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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum ( )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Original Message:

Posted by: Jean Marie Cloarec ( )
Date posted: Thu Mar 23 12:23:13 US/Eastern 2000
Subject: Reliability data
I'm searching reliability information about optical components : lens, mirror, .... failure mode and failure data. If you websites or if you have some informations .... thank you


Subject: Lens/Mirror Reliability
Reply Posted by: Bruce Dudley ( )
Organization: Reliability Analysis Center
Date Posted: Tue Mar 28 12:51:11 US/Eastern 2000
From the Non-Electronic Parts Reliability Data (NPRD-95), I found reliability data that indicated that the Lens failure rate for a ground benign conditions was 0.05 failures per million hours. From the Failure Mode and Mechanism Distribution (FMD-97), I found that Lens have a distribution of failure modes of 60% cracked or fractured, 20% broken and 20% scarred or punctured. I could not locate optical mirror information in our usual sources.

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