Ansvarsområder
Participation in various projects with industrial partners to improve their products
Kompetanse
· Research and development of MEMS (tuneable lenses, optical image stabilizers and others) based on deformation of a thin membrane by a piezo-actuator. Static and dynamic response, frequency response, thermal effects, drop and shock tests etc. Simulations and experiments.
· Diffraction of light by gratings and non-periodical structures. Theory, simulations and experiments
· MEMS-based devices for suppression of speckle in laser projection displays. Theory, simulations and experiments.
· Surface deformation of a thin viscoelastic layer caused by electrical field (Maxwell forces, electrostriction, generalized Navier-Stokes equations for viscoelastic media, electronic processes).
· Theoretical analysis of telecom systems (PDL, WDL, losses due to misalignment of glass fibers etc.).
· Simulations of waveguides (in COMSOL, simple level).
· Stochastic resonance in bistable systems (experiments).
Publikasjoner
Papers and articles
[1] M. A. Farghaly, V. K. Kartashov, M. N. Akram, and E. Halvorsen “Electromechanical modelling of piezoelectrically actuated MEMS tuneable lenses with geometric nonlinearity”, Journal of Intelligent Material Systems and Structures; May 2021
[2] W. Gao, Z. Tong, V. Kartashov, M. N. Akram, X. Chen “Replacing two-dimensional binary phase matrix by a pair of one-dimensional dynamic phase matrices for laser speckle reduction,” Journal of Display Technology, 2012, Vol. 8(5), p. 291-295
[3] S. V. Egge, M. N. Akram, V. Kartashov, K. Welde, Z. Tong, U. Österberg, A. Aksnes, ”Sinusoidal rotating grating for speckle reduction in laser projectors: feasibility study,” Optical Engineering, 2011, Vol. 50(8)
[4] S. V. Egge, U. Österberg, A. Aksnes, ”Speckle contrast of the sum of N partially correlated speckle patterns,” Journal of the Optical Society of America A, 2012, Vol. 29(6), p. 1188-1198
[5] V. Kartashov, M. N. Akram, “Speckle suppression in projection displays by using a motionless changing diffuser,” Journal of the Optical Society of America A, 2010, Vol. 27(12), p. 2593-2601
[6] G. Ouyang, Z. Tong, M. N. Akram, K. Wang, V. Kartashov, X. Yan, and X. Chen “Speckle reduction using a motionless diffractive optical element,” Optics Letters, 2010, Vol. 35(17), p. 2852-2854
[7] M. N. Akram, V. Kartashov, Z. Tong, “Speckle reduction in line-scan laser projectors using binary phase codes,” Optics Letters, Vol. 35(3), 2010, p. 444-446
[8] M. N. Akram, Z. Tong, G. Ouyang, X. Chen, V. Kartashov “Laser speckle reduction due to spatial and angular diversity introduced by fast scanning micro-mirror,” Applied Optics, 2010, Vol. 49(17), p. 3297-3304
[9] M. N. Akram, V. Kartashov, K. Wang, G. Ouyang, and X. Chen, “Laser speckle reduction using dynamic polymer-based diffraction grating spatial phase modulator,” Proc. SPIE, 2009, Vol. 7382, Laser sensing and imaging, Beijing, p. 73822H-1…9
[10] V. Kartashov, L. Henriksen, J. H. Ulvensøen, B. Svardal, T. Svortdal, R. Berglind, and G. Hedin, “Image improvement in a laser projection display with a spatial light modulator with a deformable polymer,” Journal of the Society for Information Display, 2009, Vol. 17(7), p. 581-587
[11] V. Kartashov, A. Kotov, S. Reshetnyak, Y. Filimonov, ”Stochastic resonance in a Tunnel Diode Circuit,” Technical Physics Letters, 2000, Vol. 26(3), p. 211-214
[12] V. Kartashov, S. Reshetnyak, G. Tretyakov, V. Shcheglov “The nonadiabatic theory of stochastic resonance,” Bulletin of the Lebedev Physics Institute, 2000, №9, p. 9-14
[13] V. Kartashov, S. Reshetnyak, G. Tretyakov, V. Shcheglov “Numerical simulation of stochastic resonance,” Bulletin of the Lebedev Physics Institute, 2000, №9, p. 15-19
[14] Y. Gushcho, V. Kartashov ”Optimization of the “Relief” space-temporal light modulator based on a deformable gel layer,” Sci. Appl. Photo., 1999, Vol. 44(2), p. 57-63
[15] Y. Gushcho, V. Kartashov ”A large-screen laser projector based on light modulation in a gel-like deformable layer,” Journal of the Moscow Physical Society, 1997, Vol. 7(4) , p. 351-361.
[16] Y. Gushcho, V. Kartashov ”On non-linear distortions of amplitude characteristics of the “Relief” light modulator,” Sci. Appl. Photo., 1995, Vol. 40(5), p. 53-58.
[17] Y. Gushcho, V. Kartashov ”Electrical charge moving in the reliefography spatial light modulator,” Photonics and optoelectronics, 1994, Vol. 2, p. 71-77.
[18] Y. Gushcho, V. Kartashov ”Characteristics of the “Relief” light modulator upon variable period of actuating voltage pulses,” Sci. Appl. Photo., 1994, Vol. 39(6), p. 1-7.
[19] Y. Gushcho, V. Kartashov ”Influence of space charge on developing and erasing of relief in light modulator “Relief,” Sci. Appl. Photo., 1994, Vol. 39(3), p. 40-51.
[20] Y. Gushcho, V. Kartashov ”Transient characteristics of the “Relief” light modulator,” Sci. Appl. Photo., 1994, Vol. 39(2), p. 24-35.
[21] Y. Gushcho, V. Kartashov ”Photographic characteristics of the photo-thermoplastic reliefography,” Sci. Appl. Photo., 1993, Vol. 38(3), p. 1-12.
[22] Y. Gushcho, V. Kartashov ”Conversion of a light image into a potential image in the photo-thermoplastic reliefography,” Sci. Appl. Photo., 1993, Vol. 38(2), p. 1-8.
[23] Y. Gushcho, V. Kartashov ”Recording and erasure of information in the “Relief” electro-optic light modulator,” Sci. Appl. Photo., 1992, Vol. 37(6), p. 433-439.
[24] Y. Gushcho, V. Kartashov “Deforming forces in the “Relief” electro-optic light modulator,” Sci. Appl. Photo., 1992, Vol. 37(4), p. 276-283.
[25] Y. Gushcho, V. Kartashov “Theory of the process of development and erasure of the relief in the electro-optic modulator “Relief,” Sci. Appl. Photo. Cinema., 1990, Vol. 35(3), p. 207-212.
[26] Y. Gushcho, V. Kartashov “To the problem of the optimization of the reliefographic photo-plastic light modulator,” Sci. Appl. Photo. Cinema., 1990, Vol. 35(2), p. 91-96.
[27] Y. Gushcho, V. Kartashov “Potential, charge and combined geometrical R-effects in the electro-optic modulator “Relief,” Sci. Appl. Photo. Cinema., 1990, Vol. 35(2), p. 145-146.
Y. Gushcho, V. Kartashov “Latent image in the electro-optic modulator “Relief,” Sci. Appl. Photo. Cinema., 1989, Vol. 34(5), p. 390-396.
Patent applications
[1] P. Craen, J.T. Kilpinen, V. Kartashov, N.Tallaron, A.Gillet. ”Sensor based control of an optical device with a variable optical power or a variable beam deflection”. EPO Application 21165787.9 Priority 30.03.2021. Published 30.12.2021.
[2] P. Craen, J.T. Kilpinen, V. Kartashov. ”Controllable lens actuated via flexure joints”. WIPO (PCT) Application WO2021259911A1. Priority 22.06.2021.
[3] J. Phair, V. Kartashov, T. Spatscheck. ”A tuneable micro-lens with a variable structure element”. EPO Application 14177684.9 - 1562. Priority 18.07.2014.
[4] V. Kartashov, M. N. Akram.”A method, device and system for reducing speckle contrast”.
EPO Application EP 2322957 A1. Priority 12.11.2009. Published 18.05.2011.
PCT Application WO 2011/058107 A1. Priority 12.11.2009. Published 19.05.2011.
[5] T. Spatscheck, V. Kartashov, J. H. Ulvensøen, L. Henriksen. International Patent Application ”Optical power switch (OPS)”. PCT/EP2010/063391. Priority 14.09.2009. Published 17.03.2011.
[6] L. Henriksen, T. Spatscheck, V. Kartashov, J. H. Ulvensøen. International Patent Application ”A method and arrangement for reducing thermal effects in compact adjustable optical lenses,” PCT/NO2009/000255. Priority 11.07.2008. Published 14.01.2010.
[7] B. Svardal, T. Spatscheck, V. Kartashov. International Patent Application ”A device for providing stabilized images in a handheld camera,” PCT/NO2008/000055. Priority 12.02.2007. Published 21.08.2008.
Based on Norwegian Patent Application “En innretning for å gi stabiliserte bilder i et håndholdt kamera,” 2007, №20070797.
[8] L. Henriksen, M. Eliassen, V. Kartashov, J. H. Ulvensøen, I.-R. Johansen, K. H. Haugholt, D. T. Wang, F. Tyholdt, W. Booij. International Patent Application ”Flexible lens assembly with variable focal length,” PCT/NO2008/000056. Priority 12.02.2007. Published 21.08.2008.
Based on Norwegian Patent Application “Fleksibel linsesammensetning med variable fokallengde,” 2007, № 20070803.
[9] L. Henriksen, M. Eliassen, V. Kartashov, J. H. Ulvensøen, I.-R. Johansen, K. H. Haugholt, D. T. Wang, F. Tyholdt, W. Booij. United States Patent ”Compact adjustable lens,” Patent No. US8045280 B2. Date of Patent: 25.10.2011. PCT Pub. Date: 17.04.2008.
Based on Norwegian Patent Applications “Konstruksjon av justerbar linse,” 2006, № 20064625 and № 20065237.
[10] L. Henriksen, M. Eliassen, V. Kartashov, J. H. Ulvensøen. International Patent Application ”Method for manufacturing adjustable lens” PCT/NO2007/00351. Priority 11.10.2006, 14.11.2006. Published 17.04.2008.
Based on Norwegian Patent Applications ”Fremgangsmåte for å produsere justerbar linse,” 2006, №20064624 and №20065238.
[11] V. Kartashov, G. Hedin, T. Naterstad, E. Kolltveit. International Patent Application ”Method and arrangement for reducing artifacts in a Tuneable Diffraction Grating (TDG) optical component,” PCT/NO2007/000011. Priority 17.01.2006. Published 26.07.2007.
Based on Norwegian Pat. Application ”Fremgangsmåte og anordning for å redusere artefakt i en TDG (Tuneable Diffraction Grating) optisk komponent,” 2006, №20060248.
[12] G. Hedin, L. Henriksen, V. Kartashov, M. Eliassen. International Patent Application ”Method for increasing the surface conductivity of a polymer used in a tuneable diffraction grating (TDG) modulator,” PCT/NO2006/0000464. Priority 6.12.2005. Published 14.06.2007.
[13] L. Henriksen, V. Kartashov. Patent Application ”Polymer for use in a tuneable diffraction grating (TDG) modulator”.
PCT/NO2006/0000463. Priority 6.12.2005. Published 14.06.2007.
WO/2007/067068A1. Priority 6.12.2005. Filing date 6.12.2006. Published 14.06.2007.
US 2009/0221765 A1. Priority 6.12.2005. Filing date 6.12.2006. Published 3.09.2009.
[14] T. Svortdal, A.S. Johannessen, V. Kartashov, G. Hedin, R. Berglind, E. Kolltveit. International Patent Application ”A Method and design thereof of light modulators reducing scattering artefacts,” PCT/NO2006/0000471. Priority 7.12.2005. Published 14.06.2007.
Based on Norwegian Patent Application ”Fremgangsmåte og konstruksjon i henholdt til denne av lysmodulatorer som reduserer lysspredningsartefakter” , 2005, №20055797.
[15] V. Kartashov, G. Hedin, A.S. Johannessen, T. Svortdal, E. Kolltveit, R. Berglind. International Patent Application ”A Tuneable Diffraction Grating (TDG) optical chip comprising a fork like structural embodiment of electrodes,” PCT/NO2006/0000465. Priority 7.12.2005. Published 14.06.2007.
Based on Norwegian Patent Application ”TDG optisk brikke innbefattende en gaffel liknende strukturell utførelse av elektroder,” 2005, №20055795.
[16] H. Gunnar, E. Zimmer, V. Kartashov, T. Naterstad, B. Jacobson. International Patent Application ”Method and device for reduction of polarization-dependent effects in a tuneable optical component,” PCT/NO2004/00261. Priority 05.09.2003. Published 17.03.2005.
Based on Norwegian Patent Application ”Fremgangsmåte og innretning for å redusere polarisasjonsavhengige effekter i en innstillbar, optisk komponent,” 2006, №20061512.