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Light Measurement Unit

Light Measurement Unit

Light Measurement Unit:

Candela:

A candela is the light intensity given in a particular direction from a monochromatic light source with a frequency of 540 ter Hz, with a radial intensity of 638 watts per acre.

Usually the intensity of brightness or amount of light in a particular direction is determined by the candela.

For example, a regular candle with a very high approximation of a candle has a light intensity and the light intensity of a 40 watt bulb is about 35 candles.

Estradian (sr):

In the International Standard System of Units, the unit is the spatial angle unit.

Estradians use three-dimensional space to describe two-dimensional angles, just as radians are used to describe angles in two-dimensional plates.

What is a lumen (lm)?

The unit of measurement is the luminescence (lm). In fact, the amount of light emitted from a point source to a candle inside a cone at the apex angle of a strand is called a lumen.

It’s called a Luminous Flux, which we display with Fi [Φ].

What is lux?

The amount of light applied to the surface or the amount of surface brightness. Its unit is lx.

And by dividing Lumen’s level by the level of luxury. The lux difference with Candela is that it has to do with distance and area. The higher the light source distance from the surface, the lower the Lux value as the total or Lumen brightness is scattered to a wider surface.

But Candela has nothing to do with distance, since the angle of the extrusion is at the denominator of the fraction whose definition is constant.

As we said, the definition of the extradition of the target area is the light source on a circle with a radius of one meter. If the surface area of ​​interest from the light source is 2 meters, the value of Candela and Lux ​​is the same because the area under the Lux fraction is equal to the amount of extradition.

What should be done to measure the lumen value?

This calculation is a specialized task and is measured and calculated by specific light meter devices. The total amount of light output flux that is visible to us is to measure the intensity of the light emitted by a source at a small surface within one meter, then multiply by the area and integrate over the entire closed surface.

For example, a candle on the dining table emits approximately 12 lumens and a 60 watt bulb approximately 855 lumens of light.

What is the color temperature (Kelvin)?

Color temperature is expressed as the color of a black body at a given temperature and is expressed in degrees Kelvin.

A color temperature above 4000 ° C is defined as cold light and a color temperature below 3000 ° C is defined as warm light.

A light meter is a luxury meter for measuring light in the environment, which is used in photography, scene design, hse engineering, poultry farming, greenhouses, etc.

Lux meters are exposed to light and have a sphere of butter. The intensity of the light is measured by the instruments in this sphere of the sphere.

What is the difference between a light unit (lumen) and a power unit (watt)?

The first question that comes up in the lumen study of the mind is the difference with the power unit.

We use power unit abundantly in the study of sound and other energies, but they are rarely used in light analysis.

The reason is that the human eye, unlike other sensors, exhibits a completely non-linear behavior with respect to the intensity of light (see “What is the effect of light and the efficiency of light?”), So we analyze Light intensity Instead of examining the output power of a light source, we consider some of the brightness visible to the human eye (to some extent).

Arend Lighting Company

What is an elastic roof?

What is an elastic roof?

What is an elastic roof?

First elaborated by Barisol, the elastic ceiling is one of the most modern types of false ceilings in the building interior. This technology is used today in many countries of the world, including Iran, which is very economically viable.

In this article, we are going to introduce you to the elastic ceiling and introduce the type of elastic roof, the advantages and the types of fabrics used in it, and finally the elastic roof tile, its components and the types of lighting used. Let’s check it out.

Elastic fabric
This roof has special features that can be used in interior layout design.

Although this type of coating carries the name of the ceiling, but not just the roof, it can be used as a wall covering, or as a cover for 3D objects or appliances. Board used for interior decoration suspended.

The stretch ceiling is made of PVC fabric with 90% PVC and 5% plasticizer and 5% permitted additives.

The plasticizer in the elastic ceiling allows the roof to be flexible and elastic. That is, by heating the fabric, it can be stretched to the desired size.

As mentioned above, the main material of the PVC elastic ceiling is fixed by the retaining clamps located on the sides of the rails, and the PVC fabric is fixed to the ceiling and prevents deformation.

This type of coating has a thickness of 0.18 to 0.25 mm and weighs about half a kilogram per square meter but can withstand a maximum of 200 kg.

The fabric used on the elastic roof is lightweight and thin building material.

Due to the presence of zinc oxide which destroys bacteria and fungi, it is considered antibacterial and is completely safe and fire-proof due to the presence of chlorine in its formulation. Its types are transparent, semi-transparent, matte and glossy.

Features of this fabric is that it is capable of high quality printing and can create a beautiful combination of design, color and model.

This new technology is highly customizable and can be used simultaneously in a variety of residential, commercial, industrial and exhibition spaces.

Properties and Benefits of an Elastic Roof

Antibacterial and Anti-Dust Properties:

Elastic roofs do not produce dust unlike traditional roofs, and also prevent dust from transmitting behind the roof.

Materials used in the production of these ceilings, such as zinc oxide, prevent the growth and proliferation of bacteria and fungi. For this reason, stretch ceilings are suitable for use in medical facilities such as hospitals, operating rooms and laboratories.

Robust, high weight to withstand possible falls:

These roofs are flexible and secure in the event of an accident (earthquake, material collapse).

These products are guaranteed against loads up to 150 kg / m 2.
Unique Beauty: This ceiling can be used to design the desired decor. In fact, you can turn your imagination into design with elastic ceilings.

Anti-ignition:

Elastic roof is resistant to ignition. That is, it does not ignite against fire and is so-called refractory. It also prevents the spread of fire.
High installation speed with no need for cushioning: Customer can deliver your order within one to three days.

Movable:

If you need the space behind the roof, you can open and close the roof in the shortest possible time. These ceilings can also be moved. If the client moves to a new home, the roof can be opened and reinstalled in the new home.

Covering Plumbing, Wiring, Decay, and Roof Damage: Because the elastic ceiling is a type of false ceiling, it is installed slightly below the main roof, covering all roof failures, fitting paths, pipes and wires.

Electricity draws. An effective feature of elastic ceilings is that they are waterproof so they are suitable for use in wet areas such as pools, bathrooms and bathrooms.

It also helps prevent water leakage in cases such as water pipe bursting, leakage of pipes, and preventing possible damage from water leaks inside the building.

 Soundproofing capability:

Materials used in tensile roofing are sound insulation. Therefore, they are ideal for conference rooms, audio recording rooms, concert halls and so on.

Ability to print in a wide variety of colors:

The elastic fabric of the ceiling is capable of printing in a variety of colors that can best match the ceiling with walls, floors, furniture and furniture.

Enlargement and Reflection of Ambient Images:

The Lacquer ceiling is one of the types of elastic ceilings and reflects the images of the environment due to its very smooth surface and mirror. This feature magnifies and gives us visual depth.

Common types of elastic roof coverings

Common and elastic coatings can be opaque, satin, lacquer or mirror, lightweight and textile.

Mirror Elastic Ceiling:

This type of roof, also known as glossy or transparent, has the most distribution and passage of light. Therefore, more light passes through it.

Matte elastic ceiling:

The light distribution is perfectly uniform and has less light transmittance than the glossy ceiling. It also covers the light source perfectly and is best used for simple designs.

Elastic Roof Ceiling:

This type of roof, also known as the transparent type, has the most transparency for light to pass through. This type of coating is used extensively for space that requires natural light to pass through.

Satin stretch ceiling:

The middle is between the glossy and matte finish. The amount of light passing through this type of fabric is relative and is very common. Elastic roofing is one of the most expensive coatings that have a very specific texture and texture and are used for luxurious and stylish spaces.

All introduced coatings can be printed on elastic roof coatings. The relatively low width is a problem that has been faced with stretch ceiling printing before. This problem is solved by UV printing machine.

In other words, the first printing machine in Iran with a width of 5.30 meters is a UV machine that can print seamlessly on the roof in large construction projects. These prints are made in the shortest possible time and in the best quality.

 

Elements used in elastic roofing

The elastic ceiling or virtual sky consists of three sections of virtual sky structures, lighting structures, and virtual sky tiles.

  • Virtual Sky Structure: A false ceiling should be built around the elastic ceiling. In addition, the virtual sky structure requires a false lattice ceiling. The false grid ceiling is placed at a certain distance from the lighting structure.
  • Virtual Sky Lighting Structures: If good and accurate lighting is done, it will make the virtual sky look more natural. It uses three types of FOL, T5, LED and T4 lamps and mounts directly to the main roof.
  • Elastic Roof Tile: The presence of tile in virtual sky structure is the most important difference between virtual sky and false ceilings. Virtual tile printing is done in both direct and indirect ways and in permitted sizes. Different images can be printed on the tiles. The size of the virtual sky tiles depends on the budget and space of the customer.
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PANEL LED

PANEL LED

PANEL

PANEL LED : AREND has developed LED panels with an approach for lighting public spaces with a different design and variety in theirinstallation.

The variety of dimensions and the adaptation of the luminaires characteristics according to the needs of customers is another benefit of this family of products….

PANEL LED FOR AREND

SHAYAN LED:

 

A suspended LED luminaire, flat direct LED with PS diffuser ceiling illumination

. (IP42 just for options). For 600 x 600 mm squarebaffle ceiling.

Total power: 60 w, slave luminaire for DALI control(an option only) with LED converter.

Chromaticity tolerance (initial MacAdam: 3).

Luminaire luminous flux: 5460 lm, Luminaireefficacy: 91 lm/w.

Color rendering Ra > 80.

It can be produced with deferent power (30 w , 45 w and 60 w) and different color temperature (3000 and 4000 kelvin).

 

GAMMA LED:

 

 

A ceiling recessed edge light LED luminaire with a slim 14 mmprofile.

Flat direct LED with polystyrene diffuser ceilingillumination.

(IP42 just for options). Total power: 40 w.

slaveluminaire for DALI control (an option only) with LED converter.

Chromaticity tolerance (initial MacAdam: 3). Luminaire luminousflux: 3600 lm.

Luminaire efficacy: 90 lm/w. Color rendering Ra > 80.

color temperature 3000 – 6000 kelvin.

This product can be produced in different dimensions.

 

PERANSA LED:

 

 

Luminaire was designed to be used white LEDs for illumination purposes can be surface mounted and ceiling suspended .

Wideand uniform light distribution for decorative application.

Downlight luminaire with 100 w warm white and cool white LEDs forindoor applications.

Robust luminaire housings made fromaluminum.

Diffuser is polycarbonate. All LEDs are within a three step MacAdam ellipse to ensure color consistency.

Energy saving is up to 90% in comparison with traditional light sources.

 

Arend Lighting Group

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IRANMALL LED

IRANMALL LED

IRANMALL LED

 

Iran Mall

Scale : Mega Project
Employer : IMCC | Iran Mall Commercial Company
Start date and end : 2015 – 2018
Description : Iran Mall is the biggest shopping mall in the Middle East that is under construction in the northwest of Tehran city near by Chit-gar Lake.

this project spans more than million square meters that includes of some 1000 shoppers.Iran Mall is one of the biggest shapping malls  in the word. we are proud to work s bbig project.

AREND’s light are the used in different parts of the mall. These parts include parking, landscape, exhibition, mosque, food curt,…

The light used are , Neptune, Sepehr, Paydar, Amin High Bay, Shayan, Maxim, Lina, Azin, Arevik vella, Liosa Linear and Deco , Peransa.

 

IRANMALL LED FOR

Food Court:

There are two food trucks, one on the first floor and the other on the third floor, which are used for lighting Arend’s helia lights.

 

 

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The mosque :

One of the first places of interest on the first floor of the mosque is the Prophet Muhammad (PBUH), which has two entrances and has been used as LEI lamps.

 

Parking :

 

It’s free to the public and has a capacity of 20,000 cars and motorcycles lit by Neptune lights.

And at the exhibition, a variety of lights were used.

 

 

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Iranmall Musical Lake:

 

Arend is proud to produce, execute, and install a light fixture that supplies lighting around the Iran Lake Musical Lake. The production and production of the Azin light was commissioned by Iran Mall and was entirely done by Arend Engineering team.

 

arend 

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Industrial led

Industrial led

Industrial led

 

AREND industrial lights have been developed with a completely different design and the smell of modern architecture for industrial space. These types of luminaire can be installed in industrial and some special spaces with high intensity of light and several light distribution

Industrial led:

 

1.Amin

 

– High bay:

A modern and efficient LED pendant luminaire. Single point pendant LED high bay luminaire with medium beam optic (and adjustable beam angle in an option).

Electronic, fixed output control gear, programmed for constant light output operation.
Class I electrical, IP54, IK05.

Housing material: extorted hard anodizing aluminum body. Lens: polycarbonate.

Equipped with
quick fit electrical connection. Color rendering Index: 80. Choice of color temperature: 3000 – 6000 kelvin.

 

amin high bay

 

-Flood:

A modern and efficient LED pendant luminaire. Single-point pendant flood light luminaire with medium beam optic

( and adjustable beam angle in an option). Electronic, fixed output control gear, programmed for constant light output operation.

Class I electrical, IP65, IK05. Housing material: extorted aluminum body.

Lens: polycarbonate. Equipped with quick fit electrical connection.

Color rendering index: 80. Choice of color
temperature: 3000 – 6000 kelvin.

 

 

 

 

 

 

 

2.Neptune:

 

Anodize aluminum body and polycarbonate cover material. Suitable for use in ambient temperatures ranging from-25ºC to 50ºC.

Choice of color temperature: 3000 – 6000 kelvin. Up to 50% energy savings compared with TL-D direct replacement for proof luminaires in terms of light performance, installation flexibility and length.IP65 [dust penetration-protected, jet-proof] wide-beam angle light distribution.

Diffuser with optical element ensures visual.

Comfort ceiling-mounted bracket and suspension hooks included; installation can be made water-proof by additional screw fixation of mounting brackets.

It can be produced in the lengths of 600 , 1200 and 1500 mm.

 

 

 

 

 

 

 

Arend Lighting Group

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UNDER WATER LED

UNDER WATER LED

UNDER WATER LED

 

The LEDs have a service life of 100.000 hours as opposed to 1.000 hours for conventional lamps and each LED spotlight savves upwards of 90% in power consumption.

 

Arend is proud to produce, execute, and install a light fixture that supplies lighting the Iran mall Musical Lake.

under water led lights from arend:

 

LINA:

1-Lina Onefold

2-Lina Affiance

 

Lina Onefold:

Underwater floodlights for the illumination of ponds, water pools and water features in private and public areas. The luminaires can only be operated under water. To avoid harmful deposits and dirt on the luminaires, the water must have a neutral pH value and must be free of components that attack metal. The free standing underwater LED lights can be used with a variety of fountain nozzle to give spectacular colors to water with its mono color or RGB color changing technology. Ideal for sequenced fountain as the DMX controllability provides additional control for choreographed sequencing effects and virtual effects with water. Available in white LED as on/off control for non-sequencing fountains. Optional rock guard is available on request. Steal 316 body material. For the installation and operation of these devices, safety regulations must be complied with.

 

 

Lina Affiance:

Underwater floodlights for the illumination of ponds, water pools and water features in private and public areas. The luminaires can only be operated under water. To avoid harmful deposits and dirt on the luminaires, the water must have a neutral pH value and must be free of components that attack metal. The underwater Ring LED lights can be used with a variety of fountain nozzles with its large central opening of 61mm diameter. As the nozzle sits centrally within the light, the water jet is completely illuminated. Ideal for sequenced fountains as the DMX controllability provides additional control for choreographed sequencing effects and virtual effects with water. Steal 316 body material. For the installation and operation of these devices, safety regulations must be complied with.

 

 

Arand Lighting Group