| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide new light condensation means that can efficiently use light energy. <P>SOLUTION: A light condensation optical element 10 is composed of an (A) member 11 having optical transparency and a particulate (B) member 12 having optical transparency and dispersed in the (A) member 11. When a wavelength of incident light is denoted by λ, the particle size of the (B) member is 0.1 λ to 10 λ. When light refraction index along an X axis in an electric field amplitude is denoted by n<SB POS="POST">ax</SB>and light refraction index along a Y axis in an electric field amplitude is denoted by n<SB POS="POST">ay</SB>in the (A) member 11, and light refraction index along an X axis in an electric field amplitude is denoted by n<SB POS="POST">bx</SB>and light refraction index along a Y axis in an electric field amplitude is denoted by the n<SB POS="POST">by</SB>in the (B) member 12, the light condensation optical element 10 is so configured that the n<SB POS="POST">ax</SB>and the n<SB POS="POST">bx</SB>are different and the n<SB POS="POST">ay</SB>and the n<SB POS="POST">by</SB>are significantly the same. <P>COPYRIGHT: (C)2012,JPO&INPIT |
