Results 201 to 210 of about 4,539 (257)
Some of the next articles are maybe not open access.
Chromatic dispersion of the ocular media
Vision Research, 1982Measurements of chromatic dispersion of aqueous and vitreous humors, cornea and lens of the eye are sparse and incomplete. The wavelength variation in refractive index of the ocular media of cow, pig, frog (Rana pipiens), chicken, rock bass (Ambloplites rupestris), albino rat and cat as well as human lenses was determined by means of Abbe and Pulfrich ...
J G, Sivak, T, Mandelman
openaire +2 more sources
The chromatic dispersion module with large chromatic focal shift
2012 7th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), 2012This paper integrates micro-lenses to develop a miniature chromatic dispersion module with 1.89 mm (400–800 nm) chromatic focal shift for the application of the profile and roughness detection of roll to roll process. The dimension of the designed and fabricated lens module is about 6 mm (long) × 2 mm (diameter) which is far smaller to the commercial ...
M. C. Wei +3 more
openaire +1 more source
Chromostereopsis and Chromatic Dispersion
American journal of optometry and physiological optic, 1986ABSTRACT Slits placed before the eyes measured the chromatic dispersion of the eyes as a function of the separation of the slits. Prisms in front of the eyes determined the separation of the visual and null axes. The product of these separate measurements predicted the apparent depth expected with full‐pupil stereos‐copy.
openaire +2 more sources
Evaluation of longitudinal chromatic dispersion
Journal of Lightwave Technology, 1990The relationship between changes in the refractive index along a fiber and chromatic dispersion is investigated theoretically. The variance of the chromatic dispersion along a fiber is approximately proportional to that of longitudinal structural fiber parameters. To control the dispersion to within +or-1 ps/km/nm, theoretical results indicate that the
Nobuo Kuwaki
exaly +2 more sources
Chromatic dispersion of soft contact lens materials
Contact Lens and Anterior Eye, 2023To investigate and evaluate the chromatic dispersion of various hydrogel and silicon hydrogel contact lens materials.Eighteen different soft contact lens materials with high and low water content in lens power of -1.00 DS were measured by one operator at temperature of 20 °C ± 0.5° soaked in ISO standard phosphate-buffered saline (PBS) and in their ...
Beate Spychala, Klaus Ehrmann
exaly +3 more sources
Chromatic Dispersion Manipulation Based on Metalenses
Advanced Materials, 2019AbstractMetasurfaces are 2D metamaterials composed of subwavelength nanoantennas according to specific design. They have been utilized to precisely manipulate various parameters of light fields, such as phase, polarization, amplitude, etc., showing promising functionalities.
Wenbo Zang +10 more
openaire +2 more sources
Chromatically dispersed interferometry with wavelet analysis
Optics Letters, 2006A new white-light interferometry point sensor utilizing a chromatically dispersed depth detection field is addressed. Monitoring the interference in the optical frequency domain allows for microscopic height detection without the necessity of a mechanical axial scan.
Evangelos, Papastathopoulos +2 more
openaire +2 more sources
Chromatic dispersion in nonlinear optical waveguides
Microwave and Optical Technology Letters, 1989AbstractCompound chromatic dispersion has been calculated for waveguides with nonlinear substrate made of heavy metal oxide and fluoride glasses. Negative dispersion was found in a single‐mode regime for those guides. Crossover value of wavelength is waveguide power‐dependent.
Wartak, M.S., Chrostowski, J.
openaire +2 more sources
Transmission gratings for chromatic dispersion compensation
Optics Letters, 1996It is theoretically demonstrated that a succession of four unchirped gratings, ~20 mm long, induces a negative chromatic dispersion in transmission of -100 ps/nm over a 0.2-nm bandwidth, with a power loss below 1 dB. The stability of the proposed arrangement is also considered and found to be within today's technology.
B, Gisin, N, Gisin, F, Cochet
openaire +2 more sources
Tunable chromatic dispersion compensator
2004 23rd IEEE Convention of Electrical and Electronics Engineers in Israel, 2004One of the major bottlenecks in optical telecommunication systems is chromatic dispersion. Each frequency component of an optical pulse travels at a different group velocity, hence the pulse width broadens, thereby leading to system penalties. A demand for tunable compensators has arisen from DWDM systems with dynamic routing where the degree of pulse ...
D. Lever, A. Arie
openaire +1 more source