Results 231 to 240 of about 41,883 (280)
Some of the next articles are maybe not open access.
Optometry and Vision Science, 1975
ABSTRACT In recent years it has become common for the birefringence pattern of a thermally toughened glass lens to be examined, and for a judgmental opinion of the impact resistance of that lens to be based on the regularity of the observed pattern Laboratory experiments were carried out to determine the validity of this practice.
openaire +2 more sources
ABSTRACT In recent years it has become common for the birefringence pattern of a thermally toughened glass lens to be examined, and for a judgmental opinion of the impact resistance of that lens to be based on the regularity of the observed pattern Laboratory experiments were carried out to determine the validity of this practice.
openaire +2 more sources
Wavelength dependence of birefringence in highly birefringent fibers
Optics Letters, 1982A simple technique is used to measure the wavelength dependence of the birefringence in highly birefringent fibers. In stress-induced fibers, the stress and shape birefringences reinforce each other, whereas in elliptical-core fibers the stress and shape birefringences can either reinforce each other or partially cancel, depending on the wavelength.
openaire +2 more sources
The Spectral Dispersion of Birefringence, Especially of Birefringent Plastic Sheets
Journal of the Optical Society of America, 1949It is shown apparently for the first time how dispersion of birefringence (retardation, phase difference or ellipticity) can be measured through the visible spectrum by the use of a Martens type of polarization photometer and monochromator. Dispersion curves are given for several organic thermoplastic sheets including those with both normal and ...
C D, WEST, A S, MAKAS
openaire +2 more sources
Improvements in birefringent filters 6: Analog birefringent elements
Applied Optics, 1980A 100-mA analog birefringent element has been built from a polarizing wide field solid Michelson interferometer. The analog element behaves on-axis identically to a crystal element but has the field characteristics of a wide field Michelson. It is demonstrated that by proper choice of glasses for the arms of the Michelson the wide field condition can ...
A M, Title, H E, Ramsey
openaire +2 more sources
Electric birefringence of actin
Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects, 1964Abstract The polymerization of actin was followed by the measurement of electric birefringence. Small elementary polymers of actin which appeared at very low salt concentrations or at the initial stage of polymerization showed a positive electric birefringence. They were oriented with the long axis parallel to the electric field.
S, KOBAYASI, H, ASAI, F, OOSAWA
openaire +2 more sources
Holodiagrams in birefringent media
Applied Optics, 2003The modifications to the holodiagram concept to describe free propagation (the extraordinary ray) inside birefringent materials are described. Holodiagrams are graphs showing the loci where the sum or the difference in the optical path from a generic point to two foci is the same.
Héctor, Rabal +3 more
openaire +2 more sources
Applied Optics, 1966
A rotating-field phase shifter is described which permits continuous electronic tuning of birefringent filters over extended spectral regions. The use of such phase shifters reduces the conditions for tuning synchronism between all filter stages to a simple relationship between the electrical driving frequencies.
openaire +2 more sources
A rotating-field phase shifter is described which permits continuous electronic tuning of birefringent filters over extended spectral regions. The use of such phase shifters reduces the conditions for tuning synchronism between all filter stages to a simple relationship between the electrical driving frequencies.
openaire +2 more sources
Potential optical functional crystals with large birefringence: Recent advances and future prospects
Coordination Chemistry Reviews, 2022Shujuan Han, Zhihua Yang, Shilie Pan
exaly