Pressure marks
Softer is not better: too soft spreads the load into a broad red patch, too hard concentrates it into two points. The fix is contact area matched to hardness, so pressure per unit area drops.
Silicone nose pads for AI glasses
Smart glasses are heavier than spectacles, they warm up, and they are worn for hours — which makes the nose pad the part most likely to be complained about: pressure marks, sliding, tackiness in summer, yellowing after a few months. This page covers material, shape and how small-batch sampling runs.
Three real problems
The pad does not succeed or fail on softness
Sliding down
Once frame weight goes up, insufficient friction between pad and nose lets it slide. Textured surfaces, micro-suction geometry or dual hardness work better than simply going harder.
Yellowing and tackiness
Sweat, sebum and sunscreen over months, plus UV, discolour and soften some compounds. It is a material-system question and should be settled at specification, not after complaint.
Specification
Five parameters that decide a full day of wear
Values are confirmed against the frame structure and wearing trials; we do not assume a universal size. Physical samples are welcome for comparison.
| Parameter | What it drives | How it is fixed |
|---|---|---|
| Hardness | Balance between pressure marks and support | Wearing trial at the real device weight |
| Contact geometry | Pressure distribution and slip | Curved contact matched to the nose bridge; mirrored left and right if needed |
| Surface finish | Friction, skin feel, soil resistance | Texture, silk finish or local grip areas, by product positioning |
| Assembly | Replaceability and assembly time | Snap, plug-in or overmoulded, following the service strategy |
| Material and compliance | Skin contact, odour, extractables | Assessed as skin-contact grade; reports confirmed per project |
Sampling and volume
The advantage of a small part: cheap to change, fast to iterate
A nose pad is small, so tooling investment is comparatively low — several rounds of wearing tests before the design freezes are normal, and colour or surface changes can iterate on the same tool. Volume runs are inspected against the sealed sample, with colour and hardness samples retained per batch. Private-label buyers can have in-mould marking and individual packaging; details are in sampling and tooling rules and confidentiality and NDA.
Have a frame structure or wearing feedback?
Send the frame dimensions, device weight and the current pressure or slip problem; we will start with material and geometry.