Lenses - Page 2 of 3 - KingwinOptics

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Microscope Thermal Lenses and Other Special LWIR Lenses

Magnification Range: Available magnifications from 1x to 23x, catering to various inspection and analysis needs.

Optimized for Thermal Cameras: Ensures seamless integration and superior performance with thermal imaging devices.

High-Quality Optics: Advanced design and superior quality guarantee exceptional image clarity and sharpness.

Operational Flexibility: Suitable for extreme temperature conditions, maintaining optical clarity and high sensitivity.

Versatile Applications: Includes specialized LWIR lenses for diverse applications, ensuring reliable imaging in various environments.

Applications: Industrial Inspection, Research and Development, Medical and Biological Analysis, Electronics and Semiconductor Inspection, etc.

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MWIR Dual FOV Lenses for Thermal Imaging Camera
Dual Field of View: Dual FOV lenses have a built-in mechanism that allows switching between two different focal lengths. This provides:
- Wide-Angle Mode: A shorter focal length for observing broader areas.
- Narrow-Angle Mode: A longer focal length for capturing detailed images of closer objects.
High Transmission and Low Distortion: These lenses are optimized for high transmission in the MWIR wavelength range, ensuring excellent image quality with minimal distortion.

Modulation Transfer Function (MTF): The optical design of dual FOV lenses ensures high MTF qualities, which means that the lenses can accurately reproduce fine details and provide high-contrast images.

Applications: Surveillance and Security, Industrial Inspection, Scientific Research, etc.
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MWIR Single FOV Lenses for Thermal Imaging Camera
Fixed Focal Length: Single FOV lenses are characterized by their fixed focal lengths, which in turn determines their FOV. The focal length and the dimension of the detector together define the FOV, with the detector dimension remaining constant.

Adjustable Focus Mechanism: Despite having a fixed focal length, single FOV lenses often include mechanisms that allow users to fine-tune the focus:
- Manual Focusing: Users can adjust the focus manually by turning a focus ring or knob.
- Motorized Focusing: Users can remotely adjust the focus using a motorized system, which is particularly useful for applications where manual adjustments are impractical.
Thermal Stability and Athermalization: Some single FOV lenses are athermalized, meaning they are designed to maintain focus despite temperature changes, ensuring consistent performance in varying environmental conditions.

Applications: Surveillance and Security, Industrial Inspection, Scientific Research, etc.
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MWIR Zoom Lenses for Thermal Imaging Camera

Flexible Zooming: Smooth adjustment of focal lengths for capturing images at various distances.

High Magnification: Maximum magnification of x20.

Diffraction-Limited MTF: Outstanding Modulation Transfer Function (MTF) for sharp, high-resolution images.

Maintained Focus: Consistent focus throughout the full zoom range.

Lightweight and Large Aperture: Ideal for diverse surveillance and monitoring missions.

Compatibility: Supports high-resolution imaging with cooled detectors.

Applications: Long-range surveillance, Border and perimeter security, Search and rescue operations, High-resolution thermal imaging, etc.

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N-BK7 Biconcave Lenses

Negative Focal Length: The double concave lens has a negative focal length, which allows it to diverge collimated light beams to the virtual focal point.

Versatile Applications: Biconcave lenses are versatile and can be used for divergence of collimated or focused light beams, beam diameter modulation, correction of spherical aberration in optical assemblies, and increasing the focal lengths of a lens group.

Optimal Performance: Due to its symmetric structure, the double concave lens works best when the conjugate ratio is close or equal to 1:1, providing minimal distortion, spherical/chromatic aberration, and coma.

Cost-Effective: N-BK7 glass is known for its low cost, making it an economical choice for manufacturing optical components.

High Optical Transmission: N-BK7 glass offers high optical transmission across the visible spectrum and into the near-infrared region (350-2200nm).

Durability: The material is known for its high hardness and resistance to scratches and abrasions, as well as its ability to withstand changes in temperature without significant expansion or contraction.

Applications: Beam Divergence, Beam Diameter Modulation, Spherical Aberration Correction, Focal Length Adjustment, Custom Optical Solutions, etc.

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N-BK7 Biconvex Lenses

Positive Focal Length: Biconvex lenses have positive focal lengths, effectively converging collimated light to a single point, making them ideal for various optical applications.

Versatile Applications: With their ability to modulate laser beams, focus light, and facilitate imaging, biconvex lenses are highly versatile and suitable for a wide range of optical systems.

Optimal for Conjugate Ratios Near 1:1: When the absolute finite conjugate ratio is equivalent to or near 1:1 (ranging from 1:5 to 5:1), biconvex lenses are recommended for optimal performance.

Precise Focal Length Calculation: The focal lengths of biconvex lenses can be accurately calculated using the formula: f = (R1*R2) / ((n-1) * (R2-R1)), allowing for precise optical design.

High-Quality N-BK7 Optical Glass: Manufactured using N-BK7 optical glass, these lenses offer low cost, high optical transmission across the visible spectrum and into the near-infrared region, low dispersion, high hardness, resistance to scratches and abrasions, and temperature stability.

Applications: Laser Beam Modulation, Light Focus, Imaging, etc.

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Rod Lenses

High Light Transmission: The precision-polished circumference of rod lenses ensures optimal light transfer, making them highly efficient in various optical systems.

Versatile Design: Rod lenses can be customized with different optical materials and coatings to suit a wide range of applications, providing flexibility in design and performance.

Excellent Focusing Capabilities: These lenses are designed to collimate divergent light and provide linear focusing, making them ideal for imaging and laser processing applications.

Durability and Stability: Made from high-quality optical materials, rod lenses offer excellent durability and stability, ensuring long-term performance in demanding environments.

Applications: Optical Systems, Medical Endoscopes, Laser Processing, Light Pipes, etc.

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Silicon (Si) Lenses

Broad IR Transmission: Silicon lenses are effective in both MWIR and LWIR ranges, making them versatile for various IR applications.

Low Density: Silicon has a low density (2.33 g/cm³), approximately half that of Germanium (Ge) or Zinc Selenide (ZnSe), making it ideal for weight-sensitive applications.

Hardness and Durability: Silicon is harder and less brittle than Germanium, offering better durability and resistance to mechanical stresses.

Chemical Resistance: Silicon exhibits high chemical resistance, ensuring longevity and stability in harsh environments.

Cost-Effective: Silicon is relatively inexpensive compared to other IR materials, providing a cost-effective solution for IR optics.

Applications: IR optics, thermal imaging, laser systems, military optics, medical equipment.

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SWIR Thermal Imaging Camera Lenses

Wavelength Range: SWIR thermal imaging camera lenses operate in the short-wave infrared spectrum, typically covering wavelengths from 0.9 to 1.7 microns. This range allows them to capture thermal information beyond what is visible to the human eye.

Optical Design: These lenses are designed to efficiently transmit and focus infrared radiation within the SWIR range. They often incorporate specialized optical coatings to optimize transmission and reduce reflections.

High Transmission and Sensitivity: SWIR lenses are engineered for high transmission of infrared radiation, ensuring efficient capture of thermal information with minimal loss. This sensitivity is crucial for accurate thermal imaging applications.

Precision and Image Quality: SWIR thermal imaging lenses offer high precision in capturing detailed thermal images. They are designed to maintain sharp focus and clarity across the entire field of view, enabling accurate temperature measurements and analysis.

Applications: Thermal Imaging and Surveillance, Industrial and Scientific Imaging, Environmental Monitoring, etc.

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UV Fused Silica Biconcave Lenses

Negative Focal Length: Our biconcave lenses have a negative focal length, making them ideal for diverging collimated light beams to a virtual focal point.

Versatile Applications: They are suitable for divergence of collimated or focused light beams, beam diameter modulation, correction of spherical aberration in optical assemblies, and increasing the focal lengths of lens groups.

Superior Material: UV Fused Silica (JGS1) offers exceptional transmittance to UV wavelengths, while also being widely transparent to visible and NIR wavelengths (200-2200 nm).

Robust Thermal Properties: These lenses exhibit high-temperature endurance and low thermal expansion, ensuring stable performance in harsh working conditions.

Additional Benefits: UV-fused silica lenses have few bubbles/striae, high homogeneities, chemical inertness, mechanical hardness, and advantageous birefringent properties.

Applications: Optical Instruments, Beam Expanders, Aberration Correction, Focal Length Adjustment, UV Applications, etc.

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UV Fused Silica Biconvex Lenses

Positive Focal Lengths: Biconvex lenses have positive focal lengths, allowing them to converge collimated light to a point.

Versatile Applications: They are primarily used for laser beam modulation, light focus, and imaging, making them suitable for a wide range of optical systems.Optimal Conjugate Ratio: Biconvex lenses are recommended when the absolute finite conjugate ratio is equivalent to or near 1:1, providing optimal performance in these conditions.

High-Quality Material: Made from UV Fused Silica (JGS1), these lenses offer exceptional transmittance to UV wavelengths, while also being widely transparent to visible and NIR wavelengths.

Excellent Thermal Properties: UV Fused Silica lenses exhibit high-temperature endurance and low thermal expansion, ensuring stable performance in harsh working conditions.

Additional Benefits: These lenses are known for their few bubbles/striae, high homogeneities, chemical inertness, mechanical hardness, and birefringent properties.

Applications: Optical Systems, Scientific Research, Medical Equipment, Aerospace and Defense, etc.

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Zinc Selenide (ZnSe) Lenses

Broad Transmission Range: ZnSe lenses transmit efficiently across a wide spectral range from 0.6 µm to 16 µm, covering both visible and infrared wavelengths.

Low Absorption and Minimal Chromatic Dispersion: ZnSe lenses exhibit low absorption and minimal chromatic dispersion, which ensures high signal integrity and minimal distortion.

High Thermal Shock Resistance: ZnSe lenses can withstand significant temperature variations, making them suitable for high-power laser applications and thermal imaging.

Large Refractive Index: With a refractive index of 2.4 at 10.6 µm, ZnSe lenses are highly effective in focusing and manipulating IR radiation.

Customizability: Kingwin Optics offers custom ZnSe lenses with various coating options, including AR coatings at 3-5µm and 8-12µm, BBAR coating across 3-12µm, and specialized coatings for CO₂ lasers.

Applications: CO₂ lasers, thermal imaging, IR spectroscopy, military optics, medical equipment.

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Zinc Sulfide (ZnS) Lenses

High Fracture Strength: Both types of ZnS lenses exhibit high fracture strength, making them suitable for use in demanding environments.

Mechanical Robustness: ZnS lenses are mechanically robust, providing durability and longevity in various applications.

Broad Transmission Range: Multispectral ZnS (Cleartran) lenses offer a broad transmission range from the visible (VIS) to the infrared (IR) region (0.4 to 14 µm).

Chemical Inertness: Multispectral ZnS lenses are chemically inert, ensuring stability and resistance to harsh chemical environments.

Low Scattering: Multispectral ZnS lenses exhibit low scattering, enhancing the quality and clarity of transmitted signals.

Applications: LWIR optics, Multispectral optics, military systems, etc.

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λ10 UV Fused Silica Plano-concave Lenses
Excellent UV Transmission:

UV fused silica, also known as UV-grade fused silica, is known for its high transmission in the UV range, typically from 190 nm to 2600 nm, depending on the coating. This makes it an ideal material for plano-concave lenses designed to work in the UV spectrum.

Low Fluorescence and Laser-Induced Damage Threshold:

UV fused silica exhibits virtually no laser-induced fluorescence, ensuring that the material does not emit light when excited by UV radiation. This is crucial for applications where fluorescence could interfere with measurements or imaging.

It also has a high laser-induced damage threshold, allowing it to withstand high-intensity laser beams without degrading.

Surface Quality and Accuracy:

The λ/10 surface irregularity specification indicates that the surface deviations from a perfect shape are kept to within one-tenth of the wavelength of light used, typically at 633 nm. This level of precision ensures minimal wavefront distortions and optical aberrations.
- The lenses may also have other surface quality specifications, such as a 40-20 scratch-dig rating, which guarantees a smooth surface with minimal defects.
Material Homogeneity and Stability:

UV fused silica has better homogeneity and a lower coefficient of thermal expansion than some other optical materials, such as N-BK7. This results in less variation in optical properties across the lens and improved stability under changing temperature conditions.

Diverging Ability:

As plano-concave lenses, they have a negative focal length, enabling them to diverge collimated beams. This property is useful in applications where beam expansion or projection is required.

Customizable Coatings:

UV fused silica plano-concave lenses can be coated with various antireflection (AR) coatings optimized for specific wavelength ranges, including those in the UV spectrum. This minimizes reflections and maximizes transmission over the desired wavelengths.

Wide Range of Sizes and Focal Lengths:

These lenses are available in various diameters and focal lengths, allowing for flexibility in system design. This ensures that there is a suitable lens for a wide range of applications.

Compatibility and Mounting Options:

UV fused silica plano-concave lenses are often compatible with standard optical mounts and components, facilitating integration into existing optical systems.

Applications: Laser scanners, remote sensing, imaging instruments, fiber lasers, interferometers, and other optical systems, etc.
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λ10 UV Fused Silica Plano-convex Lenses

Superior Transmission in UV and NIR Regions: UV Fused Silica offers excellent transmission from the ultraviolet (UV) to the near-infrared (NIR) spectrum, making it versatile for a wide range of applications.

High Optical Homogeneity: The material’s uniform composition ensures consistent optical performance, reducing image distortion and improving clarity.

Low Thermal Expansion: UV Fused Silica has a low coefficient of thermal expansion, maintaining optical properties even in varying temperature conditions, which is crucial for high-precision applications.

High Surface Quality (10/5 S/D): The superior surface quality with a scratch/dig specification of 10/5 ensures minimal surface imperfections, leading to reduced scatter and improved image quality.

High Precision (λ/10 Irregularity): The λ/10 surface irregularity ensures a high degree of accuracy in the lens shape, resulting in better focusing and reduced optical aberrations.

Chemical Inertness: UV Fused Silica is chemically inert, making it resistant to environmental factors and suitable for use in harsh conditions.

Mechanical Strength: The material’s robust mechanical properties ensure durability and longevity, even in demanding applications.

Absence of Fluorescence: UV Fused Silica does not fluoresce under UV radiation, making it ideal for applications requiring high-purity optical materials.

Flexibility in Application: These lenses are suitable for various uses, including detectors, imaging instruments, lasers, and fiber optics, due to their excellent transmission and high precision.

Applications: Detectors, Imaging Instruments, Lasers, Fiber Lasers, etc.

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λ4-λ N-BK7 Plano-concave Lenses

High Optical Quality:

The λ4 surface accuracy ensures precision optical performance, minimizing wavefront distortions and optical aberrations.

The 40-20 scratch-dig surface quality guarantees excellent surface smoothness, reducing scattering and unwanted diffraction effects.

Broad Wavelength Range:

These lenses are typically designed for operation across a wide wavelength range, although the exact range may vary depending on the coating and intended application. N-BK7 glass itself has a transmission range from 350 nm to 2.0 μm (uncoated), making it suitable for both visible and near-infrared applications.

Material Properties:

N-BK7 is a high-quality borosilicate crown glass known for its excellent homogeneity, low bubble and inclusion content, and ease of manufacturing.

It offers a good balance of transmission, durability, and cost-effectiveness, making it a popular choice for many optical components.

Focal Length and Diverging Ability:

Plano-concave lenses have a negative focal length, enabling them to diverge collimated beams. This property makes them useful in applications where beam expansion or divergence is required.

Versatility:

Available in various diameters, including 6 mm, 9 mm, 1/2″, 25 mm, 1″, and 2″, allowing for flexibility in system design.

Focal lengths can also vary widely, offering a range of options to suit different applications.

Antireflection Coatings:

While the exact coating specifications may not be directly stated as “λ4-λ” in the context of this question, N-BK7 plano-concave lenses can be coated with various antireflection (AR) coatings to minimize reflections and maximize transmission over specific wavelength ranges. This can improve overall optical efficiency.

Applications: Laser Scanners, Remote Sensing Instruments, Imaging Instruments, Fiber Lasers, Interferometers, etc.

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