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Cylindrical Lenses
Cylindrical lenses are used to correct astigmatism in the eye and in rangefinders, to produce astigmatism, stretching a point of light into a line, they are widely used in bar code scanning, projection optics systems, laser measurement systems and holography.
Cylindrical lenses are available in either plano-concave or plano-convex configurations from UPT.
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LENSES
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MATERIALS
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ILLUSTRATION
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PROPERTIES AND APPLICATIONS
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CYLINDRICAL LENS
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BK7/ Fused Silica/CaF2 /other optical glass
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Used to provide focusing power in one section only. For illumination or detection of light from line sources. Also used for anamorphic compression of beams and images.
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Plano-Concave Cylindrical Lens
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Plano-Convex Cylindrical Lens
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Specification:
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General
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HIGH PRECISION
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Material
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Schott N-BK7, CDGM H-K9L, Fused silica, CaF2, Sapphire
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Design wavelength
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546.07nm
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Design index (bk7)
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1.51680 for BK7, 1.45846 for Fused Silica
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Diameter tolerance
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+0.0, 0.15mm
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+0.0, 0.05mm
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Paraxial focal length
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±2%
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±0.5%
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Centration
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<3'
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<1'
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Clear aperture
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80%
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90%
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Surface quality
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60-40 scratch and dig
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10-5 scratch and dig
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Surface irregularity
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< λ/4
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< λ/8
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Protective bevel
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0.25 + 0.25, -0.0mm
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0.2 ± 0.1mm
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Coating
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Uncoating ，AR or Single layer MgF2 coating upon request
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Note for Lens:
(1). Lens made from materials such as N-BK7, Fused Silica, Sapphire, CaF2, Borofloat, or other optical glass supplied by Schott and Chinese CDGM are available upon request.
(2). Custom-made Lens at any size from Φ3.0mm to Φ200mm clear aperture are available.Besides round, Lens at shape of square are available.
(3). 90% clear aperture is available upon request.
(4). Better bevel is available upon request.
(5). Windows with Anti-Reflective (AR), High-Reflective (HR), Partial-Reflective (PR) coating are available.
(2). Custom-made Lens at any size from Φ3.0mm to Φ200mm clear aperture are available.Besides round, Lens at shape of square are available.
(3). 90% clear aperture is available upon request.
(4). Better bevel is available upon request.
(5). Windows with Anti-Reflective (AR), High-Reflective (HR), Partial-Reflective (PR) coating are available.
