Znse Biconcave lenses Custom CO2 laser focus Glass
Original price was: $24.00.$20.00Current price is: $20.00.
17% Off
Znse Bi-concave lenses have a negative focal length and consist of two concave surfaces of equal curvature
Material: USA CVD Znse
Application: Laser marking, engraving and cutting machine,etc
Diameter: 12/18 /19.05 /20mm
Focal length:1.5″(38.1mm) 2″(50.8mm) 2.5″(63.5mm) 3″(76.2mm) 4″(101.6mm) 5″(127mm)
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Price:by case
Model:Z-003
Size:custom,etc
Min.order Quantity: 1 pieces
Lead time:1-4 weeks or depends on order quantity
Description
Znse Biconcave lenses have a negative focal length and consist of two concave surfaces of equal curvature, which can disperse a parallel incident beam outward and are commonly used for beam spreading, collimation, projection and focal length expansion of
optical systems. Biconcave lenses disperse a collimated beam to an imaginary focal point and are commonly used in Galilean beam
expanders.
Specifications
Diameter Tolerance: +0/-0.13mm/+0.000” -0.005”
Thickness Tolerance: ±0.25mm/±0.010”
FL Tolerance: <±2%
Centration: <3 arc minutes
Clear Aperture >90%
Surface Figure <λ/2 per 1″[email protected]
Surface Quality 40-20 scratch and dig
AR/AR coating R<0.5% per surface @ 10.6um
2. ZnSe Singlet Positive Meniscus Lenses (wavelength 10.6um)
Specifications
Diameter Tolerance: +0/-0.13mm/+0.000” -0.005”
Thickness Tolerance: ±0.25mm/±0.010”
FL Tolerance <±2%
Centration <3 arc minutes
Clear Aperture >90%
Surface Figure <λ/2 per 1″[email protected]
Surface Quality 40-20 scratch and dig
AR/AR coating R<0.5% per surface @ 10.6um
Specification
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Diameter
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2-300mm
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Focal length
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15-5000mm
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Thicknesses
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0.12-60mm
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Dimension tolerance
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+0/-0.1mm
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Thickness tolerance
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±0.1mm
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Surface quality (scratch & dig)
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60-40, 40-20, or better
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Surface accuracy
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λ/2, λ/4 or better
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Parallelism
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3′ ,30”
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Bevel
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0.1~0.3mm x 45 degree
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Clear aperture
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>85%,>90%
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Coating
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AR coating or cutom
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Inspection:Each lens be tested before packing,a formal tested report will be provided.
Application of our lenses:avionics,astronomy,military,medical,scientifics,laser etc…
FAQ:
1. Are you manufacturure? can we see your factory?
Yes.
2. Do you have test report?
Yes, we offer full size test report, about size, focal length, flatness, coating curve, coating plate.
3.What is your production quantity everymonth?
It depands on the lens size and precison.
4.What is the Minimum quantity?
1pc
5.What is your delivery time?
samples: 10-20days
6.How should we do if the quality is not good?
Repair or return money.
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