InFocus Projector Lamp Replacement: Model-by-Model Guide

InFocus projectors are everywhere in US classrooms, meeting rooms and church halls, and a great many of them are older than the support pages that once covered them. That combination — long service life, wide installed base, and models the manufacturer has moved on from — is exactly why InFocus lamp identification trips people up. This guide covers how InFocus part numbers relate to projector families, the naming overlaps that cause wrong orders, and how to identify the right module when the original documentation is long gone.

Quick reference

• Identify the projector first — the model string on the underside label, complete with any suffix.
• The lamp code is separate from the projector code and cannot be derived from it.
• IN and LP families overlap in naming but not in lamp parts; check the projector, not the family.
• Discontinued does not mean unavailable — lamps for long-retired InFocus models are still supplied.
• Module or bare bulb — decide before ordering; the housings are not universal.

Understanding the InFocus ranges

InFocus has used several naming conventions over the years, and installed fleets often contain more than one generation at the same site.

The LP series covers the earlier generation widely deployed in education and corporate meeting rooms. Many of these units are still in daily service, and their lamps remain a steady replacement item.

The IN series replaced it and spans a very wide range, from compact portable units to large-venue installation projectors. The breadth is the problem: two projectors with adjacent model numbers in this series can use entirely different lamp modules because they sit in different product tiers.

The ScreenPlay line targeted home theatre, where lamp choice interacts with brightness and colour expectations rather than just fit — see home theater projector lamps.

The practical consequence is the same across all three: identify by the exact projector model, never by the series.

Finding the right module

Start with the rating label on the projector's underside and record the model string exactly, including any suffix letters. Then find the lamp part number, which lives on the plastic frame of the old module, sometimes inside the lamp bay, and in the manual's consumables section.

If the projector is ceiling mounted and you cannot read the label, use the projector's information menu — it reports the model from firmware and saves a ladder. Our guide to finding your projector lamp part number covers all the hiding places in detail.

Where InFocus specifically catches people out is model families that share a housing. The lamp cage may drop into the bay of a sibling model and still be the wrong optical part, or fail to seat on the connector. Physical fit is not confirmation of compatibility.

Module or bare bulb?

InFocus lamps are supplied both ways and the choice is genuine rather than a marketing distinction.

A complete module is the bulb, the reflector and the plastic housing as one assembly. It drops in, it aligns itself, and it is what most buyers should choose.

A bare bulb is the quartz burner alone, transferred into your existing housing. It costs less and it is only sensible if your existing housing is undamaged and you are comfortable with the alignment. On projectors that have run hot for years, housings become brittle and crack during the transfer, which turns a saving into a second order.

Our guide to lamp vs bulb vs module covers the trade-off, and OEM vs compatible lamps covers the other axis of that decision.

Older InFocus units: is a lamp still worth it?

A fair question when the projector is a decade old, and the answer is more often yes than people expect.

The arithmetic is simple: compare the lamp cost against a replacement projector of equivalent brightness and resolution, and factor in the installation work — mount, cabling and alignment — that a replacement requires and a lamp does not. For an installed ceiling unit that still produces an acceptable image, a lamp is usually a fraction of the total cost of replacing it.

Where replacement wins is when the projector's resolution no longer matches what is being connected to it, or when the unit has developed faults beyond the lamp. Our guide to repair or replace works through that comparison, and diagnosing a dim image helps confirm that the lamp is genuinely the problem before you spend anything.

Getting the most from the new lamp

Three habits materially extend lamp life on InFocus units, and they apply to any projector.

Use eco mode where the room allows it. Lower lamp power extends rated life significantly. In a classroom with blinds, eco is usually indistinguishable from full brightness.

Keep the filter clean. Heat is what kills lamps, and a restricted filter raises internal temperature directly. Check it at every lamp change and in between.

Let the fans finish. Cutting mains power before the cool-down cycle completes stresses the quartz. Whether that is a habit or a wall switch wired to the projector, it shortens lamp life either way.

See how long projector lamps last for the full set.

Frequently asked questions

How do I find the right lamp for my InFocus projector?

Read the exact model string from the rating label on the projector's underside, including any suffix, then match the lamp part number from the old module or the manual. Do not identify by series alone — adjacent models in the same series often use different lamps.

Are lamps still available for discontinued InFocus models?

Generally yes. Lamps for long-retired InFocus projectors remain in supply well after the projectors themselves are out of production, which is why an older unit is usually worth keeping if it still projects acceptably.

Can I use a lamp from a similar InFocus model?

Not safely. InFocus reuses housings across model families, so a module may physically enter the bay of a sibling model while being the wrong optical or electrical part. Physical fit is not confirmation of compatibility.

Should I buy a module or a bare bulb?

A complete module for most people — it aligns itself and drops straight in. A bare bulb only if your existing housing is in good condition and you are confident transferring the burner, which is risky on older brittle housings.

Is it worth replacing the lamp in an old InFocus projector?

Usually, if the image is otherwise acceptable and the unit is ceiling installed, because a lamp costs a fraction of a replacement projector plus its installation. Replacement makes more sense when the resolution no longer suits what you connect to it.

Identifying with confidence

Exact projector model first, lamp part number second, and never assume compatibility from the series name. That sequence handles the whole InFocus range, including the units InFocus itself no longer lists.

Lamps Authority carries replacement lamps across the InFocus range, including models long out of production. Send us your projector model — or a photograph of the old module — and we will confirm the correct part before you order. Browse InFocus projector lamps or ask us to identify your lamp.