Agoston Boroczki - Academia.edu (original) (raw)
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Papers by Agoston Boroczki
International Journal of Applied Electromagnetics and Mechanics, 2002
A numerical method was developed for modeling acoustic standing waves emerging in high-pressure d... more A numerical method was developed for modeling acoustic standing waves emerging in high-pressure discharge lamps. The applied model takes the inhomogeneous distribution of propagation velocity into account, which is caused by the temperature profile. Arc physics was not considered. Software was implemented based on the finite element method. In addition to the sole computation of waves in some practical arrangements, also the validity of the applied model was investigated.
High intensity discharge lamp having a discharge vessel, two electrode rods with substantially fl... more High intensity discharge lamp having a discharge vessel, two electrode rods with substantially flat ends which oppose each other at opposite positions within the discharge vessel, and a wire coil, which is one of the electrode rods is wound around at least a portion of the surface at least, wherein said coil via the end of the respective electrode rod protrudes and forms a cavity to extend the dimming range of the lamp power in this manner.
An improved light collection efficiency in a motor vehicle headlamp (200) according to the projec... more An improved light collection efficiency in a motor vehicle headlamp (200) according to the projection principle is achieved in that a curved mirror (250) is added to deflect light, which is otherwise in a "low beam" mode of operation of the headlamp (200) through a rear side of the blocking Light -dark shield (222) would be absorbed. If the shield (222) is transferred into a second non-blocking position, a mirror segment of the curved surface (250) of the substantially ellipsoidal reflector (210) agrees to maximize the light output in a "high beam" mode of operation of the headlamp , In addition, auxiliary mirror segments may be used (270, 272) in order to achieve a more complete substantially elliptical reflector configuration which maximizes the light collection efficiency. Preferably, the lamp holder (300) is selectively added to (CLA) of the curved arc of the arc discharge light source (202) with the optical axis (OA) to position aligned with the center line ...
A new definition of picture degradation error caused by the sampling-transferring process in imag... more A new definition of picture degradation error caused by the sampling-transferring process in image scanners is described. The aim of this new error definition is to characterize the whole image transfer process. A method is shown based on calculation ofthis similarity error (which could also be called spectral distortion error) to estimate the possible character recognition error rate related to the optical transfer functions and sampling performance of the scanner. The increase of the probable reading error can be sufficiently estimated by the similarity error. Theoretical and experimental results are in good accordance. The different character types, scanners, and printer outputs can be characterized by this method, as well.
Measurement Science and Technology, Jun 19, 2007
In order to perform gas impurity analysis on operating lamps, a mass spectrometer based in situ f... more In order to perform gas impurity analysis on operating lamps, a mass spectrometer based in situ fracture stage has been built (Böröczki et al 2006 Meas. Sci. Technol.17 79). The main problem of the elevated temperature measurements is the rapid condensation of the constituents after fracturing the lamp. There are two available options to record more spectra before the thermal
International Journal of Applied Electromagnetics and Mechanics, 2002
A numerical method was developed for modeling acoustic standing waves emerging in high-pressure d... more A numerical method was developed for modeling acoustic standing waves emerging in high-pressure discharge lamps. The applied model takes the inhomogeneous distribution of propagation velocity into account, which is caused by the temperature profile. Arc physics was not considered. Software was implemented based on the finite element method. In addition to the sole computation of waves in some practical arrangements, also the validity of the applied model was investigated.
High intensity discharge lamp having a discharge vessel, two electrode rods with substantially fl... more High intensity discharge lamp having a discharge vessel, two electrode rods with substantially flat ends which oppose each other at opposite positions within the discharge vessel, and a wire coil, which is one of the electrode rods is wound around at least a portion of the surface at least, wherein said coil via the end of the respective electrode rod protrudes and forms a cavity to extend the dimming range of the lamp power in this manner.
An improved light collection efficiency in a motor vehicle headlamp (200) according to the projec... more An improved light collection efficiency in a motor vehicle headlamp (200) according to the projection principle is achieved in that a curved mirror (250) is added to deflect light, which is otherwise in a "low beam" mode of operation of the headlamp (200) through a rear side of the blocking Light -dark shield (222) would be absorbed. If the shield (222) is transferred into a second non-blocking position, a mirror segment of the curved surface (250) of the substantially ellipsoidal reflector (210) agrees to maximize the light output in a "high beam" mode of operation of the headlamp , In addition, auxiliary mirror segments may be used (270, 272) in order to achieve a more complete substantially elliptical reflector configuration which maximizes the light collection efficiency. Preferably, the lamp holder (300) is selectively added to (CLA) of the curved arc of the arc discharge light source (202) with the optical axis (OA) to position aligned with the center line ...
A new definition of picture degradation error caused by the sampling-transferring process in imag... more A new definition of picture degradation error caused by the sampling-transferring process in image scanners is described. The aim of this new error definition is to characterize the whole image transfer process. A method is shown based on calculation ofthis similarity error (which could also be called spectral distortion error) to estimate the possible character recognition error rate related to the optical transfer functions and sampling performance of the scanner. The increase of the probable reading error can be sufficiently estimated by the similarity error. Theoretical and experimental results are in good accordance. The different character types, scanners, and printer outputs can be characterized by this method, as well.
Measurement Science and Technology, Jun 19, 2007
In order to perform gas impurity analysis on operating lamps, a mass spectrometer based in situ f... more In order to perform gas impurity analysis on operating lamps, a mass spectrometer based in situ fracture stage has been built (Böröczki et al 2006 Meas. Sci. Technol.17 79). The main problem of the elevated temperature measurements is the rapid condensation of the constituents after fracturing the lamp. There are two available options to record more spectra before the thermal