Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Modulation transfer function of image tube lenses

Not Accessible

Your library or personal account may give you access

Abstract

The modulation transfer function (MTF) of the proximity focusing biplanar lens and the sharp focusing electrostatic and electromagnetic lenses is derived and presented. It is shown that for a Maxwellian emission energy distribution, the MTF of the biplanar lens is MTF exp(−4π2/VsL2f2), where L is the screen to cathode separation in mm, f is the spatial frequency in lp/mm, Vs is the screen voltage, and is the voltage equivalent of the most probable emission energy. For a cosine distribution, the MTF of the biplanar lens is MTF = exp(−7π∊/VsL2f2). The MTF of sharp focusing image tube lenses is MTF = exp(−0.06π22M2f2/Ec2), where Ec is the cathode field strength in volts per mm and M is the magnification. In general, the MTF of image tube lenses is MTF = exp[−(πρf)2], where ρ is the focusing error coefficient of a particular lens.

© 1977 Optical Society of America

Full Article  |  PDF Article
More Like This
Image transfer properties of proximity focused image tubes

Edward H. Eberhardt
Appl. Opt. 16(8) 2127-2133 (1977)

Numerical calculation method of modulation transfer function for preproximity focusing electron-optical system

Ling Ren, Feng Shi, Hui Guo, Honggang Wang, and Benkang Chang
Appl. Opt. 52(8) 1641-1645 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (18)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved