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Distance,
mm
Thickness,
mm
Material
Comment
Aperture
(Dia)
,
mm
R
(curve)
,
mm
κ
α
1
(r
2
)
α
2
(r
4
)
α
3
(r
6
)
α
4
(r
8
)
+
Image height/2,
mm
N
color
Draw rays
Chief rays width,
mm
Marginal ray angle,
°
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