S-LEC™ Wedge-shaped interlayer for windshield controls light refraction for clear images for HUD.
Head-up Display
Head up – Eyes Forward

HUD solution with S-LEC™ Wedge Shaped Film

Standard windshields cause projector images to appear as blurry, double images due to the refraction of light, reducing visibility. However, windshields with S-LEC™ Wedge Shaped Film enables real time images to be projected clearly by controlling light refraction.

Compatible with all HUDs

S-LEC™ Wedge Shaped Film responds to the diversification of HUD.

  • AR-HUD
  • Dual-plane HUD
  • Vehicle Body Types
Extermination reality head-up display (AR-HUD) that displays driving information on a windshield
AR-HUD
(Augmented Reality HUD)

The precise control of refractions of light over the full projection area is required. S-LEC™ Wedge Shaped Film is compatible with the wide view of AR-HUD.

Dula-plane HUD that can display the information required for driving into two screens
Dual-plane HUD

Dual-plane HUD projects information in two tiers, upper and lower, using different focal distance and a complex wedge-shaped interlayer film design is needed. S-LEC™ Wedge Shaped Film is compatible with the complex design.

S-LEC™ wedge-shaped interlayer that enables clear HUD images even in a variety of body types
Vehicle Body Types

The required angle to control light refraction in the windshield may differ by vehicle body type, such as sedan, sports car, SUV and minivan. With S-LEC™ Wedge Shaped Film, the wedge angle can be customized according to the shape and design of the glass, enabling the projection of clear HUD images.

Wedge Angle Control

S-LEC™ Wedge-shaped Interlayer that controls the wedge angle according to the windshield angle

Different windshields require different angles of glass for Head-up Display(HUD), which is why we use a wedge-shaped film.

For example, different vehicle body types require different wedge angles, and S-LEC™ Wedge Shaped Film can customize the wedge angle according to the windshield mounting angle and design, enabling clear images to be displayed on various body types.

The angle of this wedge can be controlled, ensuring that drivers can enjoy the benefits of our film with clear vision.

Protect the HUD unit from the sunlight

Solutions to protect HUD units from sunlight

The HUD unit is exposed to loads of sunlight. In recent years, augmented reality head-up displays (AR-HUD) that project large screens have attracted attention. The HUD unit is getting bigger to project more information over a wider area, and there is concern about damage to the HUD unit due to heat collection from sunlight.

S-LEC™ Wedge Shaped Film with solar control function reduce the effect of sunlight and the load on the HUD unit. Laboratory tests conducted by SEKISUI S-LEC and its partners have confirmed that S-LEC™ Wedge Shaped Film with solar control function reduces the temperature rise on TFT in the HUD unit by 7°C compared to a standard windshield.

Global head-up display consumer research

Survey implementation by SEKISUI S-LEC

Different windshields require different angles of glass for Head-up Display(HUD), which is why we use a wedge-shaped film.

SEKISUI S-LEC surveys have shown that experiencing Head-up Display(HUD) features in a test drive vehicle at a dealer has a major impact on their later choice of adding a HUD when people are considering purchasing. We believe that installing HUD in test drive vehicles and actively creating opportunities for people to experience their features will become effective measures for making HUD more popular in the future and expanding the market.

Direct and combiner types

There are two types of head-up displays, direct type and combiner type

There are two types of head-up display systems in the market: direct type and combiner type.

Direct type is a HUD system that projects images directly onto the windshield. It is superior because the driver can catch information without moving the driver’s eyes.

Combiner type displays information on a small, translucent panel called a combiner, which requires the driver to lower their line of sight to the frame of the combiner installed on the dashboard. In general, the distance from the driver’s eyes to the display screen is shorter, and the display screen is smaller than the direct type.

Combinations with Head-Up Display

We offer the following combinations of multiple functions into one film:

  • Sound Acoustic
  • Solar Control
A child sleeps deeply in a car, thanks to sound insulation glass reducing outside noise and enhancing comfort.
Sound Acoustic for laminated glass Sound Acoustic

S-LEC™ Sound Acoustic Film reduces the transmission of exterior noises for the highest level of luxury and comfort on the market.

A woman near the glass that transmits the visible light and blocks near-infrared rays and UV lights
Solar Control Performance for laminated glass Solar Control

Leave discomfort at the curb. S-LEC™ Solar Control Film with fine particle dispersion technologies enables comfortable and efficient vehicle designs for passengers.