L900C
Posted: Sun Nov 20, 2022 9:03 pm
With my Nikon optiphot epi-illuminator, I got a filter marked "L900C" in a box labeled "MBN12400". It looks like it's a diffuser only. What is it used for?
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Nikon lemon skin filter wrote:Use of the lemon skin filter is effective for low magnification photography
https://patents.google.com/patent/US20050226556 wrote:A typical lemon skin filter is an assembly of convex lenses with random, different and small focal distances. To reduce cost in practical applications, plate glasses are frosted by rough grinding and chemically etched to reduce scattering. This treatment gives the surface the appearance of lemon skin. The product is therefore not an assembly of convex lenses with uniform small focal distances (a micro-lens array) but a random, nonperiodic structure consisting of convex and concave lenses of random focal distances.
Apparently it is used for photography and diffuses, but still I wonder what is its application.Motic BA410 series manual wrote:The second disc is a minimum diffusion lemon skin filter that is used to eliminate the haze and inference colours caused by the high uniformity of the first filter.