SENIOR PROJECT
			  INTERACTIVE LASER GRAPHICS
	     ====================================================

				 RODNEY RIECH
			   r.riech@worldnet.att.net



OBJECTIVE:

		The Interactive Laser Graphics array converts user input
into a binary signal, this signal is then converted to an analog signal
that is output to a series of laser scanners or galvanometers. The
scanners are designed to move a specific number of degrees for each new
voltage value they receive. This voltage is changed to a new value that
is predetermined by a program loop. The constant changing of these
voltages at a given frequency cause the scanners to deflect a projected
laser beam. The change in angle of deflection is looped by the
specified program, this looping causes the desired pattern to be
projected onto the medium. A program can be written to display any type
of graphics or text. With a large collection of programs to access, the
laser image would appear to interact with the user or observers.


APPLICATIONS:

		The Interactive Laser Graphics array described above is
intended as instructional entertainment. The laser animation can be used
as comic relief or as an instructional media. A company could use the
ILG. for many applications. For instance the ILG. could instruct
employees on technical procedures or it could be used to direct employees
in the event of a fire. An animated character could be used as a
teachers aid, making the education process more fun.


COST:

		$500.00      Estimation based on a basic prototype cost.


INTRODUCTION:

		The Interactive Laser Graphics or ILG project has
numerous applications. These applications include but are not limited
to the following;


Education         
		As an educational tool, the ILG Array could be used to
aid in the educational processes of students of all ages. Child
applications could include the projecting of numbers or letters, even
various shapes to represent those letters. Such as an apple for the
letter A. The ILG could be very useful in the explanation of matter
older students.


Advertising
		The ILG would be ideal for advertising at public
functions such as concerts, indoor sporting events, etc. A laser
advertisement during a brief time-out at a professional basketball game
would definitely demand the attention of the crowd. Imagine the image
of a Coca-Cola projected on the scoreboard in front of thousands of
thirsty fans. What better way to catch the eye of potential customers?


Entertainment
		Entertainment is another area in which the ILG could be
applied. For example, a rock and roll band could use the ILG to produce
various images in time with their music or shoot the beams through the
smoky concert hall during their show. This would, with out a doubt, put
more theatrics and showmanship into any concert.


Just for fun
		Probably the best use for the ILG is just for the fun
of it. You can have hours upon hours of fun creating new and exciting
patterns. You, along with friends and family, will be amazed at some of
the creations possible with the ILG. For example by experimenting with
various mediums, such as prisms to split the beams or smoke to show the
lasers path, you can produce very unexpected results.


			It is great for parties too!


Circuits:
		I have designed many circuits for various applications,
but the use of these circuits would depend on the needs of the user.
These circuits include a microprocessor mother board, a sine wave
generator, a dual binary counter, a sample control card, a keyboard
interface, and a DAC amplifier.


Control Program:
		I have also written a sample program for the ILG. The
sample program is used as a means of initiating power to the lasers at
various times. This will produce a miscellaneous array of projected
patterns from multiple galvanometers. This sort of effect would
typically be found at a concert.