All-Glass Automotive Lenses: Advantages, Disadvantages & Application Scope

Core Advantages

1. Nearly zero thermal drift (the biggest core strength)

   Under vehicle extreme temperature range of -40℃ ~ +105℃, all-glass groups have negligible thermal expansion and contraction, no focal shift, no out-of-focus blur caused by high temperature or low temperature. Fully meet the strict zero-drift requirement of ADAS forward vision algorithm.

   
   
2. Extreme high temperature resistance & long service life

   No aging deformation after long-term working under engine compartment high temperature, excellent anti-fatigue performance, perfectly comply with IATF16949 full vehicle life cycle reliability standards.

   
   
3. Higher MTF resolution & superior optical performance

   Higher light transmittance, sharper long-distance object imaging, stronger backlight suppression, anti-glare and anti-flare ability. Excellent performance when facing strong sunlight, tunnel light switching and oncoming high beams.

   
   
4. Outstanding vibration & long-term stability

   After long-term road bumping, vibration aging and temperature cycle alternating tests, optical parameters remain highly consistent, no gradual defocus problem during vehicle service period.

   
   
5. Good spectrum stability

   Stable cooperation with IR-CUT filter, no color cast or infrared leakage, consistent day & night imaging effect.

Disadvantages

1. Heavier overall weight than G+P hybrid lenses, increasing module load.
2. Higher unit cost, obvious BOM pressure for large-scale mass-produced economical models.
3. Longer total optical length, larger camera module volume, difficult to arrange in narrow hidden installation positions inside the cabin.
4. Complex processing technology: glass grinding, polishing and vacuum coating have lower production yield, longer sample development cycle.

Standard Application Scenarios

1. Front ADAS high-precision forward vision main lens (ACC, LKA, AEB, traffic sign recognition, pedestrian collision warning)
2. Flagship high-end vehicle top configuration AVM 360° surround view system
3. Heavy trucks, buses, engineering machinery, mining vehicles and other harsh working condition commercial vehicles
4. Projects with mandatory requirements for long-term full-life reliability and zero thermal drift
5. First-class Tier 1 designated high-standard vehicle vision modules

Scenarios Not Recommended