IMAGING OPTICAL SYSTEM, AND PROJECTION-TYPE IMAGE DISPLAY APPARATUS AND IMAGE PICKUP APPARATUS USING THE SAME
Imaging optical system including a first optical unit (1) having positive refractive power for making an image at the enlargement-side of the imaging optical system and an intermediate image (3) conjugate to each other, and a second optical unit (2) having positive refractive power for making the in...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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