HMI (Hydrargyrum Medium-Arc Iodide) adalah jenis lighting yang
tidak memakai lampu pijar sebagai penghasil cahayanya.
Lampu HMI berkualitas tinggi dan sangat mahal. HMI biasa dipakai dalam industri film dan perusahaan pertelevisian. Keuntungan dari lampu HMI adalah :
HMI (Medium-Arc Iodide Hydrargyrum) is a type of lighting that does not use incandescent lamps as a light producer. HMI lamp high quality and very expensive. HMI is usually used in the film industry and television company. The advantage of HMI lamps are:
- Efisiensi 2-5 kali . Semakin kecil daya yang dipakai, panas yang dihasilkan tidak terlalu panas
- Colour Tempereture HMI dijalankan pada sekitar 5600 K, setara dengan suhu siang hari. Hal ini membuat shooting siang hari lebih mudah, serta hilangnya menghilangkan cahaya dari bayangan.
- Kualitas cahaya sangat baik.
- Efficiency 2-5 times. The less power is used, the heat generated is not too hot
- Colour HMI tempereture run at about 5600 K, the equivalent temperatures during the day. This makes shooting easier during the day, as well as eliminating the loss of light from the shadows.
- The quality of light is very good.
Sebuah lampu HMI menggunakan uap merkuri dicampur dengan logam halida dalam quartz-glass envelope, dengan dua elektroda tungsten pemisahan busur menengah.
An HMI lamps use mercury vapor mixed with metal halide in a quartz-glass envelope, with two tungsten electrode arc separation medium.
Tidak seperti lighting lain yang menggunakan lampu pijar, HMI membutuhkan ballast, yang dipisahkan dari kepala melalui kabel header, untuk membatasi arus dan pasokan tegangan yang tepat. Lampu beroperasi dengan menciptakan busur listrik diantara dua elektroda dalam bohlam, sehingga output cahaya yang dihasilkan sangat tinggi dengan keberhasilan yang lebih besar daripada unit lampu pijar.
Unlike other lighting using incandescent lamps, HMI require ballasts, which are separated from the head through the cable header, to limit the current and supply the proper voltage. Lamp operates by creating an electric arc between two electrodes in the bulb, so the light output produced is very high with greater efficacy than incandescent units.
Unlike other lighting using incandescent lamps, HMI require ballasts, which are separated from the head through the cable header, to limit the current and supply the proper voltage. Lamp operates by creating an electric arc between two electrodes in the bulb, so the light output produced is very high with greater efficacy than incandescent units.
0 comments :
Post a Comment