Filters - KingwinOptics

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Broadband Infrared Filters

Broad Spectral Coverage: As the name suggests, broadband infrared filters offer coverage over a wide range of infrared wavelengths, enabling them to be used in applications requiring multi-wavelength or continuum measurements.

High Transmission Efficiency: These filters are designed to transmit infrared radiation with minimal loss, ensuring high signal-to-noise ratios in measurements and imaging.

Customizable Spectral Characteristics: The spectral response of broadband infrared filters can be tailored to specific requirements, such as blocking specific wavelengths or enhancing transmission at certain bands.

Durability and Stability: High-quality broadband infrared filters are designed to withstand environmental factors and maintain their performance over extended periods.

Compatibility with Different Systems: These filters can be integrated into various optical systems, including spectrometers, cameras, and remote sensing instruments.

Applications: Astronomy and Astrophysics, Remote Sensing and Earth Observation, Thermography and Non-Destructive Testing (NDT), Biomedical Imaging, Night Vision and Thermal Imaging Systems, Spectroscopy and Material Analysis, Telecommunications, etc.

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Circular Variable Neutral Density Filters
Adjustable Attenuation:
- The circular variable ND filter allows for fine-tuned control of light attenuation by simply rotating the filter.
- The optical density (OD) increases linearly with the rotation angle, providing smooth and predictable adjustments.
Linear Density Relationship:
- The linear relationship between optical density and rotation angle allows for precise control, which is particularly useful for applications requiring accurate light modulation.
- Enables motorized rotation for precise logarithmic sweeps in transmitted beam power.
Specifications:
- Outer Diameter: Available in sizes ranging from 10mm to 200mm.
- Coating Region: Covers 0-270°.
- Optical Density Range Options: Max. OD1, Max. OD2, Max. OD3, and Max. OD4.
Ease of Use:
- Users can easily set the filter to achieve the desired transmitted beam power by referencing the angular markings.
- This convenience facilitates quick and accurate adjustments during experiments or industrial processes.
Applications: Industrial Imaging, Machine Vision, Spectroscopy, Laser Experiments, etc.
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Colored Glass Absorptive Filters

Cost-Effectiveness: These filters are budget-friendly, providing a cost-effective solution for various optical applications.

Insensitivity to Angle of Incidence (AOI): Unlike interference filters, colored glass absorptive filters are insensitive to the angle of the incident light, ensuring consistent performance regardless of the light’s entry angle.

High Chemical Resistance: The dye is impregnated throughout the filter, making it highly resistant to chemical reactions and suitable for use in harsh environments.

No Polarization Effect: These filters do not exhibit polarization effects, maintaining the natural polarization state of the transmitted light.

Broad Wavelength Isolation: Capable of isolating a broad range of wavelengths, they excel in applications that require blocking short wavelengths and transmitting longer wavelengths.

Applications: Optical Instrumentation, Photography and Cinematography, Medical Diagnostics, Scientific Research, etc.

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Dichroic Filters for RGB Laser Show

High Transmittance and Reflectance: Optimized for RGB wavelengths (red, green, blue).

Custom Options: Tailored to meet specific requirements.

Wide Range of Filters: Includes long-pass, short-pass, bandpass, band stop (notch) filters, and color correction filters.

Applications: CCD Imaging, Digital Projection, Light Shows, Machine Vision, Printing, etc.

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Fluorescence Filters

Critical Component: Essential for biomedical and life science instruments.

Spectral Separation: Effectively separates and selects characteristic spectral bands of excitation and emitted fluorescence.

Versatile Applications: Widely used in Point-of-Care Testing (POCT), Polymerase Chain Reaction (PCR), fluorescence enzyme labeling instruments, and fluorescence microscopes.

Modular Design: Consists of two to three parts: excitation filters, emission filters (barrier filters), and optionally dichroic filters based on optical path requirements.

Applications: Point-of-Care Testing (POCT), Polymerase Chain Reaction (PCR), Fluorescence Enzyme Labeling Instruments, Fluorescence Microscopes, etc.

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High Transmission Narrowband Filters

Hard Coatings: Our narrowband filters utilize advanced hard coating techniques to ensure robustness and durability, making them suitable for demanding laboratory environments.

Optical Density (OD4): With an OD4 rating, these filters effectively block unwanted wavelengths, enhancing measurement accuracy and ensuring precise wavelength selection.

10nm Bandwidth: The 10nm bandwidth allows for precise isolation of specific wavelengths, crucial for applications requiring high selectivity and accuracy.

Blocking Range: These filters offer a broad blocking range from 200-1200nm, providing extensive protection against undesired wavelengths.

High Transmission: Exceptional optical transmission in the designed transparent range ensures minimal optical distortion, enabling researchers and engineers to achieve accurate and consistent results.

Mounted Design: The mounted design facilitates easy integration into various optical systems and experimental setups.

Applications: Fluorescence Microscopy, Raman Spectroscopy, Laser Experiments, etc.

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Infrared Neutral Density Filters

Metallic Coatings: The attenuation properties of these filters are achieved through metallic coatings. The metal alloy coatings are carefully selected and deposited to ensure precise control over light transmission.

Substrate Material: Germanium is used as the substrate material due to its excellent properties in the IR spectrum. Germanium substrates ensure optimal performance and durability in demanding applications.

Broad Wavelength Coverage: These filters are designed to attenuate radiation over a wide range in the IR region, optimized at 2.2 microns. They are capable of covering wavelengths up to 15 microns, making them suitable for various IR applications.

Applications: Thermal Imaging, Spectroscopy, Laser Systems, Sensor Protection, etc.

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Infrared Neutral Density Filters

Custom Solutions: Kingwin Optics offers custom infrared ND filters with metallic coatings on Germanium substrates. These filters are designed to provide even attenuation over a wide range of infrared wavelengths, making them suitable for a variety of applications in thermal imaging, spectroscopy, and laser systems.

Performance: The ND coatings are optimized for performance at 2.2 microns and can effectively attenuate light across wavelengths up to 15 microns. This broad coverage ensures versatility and high performance in diverse infrared applications.

Applications: Thermal Imaging, Spectroscopy, Laser Applications, etc.

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Laser Line Dichroic Filters

High Wavelength Selectivity: Dichroic filters exhibit excellent wavelength selectivity, enabling precise separation of different wavelength bands. This is crucial in applications requiring specific wavelength transmission or reflection.

Low Loss and High Efficiency: These filters are designed to minimize light loss, ensuring high transmission and reflection efficiencies for the targeted wavelength bands. This is essential for maintaining signal strength in optical systems.

Broadband Capability: Some dichroic filters are capable of separating broad wavelength ranges, making them suitable for use in complex optical systems with multiple wavelengths.

Durability and Stability: High-quality dichroic filters are designed to withstand various environmental conditions and maintain their optical properties over time, ensuring long-term reliability in demanding applications.

Customizable: Manufacturers can tailor the spectral properties of dichroic filters to meet specific application requirements, providing flexibility in system design.

Applications: Laser Systems, Imaging and Microscopy, Spectroscopy, Astronomy, Industrial Applications, etc.

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Laser Line Filters

High Transmission at Laser Wavelengths: These filters exhibit high transmission efficiency (>90%) at the specified laser emission wavelengths, ensuring minimal loss of laser power.

Out-of-Band Blocking: They provide excellent attenuation outside the narrow passband, effectively suppressing ambient light and background noise.

Steep Slopes: Laser line filters feature steep transition slopes between the passband and the stopband, ensuring precise isolation of laser wavelengths.

Flat Passband Profile: Maintains a flat transmission profile within the designated wavelength range, minimizing wavelength distortion and maintaining signal integrity.

Durable Construction: Engineered with advanced dielectric interference coatings, laser line filters are durable and capable of withstanding the rigors of various optical environments.

Standard and Custom Options: Offers a wide range of central wavelengths (337.1nm to 1550nm) to accommodate various laser types and applications.

Applications: Laser-Based Spectroscopy, Confocal Microscopy, Flow Cytometry, Fluorescence Imaging, etc.

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Linear Variable Bandpass Filters

Versatility: A single linear variable bandpass filter can replace multiple traditional filters, offering a broad range of wavelength tuning.

Adjustability: Easily adjust the center or edge wavelength by sliding or rotating the filter to meet various application needs.

High Spectral Resolution: Advanced wedge-shaped multi-layer coating techniques ensure high spectral resolution and low optical loss over a broad tunable spectral range.

Deep Blocking Depth: Efficiently cuts off undesirable light, maximizing optical performance at the required wavelength.

Compact and Lightweight: Ideal for integration into portable and space-constrained optical setups.

Customizable Specifications: Central wavelength, bandwidth, and filter size can be tailored to meet specific application requirements.

Applications: Spectroscopy, Hyperspectral Imaging, Fluorescence Microscopy, etc.

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Linear Variable Edge Filters

Adjustable Cut-on/Cut-off Wavelengths: Offers flexibility and precise control over the spectral range of transmitted light.

High Performance: Steep spectral cut-on/cut-off, excellent transmittance within the passband, and high optical density ensuring minimal spectral leakage.

Customizable Specifications: Available in both standard and custom configurations to meet specific application needs.

Versatile Applications: Suitable for use in spectroscopy, fluorescence microscopy, hyperspectral imaging, and optical instrumentation.

Applications: Spectroscopy, Fluorescence Microscopy, Hyperspectral Imaging, Optical Instrumentation, etc.

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Longpass Dichroic Filters

Sharp Cut-on Slope: Provides optimum optical selection.

High Durability: Designed to withstand high-intensity light sources.

Wide Range of Filters: Including long-pass, short-pass, bandpass, band stop (notch) filters, and color correction filters.

Applications: CCD Imaging, Digital Projection, Light Shows, Machine Vision, Printing, etc.

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Longpass Filters

Precision Cuton Wavelength: Our custom longpass filters are engineered with precise cuton wavelengths tailored to specific applications, ensuring optimal performance in selective wavelength transmission.

Advanced Coating Techniques: Utilizing state-of-the-art coating technologies, our filters exhibit superior blocking capabilities for shorter wavelengths while allowing the desired longer wavelengths to pass through effectively.

High Transmission and Steep Transition: These filters offer high transmission rates for the longer wavelengths with steep transitions between the transmission and blocking regions, enhancing the clarity and quality of the transmitted light.

Versatile Material Options: We provide longpass filters made from a variety of substrate materials, such as glass, fused silica, and specialized optical polymers, to suit different operational environments and requirements.

Robust and Durable: Our filters are designed for durability, ensuring reliable performance even in demanding conditions. They are resistant to environmental factors such as temperature fluctuations and humidity.

Custom Dimensions and Shapes: Longpass filters can be customized in various dimensions and shapes to fit specific instruments and setups, providing flexibility and ease of integration.

Applications: Optical Experiments and Spectral Analysis, Biomedical Imaging and Analysis, Infrared Imaging and Thermography, Materials Science and Research, Environmental Monitoring, etc.

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Machine Vision Filters

Enhancing Image Contrast: Filters can increase the contrast between different features of an image, making it easier to distinguish between them.

Adjusting Color Rendition: Filters can correct or enhance the colors in an image, ensuring accurate color representation.

Blocking Unwanted Illumination and Glare: By selectively filtering out unwanted light, filters can reduce glare and reflections, improving image clarity.

Reducing Image Brightness: Neutral density filters can reduce the brightness of an image without changing the exposure time or adjusting the f-number (f/#).

Applications: Autonomous Driving, Safety Monitoring, Intelligent Traffic Systems, Automated Facilities, etc.

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Narrow Bandpass Filters (220-700nm)
High Precision Optical Performance:
- Utilizes dielectric coating techniques to achieve exceptional spectral selectivity and high transmission rates.
- Ultra-thin substrates are possible, allowing compact integration into devices like cameras.
Wide Transmission Central Wavelength Range:
- Covers a broad spectrum from Ultra-Violet (UV) to Visible (VIS), ranging from 200nm to 700nm.
- Various bandwidth options are available to meet specific application needs.
Material and Construction:
- Made of dielectric coatings and high-quality glass substrates.
- Colored glass can be bonded with BK7 or Fused Silica to enhance spectral selection.
Standard and Custom Options:
- Dozens of stock modules with diameters ranging from 6mm to 25.4mm, featuring hard coatings for durability.
- Custom filters tailored to specific requirements can be designed and manufactured upon request.
Application: Biochemistry Analyzers, Enzyme Labeling Instruments, Polarimeters, Fluorescence Microscopy, UV Narrow Bandpass Filters, High Transmission Narrow Bandpass Filters, etc.
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