Author/Authors :
Yamagishi، نويسنده , , Toshio and Nanba، نويسنده , , Masakazu and Takiguchi، نويسنده , , Yoshiro and Kubota، نويسنده , , Misao and Okazaki، نويسنده , , Saburo and Kato، نويسنده , , Tsutomu and Tanioka، نويسنده , , Kenkichi and Hirai، نويسنده , , Tadaaki and Takasaki، نويسنده , , Yukio، نويسنده ,
Abstract :
We have developed the 18-mm-diameter all-electrostatic Super-HARP camera tube for high-performance handheld HDTV cameras. In designing its electron optics, we focused on high resolution and a wide dynamic range. Through experiments and numerical analysis, we have optimized the beam-limiting aperture of the diode-gun to enlarge the dynamic range, and the shape and arrangement of the pattern electrodes in the focusing and deflection system to improve the resolution. A prototype tube exhibited a dynamic range of at least 800% and maximum resolution of more than 1400 TV lines. The new HDTV camera tube thus achieves a good balance of high resolution and wide dynamic range while being compact.
