arisdn

How do LED sources make white light?

September 20, 2012April 18, 2016arisdn

A White LED consists of a Blue chip and a yellow phosphor. The blue photons generated in the chip can either:

1.travel through the phosphor layer

2.In the phosphor layers it can be converted into a yellow photon.

Those two colors combined will generate white light. With a thicker phosphor layer more photons will be converted to white light, thus changing the color point of the LED. Also the wavelength of the blue photons influences the color of the emitted light. Therefore controlling the phosphor layer from LED to LED and over the chip minimizes the color variation.

What is a LED?

September 8, 2012April 18, 2016arisdn

LED is stand for Light Emitting Diode. It means semiconductor (diode) that can produce visible light. Sometimes LED called as Solid State Lighting, because it made from solid form or material. On conventional lighting, light produce by gas that ignited by filament on closed tube or glass. That’s why conventional lighting must be taken care carefully on packaging, delivery and installation because it’s fragile.

A semiconductor device that converts electrical energy directly into discrete color of light
Made from different materials and substrates
Made in chip fabrication factories
No brass, glass and gas (“solid state”)
White LED Sources are a blue LED device + phosphor

What is Light?

September 8, 2012April 18, 2016arisdn

Light is part of the electromagnetic spectrum, which ranges from radio waves to gamma rays. Electromagnetic radiation waves, as their names suggest are fluctuations of electric and magnetic fields, which can transport energy from one location to another. Visible light is not inherently different from the other parts of the electromagnetic spectrum with the exception that the human eye can detect visible waves.

To learn more about lighting, you can Google many articles or many website that explain about these matters on internet. And in this blog, I will provide some basic information about basic lighting. I will not fulfill with theoretical or too technical things that make you more confuse. So, wait for other post by Lighttalks 🙂

Cahaya adalah radiasi electromagnetic (seperti gelombang radio danTV ) yang berjalan disekitar kita. Cahaya akan menciptakan proses visual saat masuk ke dalam mata, dimana proses-proses tersebut terjadi tanpa pernah kita sadari. Dengan cahaya, kita bisa membedakan bentuk, warna, kedalaman. Cahaya adalah sebuah gejala alam yg dapat dirasakan & tergantung pada kesensitifan mata. Banyak artikel maupun website yang telah dibuat yang menjelaskan mengenai basic lighting, sehingga Anda dapat dengan mudah untuk mencari dan mempelajarinya dari internet. Khusus untuk blog ini, kita akan mendiskusikan hal-hal ringan yang mudah dimengerti mengenai cahaya, sehingga diharapkan kening anda tidak berkerut saat membacanya 🙂

Language and Images

September 2, 2012April 18, 2016arisdn

Sometimes to make people understand more we need to talk using their own native language. Since from the beginning this blog will focus on share on anything related to design in our everyday live, I think it will be better if I make 2 version of language in every post. One version will use English and another is Bahasa Indonesia. It will consume time to make it, but as long as people understand about the content, I think it worth to do. But not every post or content will be available on bi-lingual, because some post or terms will more interesting to read on one language rather than two language.

Also it will utilize pictures or images for the contents, since design are, more or less, related to visual. Some says pictures will say more than thousand words. Pictures can be taken from everyday event, product information or taken from website. As long as this pictures represent the topic, we will use and discuss it.

what is Lighttalks

September 1, 2012April 18, 2016arisdn

Welcome to Lighttalks.

This new word actually combination of Light and Talks. From Wikipedia, these two words has meaning :

Light : Visible light (commonly referred to simply as light) is electromagnetic radiation that is visible to the human eye, and is responsible for the sense of sight.

But in another term, Light also means:

light (comparative lighter, superlative lightest)

Of low weight; not heavy.
Lightly-built; designed for speed or small loads.
Gentle; having little force or momentum.
Unimportant, trivial, having little value or significance.

Talks : Talk may refer to:

Conversation, interactive communication between two or more people
Speech, the production of a spoken language
Interaction, face to face conversations

So, in this blog we will “talking about light”. It can be discussion about Lighting or some Light Things in our life. This blog will focus to discuss about design. It can be Product/Industrial, Lighting, Multimedia, Architectural, Interior, Graphic or Art.

Please feel free to comment or give me idea to discuss.

Warm regards, Lighttalks