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LED interior lighting knowledge



Lighting Unit

1, the luminous flux:

Light source in the unit of time, the surrounding space radiation and cause visual energy, called flux, with Φ expressed in units of lumens (Lm).

2, the light intensity:

Light source in a particular direction unit solid angle of radiation flux, called light in the direction of the luminous intensity, referred to the light intensity. The symbol I represents, in candela (Cd), I = Φ / W.

3, illumination:

Unit of luminous flux received on surface processes called illumination, represented by E units lux (Lux), E = Φ / S.

4, Brightness:

Luminous body in a given direction unit projected area of the luminous intensity is called brightness, represented by L, unit candela per square meter (Cd / m).

5, Color temperature:

When the light source color and a black body heated to a temperature that issued to the same color, the color temperature of the light source is called, referred to as color temperature.

LED lighting unit price direct conversion relationship

1 lux = 1 lumen luminous flux uniformly distributed in one square meter area of illumination

1 lumen = 1 candela of luminous intensity point light source, the unit solid angle of emission flux

1 lux = luminous intensity of 1 candela point source radius of 1 meter in the sphere of the illuminance produced

Design concept

The emergence of LED light sources designed to break the traditional methods and ideas, there are two kinds of the latest design concepts.

1, scene lighting: It is 2008 scenario proposed by Philips Lighting, the environment needs to design lamps. Mood lighting in place as a starting point, designed to create a beautiful, brilliant light environment, to heighten the effect of the scene, people feel there is a scene atmosphere.

2, mood lighting: COSIO proposed in 2009 by the mood lighting to the needs of people to design lighting. Mood lighting is human emotion as the starting point, from a human point of view to create a mood like lighting environment. Mood lighting and scene lighting is different, mood lighting is dynamic, to meet the spiritual needs of people lighting the way, people feel a mood; while the scene lighting is static, it can only emphasize the scene illumination needs, and can not express people's emotions, in a sense, mood lighting cover lighting scenarios. Mood lighting includes four aspects: First, green energy, two are healthy, three are intelligent, four are humane.

"Mood lighting book", is the first Chinese to lead the trend of LED lighting design books, design theory has long been breaking the monopoly of foreign giants, making it easier for the LED application market needs. The latest contribution mood lighting design ideas to share with you, to hope that more experts and scholars, designers participate in discussions and recommendations.


1, home lighting configurations and requirements:

① Living room:

Main light, LED downlight, LED ceiling spotlights, LED according to art lights, LED wall lamp, LED floor lamp, LED lamps, LED lights outline

② Restaurant:

LED pendant LED, according to art lights, LED bar table lamp

③ Bedrooms:

LED bedroom lights, LED wall lamp, LED mirror front lamps, LED bedside desk lamp,

④ Study:

LED chandelier, LED ceiling lamp, LED work lamp

⑤ children's room:

LED bedroom lights, LED chandelier, LED lamp, LED lamp, LED eye protection desk lamp,

⑥ Toilets:

LED waterproof wall lamp, LED waterproof dome light, LED mirror front lamps,

⑦ Kitchen: LED Kitchen Ceiling Light, LED Cabinet Light

Balcony: LED Ceiling

2, shopping malls and hotels LED lighting LED lighting:

LED downlights, LED spotlights LED Dimmable Light LED Ceiling Light LED Tube LED, LED lamp LED bedside lamp, LED floor lamp, LED lamps, LED lamp,

Common parameters


Light source in unit time is called the light emitted light flux, with φ, the unit name: lm (lumen).

Light intensity

The direction of the light source unit in a given solid angle is defined as the light flux emitted from the light intensity in that direction, denoted by I.

I = specific angle of luminous flux Ф ÷ specific angle Ω (cd / ㎡)


Luminous body in a given direction per unit solid angle per unit area of the flux. Represented by L. L = I / S (cd / ㎡), cd / m 2, also known as luminance.


The luminous flux per unit area by using E said. Lux (Lx)

E = dФ / dS (Lm/m2)

E = I/R2 (R = light to be illuminated plane distance)


When there is a light (thermal radiation source) emitted from the light color temperature of a full radiator (black body) of the color of light produced, exactly the same, full radiator (black body) temperature, referred to as the color temperature (K) . Color is used to describe the color of light emitted by a luminous body of an argument.


Refers to the color of a light source to the object table (color or texture of the object itself) the impact of this effect is due to the observer consciously or unconsciously it with the reference light (sunlight) under the color produced by a relatively appearances kinds of parameters, said light source color.


Used to accurately describe the color of a light source parameters with Ra represents. Light (sunlight) of CRI Ra = 100, that is, any object in the sunlight irradiation, the object has the most realistic color or texture.

Lighting efficiency

Under the same conditions of use, the total luminous flux emitted light and lighting all the light emitted from the ratio of the total luminous flux, also known as the lamp light output ratio.

Utilization factor

Refers to a work surface that received direct and multiple reflections arrive after work surface with bare total flux emitted by the light source when the ratio of the nominal total flux, expressed by CU.

Maintenance factor

Lighting device in use after a certain period, the average illuminance on the specified surface or the average brightness of the device newly installed under the same conditions on the same surface as the average illuminance obtained in the ratio of the average brightness, in K.

Light efficiency

Unit power on the flux. Symbol η, Unit name: lm / w.


Since field intensity distribution in the suitable range or brightness, or the existence of extreme contrast, hence resulting in a feeling of discomfort or decrease the target's ability to observe the detail or visual phenomenon. Expressed by UGR.

Engineering Applications

LED interior lighting engineering applications mainly in the field of commercial lighting, decorative lighting in the main:

1, high-grade specialized stores, shopping malls and other indoor commercial lighting atmosphere

Energy saving, no UV, meet some businesses show personalized light environment psychology, became some businesses for some special products of choice for light; its full spectrum color range is very suitable heighten the atmosphere of stores and shopping malls, LED light source in the local lighting, accent lighting and area lighting advantages, is able to create other traditional lighting electric light unmatched quality light environment, ideal for commercial lighting. At this time, the price has become a secondary consideration.

2, entertainment, beauty salon lighting

Full color LED integrated light source and easy to control, you can create both static and dynamic lighting effects, from white to a full spectrum of any color, rendering the atmosphere to a strong entertainment, LED to the emergence of such space environment opens up new interior design ideas.

3, bars, cafes and other leisure places atmosphere lighting

LED light source, small size, solid state lighting, gave lighting manufacturers unlimited play space, you can make all kinds of different styles of professional and LED full spectrum of any color and make it static and dynamic lighting effects and manufacture exotic decorative features In this type of place vividly.

4, museums, art galleries and other places of lighting professionals

Museums, art galleries and other places belonging to the lighting environment requires a higher special occasions, special requirements of their display items of lighting without ultraviolet radiation, no thermal radiation. LED is a cold light source, the light does not contain ultraviolet and fully meet the museums, art galleries Particular requirements for lighting.

5, the commercial theater, TV studio dance and photography stage lighting

6, hotel, hotel lighting

Hotels, guesthouses use of LED lighting products, or in the lobby or in the rooms, to the customer to bring a different feel, in addition to energy savings outside, but also full of luxury and warmth of the owners, to create a personalized light environment can fully demonstrate the strength of the enterprise

7, meeting rooms, multi-purpose hall lighting

Intelligent control of the LED color adjustable, can be adjusted according to meeting content in different conference rooms or multi-purpose hall lighting environment, serious or lively and can be freely set, LED intelligent lighting to meet the different needs of the environment the theme of light .

8, exhibitions, fashion shows, lighting

Exhibitions, fashion shows are a business to showcase their products and services space. For businesses, in order to better attract customers, merchandising and eventually reached an agreement, they need personalized light environment to showcase their products and services, LED lighting in exhibitions and fashion shows come in handy.

9, living room and home theater lighting

The use of LED light color to contrast a warm, harmonious and warm waves of sentiment, reflecting the comfortable, casual atmosphere. Led lighting applications for home interpretation of another sense.

Market outlook

LED interior lighting market outlook in the next decade is a rapid development and rapid expansion period. As the economy continues to develop, citizens' growing awareness of energy conservation, energy efficient LED interior lighting will be favored by consumers. Meanwhile, the state will develop a lot in energy efficiency grant program, aid enterprise technology development, the development of more energy-efficient LED lighting effects better interior lighting.