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Istanbul based Lighting Design Firm Planlux Opens Branch in London

Doğan Kozan

Turkish lighting design firm Planlux to expand beyond its home base Istanbul, as frontier in Turkish lighting design field for more than 10 years, launched namesake firm in London in 2018. With an expanding international client base led by director Doğan Kozan. 

Firm believes on Doğan’s is a talent and experience on the sector to develop more oportunities on one of the most importand cultural and commercial hubs of the world. 

As a practice, aimed for a combination of creativity, efficiency and expertise Planlux focuses to provide a joyful lighting design project experience balancing the time, budget and quality. 

Planlux team believes  continous face to face interction with its clients to be a part of the projects they are involved in.

Doğan says; ‘Planlux’s skill and quality has been proven with 10+ years of background. Now with our combined experience and skill, we’re very positive that Planlux UK will take part in landmark projects all around the globe.
London is the capital of design and innovation in Europe and also a gateway to other regions like Middle East, East Asia, South America, etc. And we’re very excited to be a part of this network.’

London is the firm’s first satellite location to be a mailestone to reach further markets in the future.

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Natural Light

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Lighting designer’s main source is natural light. Sun is a natural source and it has sustainable unlimited energy. In this article series, we want you to inform about natural light more. Let’s begin with ‘What is Natural Light’.

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Light inspires us and enriches the spaces. The ever changing presence of natural light in a building is delightful and inspiring. Natural light tells us about the weather,  the time of day, and satisfies other deeply rooted in our psychological needs. Simply ‘Natural light can enhance architecture, improve the way people feel.’

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Please read about how leCorbusier has played masterfully with orientation, openings and textures to create kinetic architecture with daylight.  

https://www.archdaily.com/597598/light-matters-le-corbusier-and-the-trinity-of-light


“Architecture appears for the first time when the sunlight hits a wall.
The sunlight did not know what it was before it hit a wall.”
― Louis Kahn


The benefits of natural light are so valuable that we often have to discuss the health and economic related aspects.  Some searches in 2000’s  in numerous schools and retail stores in USA indicated that quality daylight does enhance the learning (measured by academic test scores) and shopping (yearly growth in scales).  As lighting designers we often ‘try’ to mimic these feelings with artificial light.  

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Nowadays with the development of light sources, high end control systems powered with connected technologies, we can easily and more ‘economically’ focus on some applications such as color temperature, light colors and intensity changes in our built environments. But we have strong doubt because we realise how little we really know about light and how we perceive it, we behave accordingly.    This is a discomforting topic; A way of using ‘latest’ technology in both artificial and natural lighting systems has become a ‘necessity’.

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Lets focus on the natural and learn more about how we can benefit from daylight more.

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Natural light in buildings can provide ambient illumination which will reduce the usage of electric light. This lowers energy consumption and reduces the generation of ‘pollution’. These benefits alone often are sufficient justification to include natural light in a building’s design. Great lighting design also relies on using natural light effectively.  

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We have really great samples daylight architecture throughout our civilizations. We need to re focus on them.
Unfortunately, there are many unsuccessful buildings which are designed with misapplication of natural light. Sometimes, natural light can be difficult to control. It can cause of result as excessive heat gain, uncomfortable glare, and degradation of artwork and materials. Building orientation is too often ignored, facades and openings are designed without regard to daylight.

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To successfully design with natural light, place the light where needed. Avoiding disturbing contrasts, glare, unwanted heat gain is possible with focusing on the design considering natural light.  The integration of natural light and artificial light into buildings can create delightful luminous environments.

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The primary objective of natural light where we will define as ‘daylight systems’ is to maximize use of daylight for buildings.  To use daylight effectively first assess its availability. The quantity and quality of light available for illumination in a building are determined by the regional climatic conditions. Available daylight patterns are modified by factors such as adjacent landforms, vegetation and structures.The varying light conditions different perceptual environments and architectural responses.

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Three basic sources of natural light are:
Daylight,
Sunlight,
Reflected Light  
Next article: “Sources of Natural Light; Daylight”.

Sources:

Book: Architectural by M. David EgLighting an and Victor W. Olgyay (2nd Edition)

https://www.haaretz.com/middle-east-news/turkey/.premium.MAGAZINE-istanbul-salutes-a-great-jewish-american-architect-1.5824778

http://antinousgaygod.blogspot.com/2016/04/hadrians-pantheon-becomes-sundial-for.html

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If we want to know more about light, we should start know the basic metrics to describe ‘light’. Let’s make it as simple as wecan.
There are different units for measuring quantity of light and it sometimes can get complicated.

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Luminous flux is defined as the time rate of flow of light. The amount of total luminous energy – light emitted from a source in unit time is measured in lumen.  It does not imply direction, distance, or intensity. Simply the total light output of a source.   The more lumens the fixture or the source gives off, more light it emits.

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The force of the luminous flux in a specified direction is luminous intensity. Luminous intensity measures the strength or (we rather to called it as) “punch” of a light source in a specific direction  Very often, a light source will have different intensities when measured at different directions.

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Measured in candelas (lumen / stredian), the luminous intensity of a light source is commonly shown on a candlepower distribution curve.   The polar axis on this chart graphically indicates the luminous intensity in any given direction from the source position.

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Clue: You can find most of the successful luminaire producers share their products candlepower distribution curves for you to understand the basic light distribution characteristics of the luminaire you are planning to use. An experienced eye can understand how light will behave with looking to these polar distribution intensities.

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The intensity of light falling to a surface in unit time is called Lux, in which is also called as illuminance. Illuminance is the density of incident on a surface. Simply how much light is hitting a surface. It changes according to the distance and angle of the surface.  It can be measured inexpensively by a lightmeter called luxmeter.
We can easily measure amount of light falling to a surface.

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Density of light varies according to the distance and the angle to the square of the distance.
That is called inverse square law.

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Inverse square law – S represents the light source, while r represents the measured points.

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We do not see illuminance when a surface is illuminated we see its brightness defined as Luminance. Luminance, is measured brightness which is defined as the intensity of visible brightness of a source or surface in the direction of the observer, divided by the area of the source or surface seen. The specific way the light comes off of a surface. It allows us to see things. The unit is candela/squaremeter .

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The perceived brightness of an object depends on the light reflected from itself and its background, brightness adaptation. Its brightness relative to other objects appears the same in bright light or dark.

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