DownLight Simulation with LED Module in the program «Compass-3D»

2021 ◽  
Author(s):  
Keyword(s):  
3D Modeling ◽  
Luminous Intensity ◽  
Intensity Curve ◽  
Fluorescent Lamps

The design of LED lamps of the DownLight type is considered. Their main advantages over traditional lamps with incandescent and fluorescent lamps are shown. 3D-modeling of the DownLight type luminaire and its elements was carried out in the «Compass-3D» program. Keywords luminaire with LED module; Compass-3D; luminous intensity curve (LIC) of light device

scholarly journals Luminous Intensity Field Optimization for Antiglare LED Desk Lamp without Second Optical Element

2020 ◽  
Vol 10 (7) ◽  
pp. 2607 ◽  
Author(s):  
Zhi-Ting Ye ◽  
Chieh Chang ◽  
Mao-Chieh Juan ◽  
Kuei-Jung Chen
Keyword(s):  
Light Emitting Diode ◽  
Optical Element ◽  
Spatial Effect ◽  
Experimental Results ◽  
Luminous Intensity ◽  
Beam Angle ◽  
Intensity Curve ◽  
Light Emitting ◽  
Human Eye ◽  
Intensity Field

This study proposes a model of a light module with an optimized luminous intensity field for realizing an antiglare light-emitting diode (LED) desk lamp without a second optical element. We simulated different luminous intensity field profiles to analyze the unified glare rating (UGR) and illumination uniformity performance of a desk lamp. The spatial effect of UGR and the illumination uniformity affect eye comfort. The light module was set to different beam angles without a second optical element, louver structure, and reflective element on the luminaire to compare different UGRs and uniformity values for evaluating human eye comfort. The simulation and experimental results indicated that the luminous intensity curve for a beam angle of 90° achieved an illumination uniformity of 80% and a UGR of 18.1 at a height of 45 cm, thus realizing a human-friendly antiglare desk lamp.

A Model Is Worth 1,000 Pictures: Applications of 3D-Modeling in Skull Base Surgery Neuroanatomy Education

2020 ◽  
Author(s):  
Christopher S. Graffeo ◽  
Avital Perry ◽  
Lucas P. Carlstrom ◽  
Michael J. Link ◽  
Jonathan Morris
Keyword(s):  
Skull Base ◽  
3D Modeling ◽  
Skull Base Surgery

The Reconstruction Project of Illumination Devices at the Krasnoselskaya Station of the Moscow Metro

2019 ◽  
pp. 59-66
Author(s):  
Ksenia I. Nechaeva
Keyword(s):  
Cultural Heritage ◽  
Historical Analysis ◽  
Metro Station ◽  
Heritage Sites ◽  
Passenger Transportation ◽  
Fluorescent Lamps ◽  
Current State ◽  
Heritage Site ◽  
Lighting Environment ◽  
Incandescent Lamps

The current state of the Moscow Metro station of the first priority that became operational in 1935 does not allow it to be called a cultural heritage site. This is due to the fact that lighting modernisation carried out by the Moscow Metro was based on fluorescent lamps. Such lamps are more energy efficient compared to incandescent lamps, which were used in original lighting devices specified in the Station Lighting Project developed by architects and designers. However, they significantly changed the station appearance, transforming the originally designed station with entire well visible architectural tectonics?1 from the standpoint of lighting into a simple, flat, unremarkable, and little loaded station of the Moscow Metro./br> This paper describes a method of lighting reconstruction at Krasnoselskaya station by means of original lighting devices that meet modern standards and requirements for cultural heritage sites. The historical analysis on the development of the station lighting environment was conducted during its operation in order to understand what kind of station was conceived by its architects, what changes occurred with its lighting over time, and how it influenced the station appearance and safety of passenger transportation.

Multi-rating Electronic Ballast for Fluorescent Lamps based on Operating Frequency Determination

2011 ◽  
Vol 131 (10) ◽  
pp. 1184-1192
Author(s):  
Piyasawat Navaratana Na Ayudhya ◽  
Sumate Naetiladdanon ◽  
Anawach Sangswang
Keyword(s):  
Operating Frequency ◽  
Electronic Ballast ◽  
Frequency Determination ◽  
Fluorescent Lamps

3D modeling of the vascular system

2016 ◽  
Vol 1 (1) ◽  
pp. 51-58 ◽  
Author(s):  
Jean François Uhl ◽  
Maxime Chahim ◽  
François Cros ◽  
Amina Ouchene ◽  
◽  
...  
Keyword(s):  
Augmented Reality ◽  
3D Modeling ◽  
Vascular System ◽  
Arterial System ◽  
Chronic Venous Disease ◽  
Venous Disease ◽  
Software Products ◽  
Operative Planning ◽  
Morphological Modeling ◽  
Pre Treatment

The 3D modeling of the vascular system could be achieved in different ways: In the venous location, the morphological modeling by MSCT venography is used to image the venous system: this morphological modeling tool accurately investigates the 3D morphology of the venous network of our patients with chronic venous disease. It is also a fine educational tool for students who learn venous anatomy, the most complex of the human body. Another kind of modeling (mathematical modeling) is used to simulate the venous functions, and virtually tests the efficacy of any proposed treatments. To image the arterial system, the aim of 3D modeling is to precisely assess and quantify the arterial morphology. The use of augmented reality before an endovascular procedure allows pre-treatment simulation, assisting in pre-operative planning as well as surgical training. In the special field of liver surgery, several 3D modeling software products are available for computer simulations and training purposes and augmented reality.

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