WTS: Calibration lights for DIY integrating spheres / lumen tubes - 67 € -

333 posts / 0 new
Last post
ktown
Offline
Last seen: 2 years 9 months ago
Joined: 12/01/2018 - 18:49
Posts: 1
Location: Spain

I’m interested in purchasing one, and sent a PM asking for the paypal details. Thanks.

DB Custom
DB Custom's picture
Offline
Last seen: 1 day 8 hours ago
Joined: 01/13/2013 - 22:28
Posts: 20726
Location: Heart of Texas

Maukka has sent these calibration lights my way, 3 of us will be testing with them here in Texas soon, will report…

MRsDNF
MRsDNF's picture
Offline
Last seen: 1 month 6 days ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.

Hi Maukka. Do you have any left to sell?

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

I’ve got one.

MRsDNF
MRsDNF's picture
Offline
Last seen: 1 month 6 days ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.

Thanks. Payment sent.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

ZozzV6
ZozzV6's picture
Offline
Last seen: 1 month 2 weeks ago
Joined: 03/24/2016 - 12:19
Posts: 2427
Location: Near to my soldering iron.

Hi Maukka! Will you make more of these calibration lights? I consider buying a pair early next year.

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

I have some lights left, but haven’t measured them yet.

SKV89
Offline
Last seen: 1 week 2 hours ago
Joined: 12/10/2017 - 12:46
Posts: 4335
Location: US

Maukka, I would like to send some Jetusolis to you to get some calibration readings. Optisolis makes for a better calibration light. How much would you charge for that? Thanks.

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

15 euros per light + 7.50 euros for shipping.

Do you already have those lights from Clemence?

SKV89
Offline
Last seen: 1 week 2 hours ago
Joined: 12/10/2017 - 12:46
Posts: 4335
Location: US

He will ship it for me. Will PM me.

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Would probably make more sense for him to ship them straight to me. He’s already sending some over to me anyways.

SKV89
Offline
Last seen: 1 week 2 hours ago
Joined: 12/10/2017 - 12:46
Posts: 4335
Location: US

I meant he will ship them directly to you

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

If anyone else is interested in the Optisolis/E21A powered Jetbeams Clemence with calibration data, let me know. No schedule is set yet so be patient.

Disclaimer: I’m not sure these will make for a better calibration if you mostly want to test low CRI lights with lux meters, but the smooth spectrum of the Optisolis would be a great reference for future.

Just like with the S2+ and BLF348 or any other light, price for measurement is 15 euros per light plus intl shipping (4.70 or 7.50 euros depending on weight). Does not include the price of the light itself.

Interest list:
1. SKV89
2.

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Three more original calibration sets (BLF348 & S2+) ready to go immediately.

MRsDNF
MRsDNF's picture
Offline
Last seen: 1 month 6 days ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.

Two torches arrived today thank you very much maukka. Now to find time to play. Smile

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Great, that was quite a bit faster than I expected to Australia Thumbs Up

MRsDNF
MRsDNF's picture
Offline
Last seen: 1 month 6 days ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.

18 days total time for delivery over Xmas is not bad at all. Thanks again. Thumbs Up

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

contactcr
Offline
Last seen: 6 hours 19 min ago
Joined: 05/19/2017 - 18:52
Posts: 3640
Location: US

the Jetusolis orders are starting. Can I make arrangement with clemence to get one shipped directly to you?

dsb171963
Offline
Last seen: 7 months 4 days ago
Joined: 01/22/2019 - 13:59
Posts: 2
Location: USA

Hello Maukka,

I’m interested in the flashlights. Are they still available? PM me if they are. Thank you.

vestureofblood
vestureofblood's picture
Offline
Last seen: 1 day 15 hours ago
Joined: 08/17/2012 - 15:21
Posts: 1987
Location: Missouri

Maukka, what is the largest diameter light you are able to test? Also what would be the upper limit in lumens?

In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
http://asflashlights.com/ Everyday Carry Flashlights, plus Upgrades for Maglite.

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland
vestureofblood wrote:
Maukka, what is the largest diameter light you are able to test? Also what would be the upper limit in lumens?

The input port is 100mm in diameter. No upper limit in lumens.

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland
dsb171963 wrote:
I’m interested in the flashlights. Are they still available? PM me if they are. Thank you.

Two sets still left.

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 41 min ago
Joined: 10/22/2016 - 11:41
Posts: 12856
Location: Houston Texas
maukka wrote:
vestureofblood wrote:
Maukka, what is the largest diameter light you are able to test? Also what would be the upper limit in lumens?

The input port is 100mm in diameter. No upper limit in lumens.


From Lisun:
The IS-0.5M (19.685 inch) is suitable for LEDs, LED modules, High Power LED, mini bulbs and other small lamps. The flux testing range is 0.001 to 1,999 lumen.

I believe Maukka uses a neutral density filter over the sensor to allow for much higher outputs than the rated 2,000 lumen. These filters seem to give a very consistent reduction in lumens.

Surely there must be a lumen limit, but who knows what it is.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Sphere is not needed for testing maximum lumens as long as you can measure a lower mode of the same light.

vestureofblood
vestureofblood's picture
Offline
Last seen: 1 day 15 hours ago
Joined: 08/17/2012 - 15:21
Posts: 1987
Location: Missouri
maukka wrote:
Sphere is not needed for testing maximum lumens as long as you can measure a lower mode of the same light.

So for high power stuff you would just test the light on a low mode and then calculate the max based on some curve related to the expected diminished returns?

In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
http://asflashlights.com/ Everyday Carry Flashlights, plus Upgrades for Maglite.

contactcr
Offline
Last seen: 6 hours 19 min ago
Joined: 05/19/2017 - 18:52
Posts: 3640
Location: US

Relative brightness using two measurements outside the sphere I would guess or just heavily filter the sensor and take the same 2 readings to re-calibrate

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 41 min ago
Joined: 10/22/2016 - 11:41
Posts: 12856
Location: Houston Texas
vestureofblood wrote:
maukka wrote:
Sphere is not needed for testing maximum lumens as long as you can measure a lower mode of the same light.

So for high power stuff you would just test the light on a low mode and then calculate the max based on some curve related to the expected diminished returns?


I suspect something like measuring Low in the sphere. Let’s say it’s 953 lumen. Then do a ceiling bounce. Let’s say it measures 110 lux. That’s 8.66 lumen per lux. Then do the exact same ceiling bounce, except on Turbo. If we get 769 lux, then we can calculate the increase which comes to 6,662 lumen.

This makes sense in theory, but I’m not sure about in reality.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

Wieselflinkpro
Wieselflinkpro's picture
Offline
Last seen: 2 weeks 3 days ago
Joined: 05/21/2015 - 04:34
Posts: 980
Location: Germany - TLF
JasonWW wrote:
vestureofblood wrote:
maukka wrote:
Sphere is not needed for testing maximum lumens as long as you can measure a lower mode of the same light.

So for high power stuff you would just test the light on a low mode and then calculate the max based on some curve related to the expected diminished returns?


I suspect something like measuring Low in the sphere. Let’s say it’s 953 lumen. Then do a ceiling bounce. Let’s say it measures 110 lux. That’s 8.66 lumen per lux. Then do the exact same ceiling bounce, except on Turbo. If we get 769 lux, then we can calculate the increase which comes to 6,662 lumen.

This makes sense in theory, but I’m not sure about in reality.


I did the same thing since I hat to measure a Olight X9R.
This flahlight has a sensor which lowers the output if something is too near to the reflector. With this I could not check the higher output-levels with my box. I checked lux in our toilette to calculate the lumen of the higher levels.
After that I made the same with my Imalent DX80, I found out that my box shows too low values on the higher output levels above 10,000 lumen.
Than I build a sphere and rechecked it with the Imalent MS12 and R90C. And there are some differences in higher levels too. Around 15,000 (R90C) or 20000 (MS12) there were some differences.

For the DX80 I rececked my lumen readings with the readings from spheres of other TLF/BLF members.

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

Three sets left and ready to go. Then I run out of lights and don’t know when I’m getting more.

maukka
maukka's picture
Offline
Last seen: 5 months 4 weeks ago
Joined: 12/31/2015 - 04:15
Posts: 2175
Location: Finland

SKV89’s and contactcr’s Jetusolis are here. Will test them as soon as possible.

Pages