April 26th, 2008
DIY Lux Meter
The Lux Meter is usually used to measure illumination. The illumination is how level of luminous flux is falling on a surface area. The luminous flux is visible component that is defined in radiant flux (light power) divided by relative sensitivity of human eyes over the visible spectrum. This means the Lux is well fit to light level from sense of human eyes.
However there is a difference between spectra response of ordinary silicon photo diode and human eyes, it cannot be used for the lux meter. Some photo diodes for illumination sensor have a color compensation filter on the window to correct its spectra response.
DIY Lux Meter: [Link]
April 26th, 2008 at 7:20 pm
[...] However there is a difference between spectra response of ordinary silicon photo diode and human eyes, it cannot be used for the lux meter. Some photo diodes for illumination sensor have a color compensation filter on the window to correct its spectra response. [via] [...]
May 14th, 2009 at 7:34 am
HI THERE. I AM DOING A FLUX METER PROJECT . I NEED TO DISPLAY MY OUTPUT IN DIGITAL WAY. DO U KNOW HOW CAN I DO THIS?? THANKS
May 14th, 2009 at 11:19 am
Hi, try to follow the link at the end of the article and look for instructions on how to do that there.
June 2nd, 2009 at 7:14 am
i wonder if you do have a Flux meter sample circuit in this site??
June 2nd, 2009 at 9:49 am
Eason.. just follow this link http://elm-chan.org/works/lux/report.html and it will get you to the original project.