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    CaF2 Double Concave Lens

    CaF2 (Calcium Fluoride) Double Concave Lenses are high-precision optical components manufactured from high-purity calcium fluoride single crystals. Featuring two concave surfaces, these negative focal length lenses are designed for beam expansion, image projection, and optical system miniaturization, offering exceptionally high transmission from the ultraviolet (UV) through the visible and into the infrared (IR) spectrum with minimal chromatic aberration.

    Technical Applications & Industrial Use Cases Due to their wide transmission range, low refractive index, and high laser damage threshold, CaF2 double concave lenses are widely deployed across demanding high-tech sectors:
    • Laser Beam Expansion: Act as divergence elements in laser beam expanders and spatial filtering setups across UV, visible, and IR wavelengths.
    • Thermal Imaging & Spectroscopy: Utilized in multi-spectral optical assemblies, FTIR spectrometers, and thermal imaging systems operating in the 3 to 5 micrometer infrared band.
    • UV & Excimer Laser Systems: Deployed in semiconductor lithography, laser material processing, and scientific research requiring high resistance to laser-induced damage.
    Key Specifications & Performance Advantages
    • Material: High-purity Calcium Fluoride (CaF2) single crystal optimized for broad-band transmission.
    • Design Wavelength: Engineered for precision performance with strict focal length tolerance (EFL $\pm 1\%$).
    • Surface Quality: High-precision 60-40 scratch-dig with tight centration tolerance (< 3 arcmin) and protective chamfers ($0.2\text{ mm} \times 45^{\circ}$).
    • Coating Options: Available uncoated or featuring specialized low-absorption infrared anti-reflective (IR1) coatings (average reflectance < 1.5% across 3 to 5 micrometers) to maximize throughput.
    Download Datasheet of CaF2 Double Concave Lens
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    CaF2 Plano Concave Lens

    CaF2 (Calcium Fluoride) plano-concave lenses are high-performance negative optical elements manufactured from high-purity calcium fluoride single crystals. Featuring one flat surface and one concave surface, these lenses provide a negative focal length used for beam divergence, projection systems, and optical path expansion, boasting exceptionally wide transmission from the ultraviolet (UV) through the visible and into the infrared (IR) spectrum with minimal wavefront distortion.

    Technical Applications & Industrial Use Cases Due to their broad transmission window, extremely low refractive index change with temperature, and high resistance to laser-induced damage, CaF2 plano-concave lenses are vital across precision industries:
    • Laser Beam Expansion & Divergence: Utilized as divergence elements in beam expanders and spatial filtering assemblies across UV, visible, and infrared laser systems[cite: 10].
    • Thermal Imaging & Multi-Spectral Optics: Deployed in thermal cameras, FLIR systems, and infrared detectors operating in the 3 to 5 micrometer spectral band[cite: 10].
    • Scientific & UV Instrumentation: Perfect for excimer laser optics, spectrophotometers, and astronomical observation equipment requiring broad broadband transparency.
    Key Specifications & Performance Advantages
    • Material: High-purity Calcium Fluoride (CaF2) single crystal optimized for wide-band transmission.
    • Design Wavelength: Calibrated for precision performance with strict focal length tolerance.
    • Surface Quality: High-precision 60-40 scratch-dig with tight centration tolerance (< 3 arcmin) and protective chamfers.
    • Coating Options: Available uncoated or featuring specialized low-absorption infrared anti-reflective (IR1) coatings (average reflectance < 1.5% across 3 to 5 micrometers) to maximize throughput.
    Download Datasheet of CaF2 Plano Concave Lens
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    CaF2 Plano Convex Lens

    CaF2 (Calcium Fluoride) plano-convex lenses are high-performance positive optical elements manufactured from high-purity calcium fluoride single crystals. Featuring one flat surface and one spherical convex surface, these lenses provide positive focal lengths for focusing collimated beams or collimating point sources, delivering exceptionally broad broadband transmission from the ultraviolet (UV) through the visible and into the infrared (IR) spectrum with minimal wavefront distortion.

    Technical Applications & Industrial Use Cases Due to their wide transmission window, extremely low refractive index dispersion, and high resistance to laser-induced damage, CaF2 plano-convex lenses are vital across precision industries:
    • Laser Focusing & Collimation: Utilized as primary focusing and collimating elements in UV, visible, and infrared laser systems requiring high threshold damage resistance.
    • Thermal Imaging & Multi-Spectral Optics: Deployed in thermal cameras, FLIR systems, and infrared detectors operating in the 3 to 5 micrometer spectral band.
    • Scientific & UV Instrumentation: Perfect for excimer laser optics, spectrophotometers, and astronomical observation equipment demanding wide transparency.
    Key Specifications & Performance Advantages
    • Material: High-purity Calcium Fluoride (CaF2) single crystal optimized for wide-band transmission.
    • Design Wavelength: Calibrated for precision performance at 587.6 nm with strict focal length tolerance .
    • Surface Quality: High-precision 60-40 scratch-dig with tight centration tolerance (< 3 arcmin) and protective chamfers .
    • Coating Options: Available uncoated or featuring specialized low-absorption infrared anti-reflective (IR1) coatings (average reflectance < 1.5% across 3 to 5 micrometers) to maximize throughput.
    Download Datasheet of CaF2 Plano Convex Lens
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