17 Jan 2012

Basic Lighting Knowledge

 
1.    
 Lumen(Lm)
Lumen is the international(SL)unit of luminous flux, a measure of overall light emitted by a light
source.
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2.     Candela(cd)
Candela is the international(sl) unit of luminuous intensity,a measure of light emitted by a light
souce in a particular direction. Any given light source will have different luminous intensities in different direction considered.

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3.     Beam Angle [Unit:degree]
Beam angle is the angle betweent two directions for which the luminous intensity is 50% of the
maximum intensity as measured in a plan through the nominal beam centerline.Beam angle of a
lamp give an idea of how the light beam spread away form the beam center.
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4.     LUX(lx)
Lux is the international(SL)unit of illuminance, a measure of light arriving at a surface, 1 lumen per
square foot equals 1 footcandle, while 1 lumen per square meter equals 1 lux .
[lux = lumen/m2]
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5.     Color Temperature / Correlated Color
Temperature(CCT)
A black-Body radiator will have different color whent it is heated up to different temperature(in
kevin).The Temperature at which the heated black-body radiator matches the color of the light
source is the color temperature of the light source.


6.     Color Rendering Index(CR)
Color rendering index ranges from 0-100 ,measures a light source's ability to reproduce the color of
varies objects being lit by reference light source, black body radiator(CRI=100)

7.     Efficacy(lm/W)
Eifficacy is the effcience of a light source to concert electricity power to light which is expressed in
lumen output per unit power input (watt)
[Efficacy = lumen / wattage]

8.     Design Life Time
Design life time is the average life of lighting product when it is operated at nominal lamp
voltage,current and controlled working environment.Actual lamp life will varies because of any
different from those rating condition.

9.     Dimmability
Not all lighting prodcuts is designed for dimming function.Dimming a non-dimmable LED lighting
product will cause un-predictable result and may affect the life thime of the products.The below
figure ahows the typical input current variation while adjusting the DC voltage input to dimmable
andnon-dimmable product.

LED APPLICATION

 

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1.     Office Lighting
Lighting is a key factor in the office environment, where it contributes to each employee's ability to work effectively and more efficiently by promoting emotional well-being, safety and alertness. A well-planned lighting strategy will help your people work to the best of their abilities, providing the right level of comfort and ambiance so that they are less fatigued nd more focused on the tasks at hand. 

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2.    
LED lighting solutions are flexible enough to accomplish these goals in a range of office types, from open or closed rooms and meeting halls to lobbies and utilities. In addition to helping your bottom line, our solutions also ensure your office is environmentally safe and a healthier place to work in. 

o    The lack of IR and UV rays means the light LEDs generate is healthier and less harsh, putting employees at ease letting them work better and healthier;

o    The pure white light better brings out the details of the office decor, subtly improving aesthetics that your clients will notice;

o    The low operating temperature and long life helps reduce air conditioning and maintenance costs, helping businesses save money.

o    Made with non-toxic materials, LED lighting brings your office into the green era of sustainable business, heightening your brand image.

Suitable for reception and lobby areas, conference rooms, the general workplace
and corridors.

3.     Store & Cafe Lighting
Every shop must create and maintain a distinct identity that allows it to stand out, to be unique in some way. Lighting is one element used in creating that identity, allowing shop owners to show off merchandise in dramatic or straightforward ways, whatever you need to attract customers, persuade them to take a closer look, and provide visual comfort while they browse.

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4.    
With the right lighting strategy, you can guide and direct visitors' attention to hot new items, let them appreciate the quality, and serve as an example of the best way to arrange or display the items in their own home. To this end, LED lighting is the most effective means of catching shoppers' attention and persuading them to buy, while also elevating your brand image.

o    Provides a wide range of color options and lighting styles that produce no heat, IR or UV light, which is important for preventing damage to fresh goods and fruit, or to historic art work that requires carefully controlled environments.

o    High color rendering index - good color reproduction

o    Highly efficient and long-lasting, helps cut down significantly on maintenance
and electricity costs, improving the shop's bottom line.

o    As a mercury-free solution, shop owners will also be helping the environment
by choosing LEDs.

o    Highly efficient and long-lasting, helps cut down significantly on maintenance
and electricity costs, improving the shop's bottom line.

Perfect for window, general merchandise, and new product displays, as well as
product showrooms.

5.     Industrial Lighting
A comfortable work environment is critical to optimizing worker productivity, improving both the quality and quantity of output. Lighting plays an important role in creating such an environment, as good light makes the workplace safer and less tiring, meaning fewer accidents, lower fault and reject levels and better overall productivity. A well-lit workplace also means happier employees who appreciate the space in which they work. 

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6.    
What defines high quality lighting? It means having enough light to see one's work area clearly; it means no glare; it means the best uniformity of color, and illuminating with the right color; and nowadays it also means lighting that is efficient, long-lasting and good for the environment, which is what makes LED lighting an ideal choice:

o    High quality, no IR and UV rays, low heat and glare-free light creates greater comfort and allows workers to see what they're doing more clearly and with less eye strain. It's also healthier for humans; Without toxic substances such as mercury, there is no risk to people or the environment;

o    Long life spans and lower energy requirements help industrial facilities cut down on electricity costs, further improving the bottom line.
Warehouses, general factories, electronics assembly plants and most general industry buildings can benefit greatly by upgrading to LEDs.

7.     Interior Design Lighting
An elegant interior is a waste of space if not properly illuminated, which is why choosing the right source of light is critical to creating the right atmosphere for your space, whether it's an office, art exhibition, spa or social club. With growing concerns about the environment and how we use our energy, it is also becoming an important part of any company's image to use the most efficient and environmentally friendly lighting, which is LED lighting.

8.    
And not only are our lighting
solutions green and efficient, they're the most beautiful as well. LED lighting solutions enhance high-end interior locations by establishing a precise mood and atmosphere using a subtle combination of lighting types and colors to let
interior spaces realize their full potential.

o    Heat-free operation and long life spans minimize energy and maintenance costs, while crisp, cool or soft, warm light create a sophisticated, elegant, highly customized look;

o    LED lighting contains no mercury, making them environmentally friendly and safer to use;

o    Pure white light without IR or UV rays creates a more comfortable environment, and is healthier too.


High-end bars, boutique stores, five-star restaurants and top-level executive office
spaces can benefit greatly from LED lighting.

9.     Residential lighting
Lighting in residential areas serves many purposes, from cultivating an inviting and friendly atmosphere to creating a safe, secure environment where residents can feel comfortable to move around freely. Nowadays creating a sustainable, eco-friendly living environment is also of great importance, making the lighting choice all the more significant.

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10.    

o    With LED lighting, residential areas can add reliable lighting that casts an excellent color on the surroundings; whether in crisp cool tones or soft, warm ones, is your choice. Furthermore the lack of IR and UV rays increases comfort, enhances clarity and is healthier for residents;

o    Because LEDs contain no toxic substances such as mercury, they're a sustainable solution and a great way for residential complexes to go green.

o    The high energy efficiency and long life span also help reduce costs, adding to their sustainability while helping home and property owners save money on operating costs.


Apartment complexes, condominiums, private homes and any other kind of residential area will look better and be a safer place to live with LED lighting.

11.   Hospitality Lighting
For hotels and other establishments that take customer service very seriously, lighting plays an important role in creating a visually comforting and appealing environment. External decorative lighting is crucial to drawing attention, while indoor
lighting must be finely tuned to create a safe, pleasant, and luxurious atmosphere.

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12.    

o    LED lighting solutions are well-suited for all these roles because they offer superb color accuracy and customization and do not emit IR or UV light, which eliminates harshness, increases guest comfort, and is healthier as well;

o    Extraordinary energy efficiency, long life spans and heat-free operation severely cut down on hotel maintenance and energy costs;

o    Brings hotels into a new era of sustainability, creating greener and human friendly environments by eliminating the presence of mercury from all lighting applications.

Hotel lobbies and guest rooms, bars, restaurants and corridors are all perfect areas
for LED lighting solutions.

13.   Advertising Solutions
LED lighting is the best, most efficient and environmentally friendly way to backlight light box signage, whether to accurately display corporate logos or general advertising.

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14.    

o    As the most energy efficient option, signage users will pay lower energy costs than on light boxes employing fluorescent tube backlighting, and the longer life spans means less downtime and maintenance, increasing ROI.

o    LED lighting is also environmentally safe, containing no mercury or other toxic
substances that can be found in fluorescent lighting.

o    And because no IR or UV light is produced, your advertising content will
actually look more naturally lit, achieving better light distribution that appears
more pleasing to the eye.

o    Suitable for logo and advertising light boxes.

  • Other Lighting Applications
    LED lighting can breathe new life a range of public areas and corridors - Government facilities can quickly be modernized, presenting a fresh and more welcoming face to the public, while school classrooms become more comfortable learning environments, letting students focus better, see more clearly, and study harder.
    Hospitals can even take on a calmer atmosphere, letting patients and doctors feel more at ease.

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  •  
    • High efficiency and long life spans cut down on energy usage and maintenance costs, making public facilities less expensive to operate, which tax payers will appreciate;
    • No IR and UV light produced, so public officials and other workers will stay healthier, feel more comfortable, and are more productive;
    • Mercury-free LED lighting makes government buildings more environmentally friendly and modernizes a city or town's image.

From hospitals to schools, exhibition halls to city halls and libraries, LED lighting is the
best way to bring any public facility into the 21st century.

 

FAQ Lampu LED

Banyak sekali pertanyaan dasar yang diajukan kepada kami mengenai LED, kami harap dengan adanya artikel ini akan dapat membuat banyak orang semakin paham akan lampu LED.

Q : Berapa ekuivalen lampu LED bila dibandingkan dengan lampu lainnya?
A : Lampu LED 2x lebih hemat dari LHE, 10W LED setara dengan 20W LHE
Lampu LED 10x lbh hemat dari halogen. 3 Watt LED setara dengan 30 Watt Halogen.

Q : Warna apa saja yang tersedia?
A : LED memiliki beraneka macam warna, merah, biru, warm white, white, hijau, ungu, pink, semua warna tersedia. Inilah salah satu keunggulan LED dibandingkan dengan teknologi pencahayaan lainnya..

Q : Warna apa yang sebaiknya saya gunakan?
A : Tergantung anda akan menggunakannya untuk apa?
Untuk menimbulkan suasana nyaman, romantis, hangat (kamar tamu, kamar tidur) gunakan warna warm white (2700 - 3000K)
Untuk menonjolkan warna (showroom, kamar pas, restaurant, lobby hotel, taman) gunakan warna warm white (2700 - 3000K)
Untuk membaca atau melakukan pekerjaan yang membutuhkan detail tinggi (kantor, rumah sakit, sekolah) gunakan warna white (5000 - 6700K)

Q : Apa arti K di belakang 5000 - 6700 K?
A : K adalah kelvin satuan temperature colour. Warnanya sesuai dengan warna api, Berikut ini adalah grafiknya.

LED pun bisa gagal

 

It is called Spiralight, designed by Robin Carpenter
Sebagai bola lampu yang memiliki banyak sekali kelebihan, tak heran kalau LED jadi primadona. Semua orang membicarakan kelebihan-kelebihannya. Tapi sama halnya dengan produk apapun, selain punya kelebihan, LED pun punya kekurangan, yang mungkin jarang diceritakan.
Kali ini kita akan coba melihat, apa saja, sih, kekurangan LED?
1. Untuk urusan color rendering ternyata halogen masih jadi juara. Acuan color rendering terbaik tentu adalah sinar matahari, dengan indeks 100 Ra, indeks yang sama juga dimiliki lampu halogen. Sedangkan indeks color rendering LED rata-rata masih di bawah 80 Ra. Artinya, cahaya dari lampu LED belum bisa memantulkan warna sesuai warna asli benda yang disinarinya.
Wajar jika para lighting designer, arsitek, dan desainer interior, belum mau meninggalkan halogen, meskipun halogen relatif boros dan usia pakainya pendek.
2. Poin kelemahan LED berikutnya adalah spektrum warna. Untuk poin ini lagi-lagi pemenangnya adalah halogen. Spektrum warna pada LED masih terputus-putus (discrete), akibatnya cahaya yang dihasilkan tidak natural. Padahal mata manusia sudah terbiasa dengan spektrum warna dari cahaya matahari yang continous, seperti juga spektrum warna pada halogen.
3.Usia pakai LED memang disebut-sebut paling panjang, bahkan sebuah penelitian di Cambridge University, pada tahun 2009, mengklaim mampu membuat LED dengan usia pakai mencapai 100.000 jam. Pada kenyataannya usia pakai LED tidak pernah sesuai dengan klaim-klaim yang beredar. Bertahan hingga 50% saja sudah tergolong bagus. Apa pasal?
Ada dua hal yang berpotensi membuat usia pakai LED memendek. Pertama adalah LED rentan terhadap temperatur. LED terbentuk dari berbagai electronic chips. Sama seperti chip pada komputer yang memiliki batas toleransi terhadap panas lingkungannya, komponen elektronik LED pun akan menurun kualitasnya jika terus menerus terpapar panas.
Penyebab kedua adalah fluktuasi daya listrik. Hal ini berkaitan juga dengan komponen elektronik yang ada pada LED, khususnya driver. Seperti halnya fluorescent dan halogen, yang juga membutuhkan komponen elektronik, seperti driver atau ballast, fluktuasi arus listrik berpotensi merusak komponen elektronik pada LED, yang berakibat pada memendeknya usia pakai.
4. Kekurangan LED berikutnya adalah dalam hal inkonsistensi warna. Sebenarnya pada jenis lampu lain pun inkonsistensi warna kerap terjadi, tapi pada LED persentasenya masih lebih tinggi. Inkonsistensi ini terjadi antara lain karena perbedaan jenis reflektor yang digunakan, perbedaan komposisi fill in gas, atau berbagai permasalahan lain yang terjadi pada tahap produksi. Beruntung sekarang sudah ada produsen yang menyatakan bahwa produk LED mereka sudah memiliki konsistensi yang baik, namun jumlahnya masih sedikit jika dibandingkan dengan yang belum.
Dengan mengetahui kelebihan dan kekurangan sebuah produk, dalam hal ini LED, tentunya akan mempermudah kita untuk menggunakannya sesuai dengan kualitasnya. Dengan demikian kualitas cahaya yang dihasilkan pun lebih memuaskan

12 Jan 2012

LAMPU LED | LIGHTING DESIGNER JAKARTA

Siapkah Kita menyambut LED?

Siapkah Kita Beralih ke LED?

Sederet kelebihannya rupanya tidak lantas membuat LED diminati, Padahal produk lampu berdesain cantik yang menggunakan bola lampu LED sudah banyak di pasaran. Edukasi mengenai betapa canggih dan hemat energinya teknologi LED sudah gencar dilakukan oleh beragam vendor, seperti Philips, Osram. Kenapa? Ternyata Harga masih menjadi masalah utama


Untuk sebagian besar masyarakat, dimana bagi mereka biaya masih menjadi salah satu pertimbangan utama dalam membeli sebuah barang, harga lampu LED yang masih tergolong tinggi tentu menjadi penghalang.

Teknologi LED memang sudah seharusnya mulai dikenal baik oleh masyarakat umum, bukan hanya oleh lighting designer, arsitek, atau desainer interior. Sudah waktunya pula, LED tidak hanya menghiasi gedung-gedung tinggi, hotel, atau bangunan publik lainnya. Terlebih jika dikaitkan dengan usaha menghemat konsumsi listrik dan desakan untuk mulai menggunakan teknologi hijau.

Daripada terus menerus menjejali masyarakat dengan kecanggihan, manfaat, dan hal-hal positif LED, kemudian meminta mereka membeli, seperti yang banyak dilakukan oleh produsen-produsen lampu, ada baiknya pertimbangkan kesiapan masyarakat, terutama dalam hal ekonomi. Bukan lantas berhenti mengedukasi, kita bisa memberikan trik sederhana, bagi mereka yang berminat beralih ke LED, tanpa harus menguras kantong.


Jika budget tidak memungkinkan untuk mengganti seluruh bola lampu dengan LED, ganti beberapa saja. Pilih area atau ruang yang membutuhkan penerangan lampu dalam waktu lama, misalnya area yang tidak banyak terkena sinar matahari, padahal banyak aktivitas terjadi di sana. misalnya area ruang tamu atau teras.


Dengan demikian masyarakat tidak akan buru-buru mengecap LED sebagai lampu untuk orang kaya, karena harganya yang relatif mahal. Mengganti satu atau dua bola lampu dengan LED, bisa dilakukan siapa saja, tidak cuma mereka yang berkantong tebal. Semakin banyak yang merasakan manfaat LED, semakin mudah teknologi baru ini diterima masyarakat. Semakin mudah mereka menerima, maka LED akan semakin massal produksinya, Semakin massal. maka akan menjadi semakin murah..

Untuk kedepannya, dapat dipastikan lampu LED akan menggantikan LHE. sama seperti LHE menggantikan lampu pijar. padahal harga LHE bisa sampai 10x kali lipat lebih tinggi daripada lampu pijar

Why LED

Teknologi mengubah kehidupan kita dengan kecepatan yang tak pernah kita bayangkan, dan juga cara kita melihat dunia. Lebih dari seratus tahun yang lalu filamen pijar memeberi pencahayaan untuk malam, meningkatkan produktivitas manusia pada tingkat yang eksponensial. Kemudian, lampu Hemat Energi (Neon) bangkit sebagai alternatif hemat daya.


Multi Daya Utama memasarkan LED sejak lama sebelum menjadi trend dan terus bekerja keras untuk mengubah persepsi teknologi LED. LED tidak lagi hanya produk yang digunakan oleh sebagian kecil orang, dan kami memiliki keahlian teknis, knowhow, dan orang-orang yang dibutuhkan untuk menciptakan solusi pencahayaan umum terbaik fungsional LED.

Ada sejumlah alasan penting mengapa pencahayaan LED lebih baik daripada teknologi pencahayaan lainnya:

* Masa hidup lebih lama: lampu LED terakhir 35.000 jam - 30 kali lebih lama daripada lampu pijar, 25 kali lebih lama dari halogen dan 10 kali lebih lama dari lampu neon. Tidak hanya akan menyelamatkan lingkungan, Anda akan menghemat uang juga.

* Efisiensi Tinggi: Hemat hingga 70% pada penggunaan energi dibandingkan dengan halogen standar dichroic low wattage dan lampu pijar, menurunkan tagihan listrik. 5W LED menghasilkan cahaya sebanyak satu CFL 9W, 35W halogen, dan 80% hemat energi - Sebuah LED menghasilkan cahaya 15W sebanyak 2x13W CFL downlight dan lampu pijar 75W. Penggunaan energi membuat penghematan biaya yang signifikan, terutama dalam aplikasi komersial yang menggunakan lampu dalam jumlah besar.

*Pencahayaan teknologi hijau: penggunaan energi yang lebih rendah membuat lampu LED yang lebih baik bagi lingkungan, Karena panas yang dihasilkan tidak ada, sehingga dapat mengurangi suhu dalam ruang hingga 1-2 derajat, menurunkan biaya AC dan emisi CO2. Pencahayaan LED juga lebih aman bagi lingkungan karena bebas merkuri dan tidak menghasilkan sinar IR atau UV, yang dapat berbahaya bagi manusia. Dengan kata lain, lampu LED adalah sumber pencahayaan terhijau dan paling ramah lingkungan.


 * Warna Superior, meningkatkan kenyamanan: cahaya yang jelas dan nilai tinggi pada Color Rendering Index (CRI), yang menunjukkan reproduksi warna yang akurat, Lampu LED menghasilkan cahaya yang lebih menyenangkan dan santai, meningkatkan kenyamanan dan suasana hati