6-27 Update Home Made Pseudo Integrating Sphere - photos and readings!
**UPDATED CHART - NEW READINGS**
Sometimes you just have to see for yourself, you know? Before you read this, please understand this disclaimer – I make no claims that the readings from the home made, uber cheap 'pseudo integrating sphere' are accurate! This was put together for my own edification and to satisfy curiosity, but it worked pretty well so I thought I'd share the results.
Paid $130 for the meter - $40 for the smooth foam ball (shipped), about $4 for the PVC pipe and $6 for a roll of black duct tape (which I still have most of). So for a total expenditure of about $180 I have a handy dandy 'poor man's' integrating sphere.
Test measurements are at the end of the post, but I thought I'd show you the construction. Inspiration came from a great thread over here, so I take NO credit for the idea of how to construct this – precisionworks and others provided the inspiration and the ideas.
Most of the photos are labeled.
And here are the measurements. Pretty darn close – again, I make no claims for accuracy – this was just a fun project for me. Just fyi, the lux rating is what my meter shows – I divided each reading by 36 to estimate the lumens rating. I read that somewhere in the forum, although I can't remember where.
This is the Spy 007 before (left side) and after (right side) DaFABRICATA XPG Neutral emitter swap
And here's my newest chart including some oldies and a few new lights. As my collection evolves, I try to keep this updated.
Hope this is of use or interest to someone!
Please PM or post if you have any questions...
lovecpf
**UPDATED CHART - NEW READINGS**
Sometimes you just have to see for yourself, you know? Before you read this, please understand this disclaimer – I make no claims that the readings from the home made, uber cheap 'pseudo integrating sphere' are accurate! This was put together for my own edification and to satisfy curiosity, but it worked pretty well so I thought I'd share the results.
Paid $130 for the meter - $40 for the smooth foam ball (shipped), about $4 for the PVC pipe and $6 for a roll of black duct tape (which I still have most of). So for a total expenditure of about $180 I have a handy dandy 'poor man's' integrating sphere.
Test measurements are at the end of the post, but I thought I'd show you the construction. Inspiration came from a great thread over here, so I take NO credit for the idea of how to construct this – precisionworks and others provided the inspiration and the ideas.
Most of the photos are labeled.
And here are the measurements. Pretty darn close – again, I make no claims for accuracy – this was just a fun project for me. Just fyi, the lux rating is what my meter shows – I divided each reading by 36 to estimate the lumens rating. I read that somewhere in the forum, although I can't remember where.
This is the Spy 007 before (left side) and after (right side) DaFABRICATA XPG Neutral emitter swap
And here's my newest chart including some oldies and a few new lights. As my collection evolves, I try to keep this updated.
Hope this is of use or interest to someone!
Please PM or post if you have any questions...
lovecpf
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