Sylvania Professional Metal Reflector AR70
From the outset of its ventures into low voltage halogen lighting, Sylvania embraced the two competing technologies of MR16 dichroic lamps favoured in America, Britain and Japan, as well as the trend of metal reflectors preferred by the European manufacturers. Sylvania's first metal reflector lamps formed the 'Hi-Light HRS' family, created by the company's original European halogen base at Erlangen. Like many early Sylvania European halogen lamps, their design is similar to the equivalent German Osram types. However, whereas Osram upgraded its metal reflector lamps to feature an anti-glare shield, Sylvania never adopted that design and its versions were notably inferior in performance.

In the mid 1980s Sylvania relocated its European halogen operations to Tienen in Belgium, and in the following years many powerful innovations emerged from that site. One of the most popular was the 'Tru-Aim Professional' of 1987 - the first MR16 lamps in the world to feature a closed front glass. The lenses are also optically textured to deliver outstanding beam uniformity, free free from dark holes or facet images often present in open lamps. The cost of this feature was entirely offset by the major parallel achievement of switching from quartz to hardglass halogen capsules.

In 1989 Sylvania upgraded its old metal reflector lamps to the 'Professional Metal' design illustrated here, making use of the same lenses and hardglass technology. They were offered in both 48mm and 70mm diameters, and for the first time allowed Sylvania to compete with the lower-glare Osram versions. However by this time the metal reflector concept was already losing ground to the preferred dichroic reflector lamps, and they were discontinued around 1995.
Manufacturer: GTE Sylvania
Lamp Power: 20 Watts  
Lamp Voltage: 12 Volts  
Lamp Current: 1.67 Amperes  
Cap Type: BA15d Ni plated + Vitrite insulator
Bulb Type: ARC-70 ARC-22 in eighths/inch
Bulb Finish: Lenticuled Glass Aluminium reflector
Filament Type: C-8 Axial Single Coil
Atmosphere: Bromine, Krypton
Luminous Flux: N/A  
Luminous Efficacy: N/A  
Luminous Intensity: 600 cd  
Beam Distribution: 30° to 50% peak
Colour Temperature & CRI: CCT: 2925K CRI: Ra 100
Chromaticity Co-ordinates: CCx: 0.442 CCy: 0.406
Lifetime: 2000 hours to 50% survival
Burning Position: Universal  
Overall Length: 53.5 mm 2 1/8"
Light Centre Length: N/A  
Factory: Tienen Belgium
Date of Manufacture: 1989 August Date Code: 44
Original Value: GB £8.20 (1988)  
References: 1) GTE Sylvania Catalogue 1991 UK, pp. 72-74
2) GTE Sylvania Brochure - Professional Metal Reflectors - 1990 Switzerland
3) GTE Sylvania Brochure - Professional Metal Reflectors - 1991 UK
4) GTE Sylvania Price List, 1989 April UK, p.45