Abstract: An improved light-readable information recording medium is provided that comprises an optical data storage structure having lands and pits, in which the depth of the pits is about: ? 2 ? n ? m 1 + M T 2 , wherein ? is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, and n is the refractive index encountered by the reading light inside the pits. The invention also provides an improved optical reading system with the parameters satisfying the relationship: nd = ? 2 ? n ? m 1 + M T 2 , wherein ? is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, n is the refractive index encountered by the reading light inside the pits, and d is the depth of the pits.

Abstract: An improved light-readable information recording medium is provided that comprises an optical data storage structure having lands and pits, in which the depth of the pits is about: ? 2 ? n ? m 1 + M T 2 , wherein ? is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, and n is the refractive index encountered by the reading light inside the pits. The invention also provides an improved optical reading system with the parameters satisfying the relationship: nd = ? 2 ? n ? m 1 + M T 2 , wherein ? is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, n is the refractive index encountered by the reading light inside the pits, and d is the depth of the pits.

Abstract: An improved light-readable information recording medium is provided that comprises an optical data storage structure having lands and pits, in which the depth of the pits is about: ? 2 ? n ? m 1 + M T 2 , wherein ? is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MTT is the transverse magnification, and n is the refractive index encountered by the reading light inside the pits. The invention also provides an improved optical reading system with the parameters satisfying the relationship: n ? ? ? d ? ? 2 ? m 1 + M T 2 , wherein ? is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, n is the refractive index encountered by the reading light inside the pits, and d is the depth of the pits.

Abstract: An improved light-readable information recording medium is provided that comprises an optical data storage structure having lands and pits, in which the depth of the pits is about: λ 2 ⁢ n ⁢   ⁢   ⁢ M 1 + m T 2 , wherein &lgr; is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, and n is the refractive index encountered by the reading light inside the pits.

Abstract: An improved light-readable information recording medium is provided that comprises an optical data storage structure having lands and pits, in which the depth of the pits is about: 1 λ 2 ⁢ n ⁢ m 1 + M T 2 ,

Abstract: An improved light-readable information recording medium is provided that comprises an optical data storage structure having lands and pits, in which the depth of the pits is about: 1 λ 2 ⁢ n ⁢   ⁢   ⁢ M 1 + m t 2 ,

Abstract: Optical filters and filter systems operate in accordance with correlation-induced spectral changes and are applied for spectral line resolution in spectrometry, for optical data processing and for cryptography, as by having prescribed filtering properties in different directions of observation.

Abstract: Disclosed is separation of the compressional and shear components of the wavefield measured in 3-component vertical seismic profiling. The separation involves working in the zx plane defined by the borehole axis (z) and the surface seismic source, and in successive and overlapping windows each defined by (i) a depth interval centered at the depth level currently being processed and including several depth levels above and below and (ii) a time interval sufficiently long to include the receipt of the relevant seismic energy by the geophones.