uScope head problems

uScope head top view.
Both red laser (red) and white light from the fiber (yellow) reach the specimen
and are reflected into the video camera (right side).




Baffles in the tube above the objective.




uScope head with mirror sled in right-most position
for binocular eyepiece use with transmitted light 
from condensor.





uScope head with mirror sled in center position
for binocular eyepiece use with reflected light.
The laser path is blocked.




The reflected-light-beamsplitter on the mirror sled
showing a reflection of the metal backside.




The view down the uScope tube shows a reflection of
the beamsplitter off of the large back window of the 10x objective.
This is a problem...




A view of the back wall behind the reflected-light-beamsplitter on the mirror sled.




A piece of black paper was used to block light
on the back side of the reflected-light-beamsplitter 
on the mirror sled to eliminate the reflection there.




The view down the uscope tube is no longer blocked
by the reflection. Epi-illumination spot can be seen
on the target specimen with the objective removed.




uScope head with mirror sled in left-most position.
In this position the binocular eyepieces cannot be used.
Instead the fiber light illuminates the specimen 
from above and the reflected light is sent into 
the video camera with the beamsplitter-sled in the
shown position. Laser light can also reach the
specimen but the beamsplitter sled is typically
moved to the left during Raman spectroscopy to 
allow maximum laser light to reach the specimen
while blocking the fiber light from reaching the specimen
and from reaching the video camera.