| 摘要 |
#CMT# #/CMT# The device has a lens assembly (M1) e.g. Mangin mirror, operating by reflection and equivalent to a concave mirror, and another lens assembly (M2) operating by reflection and equivalent to another mirror. The assembly (M1) forms a real image from a luminous object to infinity at its focus, and the assembly (M2) forms an inversed real image from the former image. A third lens assembly (E3) i.e. eye-piece, forms a third image from the latter image at infinity, where the third image is in a same direction as that of luminous object, exit pupil of system and an input pupil image of a device. #CMT#USE : #/CMT# Afocal optical device for use in front of an optical lens or a night vision binocular body to multiply magnification of the lens. #CMT#ADVANTAGE : #/CMT# The lens assembly acts like an image rectifier, such that a magnify image having same orientation as that of lens is observed. The exit pupil is found outside the third lens assembly, such that pupil conjugation is formed with other lens. The architecture of the device reduces encumbrance of the device. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of an afocal optical device placed in front of lens. M1, M2, E3, E4 : Lens assemblies. |
