Chronos 1.4 IR Filter Dimension Size Confusion?

[B.H.V]

Hi all, I'm seeing different dimensions for the IR filter size (See below links). Some documentation shows it as 15mm X 15mm, another shows it at 18mm X 18mm and 24mm X 16mm. What would the filter size be for a Chronos 1.4 received in 2018?

https://www.krontech.ca/wp-content/uploads/2020/01/IR-Filter-.pdf

https://www.krontech.ca/wp-content/uploads/2019/03/FM-ENGR-50001-Chronos-1.4-Datasheet-Rv4-1.pdf

https://www.krontech.ca/wp-content/uploads/2021/09/FM-ENGR-50001-Chronos-1.4-Datasheet-Rev5.pdf

[paulsmith6193]

yes the answer you have writes is perfectly fine

[B.H.V]

yes the answer you have writes is perfectly fine

Not really, because this shows the 2019 revision has it at 18mm and 18mm but the 2020 revision as 15mm X 15mm which would not make sense.

[Rob_G]

Hello B.H.V.

You are right there are three different size for the IR filters
1.4 Chronos Cameras produced up to 07/16/2020, S/N 01836 or lower, have an IR filter of size 15 mm by 15 mm.

[B.H.V]

Thanks ROB!