Patent ID: 6178048
Filing Date: 2001-01-23
Classification: G02B

Abstract:
An image-forming optical system for forming an image of an object,said image-forming optical system comprising a first prism and a second prism,said first prism being placed on an object side of said second prism,said first prism having, in order in which rays from the object pass, a first transmitting surface, a first reflecting surface, a second reflecting surface, a third reflecting surface, and a second transmitting surface,wherein said first transmitting surface and said third reflecting surface are an identical surface, and said first reflecting surface and said second transmitting surface are an identical surface,said second prism having an entrance surface, at least one reflecting surface, and an exit surface,wherein said first prism and said second prism each have at least one reflecting surface with a rotationally asymmetric surface configuration that corrects decentration aberrations.