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Can several fibers gives the same amount of light?
No, some fibers do not give similar amount of light. If a no. of fibers or light guides are coupled similar illuminator, this is physically impossible that each receives similar amount of light and so transmit this. The spot or tack formed through a reflector lamp at the focus point or screen is not fully homogeneous; it is to say that this does not have the same quantity of light in all point of its surface. That problem is sometimes minimized with mixing the fibers at the ordinary end (a process known "randomizing") but this can never be made totally even.
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