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Buhl Optical Multiplexer
The Multiplexer We use "Buhl mobile multiplexers", and "Buhl Tyrone multiplexers" for the highest quality video transfers available.
Buhl optical systems form an intermediate "aerial" image from one of the source projectors. The television camera "looks" at this image in mid air, creating the brightest and most colorful image possible.
Explanation of Field Lens and Rear Projection Screen
Illustration A shows that without a field lens or a screen at the image plane, only the light coming through the very center of the image gets into the camera lens. The corners are not illuminated. Only a small circular field is visible.
Illustration B shows that when the image is projected onto a rear projection screen, it can be seen by the unassisted eye as well as the video camera, but there is considerable light loss due to the screen's bend angle. Image quality is lost due to grain in the rear projection screen
Illustration C shows that a field lens located at the aerial image directs light from all parts of the field lens into a small circle. When the camera lens is placed at this circle, the entire field is illuminated. This is the system we use for the highest quality image.
Unsolicited Customer Testimonial:
On behalf of my entire family I would like to thank you for what you do. you really make memories "come alive".
We were very concerned about entrusting someone with very old and precious film. There were reels of video from several past generations that were absolutely irreplaceable. Your care and consideration was greatly appreciated, thank you.
Because of the age of the 8mm and 16mm film, we were unable to view them on projectors. Without your equipment and skills to convert them to DVD, I'm afraid they would have been lost forever.
I can't begin to describe the joy these DVDs have brought our family.
