We established original production line with the high technology cultivated in the tradition since foundation 1890 to meet customer’s needs from the design to the completion of products.

Opt Department Glass various characters OTA (Alminosilicate Glass) The original glass 【OTA】 (patent acquisition) which was developed in order to support the high output of a projector source of light and downsized projector. It is excellent glass in heat resistance, strength, precision in comparison with usual borosilicate glass. It is adopted widely as rear projection TV reflector for the projector at present 【our (company ratio) 】 OTA (Alminosilicate Glass) Strain point ６４０℃ Thermal Expansion coefficient ３３×１０-7/℃ OTI (Alminosilicate Glass) The original glass 【OTI】was developed for the market needs of more high brightness and high output glass. The material which evolved OTA (patent acquisition) and which succeeded in the great improvement of heat temperature area. It is the glass which it will suggest to the customer as a stable high brightness reflector. OTI (Alminosilicate Glass) Strain point ６７４℃ Thermal Expansion coefficient ３４×１０-7/℃ Borosilicate Glass T-41 Strain point ５３０℃ Thermal Expansion coefficient ４０×１０-7/℃ Borosilicate Glass α-38 Strain point ４２０℃ Thermal Expansion coefficient ３８×１０-7/℃ Projector Internal Structure TOP 　Products Guidance Glasses for the illumination Reflectors Applied products 　Research and Development Glass Material Dominant Technology Quality Control

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