OSRAM 64655 HLX (EHJ) - Bi-pin halogen lamp 250 W, 24 V, G6.35 (XENOPHOT · 50 h)
The OSRAM 64655 HLX is a low-voltage, reflectorless halogen lamp with a G6.35 base, widely used in microscopy , fiber optic illumination , laboratories, analysis, and UV curing. It belongs to the XENOPHOT (HLX) family, which uses xenon as a fill gas to offer up to 10% more luminous flux than standard halogen lamps with the same power consumption. It provides 10,000 lm at 3,550 K , has a CRI Ra 100 , a nominal life of 50 hours , and is dimmable . Its filament is precisely aligned for a stable beam geometry and optimal coupling to fiber optic systems or collectors. The s90 burn-in position allows operation in a wide range of orientations around the vertical.
Main features
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HLX performance: up to +10% flow with the same consumption compared to conventional halogen lamps.
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Power/Voltage: 250 W · 24 V (AC).
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Light and color: 10,000 lm · 3,550 K · Ra 100 .
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Precision optics: 7.1 × 3.6 mm² illuminated field and 33 mm LCL for stable focusing.
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Regulation: dimmable (continuous attenuation with compatible equipment).
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Compact construction: Ø 12.5 mm · length 55 mm .
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Working position: s90 (±90° with respect to the vertical).
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Nominal life: 50 h .
Product benefits
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More light with the same power: XENOPHOT HLX technology to maximize usable output.
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Reference color rendering: Ra 100 for true color in inspection and display.
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Photometric stability: virtually constant flux throughout the service life.
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Simple integration: standardized measurements and aligned filament for efficient coupling to optics/fibers.
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Total control: instant start and smooth dimming .
Use cases
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Microscopy and scientific imaging systems.
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Fiber optic lighting in medical and inspection equipment.
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Laboratory and analysis ; UV curing (with equipment's own optics/filters).
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Suspended surgical and dental lighting (depending on equipment compatibility).
Frequently Asked Questions
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What does HLX mean? It's OSRAM's XENOPHOT designation: the use of xenon as a fill gas for +10% flux compared to standard lamps.
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Is it dimmable? Yes, it supports dimming with regulators suitable for the system.
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What does s90 indicate? It means that the lamp can operate within ±90° of the vertical , offering great freedom of mounting.
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Safety recommendations? Use in suitable luminaires with screens/protections that contain fragments in case of breakage and avoid exposure to UV/IR. High operating temperature must be clearly indicated.
Installation and best practices
- Check 24V at terminals; overvoltage drastically reduces lifespan.
- Handle with gloves or cloth; do not touch the quartz.
- Respect the LCL 33 mm for focusing on the optical system.
- Ensure ventilation in the light fixture and avoid vibrations.
Project description
OSRAM 64655 HLX (EHJ) halogen lamp without reflector; 250 W , 24 V (AC) ; G6.35 base; 10,000 lm ; 3,550 K ; Ra 100 ; LCL 33 mm ; illuminated field 7.1 × 3.6 mm² ; Ø 12.5 mm × 55 mm ; burn-in position s90 (±90° with respect to vertical); nominal life 50 h ; dimmable . XENOPHOT HLX series (+10% flux).
