| 摘要 |
PROBLEM TO BE SOLVED: To provide a Fourier transform lens in which the direction of an optical image are the front and rear sides of a lens are discriminated by a single lens when using the Fourier transform lens while being mounted in a camera. SOLUTION: In a Fourier transform lens attachable to and detachable from a camera wherein a desired optical image is observed in the state of observing through a point source, a molding portion matched to the shape of the optical image to be visually confirmed is provided in a base material. By watching the shape of the molding portion provided in the base material, the direction of an image in a photograph is known, so that the Fourier transform lens is mounted in the camera without making a mistake in its direction. The optical image is formed simultaneously with molding of the Fourier transform lens, thereby manufacturing the Fourier transform lens without giving a burden on manufacturing costs. COPYRIGHT: (C)2005,JPO&NCIPI
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