Plano-Concave (PCV) Lenses
- Materials: N-SF11
- Diameter: 12.7 mm
- Diameter Tolerance: +0.00/-0.10 mm
- Clear Aperture: 90% CA
- Center thickness: 3.0 mm
- Center thickness tolerance: ±0.1 mm
- Edge thickness: 4.9 mm
- Radius of curvature: -11.7 mm
- Design wavelength: 587.6 nm
- Working wavelength: 400 nm-700 nm
- Focal length: -15.0 mm
- Focal length diameter: ±1%
- Back focal length: -16.7 mm
- Coating: AR coating
- AR coating: Ravg<0.5%a@working wavalength（6°AOI，single surface）
- Surface finish (scratches/pits): 40/20
- Plane flatness（@633 nm）: λ/2
- Curved surface local aperture: 0.5
- Curved aperture; 3
- Eccentricity: ≤3 arcmin
Description
Introduction of Bote Plano-Concave (PCV) Lenses
A plano-concave lens has one concave side and a flat side, and has a negative focal length. Typically used to collimate a beam, increase (reduce) the focal length, or enlarge (reduce) the image.
In order to obtain smaller spherical aberration, when the incident beam is a collimated beam, the collimated beam should be incident on the concave surface of the plano-concave lens. Because N-SF11 has a lower Abbe number, Bote chose to use N-SF11 to make lenses with smaller focal lengths, and N-SF11 lenses are more suitable for particularly harsh (acidic and alkaline) environments.
In addition to N-SF11 plano-concave lenses, Bote also offers N-BK7, UV fused silica and calcium fluoride plano-concave lenses. N-BK7 is the material most commonly used for high-quality optical components and is widely used in visible and near-infrared applications.
UV Fused silica has good transmittance and low thermal expansion coefficient in the ultraviolet band, while calcium fluoride has extremely high damage threshold and chemical inertness.
Bote provides uncoated plano-concave lenses and three types of anti-reflection coated lenses: 400-700 nm, 700-1100 nm, and 1100-1650 nm.
Our lenses are all processed with precision and quality is strictly controlled to ensure that Bote provides users with high-quality lens products at reasonable prices.
Application
Bote plano-convex lenses are usually used in optical systems to adjust the propagation direction of light beams, improve imaging quality, or achieve specific optical effects.
In special application scenarios such as military observation and security monitoring, the divergent effect of plano-concave lenses can disperse light, thereby helping observers see a wider field of view.
In the fields of optical imaging, photography, and microscopy, plano-concave lenses can converge the incident divergent light beam to a point to achieve focusing of the light to obtain a clearer image during imaging or observation.
Feature of Bote Plano-Concave (PCV) Lenses
- Optical material: N-SF11
- Working wavelength: 400 nm-700 nm (antireflection coating)
- Low Abbe number, high dispersion
- Purpose: imaging, beam expansion or beam contraction
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