抄録
Increased VDT operations have produced an entirely new working environment and have made the burden too heavy for living bodies, causing health troubles to pose a social problem. To reduce such burden to a possible extent, the environment capable of receiving information effectively was studied from the viewpoint of lighting condition. Two experiments were conducted on problems within the visual field and illuminance in the circumference. The results show that the range where glare gives unpleasantness is smaller than the range where it changes the pupil. They also show that higher luminance in the circumference is desirable if the contrast of display characters is not degraded and that lower display brightness is desirable to the extent that visibility is not affected.
