| dc.description.abstract | The color formation methods of the display basically divide into three kinds of methods: Time sharing method, Spatial formation method and Overlay formation method. Since color formation principles are different, they make the human eyes have differently visual fatigue. So far Time sharing will produce color break-up, and it’s easy to make human eyes be tired degree increase. It mostly uses subjective questionnaire method to assess visual fatigue from color break-up, so the results are less objective. In order to improve dependability and compare three color formation methods to the visual fatigue at the same time, we analyse visual fatigue by spectral power of high frequency component of accommodative microfluctuations.
In this study, we use 1.5x and 2x speed of color wheel single-chip DLP projector (time sharing method), a three-panel LCD projector (overlay formation method) and a LCD TV (spatial formation method) to investigate the color formation methods. The experiment divides into two modes: static and dynamic mode, and they stimulate human eyes at the same visual distance, different viewing time. Before and after viewing the displays, it must use auto refract-keratometer to record accommodative microfluctuations of subjects. In addition, we increase subjective questionnaire method to assess visual fatigue in the dynamic mode.
The experiment conclusions are divided into two parts of the static and the dynamic mode:
(a) In the static experiment, the LCD TV has slighter visual fatigue than the
1.5x-DLP projector and the three-panel LCD projector, but it does not have apparent difference to the 2x-DLP projector.
(b) In the dynamic experiment, the 1.5x-DLP projector has more serious visual
fatigue than the 2x-DLP projector and the three-panel LCD projector via subjective and objective method.
In this research we have already found the relation between color formation methods and visual fatigue, and will change the parameters in the experiment in the future. We hope to expound the relation between them more clearly. | en_US |