CN201233495Y - Telescopic shading cover for camera lens - Google Patents
Telescopic shading cover for camera lens Download PDFInfo
- Publication number
- CN201233495Y CN201233495Y CNU2008200516640U CN200820051664U CN201233495Y CN 201233495 Y CN201233495 Y CN 201233495Y CN U2008200516640 U CNU2008200516640 U CN U2008200516640U CN 200820051664 U CN200820051664 U CN 200820051664U CN 201233495 Y CN201233495 Y CN 201233495Y
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- CN
- China
- Prior art keywords
- cylindrical shell
- camera lens
- light shield
- projecting ring
- internal projecting
- Prior art date
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Abstract
The utility model relates to a telescopic lens shade of a camera lens. The telescopic lens shade aims to solve the problems of larger size, inconvenient carrying, more complicated structure, higher price, only cylindrical lens shade, and the like of the prior telescopic lens shade. The key points of the technical proposal are as follows: the telescopic lens shade is characterized in that the telescopic lens shade consists of three or more cylinder bodies which are mutually sleeved together and mutually matched by sliding, and the back end cylinder mouth of the cylinder body which is positioned in the innermost position is a card matching port or a thread port which is connected with the camera lens.
Description
Technical field
The utility model belongs to photographic goods, specifically is meant a kind of telescopic light shield that can be equipped on existing camera lens front.
Background technology
During camera, because the various veiling glares beyond the camera lens visual angle can cause camera imaging quality and color rendition variation, in order to reduce or eliminate the interference of these veiling glares, guarantee and the raising shooting effect, existing camera is often attached is furnished with lens hood, be used to be installed in the camera lens front and block camera lens visual angle various veiling glares in addition, therefore lens hood becomes the photographic accessory a kind of commonly used of supporting existing camera.The lens hood that generally uses is the screening tube of a regular length at present, and its rear end nozzle is that a card that connects camera lens is joined mouth or screw thread mouth.When making camera lens be in maximum visual angle, the unlikely part that shelters from the camera lens angular field of view of the inboard peristoma of the front end nozzle of light shield, the length of light shield and front end nozzle bore all are to design by the maximum visual angle of camera lens.But when the adjustment lens focus diminished the camera lens visual angle, because the length and the front end nozzle bore of light shield are all fixed, at this moment the veiling glare beyond the camera lens visual angle yet can enter camera lens, causes the shooting quality variation.For this reason, Chinese patent provides a kind of digital locate mode zoom lens light shield for No. 87213163, adopt the scalable light shield of two cylindrical section screw connection structures, come to adapt by the length that changes light shield with the camera lens visual angle change, light shield length is the most in short-term corresponding to camera lens visual angle maximum, when light shield length is the longest corresponding to camera lens visual angle minimum.But this camera lens with light shield exist volume big, carry that inconvenience, structure are complicated, price is higher, also having the light shield shape can only be cylindrical shape, is subjected to certain limitation in the moulding.
Summary of the invention
For solve existing telescopic camera lens with light shield exist volume big, carry that inconvenience, structure are complicated, price is higher, the light shield shape can only be defectives such as cylindrical shape, the purpose of this utility model provides a kind of telescopic light shield of improved camera lens, can overcome the defective of prior art.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of telescopic light shield of camera lens, it is characterized in that: be made up of the cylindrical shell that is set-located each other more than three or three and do to be slidingly matched mutually, the rear end nozzle that is in the cylindrical shell of inner side is that a card that connects camera lens is joined mouthful or screw thread mouth.
The what is called of technique scheme be set-located each other be meant a cylindrical shell can be successively with another barrel jacket in its cylindrical shell, but can not break away from each other.The concrete structure that can break away from each other can not be: the cylindrical shell that is in outer fix is provided with internal projecting ring or interior projection, the cylindrical shell that is in inner side is provided with outer bulge loop or outer projection, internal projecting ring or interior projection stop cooperation mutually with outer shroud or outer projection, make cylindrical shell that is in inner side and the cylindrical shell that is in outer fix can not break away from each other at mutual sliding process.
The shape of cross section of all cylindrical shells of technique scheme all can be got circle, square or rectangle.
The beneficial effects of the utility model: because light shield is made up of the cylindrical shell that is set-located each other more than three or three and do to be slidingly matched mutually, so the light shield volume can shrink quite for a short time, carry more convenient; Owing to adopt the sheathed sliding extension structure of cylindrical shell each other, make that the light shield structure is comparatively simple, cost is lower, and the light shield shape is not limited to cylindrical shape, can not limited in the moulding.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the schematic perspective view of a kind of embodiment of the utility model.
Fig. 2 is that the A-A of Fig. 1 analyses and observe enlarged diagram.
Fig. 3 is the schematic perspective view of Fig. 1 backsight state.
Fig. 4 is the schematic perspective view of Fig. 1 when being retracted to minimum volume.
Fig. 5 is that Fig. 1 is installed in the synoptic diagram on the camera.
Fig. 6 is the synoptic diagram that Fig. 5 light shield shortens.
Fig. 7 is that Fig. 5 light shield contracts to the shortest synoptic diagram.
Fig. 8 is the synoptic diagram that the light shield of Fig. 7 is turned around installation.
1,2 and 3, cylindrical shell among the figure:; 4, rear end nozzle; 5, internal projecting ring; 6, interior projection; 7, outer bulge loop; 8, internal projecting ring; 9, interior projection; 10, outer bulge loop; 11, light shield; 12, camera; 13, camera lens.
Embodiment
With reference to Fig. 1～Fig. 4, the telescopic light shield of this camera lens, it is characterized in that: be set-located each other and be slidingly matched mutually by three cylindrical shells 1,2,3 and form, the rear end nozzle 4 that is in the cylindrical shell 3 of inner side is that a card that connects camera lens is joined mouth.In addition, the cylindrical shell 1 that is in outermost locations is provided with internal projecting ring 5 and interior projection 6 etc., and the cylindrical shell 2 that is in time outer fix is provided with outer bulge loop 7, and described internal projecting ring 5 and interior projection 6 are equal to described outer bulge loop 7 and stop cooperation mutually; Be on the cylindrical shell 2 of time outer fix and also be provided with internal projecting ring 8 and interior projection 9 etc., the cylindrical shell 3 that is in inner side is provided with outer bulge loop 10, and described internal projecting ring 8 and interior projection 9 are equal to described outer bulge loop 10 and stop cooperation mutually; Thereby make cylindrical shell 1,2,3 can not break away from each other at mutual sliding process.The shape of cross section of cylindrical shell 1,2,3 all is square.
During use, light shield 11 is installed in camera lens 13 the place aheads of camera 12, during installation rear end nozzle 4 cards of light shield 11 is joined on the draw-in groove that is fixed on camera lens 13 outsides with regard to shown in Figure 3.After camera 12 is adjusted focal length facing to scenery to be clapped, the cylindrical shell 1 or 2 that pulls on the light shield 11 makes light shield 11 flexible, seeing from view finder that cylindrical shell 1 front end inner edge is flexible gets final product to the edge that just is in the camera lens angular field of view, at this moment neither can allow the outer veiling glare of camera lens angular field of view enter camera lens 13, light shield 11 can not block in the camera lens angular field of view again.When not using light shield 11 or not using camera 12, light shield 11 can be turned around as shown in Figure 8 and be installed on the camera lens 12, to avoid taking camera lens 12 anterior position of camera 12.
Claims (4)
1, a kind of telescopic light shield of camera lens, it is characterized in that: be made up of the cylindrical shell that is set-located each other more than three or three and do to be slidingly matched mutually, the rear end nozzle that is in the cylindrical shell of inner side is that a card that connects camera lens is joined mouthful or screw thread mouth.
2, press the telescopic light shield of the described camera lens of claim 1, it is characterized in that the described cylindrical shell that is in outer fix is provided with internal projecting ring or interior projection, the cylindrical shell that is in inner side is provided with outer bulge loop or outer projection, and internal projecting ring or interior projection stop cooperation mutually with outer shroud or outer projection.
3, press the telescopic light shield of the described camera lens of claim 2, it is characterized in that described cylindrical shell is three, the cylindrical shell that is in outermost locations is provided with internal projecting ring and interior projection, the cylindrical shell that is in time outer fix is provided with outer bulge loop, described internal projecting ring and interior projection stop cooperation mutually with described outer bulge loop, be on the cylindrical shell of time outer fix and also be provided with internal projecting ring and interior projection, the cylindrical shell that is in inner side is provided with outer bulge loop, and described internal projecting ring and interior projection stop cooperation mutually with described outer bulge loop.
4, by the telescopic light shield of claim 1,2 or 3 described camera lenss, it is characterized in that the shape of cross section of described cylindrical shell is got circle, square or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200516640U CN201233495Y (en) | 2008-07-30 | 2008-07-30 | Telescopic shading cover for camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200516640U CN201233495Y (en) | 2008-07-30 | 2008-07-30 | Telescopic shading cover for camera lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201233495Y true CN201233495Y (en) | 2009-05-06 |
Family
ID=40619876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200516640U Expired - Fee Related CN201233495Y (en) | 2008-07-30 | 2008-07-30 | Telescopic shading cover for camera lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201233495Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375453A (en) * | 2018-11-20 | 2019-02-22 | 中国航发贵州黎阳航空动力有限公司 | A kind of image collecting device for eliminating the reflective anti-shadow of subject |
| CN109471314A (en) * | 2019-01-14 | 2019-03-15 | 上海我映文化传播有限公司 | It is a kind of for generate picture meaning visual effect optical module |
| CN109581644A (en) * | 2018-11-20 | 2019-04-05 | 中国航发贵州黎阳航空动力有限公司 | One kind being used for the microscopical light filming apparatus of three-dimensional digital |
| CN114488665A (en) * | 2022-02-24 | 2022-05-13 | 长沙创荣电子科技有限公司 | Reflection preventing device for projection screen |
-
2008
- 2008-07-30 CN CNU2008200516640U patent/CN201233495Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375453A (en) * | 2018-11-20 | 2019-02-22 | 中国航发贵州黎阳航空动力有限公司 | A kind of image collecting device for eliminating the reflective anti-shadow of subject |
| CN109581644A (en) * | 2018-11-20 | 2019-04-05 | 中国航发贵州黎阳航空动力有限公司 | One kind being used for the microscopical light filming apparatus of three-dimensional digital |
| CN109471314A (en) * | 2019-01-14 | 2019-03-15 | 上海我映文化传播有限公司 | It is a kind of for generate picture meaning visual effect optical module |
| CN114488665A (en) * | 2022-02-24 | 2022-05-13 | 长沙创荣电子科技有限公司 | Reflection preventing device for projection screen |
| CN114488665B (en) * | 2022-02-24 | 2024-03-22 | 长沙创荣电子科技有限公司 | Reflection preventing device for projection screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20120730 |