Optical Crown Glass Neutral Density Filters
Last Updated: April 1, 2025
Description
Optical Crown Glass Neutral Density Filters are designed to reduce the intensity of light without altering its color. These filters achieve this by evenly attenuating light across a portion of the spectrum, making them essential tools in various optical applications.
Working Principle
Optical Crown Glass Neutral Density Filters operate by either reflecting or absorbing light to decrease its transmission. Reflective neutral density filters use partial reflection, while absorptive filters incorporate chemicals into the glass to achieve partial absorption. This uniform reduction in light intensity is crucial for maintaining the color balance of the transmitted light, which is why these filters are particularly useful in applications requiring precise control over light exposure.
Applications
Neutral density filters are widely used in photography to manage exposure levels, especially in high-speed film or long-exposure scenarios. They are also employed in machine vision systems to handle excessive brightness and maintain consistent image quality in environments with varying lighting conditions. Additionally, these filters are used in laser applications and imaging machines to control light intensity without affecting the color of the image.
Advantages over other Neutral Density Filters
Optical Crown Glass Neutral Density Filters offer the advantage of durability and longevity, as they are made from optical glass that can withstand various environmental conditions. This makes them more reliable compared to other materials like gelatine or plastic, which may degrade over time. Furthermore, the absorptive type of these filters has a high damage threshold, reducing the risk of heating and damage during prolonged use.
Limitations
One limitation of Optical Crown Glass Neutral Density Filters is their sensitivity to angles, which can affect the uniformity of light attenuation. Additionally, the absorptive type may have a lower damage threshold compared to reflective types, potentially leading to heating issues if used for extended periods.
Considerations
When selecting Optical Crown Glass Neutral Density Filters, it is important to consider the initial cost, which may be higher due to the quality of the optical glass. However, their durability and long lifespan can offset these initial expenses. Operating expenses are generally low, as these filters require minimal maintenance. Accuracy in light attenuation is a key benefit, but users should be aware of the potential need for replacement if the filters are exposed to extreme conditions that could compromise their integrity.
from Newport MKS
The FBR-ND004 Metallic Neutral Density Filter is a 25.4 mm diameter Optical Crown Glass Metallic ND Filter with an optical density of 0.04 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 25.4
- Optical Density: 0.0400
from Newport MKS
The FBR-ND01 Metallic Neutral Density Filter is a 25.4 mm diameter Optical Crown Glass Metallic ND Filter with an optical density of 0.1 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 25.4
- Optical Density: 0.1000
from Newport MKS
The FBR-ND02 Metallic Neutral Density Filter is a 25.4 mm diameter Optical Crown Glass Metallic ND Filter with an optical density of 0.2 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 25.4
- Optical Density: 0.2000
from Newport MKS
The FBR-ND03 Metallic Neutral Density Filter is a 25.4 mm diameter Optical Crown Glass Metallic ND Filter with an optical density of 0.3 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 25.4
- Optical Density: 0.3000
from Newport MKS
The FBR-ND04 Metallic Neutral Density Filter is a 25.4 mm diameter Optical Crown Glass Metallic ND Filter with an optical density of 0.4 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 25.4
- Optical Density: 0.4000
from Newport MKS
The FBR-ND05 Metallic Neutral Density Filter is a 25.4 mm diameter Optical Crown Glass Metallic ND Filter with an optical density of 0.5 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 25.4
- Optical Density: 0.5000
from Newport MKS
The FBR-ND10 Metallic Neutral Density Filter is a 25.4 mm diameter Optical Crown Glass Metallic ND Filter with an optical density of 1.0 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 25.4
- Optical Density: 1
from Newport MKS
The FBR-ND15 Metallic Neutral Density Filter is a 25.4 mm diameter Optical Crown Glass Metallic ND Filter with an optical density of 1.5 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 25.4
- Optical Density: 1.5
from Newport MKS
The FBR-ND20 Metallic Neutral Density Filter is a 25.4 mm diameter Optical Crown Glass Metallic ND Filter with an optical density of 2.0 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 25.4
- Optical Density: 2
from Newport MKS
The FBS-ND01 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 0.1 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 0.1000
from Newport MKS
The FBS-ND02 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 0.2 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 0.2000
from Newport MKS
The FBS-ND03 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 0.3 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 0.3000
from Newport MKS
The FBS-ND04 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 0.4 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 0.4000
from Newport MKS
The FBS-ND05 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 0.5 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 0.5000
from Newport MKS
The FBS-ND10 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 1.0 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 1
from Newport MKS
The FBS-ND15 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 1.5 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 1.5
from Newport MKS
The FBS-ND20 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 2.0 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 2
from Newport MKS
The FBS-ND25 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 2.5 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 2.5
from Newport MKS
The FBS-ND30 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 3.0 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 3
from Newport MKS
The FBS-ND004 Metallic Neutral Density Filter is a 50.8 x 50.8 mm square Optical Crown Glass Metallic ND Filter with an optical density of 0.04 at 632.8 nm. Our metallic neutral density coatings provide broadband attenuation for low power applications. The coating is deposited on one side of a cost... [See More]
- Substrate Material: Optical Crown Glass; B270 Optical Crown Glass or Equivalent
- Thickness: 3
- Filter Diameter, Side Length, or Rectangular Length: 50.8
- Optical Density: 0.0400