| 摘要 |
An automatic demonstration system for showing the effectiveness and advantage of a particular eye protection screen to be promoted includes an actuation device for moving the eye protection screen between a position for shielding a cathode ray tube (CRT) display and a position for exposing the CRT display under the control of a control device. An oscilloscope having a probe is provided to detect the intensity of electromagnetic radiation from the CRT display for the demonstration of the effectiveness of reducing the intensity of the radiation. An external light source is provided to project light onto the CRT display and/or the eye protection screen for the demonstration of the effectiveness of eliminating light reflection from the CRT display screen. An operation method associated with the system is also provided which includes repeatedly moving the eye protection screen between the positions of shielding and exposing the CRT display for demonstrating (1) display screen softness improved by the eye protection screen, (2) the reflection of light from the CRT display screen eliminated by the eye protection screen, and (3) radiation from the CRT display blocked and reduced by the eye protection screen. An indication device is also provided to indicate which demonstration is being carried out.
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