IR diode laser

Hello.
I’m looking for infrared laser diodes that are small, cheap and low power (<5mW).

Some models to recommend?

With regard to its sensor, if i wanna reduce false readings (as there are several IR sources in the homes and offices) , could I insert the IR sensor into a black tube that looks in the direction of the laser?

Thank you

What do you want to do. Beam break, remote control, data, ?

Maybe easier to use narrow beam IR diodes.

Leo..

Wawa:
What do you want to do. Beam break, remote control, data, ?

Maybe easier to use narrow beam IR diodes.
https://www.vishay.com/docs/84240/vsly5940.pdf
Leo..

I've a tiny robot wich will mount a ir receiver and that mustn't go beyond an imaginary line (so the line projected by the laser diode).

EXAMPLE

The IR led you posted is quite interesting as it can act a bit like a laser, having an angle of half intensity of 3°.
Because for my purposes i need a good straight line i thought about this one:

But i really appreciate the Led you posted because i need to work with tiny, tiny, electronicts as possible.

If my laser pointer is anything to go by, it's a really narrow beam and a pretty tiny overall device.
But what I don't understand: the laser is to act as barrier for the robot, so I expect it to be mounted somewhere not on the robot, and not too much of a space restraint there.

Using a visible light blocking filter to increase IR sensitivity in the presence of stray illumination

wvmarle:
If my laser pointer is anything to go by, it's a really narrow beam and a pretty tiny overall device.
But what I don't understand: the laser is to act as barrier for the robot, so I expect it to be mounted somewhere not on the robot, and not too much of a space restraint there.

The receiver will stay in the robot, not the laser emitter.
The robot move along a path in such a way the sensor looks against the transmitter.

For my purposes i need a small, small, scale diode laser. Don't know if an SMD manufactured IR laser diode exist :open_mouth:

MarkT:
Using a visible light blocking filter to increase IR sensitivity in the presence of stray illumination

Have common IR sensor inbuilt light filtering?
Such as the one used for proximity sensoring.

These are pretty small
http://www.mpja.com/Mini-LASER-Head-635nm-5mw/productinfo/19566+LZ
On sale too!
http://www.mpja.com/LASER-Diode-Red-Crosshair-Pattern/productinfo/33029+LZ

CrossRoads:
These are pretty small
Mini LASER Diode Module, 635nm, <5mw | MPJA.COM
On sale too!
http://www.mpja.com/LASER-Diode-Red-Crosshair-Pattern/productinfo/33029+LZ

Be careful friend, you posted red dot laser (650nm) not infrared (+- 750nm)

:wink: