CRI is an index which measure the pleasantness of the light. A typical CRI for Halogen lamp is about 83.
Generally, the jewelry store, museum, or high-end clothing store will require high CRI.
The higher the CRI, the more true color it can bring out from the object. Back To Top
Lamp life is determined by taking a large batch, for example 1000 lamps and light all of them on continuously,
when the 500th lamp fails, the average life of the lamp is determined. Back To Top
The beam pattern measure in degree or in many cases refer to as spot (10 degree), narrow flood (20 degree),flood (30 degree) ,
wide flood (40 degree) is the angle of projection of the lamp. The wider the angle, the more area a lamp can cover.
However, the wider the area covered, the dimmer the area gets. Back To Top
Color temperature is a measurement of the color of the light. The measurement unit is in Kelvin degree.
Color temperature changes during the day.
For example, at Las Vegas on Shining day during summer at 9AM is around 6500 K, at 12 PM is around 8500 K, and at 5 PM is around 3500 K.
Home and restaurants mostly use 2700K to 3000K to create a warm and relaxing atmosphere.
Retail stores or food-related application often select between 3000K to 4000K.
4000K to 5000K is recommended for the kitchen, office, or task area where need to have nice and bright light.
5000K is often found in supermarket, gallery, or area where need the colors to pop up.
6000K is for the commercial lighting or area where daylight white is needed.
Click to see an enlarge Color Temperature
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