Ushio UXR-300ES - Ceramic Xenon Lamp with Parabolic Reflector 300W (class) / 260W electrical, 13V, Pre-aligned for Scientific and Medical Lighting
The Ushio UXR-300ES is a short-arc xenon lamp with a pre-aligned ceramic parabolic reflector , designed to deliver continuous spectral output with a stable color temperature of 6100 K and superior lumen maintenance throughout its lifespan. Its compact and robust body , new window design that prevents scratches and contamination , and ISO- controlled production processes ensure consistent lamp-to-lamp performance in demanding applications such as endoscopy, surgical lighting, microscopy, borescopy, spectroscopy, machine vision, solar simulation, and projection .
It operates in constant current mode at 13 V with a nominal current of 20 A (range 18–21 A), with an electrical power of 260 W —known in the market as “ 300 W class ”—and provides 3250 lm of visible output (≈ 1400 lm through a 5 mm aperture ). The ozone- free version minimizes radiation below 200 nm. It features a horizontal operating position and requires forced cooling ; the manufacturer specifies a current ripple of ≤ 5% , a minimum AC trigger voltage of 23 kV , and a minimum supply voltage of 140 V. The 6-32 UN-2B threaded mounting pattern at 120° and the 25.4 mm window facilitate its integration into 300 W equipment for clinical and industrial use.
Main features
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Technology: Short arc xenon with pre-aligned ceramic parabolic reflector.
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Power / supply: class 300 W; 260 W electrical at 13 V and 20 A (range 18–21 A).
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Spectrum and color: continuous visible-NIR output; 6100 K (high color stability).
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Initial luminous flux: 3250 lm (≈1400 lm with 5 mm aperture); radiant output 43 W.
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Lifespan: 500 h (guaranteed value at 60% of lumens) and 1000 h useful (at 50%), according to the manufacturer's criteria.
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Construction: sealed metal-ceramic ceramic body; contact- protected window ; ozone-free .
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Geometry and assembly: window diameter 25.4 mm ; total length 42.6 mm ; body diameter 32.8 mm ; arc gap 1.0 mm ; fixing pattern 3× 6-32 UN-2B at 120°.
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Operating conditions (lamp): horizontal position ; max. body temperature 150 °C and base temperature 200 °C ; forced cooling required .
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Power supply conditions: constant current and/or power control; ripple ≤ 5% pp ; ignition ≥ AC 23 kV ; mains voltage ≥ 140 V.
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Quality: manufactured in an ISO certified plant with high quality control .
Product benefits
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Photometric and chromatic consistency , with controlled output degradation and repeatability between units.
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Quick integration thanks to its pre-aligned parabolic reflector and standard mounting pattern, reducing downtime.
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Reliable image and color thanks to the continuous spectrum and stable color temperature, key in endoscopy and microscopy.
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Greater availability with a specified useful life of up to 1000 h (useful), optimizing maintenance.
Compatibilities (examples)
Used in numerous 300W light sources for endoscopy and microscopy. For reference, versions of this lamp are available for the Olympus CLV-190/CLV-290 (and associated consumables such as MAJ-1817 ). Always check the equipment manual for the exact model , orientation , and electrical and mechanical requirements before replacing.
Use cases
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Endoscopy and surgical beacons in clinical settings.
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Microscopy , borescopy and machine vision in R&D and production.
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Spectroscopy , solar simulation and projection in laboratories and optical benches.
Frequently Asked Questions
Is it 300W or 260W? It's a " class 300W " lamp, widely known as such for its application; electrically, it operates at 260W (13V, 20A). Both figures are correct according to the datasheet.
How should it be installed? Horizontal orientation , forced cooling (heat sinks on both bases and thermal grease), constant current source with ripple ≤ 5% and ignition ≥ AC 23 kV . Avoid contact of the window with surfaces to prevent damage.
Project description
Ushio UXR-300ES parabolic ceramic xenon lamp (code 5003098): electrical power 260 W; voltage 13 V; current 20 A (range 18–21 A); ozone-free spectrum ; color temperature 6100 K ; visible flux 3250 lm (1400 lm at 5 mm aperture); radiant output 43 W ; life 500 h (60% lumens) / 1000 h useful (50% lumens) ; arc gap 1.0 mm ; window Ø 25.4 mm ; body diameter 32.8 mm ; total length 42.6 mm ; mounting 3× 6-32 UN-2B thread at 120°; horizontal working position; forced cooling ; ripple ≤ 5% pp; ignition ≥ AC 23 kV; mains voltage ≥ 140 V.
