CaF2 Plano-concave Lenses

Kingwin Optics specializes in the production of Plano-concave lenses, particularly those made from Calcium Fluoride (CaF2). These lenses are bulk optical singlets with a flat side and a convex side, resulting in a negative focal length and negative spherical aberration. They are versatile and can be used to diverge collimated light beams from a virtual focus, spread a collimated light beam, or increase the focal length of an optical instrument.

Specifications:

Lens Form	Plano-concave Lens
Material	CaF2
Diameters(mm)	12.7-25.4mm (Standard), or Custom
Working Wavelength Range	180-8000nm
Coating	Standard Uncoated, or Custom BBAR/V-coating/MgF2
Surface Quality (S/D)	80/50
Irregularity@632.8nm	λ/4-λ
Centering Error	<3 arc min
Clear Aperture	>80%
Protective Chamfer	0.2mmx45°

 

Features:

• Wide Spectral Transmission Range: CaF2 lenses offer a very wide transmission range, typically from the ultraviolet (UV) region at around 150 nm to the infrared (IR) region at up to 8 µm. This wide transmission range makes them suitable for applications requiring light manipulation across multiple spectral bands.
• Excellent UV Transmittance: CaF2 exhibits excellent ultraviolet transmittance, making it an ideal material for UV optics. This property is particularly useful in applications such as UV spectroscopy, UV imaging, and UV laser systems.
• High Laser Durability: CaF2 has a high laser-induced damage threshold (LIDT), which means it can withstand high laser power without significant degradation. This high laser durability makes CaF2 plano-concave lenses suitable for use in high-power laser systems and applications.
• Low Fluorescence: Compared to some other optical materials, CaF2 has minimal fluorescence, which helps reduce background noise in imaging and spectroscopic applications.
• Customizable Designs: Many manufacturers offer CaF2 plano-concave lenses with customizable dimensions, focal lengths, and coatings to meet specific application requirements. This flexibility allows users to tailor the lenses to their exact needs.
• Precision Optics: CaF2 plano-concave lenses are often manufactured to precise specifications, ensuring high optical quality and performance. This precision is crucial for applications requiring accurate light manipulation and focusing.
• Versatility: Due to their wide transmission range and excellent optical properties, CaF2 plano-concave lenses find applications in various fields, including scientific research, medical and biotech, environmental monitoring, aerospace and defense, and industrial applications.
• Compatibility with Advanced Coatings: CaF2 lenses can be coated with various anti-reflection (AR) coatings to further enhance their optical performance. These coatings can be tailored to specific wavelengths and applications, providing optimal transmission and reflection properties.

Applications:

• Ultraviolet (UV) and Infrared (IR) Optics: CaF2 lenses are highly transmissive in the UV to IR spectral range, making them ideal for applications in UV and IR optics, such as imaging, spectroscopy, and laser systems.
• Beam Expansion and Collimation: Plano-concave lenses are often used in beam expanders and collimators to shape and direct light beams in optical systems.
• Imaging Systems: The negative focal length and spherical aberration correction properties of plano-concave lenses make them useful in imaging systems, particularly for reducing spherical aberration and improving image quality.
• Laser Optics: CaF2 lenses have a high laser-induced damage threshold (LIDT), making them suitable for use in high-power laser systems and applications.
• Optical Communications: The wide transmission range of CaF2 lenses makes them useful in optical communication systems, such as fiber optic networks.
• Scientific Research and Instrumentation: Researchers and scientists often use CaF2 plano-concave lenses in their experiments and instrumentation due to their unique optical properties and material characteristics.
• Medical and Biotech Applications: The UV transmission capabilities of CaF2 lenses make them suitable for medical and biotech applications, such as UV-based imaging, therapy, and analysis.
• Environmental Monitoring: CaF2 lenses are used in environmental monitoring applications, such as remote sensing and spectroscopy, due to their ability to transmit light in the UV and IR spectral ranges.
• Aerospace and Defense: The robustness and high-performance characteristics of CaF2 plano-concave lenses make them suitable for aerospace and defense applications where reliability and precision are essential.
• Industrial Applications: CaF2 plano-concave lenses are used in various industrial applications, such as material processing, quality control, and inspection, where precise optical components are required.

Kingwin Optics offers a range of stocked and custom CaF2 Plano-concave lenses. They also provide off-the-shelf N-BK7 Plano-concave lenses, off-the-shelf UVFS Plano-concave lenses, and custom Plano-concave lenses made from a wide assortment of optical materials including sapphire, ruby, Flint Glass/BaF2/Ge/Si, etc. Kingwin Optics is a proficient and capable supplier and manufacturer of optical lens components, ensuring high purity and strict inspection procedures to comply with published specifications.