OSRAM 64638 HLX (XENOPHOT) – Bi-pin halogen lamp 24 V 100 W without reflector, G6.35 base (300 h)
The OSRAM 64638 HLX is a reflectorless , low-voltage halogen lamp designed for specialized luminaires and demanding optical systems. Thanks to its xenon gas filling, characteristic of the XENOPHOT (HLX) family, it offers up to 10% more luminous flux than a conventional halogen lamp of the same wattage. It provides a stable color temperature of 3100 K , a CRI of 100 , a luminous flux of 2970 lm , and a nominal life of 300 hours . Its G6.35 base, 30.0 mm LCL , and carefully aligned filament ensure a uniform and repeatable beam in medical fiber optic applications, microscopy , laboratory analysis , UV curing , and surgical and dental lighting. It is dimmable , has an "any" burn-in position , and compact dimensions (50.0 mm length; 13.0 mm diameter) that facilitate integration into existing equipment.
Main features
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HLX (XENOPHOT) technology: xenon filling for up to 10% more light with the same consumption.
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Optics and color: 3100 K, CRI 100 , 2970 lm nominal.
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Emission geometry: LCL 30.0 mm ; illuminated field 5.3 × 2.6 mm² ; filament length 5.30 mm.
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Electrical: 24 V AC, 100 W; adjustable .
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Dimensions: length 50.0 mm; diameter 13.0 mm; base G6.35 .
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Nominal life: 300 h; burn position: any .
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Construction: High-purity quartz and precise filament alignment for a homogeneous beam and instant ignition.
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Energy label: EEI B (according to family documentation).
Product benefits
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More light at the same power: greater efficiency compared to standard halogens, useful where every lumen counts (endoscopy, microscopy, inspection).
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Reference color: Ra 100 for accurate recognition of fabrics, samples and colors.
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Photometric stability: virtually constant flux throughout the service life.
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Easy integration: G6.35 bi-pin format and 30mm LCL widely adopted in optical equipment.
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Total control: compatible with intensity regulation in low voltage equipment.
Use cases
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Medical and dental fiber optics : light sources for fibers and procedure lamps.
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Microscopy and laboratory : sample illumination, inspection and analysis.
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UV curing and processes : specific curing equipment and industrial systems.
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Special luminaires : optical and imaging devices that require reflectorless halogen.
Frequently Asked Questions
Does this part number include XIR infrared coating?
No. The 64638 HLX is the HLX (xenon) version. The XIR coating is available on some models in this family and provides up to 30% greater efficiency, but it is not part of this model unless the designation explicitly states "XIR".
Can it be installed in any orientation?
Yes. The specified burn position is any , which makes it easy to use on multiple devices.
Is it adjustable?
Yes, it is dimmable with compatible 24V dimming equipment.
Does it require an enclosed light fixture?
Yes. For safety, halogen lamps must be operated in suitable, enclosed fixtures that contain heat, UV radiation, and potential fragments in case of breakage.
Installation and safety notes
- Use only in luminaires designed for 24V/100W G6.35 .
- Do not touch the bulb with your fingers; handle with gloves or a lint-free cloth.
- Verify adequate ventilation and dissipation of the equipment; respect the nominal voltage.
Project description
OSRAM 64638 HLX reflectorless low voltage halogen lamp, 24 V AC, 100 W, G6.35 base, 3100 K , CRI 100 , 2970 lm , LCL 30.0 mm , length 50.0 mm, diameter 13.0 mm, illuminated field 5.3 × 2.6 mm², nominal life 300 h, burn-in position any , dimmable; XENOPHOT HLX family.
