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λ/4 N-BK7 Plano-convex Lenses

  • Wavelength range: 350-2200nm, Diameters: 0.5mm to 300mm
  • Standardized focal lengths and diameters convenient for OEM
  • Ideal for various applications in the visible to NIR region
  • Coating options: uncoated, V-coating, or broadband anti-reflection coating (BBAR)
  • Focal Lengths: Standard 20-1000mm, or custom
  • Applications: detectors, imaging instruments, lasers, fiber optics, etc.
Inquire for custom product  
Code Material Diameter CT ET Focal length Coating Unit Price Delivery Cart
1101-001 N-BK7 12.7 4.5 2.3 20mm Uncoated $13.5 2~3 Days
1101-002 N-BK7 12.7 4.5 2.3 20mm 400-700nm AR $21.0 1 week
1101-003 N-BK7 12.7 4.5 2.3 20mm 700-1100nm AR $21.0 1 week
1101-004 N-BK7 12.7 4.5 2.3 20mm 1100-1650nm AR $21.0 1 week
1101-005 N-BK7 12.7 3.5 2.1 30mm Uncoated $13.5 2~3 Days
1101-006 N-BK7 12.7 3.5 2.1 30mm 400-700nm AR $21.0 1 week
1101-007 N-BK7 12.7 3.5 2.1 30mm 700-1100nm AR $21.0 1 week
1101-008 N-BK7 12.7 3.5 2.1 30mm 1100-1650nm AR $21.0 1 week
1101-009 N-BK7 12.7 3.0 2.0 40mm Uncoated $13.5 2~3 Days
1101-010 N-BK7 12.7 3.0 2.0 40mm 400-700nm AR $21.0 1 week
1101-011 N-BK7 12.7 3.0 2.0 40mm 700-1100nm AR $21.0 1 week
1101-012 N-BK7 12.7 3.0 2.0 40mm 1100-1650nm AR $21.0 1 week
1101-013 N-BK7 12.7 3.0 2.2 50mm Uncoated $13.5 2~3 Days
1101-014 N-BK7 12.7 3.0 2.2 50mm 400-700nm AR $21.0 1 week
1101-015 N-BK7 12.7 3.0 2.2 50mm 700-1100nm AR $21.0 1 week
1101-016 N-BK7 12.7 3.0 2.2 50mm 1100-1650nm AR $21.0 1 week
1101-021 N-BK7 25.4 5.0 1.7 50mm Uncoated $15.0 2~3 Days
1101-022 N-BK7 25.4 5.0 1.7 50mm 400-700nm AR $21.0 1 week
1101-023 N-BK7 25.4 5.0 1.7 50mm 700-1100nm AR $21.0 1 week
1101-024 N-BK7 25.4 5.0 1.7 50mm 1100-1650nm AR $21.0 1 week
1101-025 N-BK7 25.4 4.0 1.9 75mm Uncoated $15.0 2~3 Days
1101-026 N-BK7 25.4 4.0 1.9 75mm 400-700nm AR $21.0 1 week
1101-027 N-BK7 25.4 4.0 1.9 75mm 700-1100nm AR $21.0 1 week
1101-028 N-BK7 25.4 4.0 1.9 75mm 1100-1650nm AR $21.0 1 week
1101-017 N-BK7 12.7 3.0 2.6 100mm Uncoated $13.5 2~3 Days
1101-018 N-BK7 12.7 3.0 2.6 100mm 400-700nm AR $21.0 1 week
1101-019 N-BK7 12.7 3.0 2.6 100mm 700-1100nm AR $21.0 1 week
1101-020 N-BK7 12.7 3.0 2.6 100mm 1100-1650nm AR $21.0 1 week
1101-029 N-BK7 25.4 3.5 1.9 100mm Uncoated $15.0 2~3 Days
1101-030 N-BK7 25.4 3.5 1.9 100mm 400-700nm AR $21.0 1 week
1101-031 N-BK7 25.4 3.5 1.9 100mm 700-1100nm AR $21.0 1 week
1101-032 N-BK7 25.4 3.5 1.9 100mm 1100-1650nm AR $21.0 1 week
1101-033 N-BK7 25.4 3.2 1.9 125mm Uncoated $15.0 2~3 Days
1101-034 N-BK7 25.4 3.2 1.9 125mm 400-700nm AR $21.0 1 week
1101-035 N-BK7 25.4 3.2 1.9 125mm 700-1100nm AR $21.0 1 week
1101-036 N-BK7 25.4 3.2 1.9 125mm 1100-1650nm AR $21.0 1 week
1101-037 N-BK7 25.4 3.0 2.0 150mm Uncoated $15.0 2~3 Days
1101-038 N-BK7 25.4 3.0 2.0 150mm 400-700nm AR $21.0 1 week
1101-039 N-BK7 25.4 3.0 2.0 150mm 700-1100nm AR $21.0 1 week
1101-040 N-BK7 25.4 3.0 2.0 150mm 1100-1650nm AR $21.0 1 week
1101-041 N-BK7 25.4 3.0 2.2 200mm Uncoated $15.0 2~3 Days
1101-042 N-BK7 25.4 3.0 2.2 200mm 400-700nm AR $21.0 1 week
1101-043 N-BK7 25.4 3.0 2.2 200mm 700-1100nm AR $21.0 1 week
1101-044 N-BK7 25.4 3.0 2.2 200mm 1100-1650nm AR $21.0 1 week
1101-045 N-BK7 25.4 3.0 2.5 300mm Uncoated $15.0 2~3 Days
1101-046 N-BK7 25.4 3.0 2.5 300mm 400-700nm AR $21.0 1 week
1101-047 N-BK7 25.4 3.0 2.5 300mm 700-1100nm AR $21.0 1 week
1101-048 N-BK7 25.4 3.0 2.5 300mm 1100-1650nm AR $21.0 1 week
1101-049 N-BK7 25.4 3.0 2.6 400mm Uncoated $15.0 2~3 Days
1101-050 N-BK7 25.4 3.0 2.6 400mm 400-700nm AR $21.0 1 week
1101-051 N-BK7 25.4 3.0 2.6 400mm 700-1100nm AR $21.0 1 week
1101-052 N-BK7 25.4 3.0 2.6 400mm 1100-1650nm AR $21.0 1 week
1101-053 N-BK7 25.4 3.0 2.7 500mm Uncoated $15.0 2~3 Days
1101-054 N-BK7 25.4 3.0 2.7 500mm 400-700nm AR $21.0 1 week
1101-055 N-BK7 25.4 3.0 2.7 500mm 700-1100nm AR $21.0 1 week
1101-056 N-BK7 25.4 3.0 2.7 500mm 1100-1650nm AR $21.0 1 week
1101-057 N-BK7 25.4 3.0 2.8 750mm Uncoated $15.0 2~3 Days
1101-058 N-BK7 25.4 3.0 2.8 750mm 400-700nm AR $21.0 1 week
1101-059 N-BK7 25.4 3.0 2.8 750mm 700-1100nm AR $21.0 1 week
1101-060 N-BK7 25.4 3.0 2.8 750mm 1100-1650nm AR $21.0 1 week
1101-061 N-BK7 25.4 3.0 2.8 1000mm Uncoated $15.0 2~3 Days
1101-062 N-BK7 25.4 3.0 2.8 1000mm 400-700nm AR $21.0 1 week
1101-063 N-BK7 25.4 3.0 2.8 1000mm 700-1100nm AR $21.0 1 week
1101-064 N-BK7 25.4 3.0 2.8 1000mm 1100-1650nm AR $21.0 1 week
Plano-convex (PCX) lens is an optical lens with one plane face and one convex face, and a positive focal length, utilized for collecting, focusing parallel light beams, or collimating lights from a point source. N-BK7 glass is a RoHS compliant borosilicate material prevalent for uses in the visible and NIR spectrum (in particular when it comes to manufacturing precision visible components). NBK7 features high optical homogeneities, great resistance to scratches and injuring, and low inclusion content, it is an ideal substitute for UV Fused Silica when high UV transmission is not required, and a preferred alternative for CaF2 at the 1.65-2.3 micro operating wavelength region in the concern of lower manufacturing costs. Compared to Biconvex lenses,  Plano-convex lenses have two unidentical sides and therefore work best for an infinite conjugate ratio (objective distance: image distance). However, plano-convex lenses still reduce spherical aberrations to a quite low extent when the absolute conjugate ratio is greater than 5:1. For conjugate ratio below 5:1, consider using plano-convex lenses in pairs or a biconvex lens.

Hangzhou Shalom EO offers Stocked and Custom NBK7 Plano-convex Lenses with a diameter range of 0.5-300mm, that are competent for various incorporation into emitters, detectors, and imaging instruments, lasers, fiber optics, etc. The focal lengths of the stocked N-BK7 plano-convex lens range from 20-1000mm, while other focal lengths could be customized. These lenses feature lambda/4 irregularities and 40/20 scratch/dig. Each piece of the lens will undergo strict inspection in Shalom EO’s in-house labs before dispatch, to assure tight tolerance and secure your interest.

Note that the transmission range of NBK7 is 350-2200mm, with an absorption dip positioned at approximately 2.8 mirco.  To further enhance the transmission of the NBK7 plano convex lens, Broadband Anti-reflection (BBAR) coatings could be furnished to accommodate the requirements for multi-wavelength and tunable lasers. V coatings, which are a special form of AR coatings that deliver an ultra-low reflection at a narrow band of designed wavelengths are available, too. These coating lenses are in particular advantageous for elevating the efficiencies of complex optical instruments. Besides, Uncoated NBK7 plano-convex lenses are also accessible in Shalom EO.

Application Notes:
1. To minimize spherical aberration, engineers from Shalom EO suggest that collimated light beams should be projected to the curved side of the lens for focusing.
2. Simplified Calculation of Focal Length of a Plano Convex Lens: focal length = R/(n-1), where R is the radius of curvature and n is the refractive index.

Specifications:

Lens Form Plano-convex Lens Material N-BK7
Diameters(mm) 0.5-300mm Working Wavelength Range(nm) 350-2200mm
Coating Uncoated/BBAR/V-coating Surface Quality (S/D) 40/20
Irregularity@632.8nm λ/4 Centering Error ≤2 arc min
Clear Aperture 90% Protective Chamfer 0.2mmx45°


D25.4mm F75mm N-BK7 Plano Convex Lens with 700-1100nm AR coating

D25.4mm F75mm N-BK7 Plano Convex Lens with 700-1100nm AR coating

D25.4mm F50mm N-BK7 Plano Convex Lens with 1100-1650nm AR coating

D25.4mm F50mm N-BK7 Plano Convex Lens with 1100-1650nm AR coating

D25.4mm F125mm N-BK7 Plano Convex Lenses Uncoated

D25.4mm F125mm N-BK7 Plano Convex Lenses Uncoated