The Osram 64260 Halogen Bulb is sometimes referred to as "HLX 64260" which means that the bulb has Zenophot gas which replaces the krypton gas that is normally in most halogen light bulbs. 
 
Osram  64260 Specifications:
- Mfg. Ordering Code: 54022
- Wattage: 30 Watt
- Voltage: 12 Volt
- Base Type: PG22 / PREFOCUS 2 PIN
- Shape: T3
- Type: HLX Halogen
- Overall Length: 40mm
- LCL: 14mm
- Burning Position: Universal
- Average Life: 50 Hours

Primary Applications: Microscope, Scientific, Medical, and Dental

Other Known Codes: Zeiss 54022, Nikon 79761, FS-2, FS-3,CS-2, NS-1, Marco MR1045, 1045, GII, GIV, GXX IV, 64260, Osram, Slit Lamp, Specialty Optical FU-2852, Ophthalmic Bulbs, Ophthalmic Lamps, OSI 64260, Sylvania 64260, Osram HLX64260