Zobrazeno 1 - 10
of 14
pro vyhledávání: '"David Tomka"'
Publikováno v:
Applied Sciences, Vol 10, Iss 22, p 8194 (2020)
Due to the increasing demands on the quality of solid-state laser active media production based on yttrium aluminum garnet Y3Al5O12 in the form of rods with precisely machined faces, the possibilities of applying subaperture 3D corrective polishing i
Externí odkaz:
https://doaj.org/article/9795db6ed2e944a6858190003088d9ec
Autor:
František Procháska, David Tomka, Petr Vavruška, Markéta Paprčková, Radek Melich, Ondřej Matoušek, Emilie Lhomé
Publikováno v:
Journal of Instrumentation. 18:P04022
The aim of the presented article is to share experience gained throughout the course of two projects focused on precise grinding of a free-form glass optical element with the objective of achieving a surface shape error of less than approximately 10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c41a96e21a4c94be866b7df18757b3a
https://doi.org/10.1088/1748-0221/18/04/p04022
https://doi.org/10.1088/1748-0221/18/04/p04022
Publikováno v:
Manufacturing Technology. 21:14-19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::accda1b49749ec798ce3bf63841794fe
https://doi.org/10.21062/mft.2021.020
https://doi.org/10.21062/mft.2021.020
Publikováno v:
Applied Sciences
Volume 10
Issue 22
Applied Sciences, Vol 10, Iss 8194, p 8194 (2020)
Volume 10
Issue 22
Applied Sciences, Vol 10, Iss 8194, p 8194 (2020)
Due to the increasing demands on the quality of solid-state laser active media production based on yttrium aluminum garnet Y3Al5O12 in the form of rods with precisely machined faces, the possibilities of applying subaperture 3D corrective polishing i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fe38f8f034d0782cd39ce0a69ccf69a
Publikováno v:
Optical Engineering. 58:1
We focus on the subaperture polishing tool concept development for suppressing midspatial frequencies (MSF) arising from computer numerical control machining of aspherical optical surfaces. The selective effect in the MSF range is achieved by setting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2d4aa9c8f296cdd8f6fe745423b8a11
https://doi.org/10.1117/1.oe.58.11.115102
https://doi.org/10.1117/1.oe.58.11.115102
Autor:
Zdeněk Rail, Jiří Bartoňíček, David Tomka, František Procháska, Radek Melich, Jan Pleštil, Bohdan Šrajer
Publikováno v:
SPIE Proceedings.
The paper describes an achromatic Steinhal type doublet that employs an aspherical surface to allow wide angle imaging. A design criteria, optimization techniques and tolerancing of the doublet are described. Further a manufacturing process of the sy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4ad4548997e2aa501b4b846bdfe45b9
https://doi.org/10.1117/12.2257511
https://doi.org/10.1117/12.2257511
Publikováno v:
SPIE Proceedings.
The aim of this work is an exploration of the options for optical surface polishing using the Zeeko IRP 100 machine and raster kinematics suitable for free-form polishing. For this purpose, aspheric surfaces were polished in raster prepolishing mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::614e90573655350783210c6ca739157a
https://doi.org/10.1117/12.2256558
https://doi.org/10.1117/12.2256558
Publikováno v:
SPIE Proceedings.
We have realized an optical design of air space doublet of 100 mm clear aperture and 520 mm focal length that is optimized with respect to a quality of wavefront error better than 0.07 λ RMS for on-axis imaging at wavelengths of 633 nm and 450 nm. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f4e3ccbc452f5099707da8e24fccd19
https://doi.org/10.1117/12.2175915
https://doi.org/10.1117/12.2175915
Publikováno v:
SPIE Proceedings.
The aim of this study was to determine the optimal subaperture polishing procedure for aspherical surfaces on the Optotech MCP 250 CNC machine. Due to the fact that the CNC subaperture polishing process runs along well defined paths, certain frequenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20555a70fe8c286ea9e66ef0285ad40b
https://doi.org/10.1117/12.2087102
https://doi.org/10.1117/12.2087102
Publikováno v:
SPIE Proceedings.
The developed method is used for subsurface damage evaluation. It is based on CNC subaperture asymmetric polishing of the surface, which leads to the formation of a wedge with decreasing depth, depending on the diameter and a subsequent analysis of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21b87ef8487d0d81c2dc1712428b0e51
https://doi.org/10.1117/12.2176024
https://doi.org/10.1117/12.2176024