| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical multilayered structure which has less reflection boundary surfaces and has a simple arrangement. SOLUTION: An optical multilayered structure 1 has an arrangement where a first transparent layer 11 brought into contact with a substrate 10 used as an incidence medium, a gap part 12 which has a size allowing the occurrence of an interference phenomenon of light and can change the size, a second layer 13 being absorbent of light, and a third layer 14 being absorbent of light are arranged on the substrate 10 in order, and the optical multilayered structure modulates incident light from the substrate 10 side. They are set so as to satisfy formula (5) where nS and n<SB>1</SB>are refractive indexes of the substrate 10 and the first layer 11, respectively, and N<SB>2</SB>(=n<SB>2</SB>-i k<SB>2</SB>, n<SB>2</SB>is the refractive index, k<SB>2</SB>is the attenuation coefficient, and i is the imaginary unit) and N<SB>3</SB>(=n<SB>3</SB>-i k<SB>3</SB>, n<SB>3</SB>is the refractive index, k<SB>3</SB>is the attenuation coefficient, and i is the imaginary unit) are complex indexes of refraction of the second layer and the third layer, respectively. COPYRIGHT: (C)2003,JPO
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