Osram BTL Photo-Optic Halogen Lamp - 500W 120V P28s

Osram BTL Photo-Optic Halogen Lamp - 500W 120V P28s

The Osram  BTL Photo-Optic Halogen Lamp - 500W 120V P28s is an OSRAM specialty photo-optic halogen lamp used in professional projection, microfilm, microscope, studio, medical, fiber-optic, and entertainment equipment. This lamp should be selected by matching the ordering abbreviation, wattage, voltage, base, bulb shape, and rated life to the existing lamp or equipment manual.

This product is listed with 500W, 120V, P28s base, T6 bulb shape, 11000 lumens, and 750 hour rated average life. It is intended for specialized optical systems where correct fit and light output are critical.

Product Overview

OSRAM photo-optic halogen lamps are designed for equipment where optical alignment, color stability, and lamp geometry matter. These lamps are commonly used in projectors, microfilm readers, microscopes, studio fixtures, medical illumination, fiber-optic illuminators, enlargers, printers, and entertainment lighting.

Technical Specifications

Compatible Applications

• Projectors and slide projection systems
• Microfilm and microfiche readers
• Microscopes and laboratory illuminators
• Studio, theatre, TV, and video lighting equipment
• Medical and dental illumination systems where specified
• Fiber-optic illuminators and optical equipment

Helpful Buying Notes

• Replacement Accuracy: Match the ordering abbreviation, wattage, voltage, base, and bulb shape before ordering.

Before Ordering Verify

• Ordering Code: Match OSRAM 54685 / BTL to the existing lamp or equipment manual.
• Voltage: Confirm the equipment is rated for 120V operation.
• Wattage: Confirm the fixture or instrument is rated for 500W.
• Base: Confirm the socket accepts P28s lamps.
• Bulb Shape: Confirm the T6 bulb shape and physical clearance.
• Life vs Output: Long-life versions may produce fewer lumens, while high-output versions may have shorter life.

Safety & Installation Guidelines

• Use Approved Fixtures: Install only in equipment designed for this lamp type, wattage, voltage, and base.
• Do Not Touch Quartz: Use clean gloves or a lint-free cloth to prevent oil contamination and premature lamp failure.
• Disconnect Power: Turn off and unplug equipment before replacing the lamp.
• Allow Cooling: Let the lamp and fixture cool completely before handling.
• Optical Alignment: Seat the lamp correctly to maintain proper focus, beam position, and equipment performance.

Wholesale & Project Support

ADL Supply supports schools, labs, AV departments, medical facilities, maintenance teams, and commercial buyers with OSRAM photo-optic lamp sourcing, replacement identification, and volume order support.

For volume pricing, availability, or help confirming the correct OSRAM replacement lamp, contact ADL Supply at 1-800-235-3489.