OSRAM 64668 XIR - XIR 80W, 22.8V, 3250K bipin halogen lamp for fiber optics and medical luminaires

OSRAM 64668 XIR - XIR 80W, 22.8V, 3250K bipin halogen lamp for fiber optics and medical luminaires

The Osram 64668 XIR is a low-voltage halogen lamp with a G6.35 base , optimized for medical fiber optic equipment, surgical lighting, microscopy, and laboratory applications. It combines HLX technology (xenon gas filling for higher luminous flux compared to standard halogens) with an infrared (XIR) coating that reflects heat back to the filament, increasing luminous efficacy. It delivers 3050 lm with a color temperature of 3250 K and a CRI of 100 , ensuring crisp light and accurate color rendering. Its compact dimensions ( Ø 14 mm , length 44 mm ) and 30 mm LCL facilitate precise mounting in light guides and optics. The operating position is h90 , and the reference rated life is 350 h (according to the current OSRAM datasheet). Designed for use in suitable luminaires with protection against heat and potential breakage.

Main features

• Technology: Low voltage halogen with xenon gas (HLX) and high efficiency XIR coating.
• Power / Voltage / Current: 80 W · 22.8 V · 3.5 A.
• Luminous flux: 3050 lm · Color temperature: 3250 K · CRI: 100.
• Base: G6.35 (bi-pin).
• LCL (Light Center Length): 30.0 mm.
• Dimensions: diameter 14.0 mm · length 44.0 mm · weight approx. 2 g.
• Illuminated field (filament area): 2.2 × 5.5 mm².
• Working position: h90 (horizontal orientation according to technical data sheet).
• Adjustable: Yes, dimmable .
• Nominal life: 350 h (OSRAM reference).
• Packaging units: 1 unit (individual box) · 40 units (shipping box).
• Applications: medical optical fiber, surgical/dental lamps, microscopy, UV curing and laboratory analysis.
• Safety: operate only in suitable luminaires with screens/protections; indicate high temperature; avoid UV emission and projection of fragments.

Product benefits

• Superior efficiency thanks to the XIR coating, which recovers heat towards the filament and improves performance compared to conventional halogens.
• More flow at the same power due to the HLX (xenon) load, maintaining constant light and instant start-up.
• Perfect color and detail : CRI 100 for critical color reproduction in healthcare and imaging environments.
• Precise optical coupling thanks to the 30 mm LCL and the filament geometry (2.2 × 5.5 mm²), ideal for light guides.
• Standard G6.35 format and reduced size for easy integration or replacement in compatible equipment.

Use cases

• Fiber optic illuminators for endoscopy, microscopy and procedure vision.
• Surgical and dental luminaires with 80W / 22.8V bipin lamp.
• Microscopy and analysis in laboratories and R&D departments.
• UV curing processes and precision tasks in optical instrumentation.

Frequently Asked Questions

• Is it interchangeable with a standard 80W halogen bulb? Always use the model and voltage specified by the equipment manufacturer. The 64668 XIR is optimized for 22.8V; voltage deviations affect light output and lifespan.
• Is it adjustable? Yes, it's dimmable . Adjust the control according to the equipment's recommendations to avoid excessive reductions in life or output.
• What does XIR/HLX mean? HLX indicates xenon fill gas with higher flow compared to standard halogens; XIR adds infrared coating that further increases efficiency.
• How to handle it? Do not touch the quartz bulb with your fingers; handle with clean gloves or a lint-free cloth and let it cool before any intervention.
• Useful life? Current OSRAM reference: 350 h . Some older listings indicate 400 h (see technical note).

Installation and safety recommendations

• Install in suitable light fixtures with screens/protections to prevent UV emission and projection of fragments in case of breakage.
• Check the equipment voltage/current (22.8 V · 3.5 A nominal) and the h90 position indicated by the manufacturer.
• Keep the optical components and light guide docking port clean to maintain performance.
• Manage end-of-life in accordance with local regulations on halogen lamps.

Technical note on values

The current OSRAM data sheet specifies a nominal life of 350 hours . Some commercial publications cite 400 hours ; this difference is due to revisions in the data sheet and testing methodologies. This page prioritizes the manufacturer's current data.

Project description

XIR bipin halogen lamp for fiber optics and medical use: power 80 W; voltage 22.8 V; current 3.5 A; flux 3050 lm; 3250 K; CRI 100; base G6.35; LCL 30.0 mm; illuminated field 2.2 × 5.5 mm²; diameter 14.0 mm; length 44.0 mm; working position h90; dimmable; nominal life 350 h; packaging: 1 pc (box) / 40 pcs (shipping box).