λ/2 Achromats
from Ross Optical Industries
Negative Achromats consist of two optical components, a crown and a flint glass lens, cemented together. The crown is usually a bi-concave lens. As is true to all Achromats, they are corrected for color and on-axis spherical aberration. They are used predominantly to extend focal lengths in... [See More]
- Surface Flatness: λ/2
- Lens Application: Infrared (optional feature); Visible; Ultraviolet (optional feature)
- Achromat Type: Doublet
- Focal Length: -20
from ECOPTIK (CHANGCHUN) LTD
Achromatic Lenses are used to minimize or eliminate chromatic aberration. The achromatic design also helps minimize spherical aberrations. Achromatic Lenses are ideal for a range of applications, including fluorescence microscopy, image relay, inspection, or spectroscopy. An Achromatic Lens, which... [See More]
- Surface Flatness: λ/2; λ/4; λ/5; λ/8; λ/10
- Lens Application: Visible
- Achromat Type: Doublet
- Focal Length: 50 to 2000
from Ross Optical Industries
These lenses consist of two optical elements, usually of crown and flint glass types, cemented together to form an achromatic doublet. Most often, the crown lens is a biconvex positive lens. Due to the difference in refractive indices, chromatic aberration with respect to two selected wavelengths... [See More]
- Surface Flatness: λ/2
- Lens Application: Infrared (optional feature); Visible; Ultraviolet (optional feature)
- Achromat Type: Doublet
- Focal Length: 10
from ECOPTIK (CHANGCHUN) LTD
A cemented cylindrical lens can minimize chromatic aberration, so it can be used to focus a single direction of a multi-color light beam. Unlike a spherical lens that produces a point focusing spot, a cylindrical lens can produce a linear focusing spot. Our cylindrical achromatic doublets are... [See More]
- Surface Flatness: λ/2; λ/4; λ/5; λ/8; λ/10
- Focal Length: 50 to 2000
- Achromat Type: Triplet
- Center Thickness: 2 to 50
from Ross Optical Industries
The Steinheil triplets are made of a low index crown element cemented in between two identical meniscus flint elements. Specially designed for 1:1 conjugation, they perform well for conjugate ratios up to 5. These lenses make good relay optics for both on- and off-axis application and are often used... [See More]
- Surface Flatness: λ/2
- Lens Application: Infrared (optional feature); Visible; Ultraviolet (optional feature)
- Achromat Type: Triplet
- Focal Length: 7.5