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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: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Tue, 03 May 2011 09:17:33 -0400
You could also use a UV light source but I don't know how many of us 
just happen to have UV light sources laying around.  :-)

Chuck Norcutt


On 5/3/2011 8:15 AM, John Hermanson wrote:
> 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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