Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Carsten Dam-Hansen"'
Publikováno v:
JPhys Photonics, Vol 6, Iss 1, p 015005 (2024)
Laser lighting is emerging as a viable replacement for other light sources in applications requiring high luminance not achievable with LEDs. Phosphor materials for laser lighting are often optimized in terms of luminous efficiency and/or colorimetri
Externí odkaz:
https://doaj.org/article/9476bbf2ffbc42c5bd29c4166da939dd
Autor:
Carlo Volf, Anne Sofie Aggestrup, Signe Dunker Svendsen, Torben Skov Hansen, Paul Michael Petersen, Carsten Dam-Hansen, Ulla Knorr, Ema Erkocevic Petersen, Janus Engstrøm, Ida Hageman, Janus Christian Jakobsen, Klaus Martiny
Publikováno v:
Pilot and Feasibility Studies, Vol 6, Iss 1, Pp 1-9 (2020)
Abstract Background Retrospective studies conducted in psychiatric wards have indicated a shorter duration of stay for depressed inpatients in bright compared to dim daylight-exposed rooms, pointing to a possible antidepressant effect of daylight con
Externí odkaz:
https://doaj.org/article/48c96154a4324582a9b015fec05ef581
Autor:
Anastasiia Krasnoshchoka, Anders Thorseth, Carsten Dam-Hansen, Dennis Dan Corell, Paul Michael Petersen, Ole Bjarlin Jensen
Publikováno v:
Materials, Vol 10, Iss 12, p 1407 (2017)
We report observations of saturation effects in a Ce:LuAG and Eu-doped nitride ceramic phosphor for conversion of blue laser light for white light generation. The luminous flux from the phosphors material increases linearly with the input power until
Externí odkaz:
https://doaj.org/article/dff920fd46eb4d2e81b91e1f36b9df08
Autor:
Nicholas Riedel-Lyngskær, Martynas Ribaconka, Mário Pó, Anders Thorseth, Sune Thorsteinsson, Carsten Dam-Hansen, Michael L. Jakobsen
Publikováno v:
Riedel-Lyngskær, N, Ribaconka, M, Pó, M, Thorseth, A, Thorsteinsson, S, Dam-Hansen, C & Jakobsen, M L 2021, ' The effect of spectral albedo in bifacial photovoltaic performance ', Solar Energy, vol. 231, pp. 921-935 . https://doi.org/10.1016/j.solener.2021.12.023
This paper analyzes 15-months of spectral albedo measurements collected at the Technical University of Denmark (55.6°N, 12.1°E). High-resolution spectroradiometers are used to monitor four albedo scenarios, which include green vegetation, dry veget
Autor:
Jian Xu, Yang Yang, Haipeng Ji, Zhi Jiang, Carsten Dam-Hansen, Jing Wang, Xinliang Wang, Baofu Hu, Ziquan Guo, Baoli Du, Ole B. Jensen
Publikováno v:
Xu, J, Yang, Y, Jiang, Z, Hu, B, Wang, X, Ji, H, Wang, J, Guo, Z, Du, B, Dam-Hansen, C & Jensen, O B 2021, ' CaAlSiN 3 :Eu/glass composite film in reflective configuration : A thermally robust and efficient red-emitting color converter with high saturation threshold for high-power high color rendering laser lighting ', Ceramics International, vol. 47, no. 11, pp. 15307-15312 . https://doi.org/10.1016/j.ceramint.2021.02.094
To achieve high color rendering and proper color temperature, a red color converter is essential for phosphor-converted white lighting devices. CaAlSiN3:Eu2+ (CASN) is a highly suitable red phosphor for white light-emitting diodes. However, it can be
Autor:
Anders Thorseth, Carsten Dam-Hansen
This Technical Report provides basic measurement principles and practical guidance on spectroradiometry of optical radiation sources in the ultraviolet, visible and near‑infrared regions of the electromagnetic spectrum in the wavelength range from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a889617c0bcc2b96899d7e40b84bf284
https://doi.org/10.25039/tr.250.2022
https://doi.org/10.25039/tr.250.2022
Publikováno v:
Veitch, J A, Martinsons, C, Dam-Hansen, C & Coyne, S 2021, ' Correspondence: On the state of knowledge concerning the effects of temporal light modulation ', Lighting Research and Technology, vol. 53, no. 1, pp. 89–92 . https://doi.org/10.1177/1477153520959182
Temporal light modulation (TLM) is a change in the luminous quantity or spectral distribution of light with respect to time of either a light source or a lighting system. These changes arise because of the device or system design, including drivers a
Autor:
Haipeng Ji, Ziquan Guo, Carsten Dam-Hansen, Jian Xu, Bingguo Liu, Dennis Dan Corell, Baoli Du, Ole B. Jensen, Yang Yang
Publikováno v:
Xu, J, Yang, Y, Guo, Z, Corell, D D, Du, B, Liu, B, Ji, H, Dam-Hansen, C & Jensen, O B 2020, ' Comparative study of Al 2 O 3-YAG:Ce composite ceramic and single crystal YAG:Ce phosphors for high-power laser lighting ', Ceramics International, vol. 46, pp. 17923-17928 . https://doi.org/10.1016/j.ceramint.2020.04.101
Recent studies revealed that both the Al2O3–Y3Al5O12:Ce (YAG:Ce) composite ceramic (YAG-CC) and single crystalline YAG:Ce (YAG-SC) possess very high luminescence-saturation thresholds (LSTs), which makes them promising for laser lighting applicatio
Autor:
Janus Christian Jakobsen, Anne Sofie Aggestrup, Carsten Dam-Hansen, Ema Erkocevic Petersen, Torben Hansen, Ulla Knorr, Ida Hageman, Klaus Martiny, Signe Dunker Svendsen, Janus Engstrøm, Paul Michael Petersen, Carlo Volf
Publikováno v:
Pilot and Feasibility Studies, Vol 6, Iss 1, Pp 1-9 (2020)
Pilot and Feasibility Studies
Volf, C, Aggestrup, A S, Svendsen, S D, Hansen, T S, Petersen, P M, Dam-Hansen, C, Knorr, U, Petersen, E E, Engstrøm, J, Hageman, I, Jakobsen, J C & Martiny, K 2020, ' Dynamic LED light versus static LED light for depressed inpatients : Results from a randomized feasibility trial ', Pilot and Feasibility Studies, vol. 6, 5 . https://doi.org/10.1186/s40814-019-0548-9
Volf, C, Aggestrup, A S, Svendsen, S D, Hansen, T S, Petersen, P M, Dam-Hansen, C, Knorr, U, Petersen, E E, Engstrøm, J, Hageman, I, Jakobsen, J C & Martiny, K 2020, ' Dynamic LED light versus static LED light for depressed inpatients : Results from a randomized feasibility trial ', Pilot and Feasibility Studies, vol. 6, no. 1, 5 . https://doi.org/10.1186/s40814-019-0548-9
Volf, C, Aggestrup, A S, Svendsen, S D, Hansen, T S, Petersen, P M, Dam-Hansen, C, Knorr, U, Petersen, E E, Engstrøm, J, Hageman, I, Jakobsen, J C & Martiny, K 2020, ' Dynamic LED light versus static LED light for depressed inpatients : results from a randomized feasibility trial ', Pilot and Feasibility Studies, vol. 6, no. 1, 5 . https://doi.org/10.1186/s40814-019-0548-9
Pilot and Feasibility Studies
Volf, C, Aggestrup, A S, Svendsen, S D, Hansen, T S, Petersen, P M, Dam-Hansen, C, Knorr, U, Petersen, E E, Engstrøm, J, Hageman, I, Jakobsen, J C & Martiny, K 2020, ' Dynamic LED light versus static LED light for depressed inpatients : Results from a randomized feasibility trial ', Pilot and Feasibility Studies, vol. 6, 5 . https://doi.org/10.1186/s40814-019-0548-9
Volf, C, Aggestrup, A S, Svendsen, S D, Hansen, T S, Petersen, P M, Dam-Hansen, C, Knorr, U, Petersen, E E, Engstrøm, J, Hageman, I, Jakobsen, J C & Martiny, K 2020, ' Dynamic LED light versus static LED light for depressed inpatients : Results from a randomized feasibility trial ', Pilot and Feasibility Studies, vol. 6, no. 1, 5 . https://doi.org/10.1186/s40814-019-0548-9
Volf, C, Aggestrup, A S, Svendsen, S D, Hansen, T S, Petersen, P M, Dam-Hansen, C, Knorr, U, Petersen, E E, Engstrøm, J, Hageman, I, Jakobsen, J C & Martiny, K 2020, ' Dynamic LED light versus static LED light for depressed inpatients : results from a randomized feasibility trial ', Pilot and Feasibility Studies, vol. 6, no. 1, 5 . https://doi.org/10.1186/s40814-019-0548-9
Background Retrospective studies conducted in psychiatric wards have indicated a shorter duration of stay for depressed inpatients in bright compared to dim daylight-exposed rooms, pointing to a possible antidepressant effect of daylight conditions.
Autor:
Mario Po, Sune Thorsteinsson, Anders Thorseth, Carsten Dam-Hansen, Nicholas Riedel-Lyngskar, Michael Linde Jakobsen, Martynas Ribaconka
Publikováno v:
Riedel-Lyngskar, N, Ribaconka, M, Po, M, Thorsteinsson, S, Thorseth, A, Dam-Hansen, C & Jakobsen, M L 2021, Spectral Albedo in Bifacial Photovoltaic Modeling: What can be learned from Onsite Measurements? in Proceedings of 48 th IEEE Photovoltaic Specialists Conference . IEEE, pp. 0942-0949, 48 th IEEE Photovoltaic Specialists Conference, 20/06/2021 . https://doi.org/10.1109/PVSC43889.2021.9519085
This contribution reports on a yearlong spectral albedo measurement campaign performed in Roskilde, Denmark. Four albedo scenarios are monitored using three sensor types. The ground surfaces include green grass, dry grass, gravel, and snow – all of