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Subject:	Re: inspection lighting
From:	<[log in to unmask]>
Date:	Mon, 12 Aug 1996 14:59:47 +0400 (EDT)
Content-Type:	TEXT/PLAIN
Parts/Attachments:	TEXT/PLAIN (47 lines)

Todd, the NASA printed wiring board spec calls for "100 foot-candles" of 
light intensity where visual acuity is critical.  I don't think there's 
anything like this in military board specs.

You might be interested to know that the IPC has published IPC-OI-645, 
"Standard for Visual Optical Inspection Aids".  It doesn't get specific 
about intensity or color temperature but may be of some use.  

Incidentally, I volunteered to chair the task group responsible for 
administering OI-645 when the original chair (Don Strilttmatter) 
retired.  (That was in April 1994.)  A meeting of the task group is 
scheduled for Wednesday, 23 October, at the TechWorks meeting.  Any 
improvements you or TechNet want to suggest would be welcome at that meeting.

Lou Hart	Compunetics

.

On Fri, 9 Aug 1996, Todd Rogers wrote:

> I am currently in the process of re-evaluating my final inspection area.  I
> have made many changes to the configuration of the area and am now
> attempting to evaluate the lighting of the inspection work stations.  My
> question is, what is the correct or optimum lighting required for the
> inspection of bare PCB's and what are the methods of measurment?
> 
> Any information on this subject can be helpful.
> Thank You!
> 
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