mirrors

ØФ

Ø- Ф Ø-Ф+2α Ø-Ф+4α Ø-Ф+6α

Dashed indicates a horizontal line

Ø+Ф-6α

α

Ø

Ф

Average angle under the mirror of the cantilever to the horizontal

Angle of the mounted mirrors relative to the horizontal

Angle of the incoming laser point