Light mixing member, multiple-lamp lighting equipment and projection video display
A lighting device and video display technology, applied in projection devices, optics, instruments, etc., can solve problems such as uneven color, poor brightness distribution, and deterioration of display video varieties
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Embodiment approach 1
[0027] Compare below Figure 1 to Figure 3 , the multi-lamp lighting device and the projection video display device according to Embodiment 1 of the present invention will be described.
[0028] figure 1 It is a schematic configuration diagram illustrating a multi-lamp type lighting device and a projection type video display device according to an embodiment of the present invention. The multi-lamp type lighting device and the projection type video display device of this embodiment are basically the same as those disclosed in JP-A-2002-296679 described in the background art. The multi-lamp lighting device 1 includes a first light source 11 , a second light source 12 , a reflective mixing member 13 , an integrating lens (fly-eye lens pair) 14 , and a polarization conversion device 15 . The projection type video display device 10 includes the above-mentioned multi-lamp type lighting device 1 , condenser lenses 2 , 3 , 4 , a liquid crystal display panel 5 , and a projection le...
Embodiment approach 2
[0041] Compare below Figure 4 and Figure 5 , the light mixing member (reflection mixing member), multi-lamp lighting device, and projection video display device according to Embodiment 2 of the present invention will be described. In addition, the basic configurations of the multi-lamp type lighting device and the projection type video display device are the same as those of Embodiment 1, so they are also compared. figure 1 Be explained.
[0042] reflective mixing components 13', such as Figure 4 As shown in the plan view of (a) and the side view of (b), there are area A and area B. That is to say, it is divided into two regions A and B by a line perpendicular to the corrugated lines of the triangular prism part, and the two regions A and B are staggered from each other at a distance of 1 / 2 of the pitch of the corrugated lines of the triangular prism part. In this way, each area A, B is composed of two reflective optical members (hereinafter, the reflective optical mem...
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