LASER LIGHTING - BUYES GUIDE

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1. STEPPER MOTOR LASER

2. SCANNING LASERS

3. ILDA SCANNING



INSIDE THE LASER PROJECTOR

Most of the lasers sold on eBay use stepper motors which have large mirrors attached to reflect the laser beam on the X and Y axis. The stepper motor moves the mirrors at very small angles projecting the laser beam. This speed is about 3-4K and cannot reproduce clear graphics or patterns. They usually are limited to unintelligible lines projected against the far wall. The beam effect from stepper motors when compared with scanning lasers clearly inferior.


BUYER EDUCATION

Laserists should be familiar with the stepper motor equipped lasers and how they are often old recycled technology cranked out en mass from China.

See the interesting video presentation at this link;


STEPPER MOTOR SHORTFALLS

The beam appears jerky and does not have smooth transitions

Programs are limited

The stepper motor is usually noisy

The stepper motor is usually quite large and add cosiderable weight to the unit

The stepper motor usually has poor quality reflective glass

They are cheap and there are companies that re-use second hand motors and sell as new in their lasers

SO WHAT DO SCANNERS DO?


The laser projector is the heart of a graphics system. It contains the galvanometer scanners and scanner amplifiers, which together move the beam FASTenough to create graphics. It also contains an intensity device that blanks and/or colors the laser beam. This section discusses these two vital parts of a projector.

 There can be other parts, such as beam tables and lumia special effect devices. However.

This brief introduction is aimed to stimulate intereset in scanners. It is a moderately intensive subject with debate on the ILDA laser scan speed test and is good reading if you you are thinking of moving eventually into laser graphics.



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