KPA-302 K9 Plano concave lens, Optical lens, Flat concave lens, dia:12.7mm, f:-19.0mm
Amazon.com Price: $28.50 (as of 12/27/2020 20:46 PST- Details)
Description
Lenses are coated products, please confirm the product’s parameters before buying. If there is no product quality issues, the sale is not refundable, please understand~
Material： K9
Diameter： 12.7mm
Deviation of Diameter： +0.0/-0.20
Aperture： >90%
Focal length(f’)： -19.0mm
Deviation of focal length(Df)： ±2%
Back focal length(fb)： -20.3
Thickness of center(Tc)： 2.0
Deviation of Thickness of center(DTc)： ±0.1
Thickness of edge(Te)： 4.3
Deviation of center： 3′
Diaphragm： 1~5
Local diaphragm： 0.2~0.5
Clearing： IV stand
Coating： MgF2 antireflection film
Weight： 1.0
Additional information
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