ColorArc PAR36 Metal Halide Reflector

The ColorArc line of metal halide lamps from Iwasaki exhibit the highest colour rendering properties of any commercially-available discharge lamp. With a CRI of 96 throughout the entire range, even at low colour temperatures, the quality of light they deliver is second to none. Optimised control of the chemical corrosion reactions occurring during life also mean that colour is kept within +/- 300K during life, almost as good as from ceramic metal halide products.

ColorArc lamps were introduced in the E27 tubular format and then a PAR38 reflector envelope followed, with dichroic coating to project forward a cool beam of light.  Where an aluminium reflector is acceptable the lamp size has been reduced to the much more compact PAR36 style represented here. By mounting the arc tube horizontally in the shallow reflector, a very tight beam can be produced. The arc tube is surrounded by the usual heavy-walled quartz shroud to give the lamp its open fixture status.

Iwasaki is able to make a lamp as compact as this because it fuses the glass reflector and front lens together at the rim, making a gas-tight seal. The outer bulb is then evacuated and the bare arc tube can then run satisfactorily in the reflector. Western lamps use glued-on front lenses and because the seal is not vacuum tight, the arc tube has to be enclosed in its own outer jacket, which takes up space and requires a much deeper reflector.

In addition to the usual range of colour temperatures, the reflector lamps are offered in 'Mediterranean Blue' and 'Enhanced Fresh Pink' colours for special lighting effects in a wide variety of retail applications.
Manufacturer: Iwasaki Electric Co. Ltd.
Lamp Power: 70 Watts
Lamp Current: 1.0 Amps
Lamp Voltage: 90 Volts
Cap: E27s / 38x45 Ni Plated + vitrite
Bulb Finish: Stippled, Flood Borosilicate
Bulb Type: PAR-114 PAR-36 in eighths/inch
Overall Length: 102 mm
Light Centre Length: N/A
Electrodes: Backwound thoriated
Atmosphere: Inner: Xe | Na,Hg Outer: Vacuum
Luminous Flux & Efficacy: 3,300 lm (at 100 hrs) 47.1 lm/W (at 100 hrs)
Beam Intensity & Angle: 7800 cd 26 degrees
Colour Temperature & CRI: CCT: 6500K CRI: Ra 92
Chromaticity Co-ordinates: CCx: CCy:
Burning Position: Universal
Rated Life: 6,000 hours (to 70% survival)
Warm Up / Re-strike Time 5 minutes 15 minutes max.
Factory: Saitama Japan
Date of Manufacture: July 1999
Original / Present Value:
References: 1) Iwasaki Lamp Catalogue 1999.