The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2000
Filed:
Feb. 24, 1999
Cheng-Wei Chu, Taipei-Hsien, TW;
Chao-Tsang Wei, Taipei, TW;
Rung-Ywan Tsai, Kaohsiung, TW;
Fang-Chuan Ho, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A composite optical film with a low refractive index mainly comprises calcium fluoride (CaF.sub.2), and silicon dioxide (SiO.sub.2) mixed with a specific composition ratio. The composite optical film is formed on a quartz substrate. The composite film is formed by using a coater, which accommodates two individual e-gun sources inside a cylindrical chamber. Oxygen is bled into the chamber. A heating process and plasma formation are performed to assist the process of forming the composite film. Additionally, a laser reflection lenses comprises an optical film with high refractive index and an optical film with low refractive index, which are alternately laminated onto a quartz glass substrate. The optical film with low refractive index uses a composite optical film mainly comprising calcium fluoride (CaF.sub.2) and silicon dioxide (SiO.sub.2) mixed with a fixed composition ratio.