Signal-to-noise ratio improvement in scanning television optical microscope

• Autorzy: Prudyus I. , Shkliarskyi V. , Hudz B. , Rehush A.
• Języki publikacji: EN

Abstrakty

EN

Scanning television optical microscope is designed to investigate microscopic objects, larger than 0.1 micrometers. To illuminate microobject with this microscope there is used a high resolution cathode ray tube. Low illumination of the tested microobject lets to explore living microorganisms in real time. The current microscopic image has low contrast. To increase image contrast it is necessary to increase microscope sensitivity. The main sources of noise in scanning television optical microscope are: 1) composite video shaper; 2) photomultiplier tube; and 3) scanning cathode ray tube. Detailed analysis of noise sources in video signal of the microscope is presented in the paper. Equations describing the sources are given. Dependencies are plotted and discussed.

Słowa kluczowe

EN

scanning television optical microscope; cathode ray tube; noise; photomultiplier tube

• Wydawca: Wydawnictwo PAK
• Czasopismo: Measurement Automation Monitoring
• Rocznik: 2015
• Tom: Vol. 61, No. 8
• Strony: 406--409
• Opis fizyczny: Bibliogr. 7 poz., wykr., wzory

Twórcy

autor

Prudyus I.

• Lviv Polytechnic National University, Institute of Telecommunications, Radioelectronics and Electronic Engineering, 12 Stepan Bandera St., 79000 Lviv, Ukraine

autor

Shkliarskyi V.

• Lviv Polytechnic National University, Institute of Telecommunications, Radioelectronics and Electronic Engineering, 12 Stepan Bandera St., 79000 Lviv, Ukraine

autor

Hudz B.

• Lviv Polytechnic National University, Institute of Telecommunications, Radioelectronics and Electronic Engineering, 12 Stepan Bandera St., 79000 Lviv, Ukraine

autor

Rehush A.

• Lviv Polytechnic National University, Institute of Telecommunications, Radioelectronics and Electronic Engineering, 12 Stepan Bandera St., 79000 Lviv, Ukraine

Bibliografia

• [1] Van der Ziel A.: Noise. Sources, Characterization, Measurement. Prentice-Hall Electrical Engineering Series. Englewood Cliffs, New Jersey, March, 1971.
• [2] Hrytskiv Z., Shkliarskyi V.: Determination of the luminance of CRT for scanning optical microscope based on noise. Bulletin of Lviv Polytechnic National University. Radioelectronics and Communication, no. 428, 2001, p. 54 - 58 (In Ukrainian).
• [3] Hrytskiv Z.: Television–computer scanning optical microscope: foretime, nowadays and the near future. Telecommunication іn Modern Satellite, Cable and Broadcasting Services TELSICS’2005: 7-th Int. Conf. Nis, Serbia and Montenegro, September 28-30, 2005, p. 243-252.
• [4] Shkliarskyi V.: Television scanning optical microscopy: theory and practice. A monograph, Lviv Polytechnic, 2010, p. 456 (In Ukrainian)
• [5] Shkliarskyi V. I.: About the possibility of formation the amplitude-frequency response for photomultiplier amplifier. Bulletin of State. Univ. "Lviv Polytechnic": Theory and design of semiconductors and electronic devices. 1998, no. 343, pp. 24-25 (In Ukrainian).
• [6] Vaskov O. T., Mamontov G. M., Potashnikov A. K., Tkach S. E.: Scanning devices on high resolution CRT. Publishing House "Nauka", Siberian Branch, Novosibirsk, 1978, pp. 138 (In Russian).
• [7] Wilson T.: Theory and Practice of Scanning Optical Microscopy. In T. Wilson, C.J.R. Sheppard – London: Academic Press, 1984. – 213 p.