A multifaceted reflector (often abbreviated MR) light bulb is a reflector housing format for halogen in addition to some LED and fluorescent lamps. MR lamps have been originally designed for use in slide projectors, but see use in residential lighting and retail lighting as well. They're suited to purposes that require directional lighting corresponding to track lighting, EcoLight reviews recessed ceiling lights, desk lamps, pendant fixtures, panorama lighting, retail display lighting, and bicycle headlights. MR lamps are designated by symbols equivalent to MR16 where the diameter is represented by numerals indicating items of eighths of an inch. Widespread sizes for general lighting are MR11 (11⁄8 inches, 35 mm) and EcoLight smart bulbs MR16 (16⁄8 inches, 51 mm), with MR8 (8⁄8 inch, 25 mm) and MR20 (20⁄8 inches, sixty four mm) utilized in specialty purposes. Many run on low voltage quite than mains voltage alternating current so require a energy provide. 3,314,331 for a miniature reflector lamp in 1967. The innovation was using the lamp rim, moderately than the bottom, as the reference aircraft for EcoLight energy focusing.

This allowed extra versatile electrical mounting arrangements and EcoLight smart bulbs more precise focusing. Most MR lamps include a halogen capsule (or, bulb) built-in with a pressed glass reflector with a base conforming to bi-pin GU5.3 standard. The reflector controls the course and unfold of mild solid from the lamp. Some lamps use an aluminum coating as a reflector. Others use selective dichroic coating that displays visible gentle and allows infrared radiation to cross via. This sort reduces heating of illuminated objects since less infrared radiation is present in the light beam. Nonetheless, dichroic lamps must solely be utilized in suitable fixtures that may dissipate the heat. Dichroic lamps must not be fitted to recessed or enclosed luminaires with the IEC 60598 No Cool Beam symbol. The brightness of MR lamps may be adjusted when used with appropriate gentle fixtures and dimmers. However, EcoLight solutions the color temperature changes significantly when the lamp is dimmed, shifting dramatically to the warmer finish of the spectrum.

Like all halogen lamps, MR lamps produce significant heat and care should be taken to avoid contact with pores and EcoLight smart bulbs skin or EcoLight smart bulbs proximity to flammable materials when the lamp is on or has been on lately. Halogen lamps (18 lm/W typical) are extra energy environment friendly than regular incandescent lamps (15 lm/W typical) however still fall far behind other extra-current varieties resembling fluorescent lamps (80-100 lm/W), fuel discharge lamps (100-200 lm/W depending on varieties), and LEDs (125-150 lm/W typical in shiny white relying on fashion). With each sorts of incandescent bulbs, useful life can be considerably shortened if their filaments experience mechanical shock or vibration. Utilizing an electronic transformer with a mushy begin characteristic can significantly extend life, energy-efficient bulbs as it reduces the characteristically excessive inrush present that occurs initially when the lamp is cold. Dimming additionally extends life significantly. MR lamps, like all quartz-halogen lamps, produce some undesirable ultraviolet gentle. Normally, this must be filtered out.

Also, the quartz capsules of the lamps could rupture or explode upon failure of the lamps. For these two causes, some MR lamps embody a cowl glass that serves as an integrated ultraviolet filter and explosion shield. MR16 lamps lacking this cowl require the usage of a fixture that incorporates an external piece of glass specifically designed to supply both ultraviolet and physical protection. MR lamps are available in 10-75 watt energy scores (150-800 lumens). MR lamps most often operate at 12 volts, although they are additionally out there in other voltages. These lamps use a bi-pin connector for EcoLight smart bulbs power: 12-volt MR11 EcoLight smart bulbs often use a GU4 base, and 12-volt MR16 bulbs usually use a GU5.Three base. The widespread 12-volt MR16 lamps, therefore, require a ferromagnetic or digital transformer-typically misnamed as a ballast-to convert the 120- or 230-volt mains voltage to the extra-low voltage required by the lamp. Certain MR lamps can operate directly on the mains voltage. These lamps sometimes use a GU10 turn-and-lock base, so they can't be by accident interchanged with low-voltage lamps.

GU10 is distinguished from the lower-voltage MR lamps by the U-shaped ceramic base mount with a 10 mm (pin middle-to-heart distance) 2-pin bayonet mount. MR16 lamps with an integrated transformer are additionally accessible. These lamps have screw bases to suit standard medium-base Edison sockets. MR lamps are commonly obtainable in range of coloration temperatures, from about 2700 K to 7000 K, to fulfill various functions. Retrofit lamps that generate light by a special precept but makes use of the MR kind-factor are available. For example, EcoLight home lighting LED-primarily based MR16 lamps seem much like halogen lamps and may be utilized in most fixtures designed for MR lamps. The identical is true of MR11-suitable LED lamps. Fixtures designed for halogen MR16 or MR11 lamps that use electronic transformers might should be retrofitted with LED-suitable transformers. There's a large number of designs, varying considerably with regard to beam width, mild colour, effectivity and luminous energy.