Plano Concave Lens
Plano Concave Lenses are precision negative lenses featuring one flat surface and one concave surface, designed to diverge incident light beams and provide accurate beam expansion and optical path adjustment. With high transmission, low optical distortion and precise curvature control, Chenyu Optics manufactures plano concave lenses in BK7, fused silica and UV fused silica, uncoated or with UV AR, VIS AR and NIR AR coatings.
Plano Concave Lens Overview
Plano Concave Lenses are precision negative lenses featuring one flat surface and one concave surface. They are designed to diverge incident light beams and provide accurate beam expansion and optical path adjustment.
With high transmission, low optical distortion and precise curvature control, plano concave lenses are widely used in laser systems, collimation assemblies, imaging systems and scientific optical instruments.
Chenyu Optics supports custom plano concave lens manufacturing according to customer drawings, including custom diameter, focal length, surface accuracy and coating design for prototype and repeat production.
Key Advantages of Plano Concave Lens
Laser Beam Expansion & Collimation Systems
Plano concave lenses are widely used for beam divergence control in laser beam expansion systems, collimation assemblies and imaging optical setups.
Typical Specifications of Plano Concave Lens
| Material Options | BK7, Fused Silica, UV Fused Silica |
|---|---|
| Optical Function | Beam divergence / Negative focusing |
| Focal Length | Customized |
| Transmission | High optical transmission |
| Surface Accuracy | λ/4 – λ/10 @ 633 nm |
| Surface Quality | 20-10 / 40-20 scratch-dig |
| Wavefront Distortion | Low |
| Coating Options | Uncoated, UV AR, VIS AR, NIR AR, custom coating |
Lens Geometry & Optical Principle
Why Choose Chenyu Optics for Plano Concave Lens
Chenyu Optics focuses on drawing-based precision lens manufacturing for laser, imaging and scientific optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard plano concave lenses.
Manufacturing Capability for Plano Concave Lens
Precision Grinding & Polishing
Precise curvature processing and surface polishing for accurate negative focal length and stable beam divergence.
Optical Coating
UV AR, VIS AR and NIR AR coating options for laser, imaging and scientific instrument applications.
Inspection & Packaging
Dimensional inspection, surface review, optical performance checking and protective packaging before shipment.
Custom Manufacturing Options for Plano Concave Lens
Dimensions & Focal Length
Custom diameter and focal length can be manufactured according to customer drawings, with standard or custom plano concave geometry.
Surface & Optical Quality
Surface accuracy, surface quality and wavefront distortion can be selected according to optical performance and system requirements.
Coating & Wavelength Design
Uncoated, UV AR, VIS AR, NIR AR and custom AR coatings can be specified for laser systems, imaging or broadband applications.
Lens Shape Comparison
| Plano Concave | Biconcave | Plano-Convex | Meniscus | |
|---|---|---|---|---|
| Focal Length | Negative | Negative | Positive | Positive or negative |
| Surface Configuration | One flat, one concave surface | Two concave surfaces | One flat, one convex surface | One convex, one concave surface |
| Typical Function | Beam divergence, single-surface aberration control | Stronger beam divergence in a compact form | Beam focusing and collimation | Aberration correction in combined lens systems |
| Typical Applications | Laser beam expansion, collimation systems | Compact beam expanders, optical divergence | Focusing systems, laser collimation | Imaging systems, corrected optical assemblies |
Applications of Plano Concave Lens
Laser Beam Expansion Systems
Beam expansion and divergence control for laser optical systems.
Laser Beam Divergence Control
Precise negative focal length for beam divergence adjustment.
Optical Collimation Systems
Beam collimation and optical path adjustment.
Imaging Systems
Optical path correction for imaging and relay optics.
Scientific Research Equipment
Precision lenses for research and laboratory optical setups.
Precision Optical Assemblies
Negative focal length lenses for precision optical assembly design.
Plano Concave Lens FAQ
What is a plano concave lens used for?
A plano concave lens is used to diverge light beams, adjust optical paths, and expand laser beams in optical systems.
Why does a plano concave lens have a negative focal length?
The concave surface causes incoming parallel light rays to diverge, resulting in a virtual focal point and negative focal length.
Can plano concave lenses be used for laser applications?
Yes. They are commonly used in laser beam expansion, alignment, and beam shaping systems.
Can the focal length and coating be customized?
Yes. Chenyu Optics provides customized focal lengths, materials, dimensions, and AR coatings.
What information should I provide for a quotation?
Please provide diameter, focal length, surface accuracy, surface quality, coating requirement, quantity and drawing if available.
Where can I learn more about lens design?
Additional information on lens design can be found from Edmund Optics.
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Need Custom Plano Concave Lenses?
Send us your drawing, focal length, diameter, coating requirements and quantity. Chenyu Optics will review the optical and mechanical specifications and provide a suitable plano concave lens manufacturing suggestion.