Neutral density filter
Circular gradient neutral density filters (abbreviated as circular gradient density sheets) can achieve linear attenuation of light intensity by rotating the filter, allowing for precise adjustment of light energy in a circular linear direction while maintaining a neutral spectral energy distribution. This enables control and adjustment of energy under the premise of maintaining neutrality. These filters can be applied in fields such as natural light and lasers. By combining two filters and rotating them in opposite directions, a fixed density attenuation effect can be achieved over a limited wide range. The product size options range from 25 mm to 100 mm, and the spectral range is from 250 nm to 2500 nm. Customization of special sizes, densities, and wavelength density sheets is available. Please contact us for more details.
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basic information
Specifications Substrate: BK7, Fused Quartz Outer Diameter: 20mm-200mm Inner Diameter: 7.5mm, 8.0mm, 8.3mm Outer Diameter Tolerance: +0/-0.15mm Inner Diameter Tolerance: +0.15/-0mm Thickness Tolerance: ±0.1mm Parallelism: 3’ Standard Linearity: ±5% Standard Deviation of Maximum Light Density: ±5% Surface Quality: 80-50 Coating Area: 0°-270° Calibration Wavelength: 550nm Design Wavelength: 380nm-2000nm (BK7) 250nm-2500nm (Fused Quartz)
Price range
P1
Delivery Time
P4
Applications/Examples of results
Field of continuous attenuation luminosity with a linear relationship (circular direction) within a wide spectral range.
Company information
AIRY TECHNOLOGY CO., LTD. is located in Dalian, China, and targets the advanced technology markets in China, including electronic semiconductors, LEDs, organic EL, and biotechnology. While introducing and selling advanced technologies and products from Japan, South Korea, and the United States, we also sell high-quality, low-cost industrial raw materials and finished products made in China to industrially advanced countries such as Japan, South Korea, Russia, and the United States, adhering to strict quality standards.
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