We refer to the coating requirements in the newly updated AN5231 Cover Glass Guidelines for Single-Zone Time-of-Flight Sensor.Section 4.3 states “Additional coatings are not recommended.” Section 5.2 states “IR ink can be used over exclusion areas.” Table 3 under Section 7 states “Adding ARC can improve transmittance.”There appears to be an inconsistency. How should we interpret this? Are ARC coatings and IR ink permitted? Per AN5231, Section 3.1 and 7 recommend an IR transmittance target of 87%, and Section 4.2 defines the minimum requirement as ≥85%. Could you advise if 85% transmittance meets compliance? Polycarbonate typically achieves ~85% IR transmittance and is included in the guideline’s recommended material list.If we apply ARC coating to boost transmittance, this brings us back to the first question.

Visitor II

Question

Cover Glass Coating for the single-zone Time‑of‑Flight sensor

We refer to the coating requirements in the newly updated AN5231 Cover Glass Guidelines for Single-Zone Time-of-Flight Sensor.Section 4.3 states “Additional coatings are not recommended.” Section 5.2 states “IR ink can be used over exclusion areas.” Table 3 under Section 7 states “Adding ARC can improve transmittance.”There appears to be an inconsistency. How should we interpret this? Are ARC coatings and IR ink permitted?
Per AN5231, Section 3.1 and 7 recommend an IR transmittance target of 87%, and Section 4.2 defines the minimum requirement as ≥85%. Could you advise if 85% transmittance meets compliance? Polycarbonate typically achieves ~85% IR transmittance and is included in the guideline’s recommended material list.If we apply ARC coating to boost transmittance, this brings us back to the first question.

ST Employee

Hi @Suzhen

This post has been escalated to the ST Online Support Team for additional assistance. We'll contact you directly.

Regards,

Billy