Product: https://www.tklamp.co/product/tklamp-flashlight-tester-2014-new-version-pre-order
Datasheet: https://assets-global.website-files.com/64eed550a599d7f1e1f33657/65663739a5c23a3f0280cef7_TKlamp%20flashlight%20tester%20datasheet.pdf
Have talked to TKLamp a bit about this, and it’s really promising, a decent integrating sphere for $350 with no calibration needed (free recalibration at any time if you ship it to them), and, from my conversation with them, good enough repeatability (~1% variance) that it can be used as a reference to make calibration lights for other equipment too, plus it has a separate external luxmeter for measuring candela.
I asked them if they could incorporate datalogging into it too, as their other product, a car headlight tester, incorporates this, and they said they could if there was enough demand, and if I could get a group buy of 10+ then they could make a custom version with those capabilities.
The entry port size is a little too small for some of the biggest lights, but if you have one it would be easy to make and calibrate a larger tube/sphere for those using it, and the maximum brightness is 13,000lm, but it would be easy to just add an ND filter to the port to test higher outputs (or use it to calibrate a tube as mentioned above).
Price will be $350, although if I get a decent sized group buy together, might be less, so I guess post if you’re in for $350 or if you are interested if I could get us a lower price.
So, who wants an integrating sphere?
Crossposted with BLF, we need to get 10 people signed up to get this version made.
1. Wolfgirl42 (BLF) (/u/SiteRelEnby Reddit)
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by SiteRelEnby
