PHILIPS FOCUSLINE EPZ/DJT | 50W 13.8V MR16 | 3150K Photo-Optic Halogen

The Philips 314963 (EPZ/DJT) Focusline is a professional-grade MR16 photo-optic halogen lamp designed for precision specialty lighting applications. Operating at 13.8V and 50W, this lamp features a high-performance facetted reflector that delivers a concentrated, distortion-free beam. With a CRI of 100, it provides perfect color accuracy and a crisp 3150K color temperature, making it a critical component for medical equipment, projectors, and microscopy. Engineered with a standard GX5.3 bi-pin base, the EPZ/DJT ensures a secure mechanical fit and reliable electrical contact in high-vibration environments. As part of the Focusline series, this lamp is trusted worldwide as a genuine OEM replacement for high-end optical systems.

Product Overview

The Philips Focusline MR16 series is defined by its quartz construction and meticulous filament positioning. This precision allows for optimal beam performance and a consistent light output throughout the lamp's 1000-hour rated life. The EPZ/DJT utilizes full-spectrum halogen technology, making it indispensable for medical diagnostics and scientific microscopy where color differentiation is vital. Its facetted reflector is specifically tuned to maximize light throughput in optical paths, reducing heat build-up while maintaining the high-intensity illumination required by specialized OEM equipment.

• Optimal Beam Control: The facetted aluminum reflector ensures a uniform light distribution without "hot spots" or shadows.
• Superior Color Accuracy: A CRI of 100 guarantees that colors are rendered with maximum fidelity.
• High-Stability Filament: The C-6 filament is reinforced to withstand the thermal stresses of repeated power cycles.
• Trusted Cross-Reference: Directly replaces Osram 014142, Sylvania 54164, and Ushio 1000350.

Technical Specifications

• Brand: Philips Focusline
• Product Code: 314963 (31496)
• ANSI Code: EPZ/DJT
• Wattage: 50W
• Voltage: 13.8V
• Base Type: GX5.3 (Bi-Pin)
• Bulb Shape: MR16 (Facetted Reflector)
• Color Temperature: 3150K
• Rated Average Life: 1,000 Hours
• CRI: 100
• Bulb Diameter: 50.8mm (2 inches)
• Filament Type: C-6

Safety & Installation Guide

• Enclosed Fixtures Only: This lamp must be used in approved, fully enclosed halogen fixtures to contain potential lamp fragments in the event of failure.
• Avoid Skin Contact: Never touch the quartz bulb with bare hands. Skin oils can create hot spots that lead to premature breakage. Use a clean cloth or gloves for installation.
• Voltage Regulation: Do not exceed the rated 13.8V. Operating at higher voltages will dramatically reduce lamp life and can cause catastrophic failure.
• Thermal Management: Allow the lamp to cool completely before attempting replacement. The lamp and reflector reach extremely high temperatures during operation.

Primary Applications

• Medical Equipment: Surgical lighting, dental curing lights, and diagnostic projectors.
• Microscopy: High-precision light sources for laboratory and industrial microscopes.
• Specialty Projection: Microfilm readers, overhead projectors, and slide viewing systems.
• Technical Lighting: Optical inspection systems and fiber-optic illuminators.