Sharp Kabushiki Kaisha Corporation

Geomatec Co., Ltd.

Nec Corporation

Tokyo University of Science Foundation

Hiroyuki Sugawara

Kiyoshi Minoura

Hidekazu Hayashi

Akinobu Isurugi

Nobuaki Yamada

Miho Yamada

Takashi Satoh

Naohiro Shimada

Jun Taniguchi

Toshiyuki Nishina

An optical device case (A) of an embodiment includes: a light-transmitting window member (A); and a housing () which has a space for accommodating a light-receiving element and/or a light-emitting element (OE), wherein the window member (A) includes a light-transmitting member (), a polymer film () provided on an outer surface of the light-transmitting member (), the polymer film () having a moth-eye structure at its surface, a contact angle of the surface with respect to water being not less than 140&#xb0;, and a resistance heater () provided on an inner surface of the light-transmitting member ().

Optical device case and optical device

To provide a moth-eye transfer mold and a method of manufacturing a moth-eye transfer mold that provide a simple and inexpensive manufacturing process. A moth-eye transfer moldis characterized by including a base, an underlayerformed on the base, and a glassy carbon layerformed on the underlayer, the glassy carbon layerhas an inverted moth-eye structure RM over a surface, and the inverted moth-eye structure RM is randomly arranged cone-shaped pores.

Moth-eye transfer mold, method of manufacturing moth-eye transfer mold, and method of transferring moth-eye structure

A manufacturing method of a mold, the mold having at its surface a plurality of recessed portions whose two-dimensional size is not less than 10 nm and less than 500 nm when viewed in a direction normal to the surface, the method including: (a) providing a mold base, (b) partially anodizing an aluminum alloy layer, thereby forming a porous alumina layer which has a plurality of minute recessed portions; and (c) after step (b), bringing the porous alumina layer into contact with a first etching solution, thereby enlarging the plurality of minute recessed portions of the porous alumina layer. Step (a) of providing the mold base includes (a) providing a metal base, (a) forming an aluminum alloy layer on the metal base, and (a) forming a surface protection layer on the aluminum alloy layer. Step (a) and step (a) are performed in a same chamber.

Method for producing mold

A mold base of an embodiment is a mold base for use in manufacture of a mold that has a porous alumina layer over its surface, including: a base; and an aluminum alloy layer provided on the base, wherein the aluminum alloy layer contains aluminum, a non-aluminum metal element, and nitrogen. The aluminum alloy layer of the mold base of an embodiment of the present invention has high specularity.

Mold base material, production method for mold base material, mold production method, and mold

A method for manufacturing a moth-eye mold of an embodiment of the present invention employs a mold base including a metal base, an organic insulating layer provided on the metal base, and an aluminum alloy layer provided on the organic insulating layer, the aluminum alloy layer containing aluminum and a non-aluminum metal element M, an absolute value of a difference between a standard electrode potential of the metal element M and a standard electrode potential of aluminum being not more than 0.64 V, and a content of the metal element M in the aluminum alloy layer not exceeding 10 mass %.

Mold production method

A multiplexer apparatus supporting variable input bit stream rates in a single device is constructed by common use of a configurable buffer memory and a frequency dividing counter of the reference clock pulse. An externally generated selection signal corresponding to one of the variable input bit stream rates determines the length of the configurable buffer memory. The common frequency dividing counter of the reference clock pulse is designed by comparing bit patterns for the requisite initial counter values for each of the variable input bit stream rates.

Growing community of inventors

Miyagi, Japan

Hiroyuki Sugawara