Author Topic: +++++++ My IR pen +++++++  (Read 3734 times)

Offline chayut350d

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on: January 28, 2009, 07:22:52 AM
Hi i just finish my IR Pen and i want to share and i want to know your comment.

i use 2 of AAA battery inside and i use Osram 3V IRLED i think it's better than vishay tsal 6400 because the angle view is +-25 but  osram angle view is +-80

for more information you can contact me at [email protected] for instructor of it

thank for comment please comment

Offline benpaddlejones

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Reply #1 on: January 28, 2009, 05:16:12 PM
Very nice pen, I'm a big fan of the shrink wrap too, gives a nice fell and grip to the pen.

I did some extensive research on the Osram IR-Leds what I found was:
- Some are quoted as +-80 degree (160 degree) viewing angle by the sellers, when they are actally an 80 degree (+-40) viewing angle when you read the datasheet.
- Quite heavily dispersed over the wide VA and have poor tracking at distance
- Gives of a really wide spectrum of IR, with an average of 940nm, of which not much is actaully in the 940nm bandwidth
- Very expensive
- Easily under powered 2x AAA will quickly drop voltage to 2v
- They need 2x batteries adds to the weight and size of the IR-Pen

I'm keen for your expereince on the tracking at distance etc. If you have very positive results i might ned to re-research.

Ben :-)

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