Best ALR Projector Screens Canada 2026 — Ambient Light Rejecting Screen Guide
ALR (Ambient Light Rejecting) projector screens are engineered to reflect the projector's light toward the viewer while deflecting ambient light from windows, lamps, and ceiling fixtures back away from the viewing zone. In a bright Canadian living room, an ALR screen can deliver a sharp, high-contrast image that a standard white screen simply cannot produce. Understanding which type of ALR screen matches your room's lighting and your projector's throw ratio is the key to getting the best result.
How ALR Technology Works
Standard projector screens reflect light in all directions equally — a property called Lambertian (diffuse) reflectance. An ALR screen instead uses directional reflectance: microscopic optical structures on the screen surface are shaped to redirect light from the projector's specific throw angle toward the audience, while light arriving from other angles (ceiling fixtures, windows, lamps) is absorbed or reflected away from the viewer. The result is dramatically higher perceived contrast in ambient light conditions compared to any matte-white surface.
There are four main ALR technologies on the market, each suited to a different room configuration and projector type.
Angular-Reflective ALR: Grey Crystal & Black Crystal Screens
Angular-reflective ALR screens — sold under names like Grey Crystal ALR and Black Crystal ALR — use a multi-layer optical coating that preferentially reflects light arriving from below the screen's centre axis (the projector direction) while absorbing light from above (ceiling) and the sides (windows and lamps). These screens are designed for use with standard long-throw and short-throw projectors with a throw ratio of 0.8:1 or higher.
- Grey Crystal ALR: A mid-grey base with angular-reflective coating. Delivers excellent ambient light rejection with a wide viewing angle (100°+), natural colour reproduction, and a contrast boost over matte white in rooms with overhead lighting. Gain is typically 0.8–1.2. Best choice for family rooms and living rooms with pot lights.
- Black Crystal ALR: A darker grey-black base for even deeper blacks and higher contrast ratio. Suited to rooms with heavy ambient light from multiple directions or where a home-cinema feel is desired without a fully dark room. Viewing angle is slightly narrower than grey ALR (80°–100°). Gain is typically 0.5–0.9.
Both types work with virtually any standard projector brand and do not require a UST-specific unit. Browse Angular-Reflective ALR Screens →
Fresnel ALR Screens
Fresnel ALR screens use a concentric groove structure (the same principle as a lighthouse Fresnel lens) to focus reflected light into a defined horizontal viewing cone. This produces gain values of 1.2 to 2.0 — significantly brighter than angular-reflective screens — and near-total rejection of ambient light from outside the cone. The trade-off is a narrower sweet spot: viewers seated more than 30°–40° off-centre will notice brightness drop-off.
Fresnel ALR is the preferred choice for ultra-bright rooms — south-facing rooms with floor-to-ceiling windows, sunrooms, or open commercial spaces — and for projectors with lower lumens that need every bit of on-screen brightness. They are also compatible with certain UST projectors when the Fresnel groove pitch is matched to the throw angle. Shop Fresnel ALR Screens → | CLR Screens →
UST / Lenticular ALR Screens
For laser TV projectors with a throw ratio of 0.4:1 or less, standard angular-reflective and Fresnel screens are not optimised for the extreme upward light angle. UST lenticular ALR screens — such as the TrueThrow CBSP, BSP, and HBSP — use a micro-lenticular (tiny cylindrical lens) structure bonded to a black absorbing base to capture the steep angle light from the floor-level projector and reject ceiling and window light simultaneously.
If your projector is a Hisense PL1, LG CineBeam, Samsung The Premiere, or any unit with a throw ratio below 0.4, you need a UST lenticular screen, not a general-purpose ALR screen. Shop UST Lenticular ALR Screens →
CLR (Ceiling Light Rejecting) Screens
CLR screens are a specialised subset of ALR designed specifically for rooms where overhead ceiling lighting is the dominant or sole source of ambient light — for example, a basement home theatre with recessed pot lights directly above the seating area. Unlike angular-reflective ALR that handles ceiling, side, and partial front ambient light, CLR is optimised to maximise ceiling light rejection while maintaining a wider viewing angle than Fresnel.
CLR screens are typically used with standard throw projectors (not UST) and deliver gain values of 0.8–1.2 with a viewing angle of 100°–140°. They are ideal for dedicated basement cinemas and media rooms where ceiling fixtures cannot easily be blocked or dimmed. Shop CLR Screens →
ALR Screen Comparison Table
| Feature | Grey ALR (Crystal) | Black ALR (Crystal) | Fresnel ALR | UST Lenticular (CBSP/BSP) |
|---|---|---|---|---|
| Best for | General living rooms, overhead light | High-ambient rooms, cinema feel | Ultra-bright rooms, max gain | Laser TV / UST projectors only |
| Gain | 0.8–1.2 | 0.5–0.9 | 1.2–2.0 | 0.5–1.0 |
| Viewing angle | 100°–120° | 80°–100° | 60°–80° | 90°–110° |
| Works with UST projector? | No (standard throw only) | No (standard throw only) | Some models | Yes (≤0.4 throw ratio) |
| Price range (CAD) | $$ | $$ | $$$ | $$$–$$$$ |
How to Choose the Right ALR Screen
Step 1: Identify Your Light Sources
The source and direction of ambient light in your room is the single most important factor in choosing an ALR screen type:
- Ceiling/overhead pot lights: Choose a CLR screen or a UST lenticular if using a laser TV projector.
- Side windows or lamps: An angular-reflective Grey or Black Crystal ALR handles mixed directional ambient light best.
- All-around bright light (large windows, open-concept): A Fresnel ALR screen's narrow cone and high gain will provide the most contrast in heavily lit environments.
Step 2: Confirm Your Projector Type
If your projector throw ratio is 0.4 or below, you must use a UST lenticular ALR screen. If your throw ratio is above 0.8, use a standard Grey ALR, Black ALR, Fresnel, or CLR screen depending on your lighting. Short-throw projectors (0.4–0.8 ratio) require careful matching — check the specific screen manufacturer's compatibility guidance.
Step 3: Consider Seating Layout
Wide sofas or seating spread across the room benefit from wider viewing angles — Grey ALR and CLR screens maintain brightness across wider seating zones. If your primary viewing position is centred in front of the screen, a Fresnel screen's narrow cone is not a limiting factor and its higher gain can be advantageous.
TrueThrow ALR Screen Lineup
- Grey Crystal ALR: Wide-angle, natural colour, best for mixed-light living rooms. View →
- Black Crystal ALR: Deep blacks, high contrast, bright-room performance. View →
- CLR Screens: Ceiling-light-specific rejection for basement and dedicated cinemas. View →
- Fresnel ALR: Maximum gain and ambient light rejection for ultra-bright environments. View →
- CBSP / BSP / HBSP UST Lenticular: For laser TV and UST projectors. View →
Free shipping on all ALR screens across Canada.
Frequently Asked Questions
Will an ALR screen completely eliminate washout in a bright room?
An ALR screen dramatically reduces — but does not entirely eliminate — the impact of ambient light. A Grey or Black Crystal ALR screen in a moderately lit room will produce a noticeably sharper and more contrasty image than a matte-white screen. In a very brightly lit room, a Fresnel screen with a high-lumen projector gives the best result, but some ambient light management (blinds, curtains) still helps.
Can I use an ALR screen with any projector?
Angular-reflective ALR screens (Grey and Black Crystal) work with any standard long-throw or short-throw projector. UST lenticular ALR screens require a UST projector (throw ratio ≤ 0.4). Using an ALR screen designed for a different throw angle than your projector can result in image quality worse than a plain white screen.
Do ALR screens affect colour accuracy?
High-quality ALR screens are designed to be colour-neutral. Grey ALR screens introduce a slight brightness reduction (lower gain) but maintain accurate colour. Black ALR adds more contrast at the cost of peak white brightness. Most modern ALR screens from reputable manufacturers will not introduce visible colour tinting or shift.
What is the difference between ALR and CLR?
ALR is the broad category for any screen that rejects ambient light directionally. CLR (Ceiling Light Rejecting) is a specific ALR subtype optimised to reject light arriving from a steep downward angle (overhead ceiling fixtures). All CLR screens are ALR screens, but not all ALR screens are CLR screens — general angular-reflective ALR handles a wider range of light directions.
Is a Black Crystal ALR screen too dark for a small room?
In a small room (under 12 feet viewing distance) with a projector rated at 2,000+ lumens, a Black Crystal ALR screen works very well — the deep base enhances native contrast and the projector still has ample brightness. In a large room with a lower-lumen projector, a Grey Crystal ALR or Fresnel screen may deliver a better perceived brightness-to-contrast balance.