Automatic focus adjustment means

作者： Aoki Harumi , Itagaki Takuo

DOI:

关键词: Intensity (heat transfer) 、 Lens (optics) 、 Aperture 、 Focus (optics) 、 Mathematics 、 Optics 、 Image plane 、 Plane (geometry) 、 Mechanism (engineering) 、 Cylindrical lens

摘要: An image is formed on a plane by light passing through lens. The lens and the are movable relative to each other so as focus image. A self-scan type photoelectric element linearly scans intensity distribution of and, in response, provides an electrical signal used positioning mechanism that for maximizing bring into focus.