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Title:
OPTICAL SYSTEM
Document Type and Number:
Japanese Patent JPS5424650
Kind Code:
A
Abstract:

PURPOSE: To provide high reflectance and high durability suitable for luminous fluxes of near infrared region by letting one or more faces out of reflecting mirrors of optical system be a reflecting face comprising alternately laminating a low refractive index and high refractive index dielectric layers mainly composed of one or more layers of silicon dioxide.


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Inventors:
SUGAWARA NOBORU
ITOU SUSUMU
AMANO SAYOKO
Application Number:
JP9015877A
Publication Date:
February 24, 1979
Filing Date:
July 26, 1977
Export Citation:
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Assignee:
CANON KK
International Classes:
G02B5/08; (IPC1-7): G02B1/10; G02B5/08



 
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