Optoma HD23-B Compatible Projector Lamp. – Bulb Solutions, Inc.
Original Philips Projector Replacement Lamp for Optoma HD23 | eBay
Where to Buy Optoma HD23 Projector Lamps Bulbs
OPTOMA Original Inside Lamp for OPTOMA THEME-S HD23 (Q8NJ) Projector (Original Lamp in Compatible Housing) - Projector Lamps from AV Parts Master Ltd UK