JVC DLA-RS45U 288 page operation manual for D-ILA Projectors DLA-RS65, DLA-RS5 - Page 76

3 Operation Separate images which can be seen by the right eye and left eye, respectively, are taken and produced separately. Therefore, the image for the left eye is only visible to the left eye, and the images for the right eye only or the right eye. The Human brain perceives stereoscopic images based on image information on both sides. Left-eye image Right-eye image Stereoscopic video image CAUTION In most cases, 3D images taken or produced are horizontally arranged respectively. If these images were not horizontally arranged for left and right eye movement when watching, the brain could not perceive a stereoscopic image, but would still recognize a double image. As such video images can cause 3D sickness, please do not hold the 3D glasses slanted relative to the video images. The closer one looks at stereoscopic images, the greater the binocular disparity, which means greater perception of outward projection. At the same time, the focus has to fit the screen, but the projecting image and the focus cause a great contradiction. This causes visual fatigue and discomfort. CAUTION Please watch from a distance three times the height of the screen. For example, for a projection size of 120, it should be approximately 4.5m, and for an 80-type, it should be around of 3 m. Please refer to page 19, where one can find a table with the screen seizes and at the same height. Choosing a distance closer than recommended may cause eyestrain. 76