|
|
Filter
I used 6 filter to illustrate the
principles of additive and subtractive colour filtering. For the
filter I used samples of optical grade colour filters available for
free from RoscoLux. I picked the filter so that their transmission
spectrum closely matches the requirement of a red, blue, green,
magenta, cyan and yellow. From the RoscoLux line I used Light Red #
26, Daylight Blue # 65, Moss Green #89, Deep Pink #43, Cool Blue #66
and Medium Yellow # 10.
Each filter is mounted on a 5cm
diameter metal ring with two magnets attached to it. The magnets
make it possible to stack different combinations of filter rings on
the base and mount the lightpipe on top of the stack.
Budget
| Item |
Quantity |
Cost |
| PC power supply (5V, 1A) |
1 |
$30 |
| Variable resistor (min 1W) |
4 |
$12 |
| Nichia LED |
36 |
$72 |
| Resistors |
4 |
$1 |
| Circuit Board |
1 |
|
| Optical Lighting Film |
0.1sq
m
|
Sample from 3M |
| Radiant Mirror
Film
|
20sq cm |
Sample from 3M |
| Clear plastic tube |
20cm x 5cm dia |
Home Hardware sample |
| Magnets |
16 |
$8 |
|
|
|
| Total Cost |
|
$122 |
| |
