Product Overview
EFR 15V 150W MR16 Photo-Optic Lamp, GZ6.35 Base (A1/232) – 32 mm Focal Distance
High-output halogen with dichroic reflector engineered for slide projectors, microscopes, and fiber-optic illuminators. Cross-references: OSRAM 64634 HLX (EFR), Philips 6423FO / 31490-6, Ushio 1000272.
Key Benefits
- Precise 32 mm focal distance for crisp, even focus in optical systems
- Dichroic (heat-reflecting) reflector helps keep heat out of the beam
- High color fidelity (photo-grade halogen, ~3350–3400 K) for accurate viewing
- Compact MR16 form factor for easy drop-in replacement
Specifications
| ANSI / LIF Code | EFR / A1/232 |
|---|---|
| Wattage / Voltage | 150 W / 15 V |
| Base | GZ6.35 (2-pin) |
| Bulb / Reflector | MR16, dichroic coated |
| Focal Distance | 32 mm |
| Color Temperature | ~3300–3400 K (brand variant) |
| Filament | C-8 (axial) |
| Rated Life | ~50 hours (at rated voltage) |
| Max Overall Length | ~42 mm |
| Diameter | ~50–51 mm |
| Beam | Focused, photo-optic |
Typical Applications & Equipment
- 8 mm/slide projectors, microscopes, fiber-optic illuminators
- Known fits: Agfa Gevaert C66; Olympus operating microscopes; ZEISS parts 310184 / 310198
Cross-Reference / Equivalent Numbers
- OSRAM: 64634 HLX (Xenophot), EFR / A1/232
- Philips: 6423FO / 31490-6
- Ushio: 1000272, JCR15V-150W/MR16
Safety & Installation
- Use only in approved enclosed halogen fixtures
- Handle with gloves; avoid touching the quartz envelope
- Operate base-down or horizontal (per fixture spec)
- Verify focal distance and reflector alignment for best focus
