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Measuring the Effectiveness of the Hollow Light Guide
Zajíček, Josef ; Mohelníková, Jitka (referee) ; Baxant, Petr (advisor)
This thesis describes hollow lightguides used for inner-space lighting. One of the goals of this thesis is to describe the function, classification and use of hollow lightguides in certain applications. The basic optical properties of these systems are also discussed. The main goal of the thesis is to propose a lab procedure to measure the efficiency of the hollow lightguides available at the faculty. A measurement method which simulates diffuse lighting is proposed for the lab procedure. This method was adjusted to fit the capabilities of the lighting laboratory of the faculty. The thesis includes a complete measurement of the efficiency of a hollow lightguide. This includes the description of the measurement method, the measured values and an evaluation of the measurement.
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Influence of optical elements on the tubular skylights efficiency
Nekvapil, Jan ; Mohelníková, Jitka (referee) ; Škoda, Jan (advisor)
This thesis deals with the measurement of light tubes efficiency in laboratory conditions during lighting by almost direct light rays. It also deals with the measurement of the spectral reflectance of the reflective materials available on the Czech market. The comparison of the efficiency of different light routes and also the determination of the spectral qualities of different reflective materials are the aims of this thesis. The light tubes were measured by means of the cubic integrator. The light source was moved and manoeuvred by means of the automatic goniophotometer. The light source flow was determined by the method of the zonal flows. The data were calculated in the Matlab programme. The evaluation is both in the graphic and in the numeric forms. The result of the thesis is both the comparison of the reflective materials for light tubes qualities, and the evaluation of efficiency of the assigned light routes. The optimal variant can be then selected during designing of the light tubes route according to the results of the measurements.
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Influence of optical elements on the tubular skylights efficiency
Nekvapil, Jan ; Mohelníková, Jitka (referee) ; Škoda, Jan (advisor)
This thesis deals with the measurement of light tubes efficiency in laboratory conditions during lighting by almost direct light rays. It also deals with the measurement of the spectral reflectance of the reflective materials available on the Czech market. The comparison of the efficiency of different light routes and also the determination of the spectral qualities of different reflective materials are the aims of this thesis. The light tubes were measured by means of the cubic integrator. The light source was moved and manoeuvred by means of the automatic goniophotometer. The light source flow was determined by the method of the zonal flows. The data were calculated in the Matlab programme. The evaluation is both in the graphic and in the numeric forms. The result of the thesis is both the comparison of the reflective materials for light tubes qualities, and the evaluation of efficiency of the assigned light routes. The optimal variant can be then selected during designing of the light tubes route according to the results of the measurements.
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Measuring the Effectiveness of the Hollow Light Guide
Zajíček, Josef ; Mohelníková, Jitka (referee) ; Baxant, Petr (advisor)
This thesis describes hollow lightguides used for inner-space lighting. One of the goals of this thesis is to describe the function, classification and use of hollow lightguides in certain applications. The basic optical properties of these systems are also discussed. The main goal of the thesis is to propose a lab procedure to measure the efficiency of the hollow lightguides available at the faculty. A measurement method which simulates diffuse lighting is proposed for the lab procedure. This method was adjusted to fit the capabilities of the lighting laboratory of the faculty. The thesis includes a complete measurement of the efficiency of a hollow lightguide. This includes the description of the measurement method, the measured values and an evaluation of the measurement.
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