How to choose a projector that can be used in a bright room | What is the lumen count needed for daytime viewing?

Why is it difficult to see a projector in a bright room?

Many people probably think that projectors can only be used in dark rooms. Indeed, many conventional projectors were designed with dark rooms in mind, and the projected image could appear washed out in a bright living room or a room with the lights on during the day.

The cause of this is ambient light. Sunlight entering through windows or indoor lighting overlapping the image projected onto the screen or wall reduces contrast, making the image difficult to see.

However, projector technology has advanced significantly in recent years. With the adoption of high-brightness LEDs and highly efficient optical systems, more and more models can be viewed comfortably even in bright rooms. The important thing is to correctly understand how much brightness (lumens) is required.

What are lumens? The difference between ANSI lumens and ISO lumens

“Lumen (lm)” is the unit used to indicate the brightness of a projector. The higher the number, the brighter the image, and the easier it is to see in bright environments. However, there are two types of lumen values listed in catalogs, so it is important not to confuse them.

ANSI Lumens (International Standard)

This is a brightness value calculated using a measurement method defined by ANSI (American National Standards Institute). It measures 9 points on the screen and calculates the average, providing a value that closely reflects actual viewing conditions. It is widely used as a reliable indicator for both professional and home use.

ISO Lumens (ISO Standard)

This is a measurement method defined by the International Organization for Standardization (ISO), with measurement standards that are almost equivalent to ANSI lumens. In recent years, more manufacturers have adopted ISO lumen表記.

Beware of "〇〇LM" in product catalogs

Some manufacturers may list the theoretical maximum output of an LED as "〇〇LM" in their catalogs. This is a different measurement method than ANSI/ISO lumens and can result in a significantly higher value than the actual brightness. It is recommended to check the measurement method before purchasing.

Recommended lumen levels for use in bright rooms

So, how many lumens are actually needed to view comfortably in a bright room? Here is a summary of recommended levels for different environments.

5 tips for using a projector in a bright room

In addition to lumens, optimizing the installation environment can provide a comfortable viewing experience even in a bright room. Try the following five tips.

① Use blackout curtains

The most effective method is to use blackout curtains. By using full blackout curtains, you can create a darkroom-like environment even during the day. This is the most cost-effective way to supplement the projector's brightness.

② Optimize the projection surface

Using a gray screen instead of a white wall improves contrast, making the image appear sharper even in bright environments. If you don't have a dedicated screen, you can use a gray cloth or roller blind as a substitute.

③ Shorten the projection distance

The shorter the projection distance, the brighter the screen will appear with the same lumen output. Short-throw and ultra-short-throw projectors can project a large image from a close distance to the wall, which is advantageous in bright environments as it minimizes light diffusion.

④ Set a smaller screen size

With the same lumen output, a smaller screen size increases the brightness (luminance) per unit area. When viewing during the day, keeping the screen size to around 80 inches instead of 100 inches will allow you to enjoy a clearer image.

⑤ Optimize the projector's placement

Consider the relationship between the projection direction and the window position to prevent direct sunlight from hitting the screen. Ideally, place the projector with your back to the window, and position the screen on the wall opposite the window.

Aestiquo Projector Brightness Performance

Aestiquo's projector lineup achieves sufficiently high brightness for home use. The P1 series, in particular, features Android TV 13.0 for streaming and a high-brightness LED design.

Checklist for choosing a projector for bright rooms

Checking the following points before purchasing can help you make a choice you won't regret.

Frequently Asked Questions

Summary

Here's a summary of key points for comfortably using a projector in a bright room.

• Choose a model with 3,000 ANSI lumens or more for daytime viewing.
• Check the lumen notation method (ANSI/ISO vs. catalog LM).
• Optimize the viewing environment by combining with blackout curtains.
• Utilize gray screens to improve contrast.
• Shorten the projection distance and set an appropriate screen size.
• Android TV-equipped models allow for comfortable streaming of Netflix and other services.

Aestiquo projectors offer both sufficient brightness for home use and ease of use. If you want to enjoy movies, games, and streaming in your bright living room, please check out our product page.