Apparatus for watching display screen

A display screen and empty space technology, applied in installation, optics, instruments, etc., can solve the problems of enlarged eyes, eye fatigue, display screen fatigue, etc., and achieve the effect of preventing myopia and treating pseudomyopia

Active Publication Date: 2009-01-21
王霖华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the prior art is that only the viewing angle of the eyes is required to be increased, and the adjustment of the eyes is not required to be relaxed, and the eyes are prone to fatigue
The "device for viewing the display screen (that is, a special platform for placing the display screen devi...

Method used

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  • Apparatus for watching display screen
  • Apparatus for watching display screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: A kind of device of viewing display screen is compared with prior art " protection screen with magnifying glass for display " (Patent No. is ZL 200420078331.9), is characterized in that the distance between display screen and magnifying glass in " device for viewing display screen " u can be adjusted in the interval of 1.1f>u>f / (f+1), where u is the distance between the magnifying glass and the display screen, f is the focal length of the magnifying glass, and the unit of f and u is meter. When u=fv / (f+v), the virtual image of the display screen seen through the magnifying glass is at v meters, and v=fu / (f-u). For example, when u=f / (f+1), the distance between the virtual image of the display screen seen through the magnifying glass and the magnifying glass is equal to 1 meter. When u=3f / (f+3), the virtual image of the display screen seen through the magnifying glass is equal to 1 meter. The distance from the magnifying glass is equal to 3 meters, and when ...

Embodiment 2

[0035] Embodiment 2: as figure 2 A shown convex lens device for watching a display screen is composed of a convex lens 1, a bracket 2 of a fixed structure and a computer monitor with a liquid crystal display 3. The convex lens is a rectangular convex lens with a focal length of 50 cm (the plane of the plano-convex convex lens can be facing outward or inward. When the plane is facing the observer, it can reduce reflection, and when the plane is facing the display screen, the distance from each point on the surface of the convex lens to the display screen is the same. uniform surface), the distance u between the convex lens 1 and the display screen 3 is 49 centimeters. The virtual image of the display screen is seen by the eyes through the convex lens at a distance of about 24.5 meters (such as image 3 As shown, u=0.49 meters, v=24.5 meters).

Embodiment 3

[0036] Embodiment 3: the device for watching the display screen as shown in Figure 4, 1 is an aspherical convex lens that can reduce distortion, and the convex lens is connected to the flexible bellows type support 2 through the mirror frame, and its length is approximately equal to the focal length of the convex lens f, 4 is a special component spring clip connected to the display device. During use, the spring clip 4 is clamped on the upper edge of the liquid crystal display, and the eyes watch through the convex lens 1.

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PUM

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Abstract

The invention relates to a device for watching display screens, and relates to the display and computer desk technical fields. The invention includes a display screen device or a computer desk (or a special member including the display screen device), which is characterized in that a convex lens for watching the same display screen with two eyes and a support for keeping a stable distance between the positions of the convex lens and the display screen are arranged on the display screen device or computer desk (or the special member including the display screen device), and the distance between the positions of the convex lens and the display screen is u which is some value more than f/(1+f) and less than 1.1. The device enables an observer to change from watching a nearby display screen to a distant display screen virtual image, and relaxes and adjusts the eyes with comfort and hardiness. The device is beneficial for reducing the eye fatigue caused by long-time watching the nearby display screen, and beneficial for watching for a long time as well as for watching by a presbyopia or a farsightedness.

Description

technical field [0001] The invention relates to the technical fields of displays, convex lenses, computer desks and the like. Background technique [0002] When the eyes look at a distance, the adjustment and concentration of the eyes are in a relaxed state and it is not easy to get tired. When watching a computer for a long time, the display screen is closer to the eyes, the adjustment and concentration of the eyes are in a tense state, and the eyes are prone to fatigue. In the prior art, the magnifying glass for viewing the display screen (such as ZL Patent No. 200420078331.9 "Magnifying Glass Protective Screen for Display") is to place a convex lens that acts as a magnifying glass in front of the display screen, and its subjective purpose is to increase the viewing angle of the eyes rather than zoom in For the object image, because the distance between the display screen and the convex lens has little effect on the viewing angle of the eyes, the distance between the magni...

Claims

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Application Information

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IPC IPC(8): G02B7/02G02B27/02
Inventor 王霖华
Owner 王霖华
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