[Laser] Palm for laser comm

Sat, 26 Jan 2002 21:45:12 -0500

Hi Mike-
Also, for these types of devices to be considered IrDA compliant, the
specification ( http://www.irda.org/standards/standards.asp ) calls for
between 30cm and about 2 meters of communication distance. Power consumption
is really a big objective with these devices. One or more lenses may allow
the device to remain IrDA compliant - taking into account that there is an
emitter and a separate receiver behind the deep red lens on the device,
though they are pretty close together. . . .

----- Original Message -----
From: Mike <[email protected]>
To: <[email protected]>
Sent: Saturday, January 26, 2002 2:42 AM
Subject: Re: [Laser] Palm for laser comm

> Hi Jim,
>
> The reason for the range of Palm Pilot being a meter or so, is that the IR
> beam has quite a wide beamwidth, thus spreading the IR power over a large
> area. (This is done to alllow easy alignment of two devices.)
> You can't use a laser pointer with the Palm since the wavelength of the
> Palm's IR operates at about 850nm, the laser pointers operate at about
633nm
> or 670nm.
> You can, however, extend the range of the Palm by using one or two lenses.
> Our company designs and manufacture IR links that operate upto 4km (2.5
> miles). www.redlinesa.com
> Happy experimenting.
>
> Regards,
> Mike Moyes
> [email protected]
> Tel. +27 11 466 2130
> Fax +27 11 466 2349
> Cel +27 82 479 7242
> ----- Original Message -----
> From: "n9jim" <[email protected]>
> To: <[email protected]>
> Sent: Saturday, January 26, 2002 4:27 AM
> Subject: [Laser] Palm for laser comm
>
>
> > > Does anyone knows a setup using Palm Pilots and lasers for
communication
> > > purposes?
> > > (In fact the own PDAs use IR communication, but what I'm thinking
about
> is
> > > the possibility to connect this IR interface to a laser pointer and
> extend
> > > this way the communication range of two Palms - a kind of "Laser
> converter
> > > for PDAs")
> > > 73 de PY2 ANE, Orlando!
> > >
> > Posted for Orlando.
> >
> >
> > Jim
> > N9JIM/6
> >
> >
> >
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>
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