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ADAS Sensor & Camera Heating

Printed and transparent heater foils for radar covers, camera windows and selected sensor surfaces — engineered for de-icing, de-fogging and molded-cover integration where transmission, diagnostics and electrical architecture align.

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ADAS Sensor & Camera Heating

Challenge

Reliable perception starts at the sensor surface. ADAS sensors (radar, LiDAR, cameras) must deliver usable data in winter, tunnel and condensation scenarios. At SAE Level 2, a blocked sensor can often hand control back to the driver; at higher automation levels, sensor availability becomes a much stricter safety and system-availability requirement. Snow, ice, fogging and road slush on covers can reduce transmission and disable functions such as adaptive cruise control, collision avoidance or automated driving support. The engineering challenge is not only thermal: the heater design must also fit the diagnostic concept, allowed heater-circuit count, voltage level, cover geometry and radar or optical transmission requirements.

Our Solution

ATT develops printed and transparent heater foils for sensor surfaces where the application profile, electrical architecture and diagnostic concept support an integrated heating approach. Printed silver heaters can be attractive for camera and radar covers when the layout can meet radar attenuation and failure-detection requirements; transparent heaters on conductive substrates are used for LiDAR-related applications where metallic structures would interfere with optical transmission. The goal is a manufacturable functional layer that combines de-icing or de-fogging performance with process integration — for example via back-injection molding and existing decorative or functional film stacks.

How It Works

1

Design & Simulation

Custom heater layout designed using ATT's proprietary simulation tools, matched to sensor cover geometry, de-icing target, voltage level, diagnostic concept and transmission limits.

2

Printing & Processing

Silver ink screen-printed on transparent polycarbonate foils with controlled layer thickness, ensuring uniform heat distribution. For LiDAR applications, conductive transparent substrates are used.

3

Integration

Heater foils back-injection molded using your existing cover tooling — no additional assembly steps, no design changes to your production line.

4

Testing & Qualification

Thermal, optical/radar and environmental validation according to the project requirements — including thermal cycling, humidity exposure and OEM-specific test plans where applicable.

Variant 1 — Printed Silver Heaters

  • Process-integrated alternative to wire-based heaters where diagnostics and electrical architecture allow a printed layout
  • Transparent, back-injection moldable onto polycarbonate
  • Thermoformable for complex 3D geometries
  • Power density selectable

Variant 2 — Transparent Heaters for LiDAR

  • Based on conductive transparent substrates — no metallic structures
  • Optimized for LiDAR wavelengths (905 nm and 1550 nm) with > 90% transmittance
  • Silver heaters cannot be used for LiDAR — only transparent substrates provide the required light transmission
  • Back-injection moldable onto polycarbonate

Application Areas

Camera Covers

Front, rear and surround-view cameras for ADAS Level 2–5. Transparent heaters prevent fogging and icing without affecting image quality.

Radar Covers

76–77 GHz radar modules for adaptive cruise control and collision avoidance. Heater design optimized for < −0.5 dB signal attenuation.

LiDAR Windows

905 nm and 1550 nm LiDAR systems for 3D environment mapping. > 90% transmittance maintained across the entire operating spectrum.

Multi-Sensor Clusters

Integrated front-end modules combining camera, radar and LiDAR behind a single heated cover — the growing standard in modern EV platforms.

Outdoor Robotics & Drones

Selected radar-transparent or optical sensor surfaces for low-speed autonomous platforms, inspection drones, rescue equipment and outdoor systems exposed to ice, snow, fog or condensation.

Technical Data

Power Density Selectable
Min Thickness From 50 μm
Radar Attenuation < −0.5 dB (76–77 GHz)
Optical Transmittance > 90%
LiDAR Transmittance > 90%

Key Advantages

  • Proven technologies for serial production
  • Seamless back-injection molding integration — no assembly step
  • Early engineering support for heater-circuit count, failure detection, voltage level and transmission trade-offs
  • Transparent heaters on conductive substrates specifically for LiDAR
  • Transparent across visual, radar and LiDAR wavelengths
  • Proven supply chain: direct to Tier 1, or combined with injection molding partner to OEM
  • Compliant with automotive qualification standards
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Frequently Asked Questions

What types of ADAS sensors can be heated with ATT's foil heaters?
Our heater foils work with all common ADAS sensor types: cameras (visible and infrared), radar modules (76–77 GHz), and LiDAR units (905 nm and 1550 nm). The transparent heater design ensures minimal signal attenuation across all relevant wavelengths — below −0.5 dB for radar and above 90% transmittance for optical/LiDAR.
How fast can the heater de-ice a sensor cover?
De-icing time depends on the selected power density, ambient temperature, cover geometry, and integration design. Our simulation tools can accurately predict de-icing performance for your specific application.
Why is ADAS sensor heating more than a thermal design task?
The heater must preserve sensor transmission and fit the system architecture. For radar covers, the number of heater circuits, conductor width, voltage level, failure detection concept and allowed radar attenuation can be just as important as the required de-icing power. ATT supports this early trade-off before committing to a heater layout.
Does the heater affect radar or LiDAR sensor performance?
No. Our printed heaters are specifically designed for minimal signal interference. At 76–77 GHz, radar attenuation stays below −0.5 dB. For LiDAR at 905 nm and 1550 nm, optical transmittance exceeds 90%. These values meet the most stringent OEM specifications for ADAS sensor covers.
Can the heater foil be integrated into existing injection molding tools?
Yes. Our heater foils are designed for back-injection molding and can be integrated into existing production tooling with minimal or no modifications. The foil is placed in the mold before injection — no additional assembly step is needed. This dramatically simplifies production compared to wire-based solutions.
What is the difference between silver heaters and transparent heaters?
Silver heaters are screen-printed and ideally suited for camera and radar covers — offering a cost-effective replacement for wire-based solutions with uniform heat distribution. Transparent heaters are based on conductive substrates and are specifically designed for LiDAR applications, since metallic structures such as silver traces would interfere with laser transmission at 905 nm and 1550 nm.
Are heated sensor surfaces only relevant for passenger cars?
No. The same engineering problem — keeping a sensor surface available in ice, snow, fog or condensation — can also appear in outdoor robotics, drones, inspection platforms, security systems, rescue equipment and other low-speed autonomous or semi-autonomous systems. These applications may have different diagnostic and qualification requirements than automotive radar covers.
What automotive qualification standards do ATT heaters meet?
ATT heater foils are qualified according to the specific requirements of each OEM and Tier 1 customer. This typically includes thermal cycling (-40°C to +85°C or higher), humidity testing (85°C/85% RH), UV exposure, and mechanical stress tests. We work closely with your quality team to meet all project-specific requirements.

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