For most conference rooms the right projector is a laser model of 4,500–6,000 ANSI lumens with WUXGA or 1080p resolution, a zoom lens or lens shift for flexible mounting, and network control. The exact choice depends on three things: the distance to the farthest seat, which sets image size; the light on the screen during meetings and video calls, which sets brightness; and how people connect, which sets the inputs. This guide walks through each decision with tables by room size.
Key takeaways
- Size the image for the farthest seat: image height about one-sixth of that distance for reading presentations.
- Meeting-room lighting is set for video-call cameras, so plan brightness for lights on — usually 4,500–6,000 ANSI lumens.
- Use WUXGA or 1080p; 16:10 matches most business laptops.
- Standardise one or two models across all rooms to simplify spares, control programming and support.
Step 1 — size the image for the farthest seat
Start from the room, not the projector. Measure from the screen to the farthest seat and use the long-standing AV guideline for presentation content: image height of about one-sixth of that distance (the '6×' rule; see the resolution guide for the 4-6-8 rule).
| Room type | Seats | Farthest viewer | Image height | Typical 16:10 image |
|---|---|---|---|---|
| Huddle room | 4–6 | 3–4 m | 0.5–0.7 m | 40–55" (often a flat panel) |
| Meeting room | 8–12 | 5–6 m | 0.85–1.0 m | 65–75" |
| Boardroom | 12–20 | 7–8 m | 1.15–1.35 m | 85–100" |
| Training room | 20–40 | 9–12 m | 1.5–2.0 m | 110–150" |
| Multipurpose / town hall | 40+ | 12 m+ | 2.0 m+ | 150"+, consider engineering models |
Image height ≈ farthest viewer ÷ 6 for presentation content.
Step 2 — brightness for lit rooms and video calls
Conference rooms are rarely dark. Lighting is set so that people look good on video-call cameras, and that same light falls on the screen. Use the contrast method from the lumens guide: projected illuminance ≈ (target contrast − 1) × ambient light on the screen, multiplied by screen area.
| Room | Image | Lighting on screen | Recommended ANSI lumens |
|---|---|---|---|
| Meeting room | 65–80" | Controlled, 30–50 lux | 3,500–4,500 |
| Boardroom | 85–120" | Lights on for video, 50–100 lux | 4,500–6,000 |
| Boardroom with glass walls | 85–120" | 100 lux+ | 6,000+ or an ALR screen |
| Training room | 110–150" | Lights on, 50 lux | 6,000–10,000 |
Step 3 — resolution and aspect ratio
Most business laptops are 16:10, while video-conferencing systems usually send 1080p (16:9). WUXGA (1920 × 1200) shows laptop content edge to edge and 1080p video with thin bars; 1080p does the opposite. Either is a good choice for boardrooms; WXGA remains fine for small meeting rooms where text is large. Avoid 4:3 XGA in new meeting rooms.
Step 4 — placement, throw and lens shift
Ceiling mounts are often constrained by lights, air-conditioning and beams. A zoom range of about 1.6× and vertical lens shift give the installer room to work. Calculate the distance range with the throw distance guide before choosing the model; the PSL-5000U adds horizontal and vertical lens shift for off-centre mounts.
Step 5 — connectivity
- HDMI at the table via a table box or switcher, with HDCP support for protected content.
- HDBaseT to send video, control and audio over one category cable up to about 100 m between switcher and projector — avoids long HDMI runs in the ceiling.
- USB-C laptops — provide a USB-C input on the switcher or a tested adapter at the table.
- Wireless presentation — a dedicated wireless presentation system reduces cable clutter; check it supports your laptops and your IT security rules.
- Video conferencing — the codec or room PC feeds the projector; decide whether the projected image or a second display shows the far-end participants.
Step 6 — control, monitoring and noise
- Control — LAN and RS-232 control for room systems from Crestron, Extron, AMX or similar; PJLink for basic network control.
- Monitoring — network status, light-source hours and error alerts let IT manage dozens of rooms remotely.
- Auto power — power-on with signal and auto-off after inactivity save energy and light-source hours.
- Noise — choose 30–32 dB or quieter in normal mode for small rooms; fan noise competes with speech and conference microphones.
Projector or flat panel for meeting rooms?
| Situation | Usually better |
|---|---|
| Image up to about 86", small room | Flat panel |
| Image 100" and larger | Projector |
| Very bright room, no light control | Flat panel or projector with ALR screen |
| Many rooms, tight budget per square metre of image | Projector |
| Divisible rooms or multipurpose spaces | Projector (motorised screen keeps walls free) |
For classrooms, the same trade-offs are covered in interactive projector vs interactive flat panel.
Standardising across many rooms
- Choose one model per room type — for example small, boardroom and training — rather than a different model per room.
- Use the same control driver and settings template everywhere.
- Keep a small spare pool and identical mounts so a failed unit can be swapped in minutes.
- Record firmware versions and light-source hours centrally.
- Review brightness and noise settings after the first month of use.
Our commercial laser range is designed as such a family: PSL-3500U for meeting rooms, PSL-4500U for boardrooms and PSL-5000U for large rooms.
Recommended models
Frequently asked questions
Questions on this topic
How many lumens does a conference room projector need?
What size screen do I need for a conference room?
Is WUXGA or 4K better for meeting rooms?
Can a projector work with Crestron or Extron systems?
Equipping several meeting rooms?
Send room sizes, seat counts and lighting — we return a room-by-room model plan with brightness calculations.