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raspberry pi noir
panning to set up a rpi 'noir' camera soon - it comes with no IR filter.
Question: how about an inexpensive source for an IR blocking filter AND an IR passing, visible blocking filter? |
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raspberry pi noir
On 2014-12-01 15:41:03 +0000, ray carter said:
panning to set up a rpi 'noir' camera soon - it comes with no IR filter. Question: how about an inexpensive source for an IR blocking filter AND an IR passing, visible blocking filter? What do you call inexpensive? This is always a good place to start. http://www.lifepixel.com -- Regards, Savageduck |
#3
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raspberry pi noir
On Mon, 01 Dec 2014 09:17:38 -0800, Savageduck wrote:
On 2014-12-01 15:41:03 +0000, ray carter said: panning to set up a rpi 'noir' camera soon - it comes with no IR filter. Question: how about an inexpensive source for an IR blocking filter AND an IR passing, visible blocking filter? What do you call inexpensive? This is always a good place to start. http://www.lifepixel.com Hopefully, less than the Pi! |
#4
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raspberry pi noir
In article , ray carter
wrote: panning to set up a rpi 'noir' camera soon - it comes with no IR filter. Question: how about an inexpensive source for an IR blocking filter AND an IR passing, visible blocking filter? ebay, but quality may not be the best. |
#5
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raspberry pi noir
On 01/12/2014 15:41, ray carter wrote:
panning to set up a rpi 'noir' camera soon - it comes with no IR filter. Question: how about an inexpensive source for an IR blocking filter AND an IR passing, visible blocking filter? IR blocking filter aka hot mirror you can get from amateur astronomy suppliers although it probably will cost more than the rpi. http://www.telescopehouse.com/acatal...25____510.html Wratten 87 is the usual choice for near IR long pass although you can get custom colloidal glass filters at any cutoff in steps of 10nm. (for a price) http://www.edmundoptics.co.uk/optics...s-filters/1918 Cheap IR pass filters are easier the unexposed tail of slide film will block all visible light and pass near infrared pretty well. If you have a long enough piece it is interesting to put it across your eyes and wait until they adapt to the low light levels. You will after about a minute get to see the world again in pseudo false colour near IR. Green foliage looks very bright and sky looks much darker. -- Regards, Martin Brown |
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raspberry pi noir
On Tue, 02 Dec 2014 09:44:54 +0000, Martin Brown wrote:
On 01/12/2014 15:41, ray carter wrote: panning to set up a rpi 'noir' camera soon - it comes with no IR filter. Question: how about an inexpensive source for an IR blocking filter AND an IR passing, visible blocking filter? IR blocking filter aka hot mirror you can get from amateur astronomy suppliers although it probably will cost more than the rpi. http://www.telescopehouse.com/acatalog/ Revelation_IR_Blocking_Filter_1_25____510.html Wratten 87 is the usual choice for near IR long pass although you can get custom colloidal glass filters at any cutoff in steps of 10nm. (for a price) http://www.edmundoptics.co.uk/optics...longpass-edge- filters/optical-cast-infrared-ir-longpass-filters/1918 Cheap IR pass filters are easier the unexposed tail of slide film will block all visible light and pass near infrared pretty well. If you have a long enough piece it is interesting to put it across your eyes and wait until they adapt to the low light levels. You will after about a minute get to see the world again in pseudo false colour near IR. Green foliage looks very bright and sky looks much darker. It seemed the most cost effective solution was to buy a NOIR camera plus a regular camer plus an IR pass filter - still was only around $70. |
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