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Multifunctional CPL polarizing and adjustable ND filter

A multi-functional, polarizing lens technology, applied in optics, optical components, filters for photography, etc., can solve the problems of troublesome carrying and storage, high cost, inconvenient operation, etc., to achieve easy carrying and storage, reduce product The effect of buying and saving money

Inactive Publication Date: 2013-08-14
ZHUHAI CHUANFU OPTICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the user wants to add these two functions to the camera, he must configure a CPL polarizer and an ND mirror, which cost a lot, and are very troublesome and inconvenient to carry and store. Moreover, these CPL polarizers and ND mirrors are separated by setting thread structures. Installed on the lens, when switching between the CPL polarizing function and the adjustable ND function, you must remove the CPL polarizer and then assemble the ND mirror, or remove the ND mirror and then assemble the CPL polarizer, which is very time-consuming and inconvenient to operate

Method used

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  • Multifunctional CPL polarizing and adjustable ND filter
  • Multifunctional CPL polarizing and adjustable ND filter
  • Multifunctional CPL polarizing and adjustable ND filter

Examples

Experimental program
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Embodiment 1

[0022] Such as Figure 1 to Figure 4 Shown in, a kind of multifunctional CPL polarized light described in Embodiment 1 of the present invention, adjustable ND filter includes a ring-shaped rear mirror frame 1, a CPL polarized light filter 2 and an ND filter 3; the CPL polarized light filter 2 It is arranged in the ring of the rear mirror frame 1, and is rotatably connected with the inner side wall of the rear mirror frame 1; the clamping slot structure at one end of the ND filter 3 is detachably connected with the rear mirror frame 1 in a rotationally adjustable manner, and is located at the CPL polarization Mirror 2 front. The specific structure can be:

[0023] The CPL polarizer 2 is mainly composed of a rotating frame 21 and a CPL polarizer 22; wherein, the CPL polarizing sheet 22 is arranged in the rotating frame 21 and fixed by a spinning ring 221; the outer side wall of the rotating frame 21 is provided with There is a rotating convex rib 211, and the inner side wall o...

Embodiment 2

[0029] Such as Figure 5 Shown in, the structure of a kind of multifunctional CPL polarized light described in the second embodiment of the present invention, the adjustable ND filter is basically the same as that of the first embodiment, including a ring-shaped rear mirror frame 1, a CPL polarizer 2 and an ND filter 3. The CPL polarizer 2 is arranged in the ring of the rear mirror frame 1, and is rotatably connected with the inner side wall of the rear mirror frame 1; one end of the ND filter 3 is detachable and adjustable in rotation and with a block slot structure. The rear mirror frame 1 is connected and located in front of the CPL polarizer 2 . The only difference is that the outer side wall of the rear mirror frame 1 is provided with the same locking part as that of the first embodiment, that is, the locking screw 313, and the corresponding position of the outer side wall of the ND filter 3 is provided with a limit slide groove; , the locking part (that is, the end of t...

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Abstract

The invention relates to a multifunctional CPL polarizing and adjustable ND filter, comprising a ring-shaped rear filter frame, a CPL polariscope and an ND filter, wherein the CPL polariscope is arranged in the ring shape of the rear filter frame, and is rotationally connected with the side wall of the inner side of the rear filter frame; and one end of the ND filter is in a clamping block and clamping slot structure and is detachably, rotationally and adjustably connected with the rear filter frame, and is positioned in front of the CPL polariscope. In such a way, the requirement of a user for a CPL polarizing function and an adjustable ND function can be met after the user purchases one multifunctional CPL polarizing and adjustable ND filter disclosed by the invention, the repeated product purchase is avoided, the expenditure is greatly saved, the carrying and the storing are easy and convenient, the switching between the CPL polarizing function and the adjustable ND function can be realized only through disassembling and assembling the ND filter, and the operation is very simple, convenient and fast.

Description

technical field [0001] The invention relates to the technical field of camera filter adjustment, in particular to a multifunctional CPL polarizing and adjustable ND filter. Background technique [0002] At present, CPL polarizers and ND mirrors (neutral density filters) are commonly used filters on SLR cameras; among them, CPL polarizers mainly function as CPL polarizers to weaken reflected light, and are often used to filter out reflected light from glass windows. It makes the glass more clear and transparent, and it is also used to filter out the polarized light in the sky, making the contrast between the sky clearer and more real; ND mirrors are mainly used to reduce the amount of light passing through, shooting outdoors in strong sunlight, or in normal light When using a longer exposure time under certain conditions, it is necessary to use an ND mirror to assist. If the user wants to add these two functions to the camera, he must configure a CPL polarizer and an ND mirr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/00G03B11/04G03B17/14
CPCG02B27/281G02B5/003G02B7/006G03B11/00G03B17/565
Inventor 袁国奎
Owner ZHUHAI CHUANFU OPTICAL TECH
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