Design
Maximum screen size	35.6 cm (14")
Suitable for	Laptop
Type	Frameless display privacy filter
Features
Display filter features	Privacy
Aspect ratio	16:10
Limits viewing angle	30°
Light transmission	85%
Brand compatibility	Lenovo
Compatibility	X1 Carbon Gen9
Packaging data
Package width	385 mm
Package depth	250 mm
Package height	3 mm
Package weight	163 g

The Lenovo privacy filter 4XJ1U03944 is a frameless privacy filter for laptops, specifically designed for the ThinkPad X1 Carbon Gen9 model with a screen size of 35.6 cm (14 inch) and an aspect ratio of 16:10. It ensures privacy when working with sensitive data by limiting the visible screen angle to 30°. This prevents individuals outside this angle from viewing the screen content, which is advantageous in public or shared work environments.

Applications

The filter is primarily designed for use with laptops, particularly the Lenovo ThinkPad X1 Carbon Gen9. It is suitable for work environments where information confidentiality is important, such as offices, during travel, or in public spaces. The brand compatibility with Lenovo ensures optimal fit and functionality on specific devices.

Features and Equipment in Detail

The privacy filter offers a light transmittance of 85 %, meaning the display brightness is only slightly reduced, preserving image quality for the user within the direct viewing angle. The limitation of the viewing angle to 30° ensures that screen content is visible only to individuals within this angle, enhancing data security. The design is frameless, ensuring an optically clean and uninterrupted surface that seamlessly adapts to the laptop screen.

Technology Explained Simply

The filter’s technology is based on a special layering that directs light so it is only visible within a narrow angle. The light transmittance of 85 % is a technical value indicating the amount of light transmitted — the higher the value, the brighter the screen appears to the user. The limitation of the viewing angle to 30° is a function that ensures screen content cannot be seen by individuals outside this angle. This is particularly useful when sensitive information is displayed.

Compatibility and Accessories

The filter is specifically developed for the Lenovo ThinkPad X1 Carbon Gen9, which features a 16:10 aspect ratio and a screen size of 35.6 cm (14 inch). The brand compatibility with Lenovo ensures the filter is precisely tailored to the device.

Installation and Mounting

Installation is performed directly onto the laptop screen. As this is a frameless filter, it is mounted without additional frames or brackets.

Operational Advantages

Using the filter provides a high level of privacy without significantly impairing screen brightness. The light transmittance of 85 % ensures the screen remains easily readable for the user. The limitation of the viewing angle to 30° protects against unintended access to sensitive information. The frameless design ensures an aesthetically pleasing and functional integration into the laptop design.