Lens hood location device
The technology of a positioning device and a shading cover is applied to optical and photographic filters, televisions, etc., which can solve problems such as wear and tear, easy loss of elasticity of the abutment ring 52, and increased inconvenience, so as to improve the service life and use Effect of long life and low cost of use
Inactive Publication Date: 2009-11-25
DONELL OPTRONICS CO LTD
View PDF0 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] When the existing hood 50 is in use, the sleeve 51 is movably positioned on the lens 40 mainly through the abutment ring 52 rubbing against the inner surface 511 of the sleeve 51. However, due to the sleeve The inner surface 511 of the barrel 51 has the same thickness, so the abutment ring 52 is compressed between the inner surface 511 of the sleeve 51 and the lens 40, so the abutment ring 52 will not only lose its elasticity but also be damaged after long-term use. , and then the situation that the sleeve 51 cannot be firmly positioned on the lens 40 occurs, so the abutment ring 52 often needs to be replaced after a period of use, which is relatively inconvenient to use and increases the required cost. There is indeed room for improvement. place
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] In order to understand the technical features and practical effects of the present invention in detail, and to implement them according to the contents of the description, the preferred embodiment shown in the accompanying drawings will be described in detail below, please refer to the following Figure 1 to Figure 3 As shown, the sunshade positioning device of the present invention includes a sunshade 10 and an abutment ring 20, wherein:
[0028] The light shield 10 is a hollow cylinder, which is movably sleeved on the outside of a lens 30. The inner surface of the light shield 10 is concavely provided with at least one accommodating groove 12. Preferably, the light shield 10 is placed on the The inner surface is provided with an annular and parallel accommodation groove 12 near the front and rear ends. In addition, the light shield 10 is provided with a slide groove 11 between the two accommodation grooves 12. Preferably, the light shield 10 is placed in the The outer...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a lens hood location device which is sleeved on a lens and comprises a lens hood and a supporting ring, wherein the lens hood is a hollow cylinder and can be movably sleeved outside the lens; at least one accommodating groove is arranged on the inner surface of the lens hood in a concave way; the supporting ring is fixedly arranged on the outer surface of the lens and clings to the inner surface of the lens hood; when the lens hood moves relative to the lens to enable the supporting ring to move into one of the accommodating groove, a space for the supporting ring to restore can be provided, thereby effectively preventing the supporting ring losing the elasticity caused by the condition that the supporting ring is compressed between the inner surface of the lens hood and the lens for a long time, greatly prolonging the service life of the supporting ring and providing the lens hood location device which is firm in location and can lower the use cost.
Description
technical field [0001] The invention relates to a positioning device, in particular to a positioning device for a light shield, which belongs to the technical field of camera equipment. Background technique [0002] Generally, in order to avoid the impact of external light sources on the image, it will be as follows Figure 6 As shown, a movable hood 50 is installed outside the lens 40, thereby providing the effect of shielding the external light source for the lens 40, wherein the existing hood 50 is mainly composed of a hollow sleeve 51 arranged outside the lens 40 and a set of abutting ring 52 arranged on the lens 40 and abutting against the inner surface 511 of the sleeve 51; [0003] When the existing hood 50 is in use, the sleeve 51 is movably positioned on the lens 40 mainly through the abutment ring 52 rubbing against the inner surface 511 of the sleeve 51. However, due to the sleeve The inner surface 511 of the barrel 51 has the same thickness, so the abutment ring...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G03B11/04G03B17/02H04N5/225
Inventor 郑明忠
Owner DONELL OPTRONICS CO LTD