Thumbnail of LAQ0805 - Precision grade aspheric lenses AR coated photo 1

Description

Traditionally lens surfaces have been sections of a sphere. For many applications this leaves spherical aberration as the dominant defect of any image so created.   Aspheric lenses are used to correct these image defects.  One solution to this is to have one or both surfaces, departing from the spherical shape. Aspheric lenses can be very effective, focusing or collimating laser beams.  Aspheric lenses are polished to a good surface finish but the surface is not spherical and shaped to reduce the aberrations from a single on axis point.

These precision grade aspheric lenses will provide excellent performance over the visible spectrum and NIR applications. The glass aspheric lenses are coated with a single-layer AR coating on high index flint glass achieving high transmission of 98% at the stated wavelength (Typical V coating designed for 550nm).

LAQ0805 - Precision grade aspheric lenses AR coated

Visit the Knight Optical (UK) Ltd Store

Specifications

Diameter: 6.51 mm
Material: H-LAK54
Effective Focal Length: 7.5 mm
Numerical Aperture (NA): 0.3
Wavelength Range: 350 – 2000 nm

Got questions about specs? Use the inquiry form to ask.

Document icon Download Data Sheet Download icon

Features

  • Mounting options.
  • Stock lenses can be edged to smaller diameters.
  • Special AR coatings available on stock lenses.

Applications

Precision aspherical lenses are used in applications such as beam focusing/collimation and Imaging.

Frequently Asked Questions

How do aspheric lenses differ from traditional spherical lenses?
Traditional spherical lenses cannot collimate light effectively because even small angles of incidence can produce spherical aberrations. Aspheric lenses have a non-spherical surface that allows them to effectively focus or collimate even highly divergent emissions, potentially replacing a multi-lens system with a single aspheric lens.
What are the custom capabilities for aspheric lenses?
Custom aspheric lenses can be made in a range of sizes as small as 2mm diameter up to 100mm or greater. They can have a focal length of 3mm to 1000mm or greater, centration of < 3 arcseconds, surface figure of < 0.1 fringes, and scratch/dig of < 10/5. They may also be AR coated for UV/VIS/NIR.
How are Knight Optical's aspheric lenses tested and checked before dispatch?
All products are tested in Knight Optical's state of the art metrology laboratory by highly trained technicians to ensure compliance with the specification. Parts are then sent to the QA team to be cleaned and checked for surface imperfections before dispatch.
What are the benefits of using precision grade aspheric lenses?
Precision grade aspheric lenses provide excellent performance over the visible spectrum and NIR applications. They are coated with a single-layer AR coating on high index flint glass achieving high transmission of 98% at the stated wavelength.
What are aspheric lenses used for?
Aspheric lenses are used to correct spherical aberration in lasers and imaging.

Got more questions? Use the inquiry form to ask the supplier directly.

Similar Products

Request Quote