Horizontal traffic privacy screen
A horizontal, anti-peep technology, applied in optics, instruments, optical components, etc., can solve the problems of inability to keep secret, small upper and lower security areas, etc., and achieve the effect of narrowing the left and right display range
Inactive Publication Date: 2011-12-14
张勇
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Problems solved by technology
[0004] In order to overcome the disadvantages of the existing anti-spy screens that have small privacy areas on the left, right, top and bottom, and cannot keep secrets in the front and back, the present invention provides a horizontally intersected anti-spy screen. The short-distance intersection of light rays indirectly realizes the narrowing of the left and right display ranges, and indirectly plays the left and right privacy functions
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[0018] exist figure 1 Among them, the opaque ultra-thin louvers with a thickness not exceeding 0.01mm are arranged horizontally with the ultra-thin louvers with a height (2) of 50mm and a pitch (1) of 5mm. Since the ratio of the height (2) 50mm of the ultra-thin louvers to the spacing (1) 5mm is 10 times, it can achieve the function of highly gathering the light between every two ultra-thin louvers, and every two ultra-thin louvers at 300mm in front of the display The louver visible range (3) is 30mm up and down. The visible range is very small and has a good anti-peeping effect. At the same time, it is 15mm larger than the diameter of the human eyeball, which does not affect a person's ability to see all the displayed content of the display.
[0019] exist figure 2 In the illustrated embodiment, the angles between each horizontally arranged ultra-thin louver and the display are different. That is, opaque ultra-thin louvers with a thickness of no more than 0.01 mm are arra...
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The utility model relates to a horizontal polyacrylic anti-peeping screen of a display. All the light from the display can meet at a certain level by horizontally arranged ultra-thin louvers at various angles to the display, by controlling the ratio of the height of the ultra-thin louvers to the distance between the ultra-thin louvers and the intersection of all light To control the upper and lower visible range of all light rays at the intersection of light rays, so that only in the upper and lower visible range of the horizontal intersection of light rays can the entire display content of the display be seen clearly, and in other places only the extremely visible range of the display can be seen clearly. A small part of the content, so as to achieve an effective privacy protection function. The horizontal anti-peeping screen can not only realize top-down privacy and front-back privacy, but also can reduce the left and right display range by controlling the short-distance intersection of all light rays, and indirectly play the function of left and right privacy protection.
Description
Technical field [0001] The invention relates to an anti-peeping screen of electronic displays such as computer monitors, mobile phone display screens and automatic teller machines. Background technique [0002] At present, the known anti-peeping screen of display is the anti-peeping screen of 3M Company of the United States, and its structure is realized by the vertical arrangement of ultra-fine louvers, and each ultra-fine louver is at a vertical angle to the display. The anti-peeping screen with this structure can only play the anti-peeping function when the left-right angle between the eyes and the display screen is less than 60 degrees. Eyes are visible within the range of 30 degrees to the left and right of the vertical display, and the anti-peeping function cannot be achieved up and down, front and back. Its disadvantage is that the display range is too large: the left and right privacy areas are small, the top and bottom cannot be kept secret, and the front and back ...
Claims
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IPC IPC(8): G09F9/00G02B27/00
Inventor 张勇
Owner 张勇