Good Lighting Design Research Articles

Design and Development of task light simulator for Quality Lighting Factor and Simulation of LED tubebased Illumination system for Laboratory

Daylight is only the natural light available surrounding us which is mostly useful in outdoor use. Artificial lighting is used to a greater extent in the world for a variety of indoor as well as outdoor applications. The fundamental requirement of light is to see the objects in a dark time. Nowadays powerful light sources are developed to fulfill the fundamental requirement and the quality illumination. Quality lighting provides uniform distribution in space, good color rendering, and adequate light. The requirement of every task is different and the quality of lighting depends on a number of factors, so there must be a database available that will provide recommended values for a given task. Though there are several simulation software available for analysis of illumination, they are able to provide only information of illumination pattern based on user inputs. There is a need fora user-friendly GUI (Graphical User Interface) which provides necessary parameter values for good lighting design and spectral power distribution of different LED (Light Emitting Diode) sources. The main aim of this work is to model and simulation of spectral characteristics of monochromatic and white LED. Develop a MATLAB-based GUI to select recommended values for different tasks according to Illuminating Engineering Society (IES) standards which helps lighting designers for selection of proper light sources. Uniform illumination is obtained and energy is saved by the integration of daylight with artificial light. A case study of LED tube-based glare-free illumination for the laboratory is also reported

Spatial and spectral illumination design for energy-efficient circadian lighting

Daily light-dark patterns incident on human eyes play an important role in maintaining a healthy circadian rhythm. The lack of daytime light in indoor spaces could negatively impact the occupants’ health and well-being in the long term. Therefore, applying circadian lighting in certain built environments is attractive.In this work, we introduce innovative methods for circadian lighting design and investigate the potential of efficacy improvement by comparing these methods with traditional lighting design approaches. For the spatial aspect, we show that the regular lighting design approach focusing on horizontal workplane illuminance could lead to a very inefficient delivery of indirect corneal illuminance compared with the proposed method of distributing initial flux to a highly reflective room surface; for the spectral aspect, it is shown that the traditional approach of pursuing high luminous efficacy could potentially lead to the worst-case scenario for circadian efficacy based on a four-component color-mixing analysis. Two leading spectral sensitivity models for the circadian system (i.e., the CLA model and the EML model) are compared, each of which leads to different trends of spectral circadian efficacy versus color temperature but the same strategy for spectral optimization. Based on the analysis in both the spatial and spectral aspects, a framework of efficient circadian lighting solutions is proposed to guide new good lighting design with health benefits. It is shown that the proposed new approaches can potentially improve the overall circadian lighting efficacy by up to 3.6 times.

Colour Light And Wellbeing: A Case Study Of M Mall 020 George Town, Penang Island

Contrary to popular belief, the brightest light or the most colourful light makes good lighting design. However, what makes a good lighting design in interior space is an impeccable composite of art and science. With the application of good lighting design, it can produce an impressive result from enhancing the aesthetic of architectural elements to conveying the right type of ambiance of the interiors. This research intends to address the crucial issues regarding the ways in which lighting designers can communicate the benefits of good lighting and to create a better awareness to users. The objectives of this paper are to outline and explore the features of good and poor lighting design in M Mall O2O based on the lighting design language and profession. The results of this research are mainly qualitative in nature, supported by the professional lighting designers on the definitions of good lighting, personal observation and visual data which were taken in George Town, Penang Island. The case studies on good and poor lighting portrayed in this mall were used as examples to scrutinize the issues raised herein. To achieve the optimum lighting design, a joint approach of focusing on the artistic flair brought forth by lighting and more scientific effort on the calculation levels of lights is crucial. Different functionality requires a different amount of attention on either approach. In conclusion, a good lighting design must be able to enhance the atmosphere and also enrich the quality of the interior architecture. Apart from that, a good lighting design should have good distribution of brightness levels, contrast and different colour temperatures to enhance characters of the interior spaces without neglecting the health and wellbeing aspects.

Portrait Lighting Transfer Using a Mass Transport Approach

Lighting is a critical element of portrait photography. However, good lighting design typically requires complex equipment and significant time and expertise. Our work simplifies this task using a relighting technique that transfers the desired illumination of one portrait onto another. The novelty in our approach to this challenging problem is our formulation of relighting as a mass transport problem. We start from standard color histogram matching that only captures the overall tone of the illumination, and we show how to use the mass-transport formulation to make it dependent on facial geometry. We fit a three-dimensional (3D) morphable face model to the portrait, and for each pixel, we combine the color value with the corresponding 3D position and normal. We then solve a mass-transport problem in this augmented space to generate a color remapping that achieves localized, geometry-aware relighting. Our technique is robust to variations in facial appearance and small errors in face reconstruction. As we demonstrate, this allows our technique to handle a variety of portraits and illumination conditions, including scenarios that are challenging for previous methods.

Portrait Lighting Transfer Using a Mass Transport Approach

Lighting is a critical element of portrait photography. However, good lighting design typically requires complex equipment and significant time and expertise. Our work simplifies this task using a relighting technique that transfers the desired illumination of one portrait onto another. The novelty in our approach to this challenging problem is our formulation of relighting as a mass transport problem. We start from standard color histogram matching that only captures the overall tone of the illumination, and we show how to use the mass-transport formulation to make it dependent on facial geometry. We fit a three-dimensional (3D) morphable face model to the portrait, and for each pixel, we combine the color value with the corresponding 3D position and normal. We then solve a mass-transport problem in this augmented space to generate a color remapping that achieves localized, geometry-aware relighting. Our technique is robust to variations in facial appearance and small errors in face reconstruction. As we demonstrate, this allows our technique to handle a variety of portraits and illumination conditions, including scenarios that are challenging for previous methods.

Portrait lighting transfer using a mass transport approach

Lighting is a critical element of portrait photography. However, good lighting design typically requires complex equipment and significant time and expertise. Our work simplifies this task using a relighting technique that transfers the desired illumination of one portrait onto another. The novelty in our approach to this challenging problem is our formulation of relighting as a mass transport problem. We start from standard color histogram matching that only captures the overall tone of the illumination, and we show how to use the mass-transport formulation to make it dependent on facial geometry. We fit a three-dimensional (3D) morphable face model to the portrait, and for each pixel, we combine the color value with the corresponding 3D position and normal. We then solve a mass-transport problem in this augmented space to generate a color remapping that achieves localized, geometry-aware relighting. Our technique is robust to variations in facial appearance and small errors in face reconstruction. As we demonstrate, this allows our technique to handle a variety of portraits and illumination conditions, including scenarios that are challenging for previous methods.

Energy efficient lighting for the biological clock

Unexpectedly the existence of a formerly unknown type of photoreceptor in the human eye has been proven about 10 years ago. Primarily sensitive in the blue spectral range it is responsible for transducing light signals directly into the brain, controlling essential biological functions like setting of the circadian clock or daytime activation. Recent scientific research has enabled beneficial applications. The paradigms for good lighting design are shifting and standardization activities have been started to build up a sound base for description and application of biologically effective lighting. Latest improvements of LED technology are now allowing realizeation of advanced lighting solutions based on SSL. Optimization of biological effects is possible while demands on good vision are maintained. As biologically effective lighting is addressing a second system besides vision in the human body a measure beyond lumen per watt is required for a proper description of energy efficiency.

Hazardous area lighting, temperature considerations, new protection methods

This article focuses on the reduction in light output as the lamp ages and the qualities needed for safe lighting. Good lighting design is further challenged when the area is a hazardous area. Because a luminaire is considered an ignition source, it is essential to consider proper temperature and, at the same time, maintain sufficient lighting in hazardous areas. New protection methods and new technologies afford designers new choices and flexibility. The objective of good lighting design for hazardous locations is to sustain longer lumen levels and improve the performance of the lighting system. This article will cite new protection methods and light source technologies and their effect on lighting layouts and illumination levels.

A demonstration of energy-efficient lighting in residential new construction

,!This field study uses a new model home demonstrating good lighting-design principles with energy-efficient solutions. Surveys showed that builders and the general public accepted and even preferred the appearance and the lighting effects of energy-efficient lighting technologies. Key to the success was integration with architectural features, colour schemes, and user lifestyle. Detailed survey results, energy savings, and illuminance comparisons are presented, as well as a discussion of ongoing barriers to the use of energy-efficient technology. Designers share ‘lessons learned’ from this design case study.

Health and efficiency in lighting practice

Improvements in the energy efficiency of lighting should be made with due consideration of their impact on human visual performance and health. The improvement in efficiency is unlikely to have adverse effects, except when gas-discharge lighting is used with low-frequency control circuitry to replace incandescent sources. Good lighting design practice, particularly the use of daylight, can improve health without compromising efficiency. Concerns about the detrimental effects of uneven spectral power distribution and low-frequency magnetic fields are not as yet substantiated.

A Methodology for Teaching Interior Illumination: A Paper Presented at the Annual Conference of the Interior Design Educators Council, April 1982

Ultimately, the most important objective for the student is to develop a good understanding of the need to balance all the factors that can influence any lighting installation. For the designer, the engineering calculations should never become the primary consideration, but they must be considered as a major part of the final solution. Thus lighting becomes a matter of balance between quantity and quality, that is between science and art. The teaching procedures should make the student aware that through good lighting design he can not only provide a sufficient quantity of lighting, devoid of glare and veiling reflections, but also he/she should realize that lighting can be a useful tool; with the capacity for influencing interior environments as much as color, material textures, furnishings, and spatial forms.

Industry

Colour assessments must obviously be made under carefully controlled conditions of illumination and viewing if there is to be agreement between all those concerned in the various stages of the reproduction process. The British Standards Institution therefore implemented BS 950 ‘Artificial daylight for the assessment of colour’. The latest report issued on the work of the Pira/ UK Colour Printing Council is designed to assist in the installation of lighting, particularly where colour assessments are necessary. It explains the importance of good lighting design and how to implement the British Standard. The report is entitled ‘Guidelines on the selection of lighting for colour assessment in graphic reproduction’.

Electrical space conditioning in the USA

'Electrical space conditioning' expresses the need to consider control of all factors influenced by modern building lighting. When the criteria of good lighting design are established, attention can be turned to controlling and using the heat generated by lighting. Examples show that modern lighting installations introduce sufficient energy to largely counterbalance building energy losses in cold weather. In warm weather the energy introduced from the lighting, together with heat gains from people, machines and sun, must be controlled. Returning air through luminaires not only brings thermal gains under control but does much to offset radiant heating effects. Typical installations using electrical space conditioning principles are analysed and the range of systems that can be usad is indicated.