1
Daimon Hideo, Umebayashi Nobuhiro, Sanpei Tetsuhiko, Sakamoto Akito: Antireflection film, method for manufacturing the same, stamper for manufacture of antireflection film, method for manufacturing the stamper, casting mold for manufacture of stamper and method for manufacturing the casting mold. Hitachi Maxell, February 13, 2003: JP2003-043203 (22 worldwide citation)

PROBLEM TO BE SOLVED: To provide an antireflection film in any size and to provide a method for mass producing the antireflection film at a low cost. SOLUTION: The antireflection film consists of a light transmitting plastic base body having micro-recesses and projections on at least one surface of ...


2
Sanpei Tetsuhiko, Umebayashi Nobuhiro, Sugiyama Toshinori, Sakamoto Akito: Method for forming fine rugged structure, and member having the ruggedness. Hitachi Maxell, March 5, 2003: JP2003-066203 (6 worldwide citation)

PROBLEM TO BE SOLVED: To form a fine ruggedness at a low cost for the purposes of antireflection, water repellency, heat radiation and adhesion and in particular, to provide a method for forming the ruggedness having the antireflection effect without any wavelength dependence, and to provide a membe ...


3
Sakurai Yuichi, Nagataki Yoshiyuki, Takazawa Koji, Hayashi Takuya, Umezawa Kazuyo, Tamura Norihito, Suenaga Masashi, Shirai Hiroshi, Sanpei Tetsuhiko: Substrate for information recording medium and information recording medium. Hitachi Maxell, August 11, 2000: JP2000-222780 (3 worldwide citation)

PROBLEM TO BE SOLVED: To reduce jitters and a block error rate by accurately reproducing recording marks which are formed in pre-grooves narrower than the diameter of a reproduction light spot. SOLUTION: The information recording medium has a light absorbing layer, a light reflecting layer, and a pr ...


4
Shirai Hiroshi, Tamura Norihito, Sanpei Tetsuhiko, Umezawa Kazuyo: Optical information recording medium and method of manufacturing the same. Hitachi Maxell, August 31, 2001: JP2001-236689 (2 worldwide citation)

PROBLEM TO BE SOLVED: To provide an optical information recording medium which prevents generation of cross-erase in the case of recording information and which is excellent in durability for rewriting, and to provide a method of manufacturing the medium.SOLUTION: The optical information recording m ...


5
Umebayashi Nobuhiro, Daimon Hideo, Sanpei Tetsuhiko, Sakamoto Akito: Optical communication component and method for manufacturing stack type optical communication module. Hitachi Maxell, September 25, 2003: JP2003-270497 (2 worldwide citation)

PROBLEM TO BE SOLVED: To provide an optical communication component (lens for optical communication, optical bench) which is compact and can be combined with a stack type optical communication component and a method for manufacturing the compact stack type optical communication module having a three ...


6
Umebayashi Nobuhiro, Sanpei Tetsuhiko, Aihara Makoto: Microlens array, stamper, and method for manufacturing liquid crystal display device. Hitachi Maxell, July 28, 2005: JP2005-201933 (1 worldwide citation)

PROBLEM TO BE SOLVED: To provide a manufacturing method capable of forming lens surfaces with high accuracy and manufacturing a large quantity of microlens arrays at a low cost.SOLUTION: The method for manufacturing the microlens arrays comprises forming a plurality of the microlens arrays 21 and 12 ...


7
Umebayashi Nobuhiro, Daimon Hideo, Sanpei Tetsuhiko, Sakamoto Akito: Optical communication parts and method for manufacturing laminated optical communication module. Hitachi Maxell, September 25, 2003: JP2003-270504 (1 worldwide citation)

PROBLEM TO BE SOLVED: To provide optical communication parts (lenses for optical communication, optical benches) which can be combined with compact laminated optical communication parts and a method for manufacturing the compact laminated optical communication module containing three-dimensional opt ...


8
Fukao Ryuzo, Sanpei Tetsuhiko: Optical module, method for manufacturing optical module and optical substrate for optical module. Hitachi Maxell, January 20, 2005: JP2005-017359 (1 worldwide citation)

PROBLEM TO BE SOLVED: To improve the durability of an optical module by suppressing the occurrence of crack to the optical module by a temperature fluctuation.SOLUTION: The optical module is arranged with a wall member 15 between an Si substrate 11 and a lens 21 mounted on the Si substrate 11 and is ...


9
Fukao Ryuzo, Sanpei Tetsuhiko: Manufacturing method of optical bench, optical bench, optical module, silicon wafer substrate on which wiring pattern and groove are formed, and wafer. Hitachi Maxell, January 27, 2005: JP2005-025172

PROBLEM TO BE SOLVED: To improve a yield and shorten a process time by drastically raising an efficiency of a manufacturing process in a groove processing for forming grooves for carrying optical parts therein and in an optical bench to which wiring is formed.SOLUTION: The optical bench to which opt ...


10
Komatsu Takehiko, Sanpei Tetsuhiko: Method and equipment for plasma dry etching. Applied Materials, February 12, 1999: JP1999-040543

PROBLEM TO BE SOLVED: To promote progress of etching by, in plasma, using a mixed gas of trifluoromethane and nitrogen as etching gas when an SiO2 film on a substrate is dry-etched, for allowing radical and ion generated in plasma to react with SiO2. SOLUTION: While an etching gas supplied into a va ...