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Re: [OM] Cloudy rear element on the 65-200/4

Subject: Re: [OM] Cloudy rear element on the 65-200/4
From: John Hermanson <omtech1@xxxxxxxxxxx>
Date: Tue, 03 May 2011 08:15:04 -0400
We had a nice weekend but now cloudy / rainy all week. I don't know when 
I'll get around to it.

___________________________________
John Hermanson  |   CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121  |  www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html

On 5/2/2011 3:23 PM, Chuck Norcutt wrote:
> Do you plan to try it?  Yes, I know, that means the sun must shine for
> several days on Long Island.  :-)
>
> Chuck Norcutt
>
>
> On 5/2/2011 9:09 AM, John Hermanson wrote:
>> interesting, I'd like that to fix my 8mm FE.
>>
>> ___________________________________
>> John Hermanson  |   CPS, Inc.
>> 21 South Ln., Huntington NY 11743
>> 631-424-2121  |  www.zuiko.com
>> Olympus OM Service since 1977
>> Gallery: www.zuiko.com/album/index.html
>>
>> On 5/1/2011 12:15 PM, Chuck Norcutt wrote:
>>> I have perhaps one of the few living 65-200/4s that has not been
>>> affected by the dreaded cloudy element disease.  I've often wondered
>>> what was the cause and never seen anything regarding another type of
>>> lens that sounded like it might be the same malady... until today.
>>>
>>> I was just reading the following note on the Kiron Klub list on Yahoo.
>>> It certainly sounds similar.  Maybe someone with a cloudy 65-200 will
>>> give the recommended solution a try.  Your guess is as good as mine
>>> about the veracity of the solution.
>>>
>>> Chuck Norcutt
>>>
>>> -----------------------------------------------------
>>>     >    Has anyone experienced a Kiron 28-85 varifocal with a hazy or 
>>> cloudy
>>>     >element near the rear of the lens? If so, did the serial number start
>>>     >"054". Yes, I have one.
>>>     >    Thanks for your attention. Mel
>>>     >
>>>
>>> There is a glass that is doped with a rare earth that will cloud up over
>>> time. Don't remember the details except it is a solid state effect
>>> caused by electron getting bump up into a quantum level. Like in a laser
>>> only they become trapped.
>>>
>>> The cure is for the glass to be exposed to strong UV. Might want to
>>> leave it outside on a sunny day or next to a UV lamp and see what
>>> happens. Depending on the strength of the UV source it might take up to
>>> 24 hours exposure
>>> ------------------------------------------------------
>>

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