OSRAM 64291 XIR - Halogen lamp 22.8 V 40 W G6.35 without reflector for fiber optic and medical luminaires
The OSRAM 64291 XIR is a reflectorless, low-voltage halogen lamp designed for special luminaires and fiber optic light sources in medical and industrial environments. It operates at 22.8 V and 40 W , features a G6.35 base, and delivers 1,200 lumens with a color temperature of 3,150 K , providing a warm, crisp, and stable white light. Its h90 burn-in position facilitates integration into compact fixtures and fiber optic heads.
As a member of OSRAM's professional halogen family, this XIR version combines the advantages of XENOPHOT lamps ( xenon filling, instant start-up and high efficiency) with an infrared (IRC) coating on the bulb that improves efficiency compared to standard halogens; a solution widely used in operating rooms, microscopy, dentistry and other precision lighting equipment.
Main features
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Power / voltage: 40 W at 22.8 V.
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Base: G6.35 (bi-pin).
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Nominal luminous flux: 1,200 lm.
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Color temperature: 3,150 K (professional warm white).
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Dimensions: diameter 12 mm; total length 44 mm.
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LCL (Light Center Length): 30 mm (±0.5 mm) for precise optical centering.
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Filament and illuminated field: length 3.90 mm; field 3.9 × 1.4 mm²; diameter 1.4 mm.
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Nominal useful life: 800 hours.
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Burning position: h90.
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Adjustable: Yes (compatible with low voltage halogen equipment).
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Energy efficiency (EEI): label B.
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Individual packaging: 25 × 23 × 70 mm (box).
Product benefits
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More light with less heat load at the focus: the IRC coating returns heat to the filament to increase beam efficiency and stability.
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Consistent color and sharpness: Optimal continuous spectrum halogen light for color reproduction and contrast on fabrics and materials.
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Precise installation: LCL 30 mm and short filament for efficient coupling to light guides and optical systems.
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Reliable operation: instant start-up, continuous regulation and 800 h nominal life under correct use.
Use cases
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Medical fiber optic lighting: light heads and units for surgery, dental and endoscopy.
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Microscopy and laboratory: high brightness spot illuminators.
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Special precision luminaires: projection, inspection and instrumentation equipment.
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Replacement in operating room systems: used in luminaires such as Hanaulux/Maquet Surgical Light 3000 (check equipment compatibility).
Frequently Asked Questions
What does XIR mean? It denotes an infrared coated (IRC) version that increases efficiency compared to standard halogens; it is often combined with the xenon fill of the XENOPHOT series.
Is it dimmable? Yes. It works with transformers/regulators suitable for low-voltage halogen.
What is the working position? h90 , suitable for horizontal mounting according to the manufacturer's pictogram.
How do I ensure compatibility? Check the voltage: 22.8V , base: G6.35 , LCL: 30mm , and the geometry of your equipment's spotlight/diffuser.
Good installation practices
- Install with gloves or a clean cloth to avoid residue on the glass.
- Ensure adequate ventilation of the housing and do not exceed the rated power/voltage.
- Align the filament with respect to the optical center to maximize coupling to the fiber.
Project description
OSRAM 64291 XIR low voltage halogen lamp; without reflector; G6.35 base; 22.8 V ; 40 W; 1,200 lm ; 3,150 K ; LCL 30 mm ±0.5 mm ; filament 3.90 mm; illuminated field 3.9 × 1.4 mm²; diameter 12 mm; length 44 mm; life 800 h ; burn-in position h90 ; dimmable; EEI B ; individual packaging 25 × 23 × 70 mm.
