Zobrazeno 1 - 10
of 319
pro vyhledávání: '"L.L. Doskolovich"'
Publikováno v:
Компьютерная оптика, Vol 47, Iss 3, Pp 341-349 (2023)
We propose a coupled-mode theory for resonant diffraction gratings with a varying period. We consider diffractive structures, in which the reciprocal lattice vector, a quantity inversely proportional to the period, varies linearly in the direction of
Externí odkaz:
https://doaj.org/article/9298cd1142e64d689b90d18f666d36a7
Publikováno v:
Компьютерная оптика, Vol 47, Iss 1, Pp 40-47 (2023)
Using the previously developed optimization method for an extended light source [Byzov EV, Kravchenko SV, Moiseev MA, Bezus EA, Doskolovich LL. Optimization method for designing double-surface refractive optical elements for an extended light source.
Externí odkaz:
https://doaj.org/article/e9b0d786b2ab431fbd38038cded9c39f
Publikováno v:
Компьютерная оптика, Vol 46, Iss 6, Pp 899-904 (2022)
A device for visualization of blood vessels in the human skin is presented. A diffractive optical element is used to locate blood vessels in the skin image. It has been shown that visualization of blood vessels is most effective in the form of obtain
Externí odkaz:
https://doaj.org/article/124ee399d028469abf5fae11bf35657c
Publikováno v:
Компьютерная оптика, Vol 46, Iss 3, Pp 353-365 (2022)
The article deals with problems of generating desired illumination patterns, formulated in a special way. More precisely, we consider problems that can be reformulated as a Monge–Kantorovich mass transfer problem with some cost function. For all pr
Externí odkaz:
https://doaj.org/article/d61104c7b6ca4103b701ac0105bd6263
Publikováno v:
Компьютерная оптика, Vol 46, Iss 2, Pp 173-183 (2022)
We develop a method for calculating the eikonal function (or the phase function) of the light field, ensuring the formation of a prescribed irradiance distribution in the geometrical optics approximation. In the proposed method, the problem being sol
Externí odkaz:
https://doaj.org/article/b169b4154b6f42cebb024575df306391
Publikováno v:
Компьютерная оптика, Vol 45, Iss 6, Pp 818-827 (2021)
In the geometrical optics approximation, we consider a method for calculating a refractive optical element with two freeform surfaces, which transforms an incident beam with a plane wave-front into an output beam with a required wavefront and generat
Externí odkaz:
https://doaj.org/article/c421e7bdc7574d7984456c6e2829fe73
Publikováno v:
Компьютерная оптика, Vol 45, Iss 5, Pp 678-684 (2021)
The feasibility of an optical image edge detection based on metal-insulator-metal (MIM) resonance transmission structures is experimentally investigated. The structures are fabricated on a glass substrate and consist of thin aluminum layers separated
Externí odkaz:
https://doaj.org/article/993074e2deef426588cef3480e300446
Publikováno v:
Компьютерная оптика, Vol 45, Iss 3, Pp 356-363 (2021)
Optical properties of a resonant trilayer metal-dielectric-metal (MDM) structure that consists of an upper metal layer, a dielectric layer, and a metal substrate are investigated. Using a multiple wave interference model, we prove that the reflection
Externí odkaz:
https://doaj.org/article/9a33f00dfe204afcaa34eb102d90fef6
Publikováno v:
Компьютерная оптика, Vol 45, Iss 3, Pp 350-355 (2021)
A method for designing double aspheric lenses enabling minimal Fresnel losses in the class of stigmatic lenses is considered. Minimization of the Fresnel losses is provided by ensuring equal ray-deviation angles on both aspheric surfaces of the lens.
Externí odkaz:
https://doaj.org/article/683c68caf2fa4f6faf2f4538068fcfad
Publikováno v:
Компьютерная оптика, Vol 45, Iss 1, Pp 29-37 (2021)
We consider the problem of calculating a refractive element with two surfaces, forming a flat front and a given distribution of illumination. The supporting quadrics method is formulated for calculating a given optical element and it is shown that th
Externí odkaz:
https://doaj.org/article/1ffc1c5596dd4aa392ffad4af20fb54f