Integrated electrochromic aperture diaphragm

2014 ◽  
Author(s):  
T. Deutschmann ◽  
E. Oesterschulze
Keyword(s):  
Aperture Diaphragm

Application of a Warm Aperture Diaphragm in Cooled Small-Format Matrix Photodetectors

2020 ◽  
Vol 56 (6) ◽  
pp. 660-664
Author(s):  
P. P. Dobrovolsky ◽  
I. I. Kremis ◽  
S. V. Khryashchev ◽  
A. R. Novoselov ◽  
S. M. Churilov
Keyword(s):  
Aperture Diaphragm

Choice of best double-ringed aperture diaphragm by measurement of optical transfer function

1996 ◽  
Author(s):  
Jue Wang ◽  
Yanying Zhu ◽  
Dexin Zhao
Keyword(s):  
Transfer Function ◽  
Optical Transfer Function ◽  
Aperture Diaphragm ◽  
Optical Transfer

Characteristics of the foil lens for the correction of the spherical aberration and its application to STEM

1978 ◽  
Vol 36 (1) ◽  
pp. 38-39
Author(s):  
M. Hibino ◽  
M. Kuzuya ◽  
T. Hanai ◽  
S. Maruse
Keyword(s):  
Electron Beam ◽  
Potential Distribution ◽  
Spherical Aberration ◽  
Magnetic Lens ◽  
Aperture Diaphragm ◽  
Concave Lens ◽  
Thin Conducting

There have been a number of methods proposed and investigated for the correction of the spherical aberration, since this aberration is one of the most important factors which limit the performance of various kinds of electron beam instruments. A foil lens has been investigated preliminarily and the possibility of correcting the spherical aberration of a conventional magnetic lens with reasonable ease has been shown for the first time.The foil lens studied consists of an aperture diaphragm and a thin conducting foil fundamentally as is shown in Fig. 1, and is simple enough in design and adjustment. When the voltage is applied between the diaphragm and the foil, the curved potential distribution is produced around the aperture and the foil lens acts as a concave or negative lens. This concave lens produces the negative spherical aberration and can be utilized to correct the positive spherical aberration of the conventional magnetic lens.

Solid non-mechanical discretely-tunable hard-aperture diaphragm

2017 ◽  
Author(s):  
Shun-Hao Yu ◽  
Chih-Chieh Chang ◽  
Jheng-Hong Gu ◽  
Jui-che Tsai
Keyword(s):  
Aperture Diaphragm

Realization of a variable aperture diaphragm working in ultra high vacuum

1984 ◽  
Vol 23 (21) ◽  
pp. 3851 ◽  
Author(s):  
M. Velghe ◽  
D. A. G. Deacon ◽  
J. M. Ortega
Keyword(s):  
High Vacuum ◽  
Ultra High Vacuum ◽  
Aperture Diaphragm ◽  
Variable Aperture

scholarly journals Digital speckle photography with the ring aperture diaphragm

2017 ◽  
Vol 201 ◽  
pp. 155-163 ◽  
Author(s):  
M.N. Osipov ◽  
R.N. Sergeev
Keyword(s):  
Speckle Photography ◽  
Aperture Diaphragm ◽  
Digital Speckle Photography ◽  
Digital Speckle

Optical system with an external aperture diaphragm for astrometric systems

2000 ◽  
Vol 67 (5) ◽  
pp. 465
Author(s):  
A. P. Grammatin ◽  
E. A. Lustberg ◽  
L. A. Mirzoeva ◽  
N. Yu. Mavrina
Keyword(s):  
Optical System ◽  
Aperture Diaphragm ◽  
External Aperture

scholarly journals Rediscovery of Darkfieid Dispersion Staining while Building a Universal Student Microscope

2003 ◽  
Vol 11 (1) ◽  
pp. 24-28
Author(s):  
Theodore M. Clarke
Keyword(s):  
Light Source ◽  
Light Microscope ◽  
Fiber Optic ◽  
Light Guide ◽  
Polarized Light ◽  
Cover Glass ◽  
Artistic Value ◽  
Aperture Diaphragm ◽  
Reflected Light

My first universal student microscope, shown in Figure 1, began life as a Monolux microscope from the 1960rs. Its development into a universal student microscope began when my wife wanted a polarized light microscope with the ability to photograph microscopic crystals under a cover glass for their artistic value. My background as a metallurgist was with the reflected light metallurgical microscope, I have also designed and built vertical illuminators for brightfield illumination of complete metal log raphic specimens using a fiber optic light guide end as the light source with lens configurations giving an imaged field diaphragm and an illumination aperture diaphragm imaged in the aperture of the macro lens.

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