for adjusting the light-transmitting amount of the electronic light-reducing mirror.

2. The light reducing device according to claim 1, characterized in that The control device comprises a controller mounted on the fixing member and electrically connected with a wireless receiving device and the electronic light-reducing mirror respectively, the wireless receiving device is used for receiving a wireless control signal and feeding back to the controller, and the controller is used for adjusting the light-transmitting amount of the electronic light-reducing mirror according to the wireless control signal.

3. The light reducing device according to claim 2, characterized in that The wireless receiving device is mounted on the side of the fixing member and at least partially exposed outside the fixing member.

4. The light reducing device according to claim 2, characterized in that The control device further comprises a manual control member electrically connected with the controller, and the controller is further used for adjusting the light-transmitting amount of the electronic light-reducing mirror according to the signal fed back by the manual control member.

5. The light reducing device according to claim 4, characterized in that The manual control member is a wave knob mounted on the side of the fixing member.

6. The light reducing device according to any one of claims 1 to 5, characterized in that, The light-reducing device further comprises a display screen mounted on the side of the fixing member and electrically connected with the control device and used for displaying the light-transmitting degree of the electronic light-reducing mirror under the control of the control device. Furthermore, the side of the fixing member is further provided with a power supply interface electrically connected with the control device and used for cooperating with a power supply data line independent of the light-reducing device to supply power to the control device.

7. The light reducing device according to claim 6, characterized in that The fixing member comprises two mutually connected frame bodies, first hollow inner holes are respectively arranged in the two frame bodies, the first hollow inner holes of the two frame bodies are coaxially arranged and constitute the light-transmitting hole. The control device comprises a circuit board clamped between the two frame bodies. Mounting holes are arranged on the circuit board, and the electronic light-reducing mirror is mounted in the mounting holes.

8. A light reduction assembly for detachable mounting to an axial end of a camera, the light reduction assembly comprising: The application relates to a light-reducing device, which comprises: the light-reducing device according to any one of claims 1 to 7; an adapter ring provided with a second hollow inner hole, a slot communicated with the second hollow inner hole is arranged on the circumferential side of the adapter ring, and a connecting member used for connecting with a camera lens is arranged on the side of the adapter ring in the axial direction; wherein the light-reducing device is mounted in the second hollow inner hole through the slot.

9. A light reducing assembly according to claim 8, characterized in that A handle portion is protruded on the side of the fixing member and exposed outside the slot, so as to be held by a hand to insert or pull out the light-reducing device in the slot; and / or elastic positioning members are arranged on one of the side of the fixing member and the inner circumferential wall of the adapter ring, and positioning holes are arranged on the other one, the elastic positioning members and the positioning holes are matched with each other, so as to position the adapter ring and the light-reducing device relative to each other.

10. The light reducing assembly of claim 8, wherein, Dustproof gaskets are arranged on the axial two end faces of the fixing member and located outside the periphery of the light-transmitting hole, the slot has two groove side walls oppositely arranged at intervals, and the dustproof gaskets on the axial two end faces of the fixing member are respectively abutted with the two groove side walls, so as to seal the cooperation gaps between the axial two end faces of the fixing member and the two groove side walls.

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