Square Neutral Density Filters
from Rainbow Research Optics, Inc.
Rainbow Research Optics, Inc. (RROI) specializes in custom optics. We focus on wavelength ranges from 193 nm to 14 um. Our manufacturing capabilities include a wide range of optical components including lenses, mirrors, windows, prisms, beamsplitters, filters, coatings, and more. While we offer a... [See More]
- Filter Shape: Circular; Square
- Surface Quality: 20-10 Scratch / Dig
- Substrate Material: BK7 glass; UV grade Fused Silica; CaF2
from Rapid Spectral Solutions
Neutral density filters available in a wide range of optical densities and sizes. These filters are suitable for all general use. [See More]
- Filter Shape: Circular; Square; Rectangular
- Filter Diameter, Side Length, or Rectangular Length: 6.25 to 100
- Neutral Density Filter Type: Reflective; Absorptive
- Rectangular Width: 6.25 to 100
from EKSMA OPTICS
EKSMA OPTICS neutral density (ND) filters attenuate VIS spectral region. The optical density varies from 0.1 to 3.0, 1 or 2 inches size square and roud shapes are available. Neutral density absorption type filters decrease the intensity of light without altering the relative spectral distribution of... [See More]
- Filter Shape: Circular; Square
- Filter Diameter, Side Length, or Rectangular Length: 25.4 to 50.8
- Neutral Density Filter Type: Absorptive
- Optical Density: 0.0500 to 4