Patent
Optical filter and optical apparatus
Masayuki Uchiyama,Michio Yanagi +1 more
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TLDR
In this paper, a gradient refractive index thin film with a change in the film thickness direction is formed on the substrate and an anti-reflection structure is constructed on the gradient this paper.Abstract:
Regarding an optical filter comprising a light-transmitting substrate, a gradient refractive index thin film with a refractive index change in the film thickness direction formed on the substrate and an anti-reflection structure formed on the gradient refractive index thin film, the gradient refractive index thin film is formed so as to have light absorbing characteristic and a refractive index characteristic such that the refractive index change comprising plural changing points with increases and decreases of the refractive index has a tendency to reduce from the side of the substrate toward the side of the anti-reflection structure. The optical filter has excellent environmental resistance and low reflection. The optical filter can be suitably used in an imaging optical system of an optical apparatus or a display of an electronic device.read more
Citations
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Optical filter, optical device, electronic device, and antireflection complex
Masayuki Uchiyama,Michio Yanagi +1 more
TL;DR: In this article, the authors provided an optical filter or an anti-reflection structure with lower reflection in comparison with the conventional ones by comprising a gradient refractive index thin film 12 with continuous, periodic refractive indices change in the film thickness direction and a fine periodic structure 151 lowering reflection.
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Optical member provided with anti-reflection film
TL;DR: In this paper, an anti-reflection film is constructed on the surface of the transparent base material (30), which consists of a gradient refractive index structure layer (10) and an interference layer (20) for suppressing reflected light by interference.
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References
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Patent
Optical transparent member and optical system using the same
Masayuki Yamada,Yoshinori Kotani,Hiroyuki Tanaka,Takeharu Okuno,Tsutomu Minami,Masahiro Tatsumisago,Kiyoharu Tadanaga +6 more
TL;DR: In this article, the authors propose an object to provide an optical transparent member capable of maintaining a high-performance antireflection effect for a base over a long period of time, and an optical system using the same.
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