Optical instrument for producing an image to be viewed by an observer and comprising an optical system producing the image of an object that is viewable by an observer at the exit pupil and a diffractive element located in an image plane and producing an array of exit pupils that are perceivable as a single , enlarg...

A viewing apparatus for producing a stereoscopic image for an observer the viewing apparatus comprising : first and second video projectors for projecting respective ones of first and second video images of an object the first and second images being different images which are one or both of spatially and angularly ...

An optical instrument for producing an optical image to be viewed by an observer , the optical instrument comprising : an optical system for producing an optical image of an object which is viewable by an observer at an exit pupil; and a diffractive element located at an image plane of the optical system for produci...

A viewer for viewing an object under magnification the viewer comprising : an objective lens for producing an image of an object located at an object plane and having a radial extent defined by an aperture stop; a partially transmissive reflector for allowing transmission of light therethrough from the objective len...

An assembly for use in a microscope having an objective assembly including an aperture. The assembly comprises a lens and a beamsplitter. The lens and the beamsplitter are configured to form a respective aperture image on each of two optical paths. The assembly further comprises, on each optical path, a stop structu...