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The effect of the blue light on the human body
Dvořák, Petr ; Krbal, Michal (referee) ; Štěpánek, Jaroslav (advisor)
This thesis explains the term „blue light“. It deals with the sources of blue light and the effects of this type of electromagnetic radiance on human body. The focus is concentrate especially on problems, which are evocated of blue light. The biggest danger is the desynchronization of circadian rhythm and photochemical damage of retina – photoretinitis („blue light hazard“). The basic principles of biological processes and the visual system are described here. These processes are controlled by properties of incident light onto the retina of eye. The basic information about artificial sources of blue light commonly used in households and in industry are mentioned in the second half of work. These light sources were measured and elaborated. The electromagnetic spectrums of sources are portrayed and there is a comparison of sources due circadian effect too.
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Phototherapy
Joklík, Vojtěch ; Škoda, Jan (referee) ; Štěpánek, Jaroslav (advisor)
This thesis describes relationship between human body and light. It is focused on perception of light with human eye, skin and their reaction to incident light and its intensity. Then it contains short description of Icterus Neonatorum (yellow-gum), Constitutional Dermatitis, Lepriasis and their treatment. It is followed by description of various sources of light, their use in medicine and reaction of body to them. This work includes measurements and evaluation of five sources of light.
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The modulation techniques used in WDM optical networks
Lučenič, Lukáš ; Filka, Miloslav (referee) ; Kočí, Lukáš (advisor)
The main goal of the diploma thesis is DWDM simulation of optical network, defined by recommandation ITU-T. Optical network includes 16 communication channels with length of fiber 50 km. Each channel have to be set with bandwith 50GHz and Bit rate with minimal value 10Gbit/s. The final simulation model includes 8 types of modulation techniques. The result of the thesis is comparison modulation techniques in terms of usability of bandwith and comparison of the quality of transfer
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Realistic Rendering of a Building with Varying Lighting Conditions
Navrátil, Jan ; Seeman, Michal (referee) ; Herout, Adam (advisor)
This paper is focused on realistic rendering of interior environments with varying lighting conditions. It proposes methods of setting properties of light sources to achieve a specific scene appearence. It mainly works with light comming from a sky and sun to the scene and describes this light in relation to weather conditions, time of day and overcast factor. The goal is creating easily configurable system in which a single parameter change leads to significant change of lighting conditions. All these changes should be presented in a short video.
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A Virtual Instrument for Measurement of Flicker
Cabala, Ľuboš ; Bok, Jaromír (referee) ; Šlezingr, Jan (advisor)
This thesis deals with the voltage fluctuation, its causes, resourses and affections on light sources. Further the posibbilities of the voltage fluctuations limitation are mentioned. This thesis also contains the decriptions of construction of UIE/EIC flickermeter on which bases the virtual flickermeter is programmed in the LabVIEW.
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Automatic evaluation of the solar spectrum
Vlček, Josef ; Křivík, Petr (referee) ; Špinka, Jiří (advisor)
This master’s thesis deals with properties of a solar radiation, measurement of a solar spectrum and standard IEC 60904-9, which defines the requirements for a solar simulator. Solar simulators are classified as A, B or C for each of the three categories based on criteria of spectral distribution match, irradiance non-uniformity on the test plane and temporal instability. The goal of this thesis was creation software for automatic evaluation of a solar spectrum. Software was created in Matlab application and its function is to determine class of solar spectral match with spectrum AM1.5. The last part contains a measurement of various solar sources and using the created software was determined its spectral match with spectrum AM1.5.
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Simulation model of public light for Network Simulator 3
Kapoun, Vladislav ; Mlýnek, Petr (referee) ; Fujdiak, Radek (advisor)
This thesis is focused on the smart public lighting management possibilities. It describes smart public lighting management itself and the advantages of the new management possibilities compared to the current ones are illustrated as well. Furthermore, it deals with a comparison of the most used light resources and LED light resources. This thesis also outlines NS-3 simulation environment and states its advantages. Theoretical concept for energy-saving smart public lighting management system and its modifications for the needs of simulation is described in the paper. This theoretical concept is simulated and compared with the current smart public lighting management systems as well as with the systems designated by the third party.
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Simulator of solar light for the solar cells testing
Palla, Martin ; Solčanský, Marek (referee) ; Vaněk, Jiří (advisor)
The first part deals with an introduction to the basic fundamentals and presentation of theory from the assignment. The fundamentals are presented and described in detail. This part is followed by chapter describing possibilities of using solar energy. The paper presents possibilities of using both direct and diffuse solar radiation. The last chapter of the theoretical part is devoted to the basic description of the IEC 60904 and IEC 60904-9 standards. The practical part presents selected solar simulators and their measurement. Classification class according to IEC 60904-9 is determined from this measurement. The last part of the work is devoted to the construction of a solar simulator composed of LEDs. The simulator is then measured and its class is determined by emitted spectrum.
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Výzkum a analýza designu světel s integrovaným napájením fotovoltaickými články a lokality vhodné pro jejich využití zvláště v CHKO‚ parcích a jeho řešení s ohledem na světelný smog
S Laser, s.r.o., Uherské Hradiště ; Poruba, Aleš ; Mahdal, Zdeněk ; Damaška, David ; Seidelmann, Lois ; Smejkal, Petr ; Verbík, Petr ; Strnad, František
Rozvoj v oblasti obnovitelných zdrojů energie nutně přináší i otázky jak tyto zdroje optimálně využít v aplikacích. V případě fotovoltaického zdroje jsou to také, od veřejné energetické sítě izolované, zdroje světelné. Pro jejich instalaci existují důvody ekonomické, bezpečnostní, orientační a některé další, známé správcům těchto lokalit. Pro tyto účely je nutné vytvořit světelný zdroj pokud možno bezúdržbový, odolávající vlivům počasí, zvěři i vandalům, s řízenou i neřízenou iluminací, neprodukující světelný smog. Hlavními cíli navrhovaného projektu je výzkum a zmapování lokalit v CHKO a parcích nezávisle na elektrické síti a rovněž výzkum a analýza designu světel s integrovaným napájením fotovoltaickými články s ohledem na samočisticí schopnost, robustnost, materiálovou náročnost a cenu.
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Výzkum a analýza designu světel s integrovaným napájením fotovoltaickými články a lokality vhodné pro jejich využití zvláště v CHKO‚ parcích a jeho řešení s ohledem na světelný smog
S Laser, s.r.o., Uherské Hradiště ; Poruba, Aleš ; Mahdal, Zdeněk ; Damaška, David ; Seidelmann, Lois ; Smejkal, Petr ; Verbík, Petr ; Strnad, František
Rozvoj v oblasti obnovitelných zdrojů energie nutně přináší i otázky jak tyto zdroje optimálně využít v aplikacích. V případě fotovoltaického zdroje jsou to také, od veřejné energetické sítě izolované, zdroje světelné. Pro jejich instalaci existují důvody ekonomické, bezpečnostní, orientační a některé další, známé správcům těchto lokalit. Pro tyto účely je nutné vytvořit světelný zdroj pokud možno bezúdržbový, odolávající vlivům počasí, zvěři i vandalům, s řízenou i neřízenou iluminací, neprodukující světelný smog. Hlavními cíli navrhovaného projektu je výzkum a zmapování lokalit v CHKO a parcích nezávisle na elektrické síti a rovněž výzkum a analýza designu světel s integrovaným napájením fotovoltaickými články s ohledem na samočisticí schopnost, robustnost, materiálovou náročnost a cenu. Byly stanoveny základní tvary a funkčnost svítidla, elektronika byla vyvinuta na velmi dobré úrovni. Přínosem je nízká energetická náročnost.
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