摘要:
In a projecting apparatus which focuses the image of an object on an intermediate mirror through a lens array and finally projects the reflected image onto a projection plane again through said lens array, a polarizing beam splitter is provided between the object plane and the lens array to reduce the light loss and to compactize the apparatus.
摘要:
An X-ray exposure apparatus includes a stage for holding a mask having a pattern for circuit manufacturing, a stage for holding a wafer to be exposed to the pattern of the mask with X-rays, and a reflection reduction imaging system, disposed between the mask stage and the wafer stage, including a reflecting mirror arrangement, containing at least three, but not more than five, reflecting mirrors coated with multi-layer films for receiving X-rays from the mask and directing them to the wafer to expose the wafer to the pattern of the mask with the X-ray in a reduced scale.
摘要:
A compound eye optical system having a variable magnification function includes a first imaging element array having a plurality of imaging elements of the same focal length at an equal pitch, a second imaging element array having a plurality of imaging elements of the same focal length arranged at a pitch different from that of the first imaging element array, the second imaging element array disposed more adjacent to the image side than the first imaging element array, and means for varying the imaging magnification of a composite optical system comprising the first and second imaging element arrays.
摘要:
The present invention includes asymmetrical Fourier transform lens systems for use in performing optical Fourier transforms. The present invention also treats the application of an aberration theory to the design of such lens systems. The aberration theory leads to the conclusion that the lens systems not always necessitate symmetrical configuration and to a provision of necessary conditions which the resulting lens systems should satisfy. One embodiment of the first subsystem comprises at least three lens components each of which is composed of at least two lens elements. In a complete optical Fourier transform lens system, the second subsystem of the same construction as that of the first subsystem is arranged in longitudinally inverted relation thereto.
摘要:
A copying apparatus comprising a flat stationary original support table, at least a movable mirror for scanning the surface of an original placed on said original support table, and an imaging optical system adapted for focusing the light beam from said movable mirror onto a photosensitive member and capable of compensating the change in the light path length from said original support table to the photosensitive member resulting from the displacement of said movable mirror while maintaining a constant image magnification.
摘要:
A scanning device for scanning a flat scanned surface by means of a rotating or rotatively vibrating deflector. The scanning device is provided with a rotational asymmetric image forming optical system disposed between the deflector and the scanned surface for forming an image of the scanned surface at a substantially equal distance from the deflecting surface of the deflector in the plane defined by the path of movement of the normal to the deflecting surface of the deflector in accordance with the rotation thereof.
摘要:
A light beam scanning device provided with a rotationally vibrating deflector having at least two deflective and reflective surfaces, a scanning surface subjected to scanning operation with light beam deflected by the deflector, an image-forming optical system interposed between the deflector and the scanning surface to focus the light beam from the deflector onto the scanning surface, and a light source section which emits light beam to the deflector, in which device a first deflected light beam plane to be formed by the deflected light beam immediately before entering the image-forming optical system at the forward movement of the deflector is made parallel with a second deflected light beam plane to be formed by the deflected light beam immediately before entering the image-forming optical system at the return movement of the deflector, and the deflecting direction of each beam to be deflected by the first deflected light beam plane and the second deflected light beam plane is made identical.
摘要:
Optical scanning device of this invention includes an optical source to produce light rays, means for deflecting light rays toward a predetermined direction, a surface to be scanned by the deflected light rays, a single lens disposed between the deflecting means and the surface to focus the deflected light rays on the surface to be scanned, a partial optical system consisting of said deflecting means and the single lens having means to move light rays on the surface at a constant speed.
摘要:
A prism anamorphic optical system is disposed in the path of deflected beam from a rotatable polygonal mirror or a galvano-mirror. This prism anamorphic optical system includes at least two prisms, so that different amounts of displacement of the deflected beam at each angle of deflection and in a direction perpendicular to the direction of deflection caused by the first of the prisms are corrected by the second and subsequent prisms, as viewed from the incidence side. Thus, a straight scanning line may be obtained.
摘要:
A circuit pattern surface curving in correspondence with the surface shape of a ball-like semiconductor device material such as a silicon ball is formed in a reticle. A resist-applied surface of the device material is so exposed as to move the ball-like semiconductor device material close to the circuit pattern surface. In this manner, a circuit pattern is formed on the surface of the ball-like device material.