Lowtech question :) Overhead projectors. . .

[episodic]

Are there overhead accessories that will let you project opaque paper? Meaning something that with mirrors or something will let you just project any old paper.

TIA

 

[KillerCharlie]

You mean using a regular old overhead machine? I don't think so... and if there was, it'd probably be just as expensive as buying one of the modern digital overhead projectors that use cameras.

 

[episodic]

Nothing eh.

What about the modern ones that use cameras? Anyone got links to those with prices?

 

[imported_Tick]

Unless you've got a 30,000 lumin bulb around, you can't project through paper.

 

[Linux23]

Originally posted by: Tick
Unless you've got a 30,000 lumin bulb around, you can't project through paper.

LOL

 

[So]

Originally posted by: Tick
Unless you've got a 30,000 lumin bulb around, you can't project through paper.

Hey, let me project this report...<fwoomp!>

<picks up ashes>
...That was my only copy!

 

[Evadman]

They make ones that project plain paper IIRC, but the bulb is above the paper, not below it. one of my prof's in college had one.

 

[Fraggable]

They're called document imagers, and start at $2500 or so IIRC. Epson makes some.

 

[FrustratedUser]

Originally posted by: KillerCharlie
You mean using a regular old overhead machine? I don't think so... and if there was, it'd probably be just as expensive as buying one of the modern digital overhead projectors that use cameras.

Ohh yes there is. They might not be available anymore. 50's tech for sure.

 

[episodic]

Originally posted by: FrustratedUser

Originally posted by: KillerCharlie
You mean using a regular old overhead machine? I don't think so... and if there was, it'd probably be just as expensive as buying one of the modern digital overhead projectors that use cameras.

Ohh yes there is. They might not be available anymore. 50's tech for sure.

Anyone else know anything about this?

 

[ScottMac]

You're talking an "Opaque Projector" - with lights & mirrors.

Document imagers (something like an "Elmo") uses a camera.

If you google "opaque projector" you'll get some hits lie tis:

http://www.audiolinks.com/ClassroomAV.shtml

Have fun

Scott

 

[indd]

Look up "document camera" or "digital presenter". It's what a few people in the post have been suggesting, but I think those search terms will yield more results.

What they do is basically take a picture, and output the video via composite, s-video or RGB connections. So note you'll have to have a TV, monitor or projector to finish out the system. They show 3d objects, transparencies as well as opaque paper. There are ones that can hook up via USB so you can kind of use them like scanners.

Some big brands out there are that I've seen in person are Elmo, Canon, JVC. I've seen some Aver ones in action, and they worked pretty well for much less than $1000. There are other companies out there as well that make these things. You're looking at probably anywhere from $300-3000 on one btw.

A quick google search also showed Toshiba making a projector with an integrated doc cam.

Overall I don't consider these too "low-tech" as we use them in about 80 of our classrooms. Some teachers still like the old overheads, but to me it's just whatever works out better for them. Most departments don't have a lot of money, so there's something to be said for spending only $200 for something that can project a lot of information (using transparencies) and can be pointed anywhere pretty.

 

[FrustratedUser]

Google search

 

[FrustratedUser]

Originally posted by: episodic

Originally posted by: FrustratedUser

Originally posted by: KillerCharlie
You mean using a regular old overhead machine? I don't think so... and if there was, it'd probably be just as expensive as buying one of the modern digital overhead projectors that use cameras.

Ohh yes there is. They might not be available anymore. 50's tech for sure.

Anyone else know anything about this?

eBay link to explain what I mean.