Coelfen et al., 1994 - Google Patents
Ultrasensitive Schlieren optical systemCoelfen et al., 1994
- Document ID
- 3578067071859656066
- Author
- Coelfen H
- Borchard W
- Publication year
- Publication venue
- Biochemical Diagnostic Instrumentation
External Links
Snippet
The schlieren optical system detects dn/dr which is the gradient of the refractive index n with the location r in dependence on the location r. A simple optical modification is presented which increases the sensitivity of a schlieren optical system extensively. This improvement is …
- 230000003287 optical 0 title abstract description 59
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by the preceding groups
- G01N33/48—Investigating or analysing materials by specific methods not covered by the preceding groups biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing of optical properties of lenses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Schachman | Ultracentrifugation in biochemistry | |
US4930893A (en) | Electrophoresis imaging system | |
Hartman et al. | Quantitative surface topography determination by Nomarski reflection microscopy. 2: Microscope modification, calibration, and planar sample experiments | |
US2412602A (en) | Electrophoresis apparatus | |
Ghozeil et al. | Screen test for large mirrors | |
Coelfen et al. | Ultrasensitive Schlieren optical system | |
Bornhop et al. | Polarimetry in capillary dimensions | |
JP2002243632A (en) | Flow cell, detection device and liquid sample measurement device | |
EP0128183B1 (en) | Inspection apparatus and method | |
US3068743A (en) | Optical apparatus for measuring small distances | |
WO1995009355A1 (en) | A new method of detecting substances in a liquid | |
Dyson | Very stable common-path interferometers and applications | |
Wu et al. | Diode laser-based concentration gradient imaging detector for capillary isoelectric focusing | |
US5231466A (en) | Capillary fluid stream concentration measuring apparatus and method | |
Patorski et al. | Tilt-shift error detection in phase-shifting interferometry | |
Teller | Modification of the Nikon microcomparator for accurate reading of Rayleigh interference patterns | |
JPH11108838A (en) | Turbidity measuring method and turbidity measuring instrument | |
US3471237A (en) | Method of alignment of concave parabolic reflective optics | |
Peck et al. | Optical errors in a liquid chromatography absorbance cell | |
Saunders et al. | Interferometer for large surfaces | |
Swift | A simple moiré fringe technique for magnification checking | |
US3226556A (en) | Photosensitive liquid examining means for electrophoresis apparatus | |
Simpson et al. | Ultracentrifuge time-lapse photography. Determination of molecular weights | |
JPS60142204A (en) | Dimension measuring method of object | |
US2684011A (en) | Method and apparatus for measuring angles between reflecting surfaces |