27. A Simple Measurement of Image Intensifier Brightness Distribution
نویسندگان
چکیده
منابع مشابه
Introduction to Image Intensifier Tubes
An image ultraviolet, visible light, or near infrared is projected onto the transparent window of the vacuum tube as shown in Fig. 1. The vacuum side of this window carries a sensitive layer called the photocathode. Light radiation causes the emission of electrons from the photocathode into the vacuum which are then accelerated by an applied DC voltage towards a luminescent screen (phosphor scr...
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Real-time radiography systems employing an image intensifier tube have poor resolution (2 to 4Ip/mm) compared to their film-based counterparts (10 to 20 lp/mm). Phosphor bloom, especially in the output conversion phosphor [1], is the principle cause of reduced resolution. Other systems achieve higher resolution but at the expense of additional hardware complexity [2] or use of expensive materia...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1993
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00003324615