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ATOptik specializes in manufacturing high-precision plano-concave lenses, particularly those made from visible-light glass (e.g., BK7, fused silica) with customizable specifications. These lenses are engineered to meet demanding optical requirements in scientific, industrial, and medical applications. Below is a detailed overview of their features and capabilities, supported by industry-standard technical insights.
The plano-concave lens consists of one flat surface and one concave surface, with a negative focal length. It is designed to diverge parallel light rays, making them appear to originate from a virtual focal point. This lens is primarily used for beam expansion, divergence control, and optical system correction.
| Specifications | Normal | High Precision | Mfg. Limit |
| Material : | Optical glass | Optical glass | Optical glass |
| Design Index : | 1.5168 | 1.5168 | 1.5168 |
| Diameter Tolerance : | +0/-0.1mm | +0/-0.05mm | +0/-0.01mm |
| Thickness Tolerance : | +/-0.1mm | +/-0.05mm | +/-0.01mm |
| Focal Length Tolerance : | +/-2% | +/-1% | +/-0.5% |
| Centeration : | 3 arc min | 1 arc min | 10 arc sec |
| Surface Quality : | 60-40 | 40-20 | 10-5 |
| Surface Figure : | 3 Iambda | 2 lambda | 1 lambda |
| Surface Irregularity : | 1/4 lambda | 1/10 lambda | 1/20 Iambda |
| Clear Aperture : | >80% | >90% | 100% |
| Bevel : | +/-0.2*45 degree | +/-0.1*45 degree | +/-0.05*45degree |
Beam Expansion:
Plano-concave lenses are often used as beam expanders in laser systems to increase the beam diameter, reduce spot size, or control the divergence angle.
Optical System Correction:
These lenses can help correct spherical aberrations or other optical aberrations in optical systems, thereby improving imaging quality and system precision.
Scientific and Industrial Instruments:
Plano-concave lenses are also utilized in scientific research, measurement devices, and projection systems to control beam divergence and optimize optical performance.
Surface accuracy: Up to λ/10 (tested via interferometry) for laser-grade applications
Tolerances:
Diameter: ±0.01 mm
Center thickness: ±0.02 mm
Focal length: ±0.5%
Edge treatment: Blackened or chamfered edges to minimize stray light
Anti-reflective (AR) coatings: Reflectivity <0.2% for visible wavelengths (e.g., 532 nm, 632.8 nm)
High laser-induced damage threshold (LIDT) coatings: Ideal for high-power laser systems (e.g., 1064 nm)
Custom coatings (e.g., beam splitters, filters) available.
If you would like to build your own precision optical products or request a quote, please click one of the two buttons below. Otherwise, please fill out the form below with any questions or concerns.
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B3 Shengshi Shengshi Industrial Park，Auto-ETDZ, Changchun, Jilin, China
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+8613134313842
