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Projector - a green, healthy, eye-protecting display device for learning and life

2023-06-21

The home and educational projector market has seen significant growth, especially during the pandemic when online classes became common. Parents sought alternatives to TVs and flat-panel displays due to concerns over eye strain from prolonged use. Projectors were perceived as healthier and more environmentally friendly.

So, why are projectors better for eye protection?

1. Diffuse Reflection from a Projector vs. Direct Reflection from a Flat-Panel or TV

Diffuse reflection occurs when light strikes a rough surface and is scattered in all directions, making it appear soft and reducing eye fatigue. In projectors, light is projected onto a screen or wall, where it is diffusely reflected, allowing it to enter the eye gently.

In contrast, direct light from TVs, electronic whiteboards, and tablets shines directly into the eye. If too bright, this can be harmful.

Overall, the diffuse reflection from projectors creates a softer, less irritating light, making them more eye-friendly compared to direct light sources.

2. Larger Display Screen

Using smaller screens like TVs, whiteboards, and tablets can lead to eye fatigue, as children strain to read small text and symbols. This can increase the risk of refractive errors and myopia. Additionally, fixed viewing positions can further contribute to eye strain. In contrast, using a large-scale projector can significantly reduce eye fatigue, making projectors a more eye-friendly option.

3. Understanding Projector Specifications

Brightness: Choose a projector with at least 3000 lumens for clear visibility on a 100-inch screen. Low brightness can lead to visual fatigue.
Resolution: Full HD 1080p is adequate for most educational purposes involving simple images and text.
Contrast: A contrast ratio of 5,000:1 or higher ensures clear text and color differentiation.
Brightness Uniformity: Ideal uniformity is 80-100%, reflecting consistent brightness across the screen. The optical lens quality affects this.
Color Gamut: A wider color gamut enhances color saturation. Common specs include BT.709 (HD standard) and DCI-P3 (digital cinema standard).
Keystone Correction: To prevent image distortion, ensure the projection is perpendicular to the screen. Keystone correction can be optical or digital.
Zoom Options: Use optical zoom or short-throw projectors for larger images in smaller spaces, reducing eye strain.

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Projector - a green, healthy, eye-protecting display device for learning and life

2023-06-21

So, why are projectors better for eye protection?

1. Diffuse Reflection from a Projector vs. Direct Reflection from a Flat-Panel or TV

In contrast, direct light from TVs, electronic whiteboards, and tablets shines directly into the eye. If too bright, this can be harmful.

Overall, the diffuse reflection from projectors creates a softer, less irritating light, making them more eye-friendly compared to direct light sources.

2. Larger Display Screen

3. Understanding Projector Specifications

Brightness: Choose a projector with at least 3000 lumens for clear visibility on a 100-inch screen. Low brightness can lead to visual fatigue.
Resolution: Full HD 1080p is adequate for most educational purposes involving simple images and text.
Contrast: A contrast ratio of 5,000:1 or higher ensures clear text and color differentiation.
Brightness Uniformity: Ideal uniformity is 80-100%, reflecting consistent brightness across the screen. The optical lens quality affects this.
Color Gamut: A wider color gamut enhances color saturation. Common specs include BT.709 (HD standard) and DCI-P3 (digital cinema standard).
Keystone Correction: To prevent image distortion, ensure the projection is perpendicular to the screen. Keystone correction can be optical or digital.
Zoom Options: Use optical zoom or short-throw projectors for larger images in smaller spaces, reducing eye strain.

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News Details

Company news about Projector - a green, healthy, eye-protecting display device for learning and life

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Projector - a green, healthy, eye-protecting display device for learning and life

Company news about-Projector - a green, healthy, eye-protecting display device for learning and life

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Cases

Projector - a green, healthy, eye-protecting display device for learning and life