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https://www.ecoptik.net/products/plano-concave-lens/

Plano Concave Lens
Plano concave lens bend parallel input rays so they diverge from one another on the output side of the lens and hence have a negative focal length. The spherical aberration of the plano concave lenses is negative and can be used to balance aberrations created by other lenses. Similar to the planar concave lens, plane concave lens, the curvature surface usually faces the largest object distance or the infinite conjugate to minimize spherical aberration.

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Description Of Plano Concave Lens
Ecoptik Plano concave lens bend parallel input rays so they diverge from one another on the output side of the lens and hence have a negative focal length. The spherical aberration of the plano concave lenses is negative

Specifications Of Plano Concave Lens
MaterialOptical glass/ Fused silica/ sapphire etc.
Diameter2mm~300mm
Diameter tolerance±0.05mm(≤50mm)
±0.1mm(＞50mm)
Focal length-50mm~-2000mm
Focal length tolerance±0.2%（＜10mm）
±0.5%（＜10mm-1000mm）
±1%（＜＞1000mm）
Edge Thickness2mm~20mm
Surface quality60/40， 40/20， 20/10
Surface accuracyλ/2~λ/10@632.8nm，532nm, etc.
Clear Aperture>85% dig diameter
Centration<3arc min~ 30arc sec
Chamfer<0.2mm×45°
CoatingAs per customer’s request

Type No.DiameterCenter ThicknessEdge ThicknessEffective Focal Length
(mm)(mm)(mm)(mm)
PCA-6622.9-10
PCA-7.87.85.316.3-12.7
PCA-8823-15
PCA-101023.2-20
PCA-12.7-A12.724.1-20
PCA-12.7-B12.723.4-30
PCA-12.7-C12.722.8-50
PCA-12.7-D12.722.3-100
PCA-151522.7-75
PCA-212124.7-40-
PCA-22.422.423.2-100
PCA-25.4-B25.427.2-35
PCA-25.4-C25.424.3-70
PCA-25.4-D25.424.1-75
PCA-25.4-E25.423.6-100
PCA-25.4-F25.423-150
PCA-25.4-G25.422.7-200
PCA-25.4-H25.422.5-300
PCA-25.4-I25.422.3-500
PCA-25.4-J25.422.2-1000
PCA-303024.8-80
PCA-38-A38311.3-50
PCA-38-B3836.6-100
PCA-38-C3834.8-200
PCA-38-D3834-350
PCA-38-E3833.7-500
PCA-38-F3833.5-700
PCA-50-A50511-100
PCA-50-B5059.7-125
PCA-50-C5034.2-500
PCA-50-D5033.8-800
PCA-50.8-A50.83.513-75
PCA-50.8-B50.8410.7-100
PCA-50.8-C50.848.3-150
PCA-75-A75514.6-150
PCA-75-B75512-200
PCA-100-A100618.85-200
PCA-100-B100616-250
PCA-100-C1006.214.45-300
PCA-100-D1008.214.32-400
PCA-100-E100812.87-500
PCA-100-F1009.613.64-600
PCA-125-A1254.217.3-300
PCA-125-B1255.615.24-400
PCA-125-C125613.64-500
PCA-125-D125915.34-600
PCA-125-E1258.413.82-700
PCA-125-F1259.614.34-800
PCA-150-A150519.03-400
PCA-150-B1506.217.29-500
PCA-150-C1507.516.68-600
PCA-150-D150916.83-700
PCA-150-E150814.84-800
PCA-200-A2006.5726.63-500
PCA-200-B2007.824.31-600
PCA-200-C2009.223.25-700
PCA-200-D20010.522.73-800
PCA-200-E20011.822.64-900
PCA-200-F20013.122.83-1000
PCA-250-A250628.2-700
PCA-250-B2506.926.18-800
PCA-250-C250825.05-900
PCA-250-D2509.528.45-1000
PCA-250-E2501225.87-1100
PCA-250-F2501527.69-1200
PCA-300-A3001032.17-1000
PCA-300-B3001230.35-1200
PCA-300-C3001429.67-1400
PCA-300-D3001629.67-1600

MaterialDiameterConcave Surface RadiusCenter ThicknessFocal Length
(mm) (mm) (mm) (mm)
H-K9L3-3.053-5.9
H-K9L5-51.685-100
H-K9L9-10.81.4-20.9
JGS110-13.812-30.1
Corning 797810-6.1112-13.3
H-K9L11-11.6951-22.65
H-K9L12-42.631.5-82.5
Coring797812-272-58.9
Corning 797812-18.1552-39.6
H-K9L12-13.41.4-26
HWB85012-8.33-16
H-ZF7LA12-92-11.2
JGS112.7-6003-300
JGS112.7-5003-250
JGS112.7-33.6243.4-16.8
H-ZK613-7.2383-12.4
H-LAF314-8.62-11.6
H-K9L15-36.074.2-69.8
HWB85017-18.421.5-34.4
H-K9L19-8.52-16.5
ZF619-9.6152-12.7
H-K9L20-15003-2902
H-K9L20-10003-1935
H-K9L20-8003-1548
H-K9L20-5003-967
JGS120-33.3324-72.7
JGS120-31.6883-69.1
H-ZF7LA20-23.551.4-28.9
B27021.9-14.124.1-27
H-K9L22-272-52.2
Silica22.5-904.3-45
ZF224-19.84.1-29.43
H-K9L25-51.683.5-100
JGS125-45.842.5-100
JGS125-22.922-50
JGS125-22.893-50
JGS125.4-1503-75
JGS125.4-232-50
Silica25.4-38.13.18-19
H-ZF328-13.96414-19.5
H-ZF7LA30-12.7061.2-15.6
ZK230.3-82.62-141.56
H-ZF7LA32-18.78.05-23.2
H-K9L33-1552.5-299.92
H-K9L42-51.872-100
JGS142-34.783-75.9
H-ZF7LA44.98-35.1492.5-43.7
JGS146-70.963-155
H-ZF7LA51.98-35.1492-43.7
H-ZF7LA52-44.33.485-55
H-K9L58-60010-1161
ZBaF558-39.172-58.37
H-ZF1199-116.833.5-167
H-K9L100-200012-1000

As a concave lens company, concave lens factory, we can offer sorts of related products for sale, if you have needs, please contact us.

Ecoptik (also known as BRD Optical) as one of the best optical components manufacturers was founded in 2004, and is located in the city of Changchun - the optic base of China with a beautiful view and profound optical culture. Ecoptik Co., Ltd. (also known as BRD Optical Co. Ltd.) has state-of-the-art, modern technology machines for manufacturing and inspecting all kinds of precision optics. Our company occupies an area of 2,000 square meters, supported by 120 workers.