Sensitivity spectrum view cone of the Proximity sensor on the VL6180X chip

DomL4T · ‎2023-07-06

The position return aperture of VL6180X is extremely sensible to light at 630 nm (red). I would know the sensistivity spectrum of the position return of the proximity sensor on the chip VL6180X in order to use a filter to cut not too much the red light and do not alter the distance measurement. At 630 nm very weak red light blinds the proximity sensor and we need to use the ALS to monitor the red light.

If we know the sensitivity spectrum, and since need to use proximity sensor with the red light on, we can choice a filter with a cut-off that do not blindes the proximity sensor and can detect the red light with the ALS

Regards

Domenico

John E KVAM · ‎2023-07-12

the VL6180 uses a 850nm lidar. Actually it's spec'ed to be 845 to 865nm.

We added a filter over the top of the receiver that should narrow the light to attempt to eliminate as much ambient as we could.

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John E KVAM · ‎2023-07-12

the VL6180 uses a 850nm lidar. Actually it's spec'ed to be 845 to 865nm.

We added a filter over the top of the receiver that should narrow the light to attempt to eliminate as much ambient as we could.

Our community relies on fruitful exchanges and good quality content. You can thank and reward helpful and positive contributions by marking them as 'Accept as Solution'. When marking a solution, make sure it answers your original question or issue that you raised.

ST Employees that act as moderators have the right to accept the solution, judging by their expertise. This helps other community members identify useful discussions and refrain from raising the same question. If you notice any false behavior or abuse of the action, do not hesitate to 'Report Inappropriate Content'

DomL4T · ‎2023-07-13

Thank you for the answer, but we use a VL6180X.

The filter is present on this chip also?

Anne BIGOT · ‎2023-08-08

Yes it is

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