Keep compatible Optoma projectors in service with a replacement lamp designed to bring back usable brightness and stable performance. The BTI BL-FS180C-BTI supports the Optoma HD640, HD65, HD700X, Compact 226, and Compact 228, making it a focused fit for environments that depend on these models for daily presentations, training, and shared viewing. When lamp output drops, image quality suffers first: text loses clarity, colors flatten, and rooms need more light control to stay readable. Replacing the lamp is the most direct way to recover projection performance without the cost of a full projector refresh. This BTI lamp is a practical option for organizations that want to extend the life of installed Optoma hardware while keeping replacement planning straightforward. Because it is matched to specific projector models, it helps reduce guesswork during procurement and maintenance. That matters in classrooms, conference rooms, and support spaces where downtime is more expensive than the part itself. Choose this lamp when you need a replacement that aligns with the projector you already own and the expectations of a professional AV environment.