OT: distance measurement through transparent material

Hello everyone,



as part of the automatic process, we need to non-contact measure the distance between a black glossy plastic with a pattern (imagine a black-gray chessboard) and a transparent plastic part with an accuracy of one tenth of a millimeter


Their distance is about five millimeters.
The measuring sensor can be in the range of a millimeter from the transparent part up to several tens of centimeters.

Does anyone have experience with a similar application and a specific type of sensor (preferably Keyence or Sick)?



thank you for any advice

Sorry no experience and they are not Keyence or Sick, apart from that I have stuck to the parameters of you question.


https://www.micro-epsilon.cz/measurement-systems/

I got an email from SICK about a sensor they have for detecting transparent material. Unfortunately I deleted it.

so for anyone intersted in the future, after some testing we decided to use confocal measurement from SICK