Stereoscopic Optical System
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United States of America Patent
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Feb 12, 2014
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Sep 7, 2012
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Abstract
A stereoscopic optical system includes: two objective optical systems arrayed parallel to each other with a space therebetween; two parallelogram prisms that bring optical images close to each other by respectively deflecting lights collected by the objective optical systems twice; an image pickup element arranged at image formation positions of the light fluxes collected by the objective optical systems to take the two optical images brought close to each other by the prisms; and a diaphragm member that blocks a portion of the light flux on at least one of an inner side and an outer side in a direction of the space at any position apart from a pupil position of each of the objective optical systems in a direction of an optical axis, wherein the diaphragm member is arranged on the inner side in the direction of the space, and satisfies a conditional expression L0−Ihy−W>Z0×sin θ.
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