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peterqd
Joined: 28 Feb 2007
Posts: 7448
Location: near High Wycombe, UK
Expire: 2014-01-04
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 Posted: Sat Nov 29, 2008 11:29 am Post subject: |
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peterqd wrote:
| hk300 wrote: |
You're right that it is sometimes easier to use USB or so, but if these are battery powered, it would be possible to use these in airtight/ closed boxes.
hmmmm ... let me think ...  |
Perhaps you could think about the fungus too. Airtight closed boxes are what it LOVES!!
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Sat Nov 29, 2008 11:39 am Post subject: |
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Attila wrote:
| peterqd wrote: |
| hk300 wrote: |
You're right that it is sometimes easier to use USB or so, but if these are battery powered, it would be possible to use these in airtight/ closed boxes.
hmmmm ... let me think ... |
Perhaps you could think about the fungus too. Airtight closed boxes are what it LOVES!! |
In humid environment like Hong Kong no other choice Peter, if keep humidity low in box no problem with that.
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Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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| Posted: Sat Nov 29, 2008 4:16 pm Post subject: |
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Jesito wrote:
| hk300 wrote: |
what LED type was used?
I have seen LED with 200 - 390nm light wave, UV-A, UV-B, UV-C, etc
... |
Sorry but I don't know. I got them as a prize for an article submission, they were labelled "UV LED" in the box, but no other data...
Jes.
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Jesito, Moderator 
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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hk300
Joined: 30 Oct 2008
Posts: 1041
Location: Hong Kong
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| Posted: Sat Nov 29, 2008 5:07 pm Post subject: |
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hk300 wrote:
| Jesito wrote: |
| hk300 wrote: |
what LED type was used?
I have seen LED with 200 - 390nm light wave, UV-A, UV-B, UV-C, etc
... |
Sorry but I don't know. I got them as a prize for an article submission, they were labelled "UV LED" in the box, but no other data...
Jes. |
Have you tried the effectiveness of these UV leds?
Could you kill or at least stop the fungus from spreading out? |
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hk300
Joined: 30 Oct 2008
Posts: 1041
Location: Hong Kong
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| Posted: Tue Dec 02, 2008 3:58 pm Post subject: |
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hk300 wrote:
I made a custom LED containing 4x white LED and 5x UV LED.
The only thing now is that i do not know how to test its effectiveness 
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Tue Dec 02, 2008 4:03 pm Post subject: |
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Attila wrote:
Put a test lens in damp environment like humidity over 70% and look fungus came or not. One lens for control without UV led, one with UV led. Breath both surface for food for fungus.
_________________
-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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hk300
Joined: 30 Oct 2008
Posts: 1041
Location: Hong Kong
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| Posted: Tue Dec 02, 2008 4:05 pm Post subject: |
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hk300 wrote:
| Attila wrote: |
| Put a test lens in damp environment like humidity over 70% and look fungus came or not. One lens for control without UV led, one with UV led. Breath both surface for food for fungus. |
LOL ...
how long do i need to test? 1 year? 10 years? 20 years?
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Tue Dec 02, 2008 4:10 pm Post subject: |
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Attila wrote:
Fungus start to came less than two weeks in this environment , you can recognize as oily spots this is removable with simple cleaning, looks like spiderweb comes lot more later yes.
_________________
-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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| Posted: Tue Dec 09, 2008 6:13 am Post subject: |
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Jesito wrote:
@Attila
Looks like a promising fungus farm,  .
@hk300
Well done!. I love your design.
UV should stop growth and probably kill the existing ones, but not remove the already grown ones. The radiation is enough to activate the sensible face of the boards to make printed circuits, so probably will kill them. But better testing it before...
Jes.
_________________
Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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hk300
Joined: 30 Oct 2008
Posts: 1041
Location: Hong Kong
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| Posted: Tue Dec 09, 2008 1:02 pm Post subject: |
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hk300 wrote:
| Jesito wrote: |
@hk300
Well done!. I love your design.
UV should stop growth and probably kill the existing ones, but not remove the already grown ones. The radiation is enough to activate the sensible face of the boards to make printed circuits, so probably will kill them. But better testing it before...
Jes. |
Jes
If you are willing to test the effectiveness ... let me know.
I can send it to you. |
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Jesito
Joined: 24 Aug 2007
Posts: 5745
Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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| Posted: Tue Dec 09, 2008 3:30 pm Post subject: |
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Jesito wrote:
| hk300 wrote: |
| Jesito wrote: |
@hk300
Well done!. I love your design.
UV should stop growth and probably kill the existing ones, but not remove the already grown ones. The radiation is enough to activate the sensible face of the boards to make printed circuits, so probably will kill them. But better testing it before...
Jes. |
Jes
If you are willing to test the effectiveness ... let me know.
I can send it to you. |
Thanks a lot, but I already built mine. Only that your mechanical design is far better than mine...
I use it regularly on all my lenses. Not sure if it does any good, but I'm trying...
Jes.
_________________
Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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hk300
Joined: 30 Oct 2008
Posts: 1041
Location: Hong Kong
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| Posted: Fri Dec 19, 2008 1:54 pm Post subject: |
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hk300 wrote:
Jes ... can you give any update on your UV Leds ...
how efficient have these been? |
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kds315*
Joined: 12 Mar 2008
Posts: 16664
Location: Weinheim, Germany
Expire: 2021-03-09
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| Posted: Sun Jan 18, 2009 2:48 am Post subject: |
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kds315* wrote:
I work a lot with UV for UV Photography.
My strongest light sources blasts up to 20.000 mW/sqcm (20 thousend milli Watts per square centimeter) - this is an industrial UV hardening device with built in mercury arc lamp. very dangerous thingy...!! Eye protection is a must!!
Maybe I should try that out to get rid of some yellowed glass...
Another newer one is a 250mW Nichia UV LED @365nm w. adjustable quartz condensor lens:
_________________
Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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