1064 nm Antireflection Coated N-BK7 Bi-Convex Lenses
1064 nm Antireflection Coated N-BK7 Bi-Convex Lenses
Our 1064 nm N-BK7 precision bi-convex (double-convex) lenses are polished to tight tolerances using master test plates to ensure minimum wavefront distortion for demanding laser focusing applications.
- 1064 nm anti-reflection coating
- High performance 40-20 scratch-dig N-BK7 substrates
- Double-Convex shape for focusing applications
- Standardized focal lengths across different lens sizes See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | KBX010AR.33 1064 nm N-BK7 Bi-Convex LensesBi-Convex Lens, N-BK7, 6.35 mm Diameter, 6.4 mm EFL, 1064nm | |||||
| KBX013AR.33 1064 nm N-BK7 Bi-Convex LensesBi-Convex Lens, N-BK7, 6.35 mm Diameter, 12.7 mm EFL, 1064nm | |||||
| KBX016AR.33 1064 nm N-BK7 Bi-Convex LensesN-BK7 Bi-Convex Lens, 6.35 mm Diameter, 19.0 mm EFL, 1064nm | Discontinued | ||||
| KBX019AR.33 1064 nm N-BK7 Bi-Convex LensesBi-Convex Lens, N-BK7, 6.35 mm Diameter, 25.4 mm EFL, 1064nm | |||||
 | KBX022AR.33 1064 nm N-BK7 Bi-Convex LensesBi-Convex Lens, N-BK7, 12.7 mm Diameter, 12.7 mm EFL, 1064nm | |||||
| KBX025AR.33 1064 nm N-BK7 Bi-Convex LensesBi-Convex Lens, N-BK7, 12.7 mm Diameter, 19.0 mm EFL, 1064nm | |||||
| KBX028AR.33 1064 nm N-BK7 Bi-Convex LensesBi-Convex Lens, N-BK7, 12.7 mm Diameter, 25.4 mm EFL, 1064nm | |||||
| KBX031AR.33 1064 nm N-BK7 Bi-Convex LensesBi-Convex Lens, N-BK7, 12.7 mm Diameter, 38.1 mm EFL, 1064nm | |||||
| KBX034AR.33 1064 nm N-BK7 Bi-Convex LensesBi-Convex Lens, N-BK7, 12.7 mm Diameter, 50.2 mm EFL, 1064nm | |||||
| KBX037AR.33 1064 nm N-BK7 Bi-Convex LensesBi-Convex Lens, N-BK7, 12.7 mm Diameter, 62.9 mm EFL, 1064nm | |||||
Mounting Options
We offer a full range of optical lens mounts to meet various experimental requirements. Below lists the recommended mounts for spherical lenses of standard sizes. Please see our Lens Mount Guide for additional information.
Note: besides the diameter, please check the Edge Thickness (Te) specification of the lens and the lens mount to ensure compatibility before purchasing.
| Lens Diameter |  A-Line™ Lens Mounts |
 LT Series Lens Tubes |
 LP Series Lens Positioners |
 Optics Cage Plus Series |
|---|---|---|---|---|
| 76.2 mm | (M-) LH-3A | N/A | N/A | N/A |
| 50.8 mm | (M-) LH-2A LH-2N |
LT20-05 LT20-10 LT20-20 LT20-30 |
LP-2A LP-2A-XY LP-2A-XYZ |
N/A |
| 38.1 mm | (M-) LH-1.5A | LT20 lens tube with LH-2R1.5 adapter |
LP-2 lens positioner with LPLH-1.5T adapter |
N/A |
| 25.4 mm | (M-) LH-1A LH-1N LH-1XY LH-1TZ-A LH-1TZ |
LT10-05 LT10-10 LT10-20 LT10-30 |
LP-1A LP-1A-XY LP-1A-XYZ |
OC1-LH1-S OC1-LH1 OC1-LH1-TZ OC1-LH1-XY OC1-LH1-XYA OC1-LH1-XYC OC1-LH1-XYZ |
| 12.7 mm | (M-) LH-0.5A LH-05N |
LT05-05 LT05-10 |
LP-05A LP-05A-XY LP-05A-XYZ |
N/A |
| 6.35 mm | LH-05DB with LH-50R25 adapter |
LT05 lens tube with LH-50R25 adapter |
LP-05 lens positioner with LPLH-25T adapter |
N/A |
For non-standard sizes not listed above, check out our variable size lens mounts.
Features
N-BK7 Substrates for VIS and NIR Applications
N-BK7 is an excellent lens material for most visible and near infrared applications. It is the most common borosilicate crown optical glass, and it provides great performance at a good value. Its high homogeneity, low bubble and inclusion content, and straightforward manufacturability make it a good choice for transmissive optics. N-BK7 is also relatively hard and shows good scratch resistance. The transmission range for BK 7 is 380 to 2100 nm. It is not recommended for temperature sensitive applications, such as precision mirrors. For more information, refer to our optical materials technical note.
Precision Double Convex Lens Surfaces
Our precision bi-convex lenses are polished to tight tolerances minimizing wavefront distortion. Tight surface quality tolerances minimize scatter and unwanted diffraction effects. These lenses have a 40-20 scratch-dig surface quality, and a λ/4 surface irregularity. For more information, refer to the optical surfaces technical note.
1064 nm Laser Line Antireflection V-Coating
Our AR.33 laser line V-coating offers the lowest reflectance at 1064 nm for maximum transmission while maintaining high durability and high damage resistance. Valuable laser energy is efficiently transmitted through the plano-convex lens rather than lost to surface reflection and scattering. The trade off to its superior performance is the minimal laser line wavelength range.
Standardized Bi-Convex Focal Lengths
Standard effective focal lengths on our double-convex lenses provide a systematic approach allowing for lenses of different sizes and materials to be interchanged without requiring other changes to your optical system.
Bi-Convex Lens Shape for Focusing
Bi-Convex lenses are the best choice when the object and image are at equal or near equal distance from the lens. When the object and image distance are equal (1:1 magnification), not only is spherical aberration minimized, but also coma, distortion, and chromatic aberration are identically canceled due to the symmetry. Bi-convex lenses function similarly to plano-convex lenses in that they have a positive focal length, and focus parallel rays of light to a point. Both surface are spherical and have the same radius of curvature, thereby minimizing spherical aberration. As a guideline, bi-convex lenses perform within minimum aberration at conjugate ratios between 5:1 and 1:5. Outside this magnification range, plano-convex lenses are usually more suitable.
