DIA25.4mm BK7 PLANO-CONCAVE LENSES AR@400-750nm

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OPTICS / LENSES / Spherical Plano Concave Lenses / DIA25.4mm BK7 Plano-Concave Lenses AR@400-750nm

BK7 features High Transmission (BK7 offers high linear optical transmission across the visible spectrum, approx. 380 nm to 700 nm) and Low Dispersion (BK7 has a relatively high Abbe number, around 64.17). These BK7 Optical Glass Lenses of Plano-Concave Design are AR Coated at 400-750nm.

AR coatings are thin-film structures applied to optical surfaces to reduce reflections and increase transmission. They typically consist of one or more layers of dielectric materials with specific refractive indices and thicknesses. The primary principle behind their operation is optical interference.

Without an AR coating, around 4% of light is reflected at each air-to-glass surface of a BK7 lens due to Fresnel reflections. This loss can accumulate in systems with multiple optical elements, reducing overall light throughput and potentially causing ghost images or stray light.

POL-BK7-PCV-A-25.4 SERIES

plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-25mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-25

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature: -12.9mm (+/-1%)
  • Centre Thickness: 2.2mm (+/-0.1mm)
    Edge Thickness: 8.3mm (+/-0.1mm)
  • Effective Focal Length(EFL): -25mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR/AR coated at 400-750nm,double surface, R<0.5% max
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 1pc
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-35mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-35

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature 18.0mm (+/-1%)
  • Centre Thickness: 2.2mm (+/-0.1mm)
    Edge Thickness: 7.0mm (+/-0.1mm)
  • Effective Focal Length(EFL): -35mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR/AR coated at 400-750nm,double surface, R<0.5% max
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 7pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-50mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-50

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -25.8mm (+/-1%)
  • Centre Thickness: 1.9mm (+/-0.1mm)
    Edge Thickness: 5.1mm (+/-0.1mm)
  • Effective Focal Length(EFL): -50mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR/AR coated at 400-750nm,double surface, R<0.5% max
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 8pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-75mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-75

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -38.6mm (+/-1%)
  • Centre Thickness: 2.0mm (+/-0.1mm)
    Edge Thickness: 4.2mm (+/-0.1mm)
  • Effective Focal Length(EFL): -75mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR/AR coated at 400-750nm,double surface, R<0.5% max
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 8pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-100mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-100

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -51.5mm (+/-1%)
  • Centre Thickness: 2.2mm (+/-0.1mm)
    Edge Thickness: 3.8mm (+/-0.1mm)
  • Effective Focal Length(EFL): -100mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR/AR coated at 400-750nm,double surface, R<0.5% max
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 8pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-125mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-125

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -64.4mm (+/-1%)
  • Centre Thickness: 2.2mm (+/-0.1mm)
    Edge Thickness: 3.4mm (+/-0.1mm)
  • Effective Focal Length(EFL): -125mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR/AR coated at 400-750nm,double surface, R<0.5% max
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 8pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-150mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-150

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -77.3mm (+/-1%)
  • Centre Thickness: 2.1mm (+/-0.1mm)
    Edge Thickness: 3.1mm (+/-0.1mm)
  • Effective Focal Length(EFL): -150mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR/AR coated at 400-750nm,double surface, R<0.5% max
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 8pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-175mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-175

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -90.1mm (+/-1%)
  • Centre Thickness: 2.1mm (+/-0.1mm)
    Edge Thickness: 2.9mm (+/-0.1mm)
  • Effective Focal Length(EFL): -175mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR/AR coated at 400-750nm,double surface, R<0.5% max
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 8pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-200mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-200

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -103.0mm (+/-1%)
  • Centre Thickness: 2.2mm (+/-0.1mm)
    Edge Thickness: 3.0mm (+/-0.1mm)
  • Effective Focal Length(EFL): -200mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR/AR coated at 400-750nm,double surface, R<0.5% max
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 7pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-250mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-250

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -128.8mm (+/-1%)
  • Centre Thickness: 2.2mm (+/-0.1mm)
    Edge Thickness: Te=2.7,+/-0.1mm
  • Effective Focal Length(EFL): -250mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR coated at 400-750nm (R<0.5% max), both surfaces (0-deg AOI designed)
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 7pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-300mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-300

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature: -154.5mm (+/-1%)
  • Centre Thickness(CT): 2.0mm (+/-0.1mm)
    Edge Thickness(ET): 2.5mm (+/-0.1mm)
  • Effective Focal Length: EFL -300mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR coated at 400-750nm(R<0.5% max), both surfaces (0-deg AOI designed)
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 7pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-400mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-400

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -206.0mm (+/-1%)
  • Centre Thickness: 2.1mm (+/-0.1mm)
    Edge Thickness: Te=2.4,+/-0.1mm
  • Effective Focal Length: EFL -400mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR coated at 400-750nm (R<0.5% max), both surfaces (0-deg AOI designed)
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 7pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-500mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-500

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -257.5mm (+/-1%)
  • Centre Thickness: 2.1mm (+/-0.1mm)
    Edge Thickness: Te=2.4,+/-0.1mm
  • Effective Focal Length: EFL -500mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR coated at 400-750nm (R<0.5% max), both surfaces (0-deg AOI designed)
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 7pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-750mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-750

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -386.3mm (+/-1%)
  • Centre Thickness: 1.92mm (+/-0.1mm)
    Edge Thickness: Te=2.1,+/-0.1mm
  • Effective Focal Length: EFL -750mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR coated at 400-750nm (R<0.5% max), both surfaces (0-deg AOI designed)
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 7pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)
plano-concave-lens-bk7-anti reflection coated

D25.4mm BK7 Plano-Concave Lens f-1000mm (400-750nm)

P/N: POL-BK7-PCV-A-25.4-1000

General Specifications
  • Substrate Material: BK7 optical glass
    Wavelength Range: 350nm – 2.0um
    Design Wavelength: 633nm (n=1.515082), plano-concave
  • Outer Diameter: 25.4,+0.0/-0.1mm
  • Surface Radius of Curvature -515mm (+/-1%)
  • Centre Thickness: 2.1mm (+/-0.1mm)
    Edge Thickness: Te=2.0,+/-0.1mm
  • Effective Focal Length: EFL -1000mm (+/-1%)
  • Centration: < = 3 arc min
  • Coating: AR coated at 400-750nm (R<0.5% max), both surfaces (0-deg AOI designed)
Pricing Overview (Excl. Taxes and Fees)
Stock Availability
  • Local Singapore Warehouse: 7pcs
  • New Batch Process Leadtime: Approx. 3-4weeks; EXW-SIN (T&C Apply)