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Infrared filter, anyone?
by rufo 15y ago
Infrared filter, anyone?
- joezydeco 15y agoMost CCD-based cameras alread have an IR filter film behind the lens. There are lots of people that hack them out to turn their webcams etc into night vision cameras.
- juiceandjuice 15y agoTrue night vision is a bit different than just adding near-infrared, unless you plan on using an IR illuminator. It's more like cranking the ISO to ridiculous levels, and if it's thermal the wavelengths are much much longer than any digital camera (or optics) can pick up. In any case, the first poster is right, an additional IR filter would remove this.
- joezydeco 15y agoMy point was that consumer CCD cameras filter out short-wavelength IR to enhance the image, so how does the Apple patent expect to get around that without removing the filter and making the visible light camera worse?
- rufo 15y agoI don't think Apple has an IR filter; IR blasters show up as bluish-white - handy for testing remote controls.