04 NX 025 High-index Planoconcave Laser Lens
Description
Lenses in high-index glass (n = 1.785) have only 55% of the spherical aberration of equivalent BK7 lenses, and can be very efficiently AR coated with a single-layer coating. Beam expanders etc. can therefore be made with near diffraction-limited performance and very high transmittance and suitable for high powers, having no cemented interfaces. These AR-coated negative lenses complement the positive lenses in the PX range, with which they may be combined to form Galilean beam-expanders (TE range). The high index reduces spherical aberration and allows use of an efficient and economical single-layer AR coating.
04 NX 025 High-index Planoconcave Laser Lens
Specifications |
|
|---|---|
| Material: | BK7 |
| Diameter: | 2.5 mm |
| Focal Length: | 4.0 mm |
| Edge Thickness, Te: | 1.0 mm |
| Lens Type: | Plano-Concave |
Applications
For pricing, technical or any other questions please contact the supplier
- No registration required
- No markups, no fees
- Direct contact with supplier
Contact Supplier
How to order?
-
Ships from:
United Kingdom
-
Sold by:
-
On FindLight:
External Vendor
Claim COMAR Optics Page to edit and add data
Frequently Asked Questions
The refractive index of the high-index planoconcave laser lens is 1.785.
Lenses made of high-index glass have only 55% of the spherical aberration of equivalent BK7 lenses, reducing spherical aberration and allowing for near diffraction-limited performance.
Yes, the lens can be very efficiently AR coated with a single-layer coating.
The lens is suitable for a range of applications including metrology, vision, OEM, and laser optics.
The scratch-dig specification for the lens is 40-20.