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Specifications
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Diameter
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φ4－φ300mm
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E.F.L.
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At the request of customers
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Wavelength(λ)
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At the request of customers
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Material
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BK7(K9) or as requested
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Clear Aperture
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>90%
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Bevel
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(0.25-1.0)mm× 45°(depends on the diameter)
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Diameter Tolerance
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+0.0/-(0.1-0.2)mm (depends on the diameter)
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Focal Length Tolerance
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±2%
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Centering Tolerance
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3’ or as requested
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Surface Figure
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λ/4 or as requested
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C.T. Tolerance
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±(0.1-0.25)mm (depends on the diameter)
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E.T. Tolerance
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Reference
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Coating
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At the request of customers
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We specialize in production of medium to large-size series of custom lenses with exacting tolerances, high-grade surface finish and difficult coatings. Please send us your specification or drawing and we will be happy to return a quotation ASAP. Our average response time is within 24 hours.
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