On Sat, 18 Oct 2008 23:51:49 -0700, you wrote:

>fig.11 from datasheet
>http://www.vishay.com/docs/82187/tsop362x.pdf
>is the answer for transmission LED wavelenght (you can't speak about
>bandwith here because an IR LED has a bandwith of 10-20nm)
>and fig.5 for the max frequency modulation
>
>In direct sunlight almost sure will not work, will be blinded by the sun.
>You need an extra black or blue lense in front of it.

These sensors already have a black IR-pass filter as the case material - the sun has plenty of NIR
content so filtering won't help much  - the only solution is to shade the sensor so direct sunlght
doesn't hit it. 
  

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