LCD Projector Lens

LCD Projector lenses cost hundreds to thousands of dollars so you need to make sure you are buying the right kind, otherwise you could be making a costly mistake. 

Having additional lenses on hand though also allows you to optimally project an image whether you are in a large conference room or a small one. 

Also, if you have the right lens, sometimes you can even include 3D technology into your classroom. 

It is much cheaper sometimes to just change the lens, than it is to have a separate projector for each room. 

A lightweight portable projector with just two different sized lenses can fill almost all of your projector needs. 

What LCD Projector Lens Do I Need? 

If you actually want to calculate the needed focal length of the lens you need here it is: 

Focal length = (distance to screen in feet*12) / (((image size in feet*12) / object size in inches) +1) 

Shop Around 

Because lenses are so expensive you should shop around and get quotes from three companies and compare them. 

The markup on these lenses is huge, so just by doing a little comparison shopping can save you hundreds of dollar on a lenses 
 

Below are few of the prices I found just by doing a quick search on the internet.  As you can see there is a wide price range due to the difference lens sizes I was quoted. 

3M Lenses (typically run between $1800 and $2500) 

Epson Lenses (typically run between $1000 and $3600) 

Hitachi Lenses (typically run between $1100 and $1600) 

HP Lenses (typically run between $1000 and $1700) 

InFocus Lenses (typically run between $1000 and $3600) 

Mitsubishi Lenses (typically run between $1500 and $2300) 

NEC Lenses (typically run between $800 and $2300) 

Panasonic Lenses (typically run between $2700 and $6200) 

Sharp Lenses (typically run between $500 and $1500) 

Sony Lenses (typically run between $2000 and $3200) 

ViewSonic Lenses (typically run between $1100 and $2000)