Invention Grant
- Patent Title: Quartz glass cylinder for production of an optical component and method for production thereof
- Patent Title (中): 用于制造光学部件的石英玻璃圆筒及其制造方法
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Application No.: US10559736Application Date: 2004-06-02
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Publication No.: US07712335B2Publication Date: 2010-05-11
- Inventor: Heinz Fabian
- Applicant: Heinz Fabian
- Applicant Address: DE Hanau
- Assignee: Heraeus Quarzglas GmbH & Co. KG
- Current Assignee: Heraeus Quarzglas GmbH & Co. KG
- Current Assignee Address: DE Hanau
- Agency: Tiajoloff and Kelly LLP
- Priority: DE10325539 20030604
- International Application: PCT/EP2004/005950 WO 20040602
- International Announcement: WO2004/108615 WO 20041216
- Main IPC: C03C15/00
- IPC: C03C15/00

Abstract:
The aim of the invention is to improve a known quartz glass cylinder for the production of an optical component, comprising an inner drilling, which is mechanically machined to size and provided with an etched structure by means of an etching treatment, subsequent to the mechanical machining, such that in the application thereof for production of pre-forms and optical fibers, few bubbles arise along the boundary surface between core and sleeve. Said aim is achieved, whereby the etched structure comprises striations with a maximum depth of 2.0 mm and a maximum width of 100 μm. A method for production of such a quartz glass cylinder mechanically machined to size is characterized in that the mechanical machining comprises several serial removal processes with successively lower removal depths, whereby after the last removal process the inner drilling has sub-surface striations with a maximum depth of 2 mm and the inner drilling is subsequently subjected to an etching treatment such that an etching removal with a maximum depth of 50 μm is achieved.
Public/Granted literature
- US20060137401A1 Quartz glass cylinder for production of an optical component and method for production therof Public/Granted day:2006-06-29
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