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日本广播技术协会研究所和日立公司一起研制成的saticon[注1]图象摄象管是一种分辨率高、灵敏度高、晕光小和惰性低的高性能电视摄象管,它的这些优异特性是由硒、砷、碲非晶态半导体二极管所决定的。本文着重阐述最近发展的saticon—Ill摄象管靶面和有中间电极的新型二极管电子枪的工作原理。近年来,人们试图用固体成象器件最终代替真空成象器件的设想和实施,虽然也有许多新型固态图象摄象器件涌现,某些固态传感器,如800×800 CCD的性能已十分接近真空管型的成象质量,但是,其周边电路复杂,相应价格昂贵,目前尚未能普及推广。对于图象质量要求十分高的场合中,尤其在广播电视演播室工作,真空管型的摄象器件还将继续充当重要的角色。长期来,人们熟悉于三硫化二铮、硒化镉、氧化铅等光导靶材料的摄象管应用,自从硒砷碲电视摄象管闻世以后,它已成为电视摄象重要器件的强劲竞争者,博得了人们的极大关注。近来,为了增加摄象机的多功能,实现VTR/CAME-RA和电源的一体化,使ENG摄象机与多功能的16m/m电影摄象机媲美,NHK曾用2/3英寸saticon管和1/2英寸磁带录相机配合,图象质量已超过3/4英寸的常规,不仅如此,随着电视广播技术的发展,硒砷碲摄象管除了用于演播的商业摄象机外,逐渐延伸到销售数量十分大的家用录相机领域,使它更具有深远的意义。为了充分理解该器件的优良性能和正确应用,下面就其靶面工作原理和有中间电极的新型二极管电子枪结构作一概述。
The saticon [1] video tube, developed by the Japan Broadcasting Technology Association Institute and Hitachi, is a high-performance video tube with high resolution, high sensitivity, low halo and low inertia, and these Excellent features are selenium, arsenic, tellurium amorphous semiconductor diode decision. This article focuses on the working principle of the recently developed saticon-Ill tube target and new diode-based electron guns with intermediate electrodes. In recent years, attempts have been made to eventually replace the design and implementation of vacuum imaging devices with solid imaging devices. Although many new solid-state imaging devices have emerged, the performance of some solid-state sensors, such as an 800 × 800 CCD, has been very close to that of a vacuum tube Image quality, however, its peripheral circuit complexity, the corresponding expensive, so far not yet universal promotion. For applications where image quality is very demanding, especially in broadcast television studios, vacuum tube type camera devices will continue to play an important role. For a long time, people are familiar with the application of phototools for photoconductive target materials such as Trisodium trisulfide, cadmium selenide and lead oxide. Since the selenium, arsenic and tellurium television cameras became available, they have become a strong competitor for important video camera devices Who won the great attention of people. Recently, in order to increase the versatility of the camera and achieve the integration of the VTR / CAME-RA with the power supply, the ENG camera was comparable to the multifunctional 16m / m movie camera. The NHK used a 2/3 inch saticon With 1/2 inch tape recorders, image quality has more than 3/4 inches of conventional, not only that, with the development of television broadcasting technology, selenium, arsenic and tellurium camera in addition to the studio for commercial video cameras, Gradually extended to the sale of a very large number of home video recorders, making it more far-reaching significance. In order to fully understand the excellent performance of the device and the correct application, the following is a summary of the principle of its target surface and the structure of a new diode electron gun with a middle electrode.