| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide good color retention performance by fiber optics bonding of an image forming device. SOLUTION: An image multiplication device 7 has an exhausted envelope having an input window 1 for receiving an incident light image and an output window 6 to which an output image is projected. An input color filter 2 assembled in the input window 1 has at least two parts for passing light of the first and second selected wave length range, and an color filter has at least two parts for generating light of the first and second selected wave length range. The input color filter 2 and the output color filter are made of a structurally colored core glass component forming the input and output windows 1, 6 of vacuum tight an solid glass together with clad glass 8, and the input and output windows 1, 6 form a cap at the edge of a tube.</p> |
