Download presentation
1
Lysmikroskopi MENA3100,OBK,
2
Lysmikroskop Optisk mikroskop Forstørrelse (magnification)
Oppløsningsevne (resolution) Kontrast Vi ønsker å se flere detaljer
3
Simple microscope Lupe, forstørrelsesglass
4
The simple microscope Antony van Leeuwenhoek (1632−1723)
5
Det sammensatte mikroskop
The compound microscope ca Hans Janssen Robert Hooke (1635−1703) Micrographia, 1664
6
Don’t get too hang up in the ray tracing
7
Stereomikroskop Stereo microscope
8
Mikroskop for gjennomfallende lys
Compound microscope for transmitted light
9
Mikroskop for reflektert lys
Inverted compound microscope for reflected light
12
jwiley_microscopy/2006_Sept_Hammond.pdf
13
Illuminating system Specimen Condenser lens Aperture diaphragm
Field diaphragm Filament
14
Controll illuminated area
Illuminating system Specimen Condenser lens Aperture diaphragm Köhler illumination Uniform specimen illumination Field diaphragm Controll illuminated area Field diaphragm Aperture diaphragm Controll angle of the cone of light Filament
15
Imaging system Eyepiece Okular Tube lens Objective Specimen
16
Primary image
17
Refraction
18
Kromatisk abberation
19
Spherical abberation
20
Corrections The objective
21
The limiting factor: Diffraction
22
Resolution R = 0,61l/NA Rayleigh criterion
(Raleigh in Brandon and Kaplan)
24
Abbe
25
Numerical aperture (NA)
NA = nsina Resolution R = 0,61l/NA
26
Oil immersion
27
Fouriertransformasjon
28
Condenser system Eyepice Ocular (okular)
More is needed than just the objective Condenser system Eyepice Ocular (okular)
30
Optical anisotropy Calcite
31
Amorphous and cubic: Optically isotropic, one refracive index
Hexagonal, trigonal, tetragonal: Optically anisotropic, two refractive indices Lower symmetry: Optically anisotropic, three refractive indices
32
Optically active crystals in the microscope
33
Optically active crystals in the microscope
34
Michel-Levy chart
36
Remember that geologists often call their book on microscopy on thin sections for
optical crystallography, and microscopy with reflected light is ore microscopy (malmmikroskopi). Some web sites: maintenance:
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.