glass perfectiongold coated mirrorsachromatic lensbeam splittersuv quartz discsachromatic lens
Glass Perfection UK – Optical Glass Manufacturers

Glass Perfection is a UK Company which manufactures Optical Windows, Filters and Components for production, custom fabrication or from stock.

Specialising in polished plano windows in a wide range of materials with over 20 years manufacturing experience, we offer low cost volume production.

gold coated mirrors
concave lens
optical coatings
achromatic lens
Beam Splitters
silver coatings
scientific optical manufacturers
plano concave lenses
concave lenses
Lenses > Plano Concave

Plano-concave lenses have one flat side and one inward curved face and negative focal lentgth. They are used for image reduction or to spread light.

plano concave lens

o: diameter
tc: centre thickness
te: edge thickness
P: principal point
f: focal length
fb: back focal point
fp: focal Point


Diameter Tolerence: +0mm - 0.25mm
Edge/Centre Thickness Tolerence: +/- 0.25mm
Edge Finish: fine ground, beveled
Clear Aperture Diameter: 80% of central diameter
Surface Figure: ^/4 @ 632.8 nm
Surface Quality: 60-40 scratch and dig
Bevel: 0.25mm x 45 degree
Focal Length Tolerence: +/-2%
Back Focal Lenght Tolerence +/-2%


BKY grade A optical glass - n=1.5183+/-0.0005n (@546.1nm)
High purity uv grade fused silica - n=1.4608+/-0.0005 (@546.1nm)

Anti-reflection Coating Available.

To improve transmittace we can supply your lenses coated with a single layer (broad band) or multi layer (narrow band) anti-reflection coating on both sides.

silver coatings Plano Convex Lenses
glass perfection Double Convex Lenses
glass perfection Plano Concave Lenses
beam splitters Double Concave Lenses
achromatic lens Meniscus Lenses
beam splitters Achromatic Lenses
optical coatings Cyndrical Lenses
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