OSRAM HMI 575 W/DXS — SFc10-4 Twin Cap HMI Lamp (49,000 lm, 6,000 K, CRI 90) for cinema, TV and events

OSRAM HMI 575 W/DXS — SFc10-4 Twin Cap HMI Lamp (49,000 lm, 6,000 K, CRI 90) for cinema, TV and events

The OSRAM HMI 575 W/DXS is a short-arc , dual-terminal metal halide lamp designed for TV studios, film, professional photography, and live events . It delivers 49,000 lm with a color temperature of ~6,000 K (daylight) and a CRI of 90 , ensuring reliable on-camera color reproduction. Its SFc10-4 base and eXtreme Seal (DXS) design provide thermal robustness (up to 450 °C in the clamp area), hot restrike , and excellent arc stability. It operates at 575 W , 95 V , and 7 A (AC); working position: any . Overall length: 135 mm , diameter: 21 mm , mounting length: 115 mm , weight: approx. 33 g . Reference rated life: 1,000 h .

Main features

• Power / Voltage / Current: 575 W · 95 V · 7 A (AC).
• Base: SFc10-4 (double socket).
• Photometry: 49,000 lm · 6,000 K · CRI 90 · typical efficacy ~85 lm/W.
• Dimensions and mass: Ø 21.0 mm · length 135.0 mm · mounting length 115.0 mm · 33 g.
• Operation: hot restart , working position: any .
• DXS construction: optimized sealing ( eXtreme Seal ) for high temperatures in clamp (up to 450 °C).
• Nominal life: 1,000 h (manufacturer's test conditions).

Product benefits

• Stable daylight (~6000K) with CRI 90 for skins and natural materials in camera.
• Short arc and high luminance for efficient projection and precise optical coupling.
• Hot restrictrike to reduce waiting times in filming and live broadcasting.
• Thermal and mechanical robustness thanks to the DXS design and the SFc10-4 base.
• High efficiency in its class (≈85–100 lm/W depending on application and equipment).

Use cases

• TV and film studio: Fresnel, PAR and indoor/outdoor projection.
• Professional photography and video: main or fill light with daylight-type spectrum.
• Events and entertainment: HMI double-ended stage lights and follow spots.

Frequently Asked Questions

• Which is the correct base? This HMI 575 W/DXS model has a double SFc10-4 socket . If your fixture indicates G22 , it corresponds to the HMI 575 W/GS variant (single socket). Always check the socket specified by the luminaire.
• Can it be restarted while hot? Yes, with the appropriate ballast/igniter ( hot restrike ).
• Typical ignition values? Data sheets indicate approximately 4.5 kV (kHz cold start) and 7/20 kV (MHz cold/hot start; max. 25 kV).
• Safety recommendations? Operate only in enclosed housings with UV filters; the lamp operates at high internal pressure and contains mercury.

Installation and maintenance recommendations

• Check compatibility SFc10-4 , mounting length 115 mm and thermal space.
• Use an electronic ballast for HMI 575 W with hot restart capability and appropriate starting voltages.
• Do not touch the quartz; handle with clean gloves . Keep reflectors and optics clean.
• Plan preventive replacement around 1000 h or according to equipment illuminance/telemetry drop.

Project description

SFc10-4 dual-end HMI lamp; model HMI 575 W/DXS ; 575 W , 95 V , 7 A (AC); 49,000 lm ; 6,000 K ; CRI 90 ; length 135.0 mm ; mounting length 115.0 mm ; Ø 21.0 mm ; weight 33 g ; working position: any ; hot re-engagement ; DXS design with thermal resistance in clamp up to 450 °C ; rated life 1,000 h .