Re: Green/Red Light Reflection From TV Screen

Al, 
I can't say for sure, but I believe you are describing the reflections due to the anti-reflective 
coating sometimes applied to the front of TV sets.  It is designed to minimize the reflection 
from external sources, such as the incandescent light you mentioned.  These coatings are 
designed to diffuse the light so it does not create a distracting focused reflection from the 
screen.  There are many different types of coatings, but I have seen something similar to the 
response you describe.   The coatings typically have chromatic (color) sensitivity, so that 
there are different diffusion patterns for different colors - similar to a rainbow.  You might 
even find that there are other colors represented (not just green and red) but that they are 
harder to see (For example the "no reflection" space might actually be blue/violet, but it is 
dim, and therefore hard to see).  There may also be a pattern in the screening process that 
they use to put the coating on the screen that could cause some of this.  

An alternative explanation, if there is no coating, is that the external light is hitting the pixel 
elements through the glass.  Since they are in a regular pattern, they may be reflecting 
different colors at slightly different angles preferentially (like a rainbow) giving the color 
effect.  In this case, the red and green are probably coming from the red and green dyes 
used to color the corresponding pixels.  In which case (similar to above) you can probably 
also find a blue reflection caused by the blue pixels.  It may be off-axis from the red and 
green ones.