Linear Step Neutral Density Filter | UltraOpto
Product Overview
UltraOpto Linear Step Neutral Density Filter is specially designed for segmented light attenuation and system calibration scenarios. With multiple fixed optical density levels arranged linearly, it achieves discrete and high-precision graded adjustment of light intensity.
It can be used in combination with linear graduated density filters to easily realize wide-range and precise continuous attenuation control, making it an ideal choice for optical system calibration, spectral measurement, and exposure control. The standard spectral range covers 250nm~2500nm, and it also supports the development of customized solutions with special sizes, customized density arrays and specified wavelengths.
Core Advantages
1. Segmented Precision Adjustment:
Multiple fixed optical density levels arranged linearly enable discrete and high-precision graded attenuation, meeting the requirements of system calibration and linear calibration.
2. Strong Combination and Expansion Capability:
It can be used with linear graduated density filters to achieve wide-range continuous light intensity control from coarse adjustment to fine adjustment, adapting to complex optical systems.
3. Wide Band Coverage:
BK7/K9 substrate covers 380~2000nm, and quartz substrate extends to 250~2500nm, suitable for wide spectral applications from ultraviolet to near-infrared.
4. Rich Standard Density Series:
A~F series standard optical density arrays are available, covering different numbers of levels and attenuation ranges to meet diverse needs.
5. Excellent Optical Performance:
Adopting high-quality optical substrate, with parallelism of 3′ and optical density deviation of ±5%, ensuring attenuation accuracy and consistency.
Technical Parameters
| Parameter Item | Specification |
|---|---|
| Base Material | BK7/K9、quartz |
| Parallelism | 3′ |
| Optical Density Deviation | ±5% |
| Wavelength Range | 380~2000nm（BK7/K9）；250~2500nm（quartz） |
Standard Product Specifications
| Model | Base Material | Size | Optical Density Series |
|---|---|---|---|
| LSND-B50D | BK7/K9 | 50.8×25.4mm | D |
| LSND-B50E | BK7/K9 | 50.8×25.4mm | E |
| LSND-B50F | BK7/K9 | 50.8×25.4mm | F |
Typical Step Density Series
| Series | Optical Density Gear |
|---|---|
| A | 0.04, 0.1, 0.2, 0.3, 0.4, 0.5 |
| B | 0.04, 0.2, 0.4, 0.6, 0.8, 1.0 |
| C | 0.04, 0.4, 0.8, 1.2, 1.6, 2.0 |
| D | 0.04, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 |
| E | 0.04, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 |
| F | 0.04, 0.3, 0.6, 0.9, 1.2, 1.5, 1.8, 2.1, 2.4, 2.7, 3.0 |
Application Scenarios
Optical System Calibration:
As a standard attenuation component, it is used for response calibration and linear calibration of cameras, sensors and light source systems.
Spectral Measurement and Analysis:
Segment-type attenuation control, suitable for attenuation calibration and measurement verification of photometers and spectrometers.
Exposure Control of Imaging Systems:
Combined with gradient filters, it achieves wide-range and high-precision exposure adjustment and optimizes the quality of high dynamic range imaging.
Scientific Research and Teaching:
It is used for graded adjustment of light intensity in optical experiments and is a common component for laboratory teaching and scientific research verification.
Customization Services
UltraOpto can provide personalized customization of substrate materials, size specifications, number of steps, optical density series and operating wavelengths according to your specific needs, helping your optical system achieve optimal performance.
For more technical details or customized solutions, please feel free to contact our technical team.
