Neutral-density filter
With their ability to minimize back-reflections and scattered light, absorptive neutral density (ND) filters are ideal for calibration. In contrast to the metallic type, absorption-type filters achieve their optical density by absorbing light within the substrate. For this reason, thickness is a key determinant of opacity. Because of their absorbing quality, these filters are suitable for low-power applications only. Accuray's absorbing ND filters are unique in that they are AR coated to reduce surface reflections. Polished to TWF 1/4 wave or better, this enables them to be stacked without concern about losses and artifacts due to multiple reflections. Absorbing ND filters are perfect for imaging applications.
Save to Favorites
Overview
Applications
Key Features
Datasheet
Please provide your email to download the datasheet.
Invalid email format. Please try again.
Supplier Information
Related Products
-
IPL filter
Optical Filters
Uni-lens
Substrate Material: N-BK7, B270, fused silica or other Dimensional Tolerance [General precision; No unit stated in the original table]: ±0.1 Dimensional Tolerance [High Precision; No Unit Marked in the Original Table]: ±0.01
IPL filters are key optical components in intense-pulsed-light machines, blocking ultraviolet wavelengths and transmitting useful wavelengths from 400nm to 1200nm for equipment described as laser equipment in the source. Applications include photorejuvenation, hair removal, vascular and acne treatments, and skin regeneration.
-
Machine-vision bandpass filter
Optical Filters
Uni-lens
Coating: Antireflection coating Surface Quality: 40/20 Guaranteed peak transmission: >90%
A bandpass filter passes frequencies within a specified range and rejects or attenuates frequencies outside it, selectively transmitting part of the spectrum while rejecting all other wavelengths.
-
Longpass filter
Optical Filters
Uni-lens
Filter Type [LP Series]: Optical interference or colored-glass filter
Long-pass filters serve gas monitoring, temperature sensing, other sensing, thermal imaging, and motion detection. They block shorter wavelengths and transmit longer wavelengths. Blocking can result from reflection, absorption, or both. An antireflection coating on the second surface can improve passband transmission.
-
Dielectric-coated filter
Optical Filters
100optics
Material: BK7 Glass， Fused Silica or Color glass Dimension Tolerance: +0.0/-0.2 Thickness Tolerance [General]: ±0.2 mm
Multilayer-coated filters are made from materials such as Bk7, fused quartz, colored glass, and sapphire. Baijing Optoelectronics supplies bandpass, dichroic, short-pass, and long-pass multilayer-coated filters.
-
Colored Glass Filter
Optical Filters
100optics
Material: Color glass Dimension Tolerance: +0.0/-0.2 Thickness Tolerance [General]: ±0.2 mm
Colored-glass filters are widely used in displays, CCDs, microscopy, photometry, radiometry, imaging, astronomy, instrumentation, and aerospace. Schott, Hoya, and domestic colored glasses are available for ultraviolet, visible, and near-infrared wavelengths.
Related Articles
Founded in 2019, Jilin JC Ultrafast Equipment Co., Ltd. is a high-tech enterprise incubated by the Ultrafast Optoelectronics Center of Jilin University. Our R&D team owns 15 years of profound experience in femtosecond laser micro-nano fabrication.
VCSEL, short for Vertical Cavity Surface Emitting Laser, is a widely used semiconductor laser component in modern optoelectronics. Unlike traditional edge-emitting lasers, VCSEL emits laser light vertically from its chip surface. Thanks to its low power consumption, stable beam quality, low cost, and easy integration, it has become the core light source for 3D sensing, wearable devices, and high-speed optical communication.
As a professional ultraviolet‑laser solution provider, Precilasers has launched its 266 nm narrow‑linewidth industrial laser, delivering reliable single‑frequency output for high‑precision interference lithography, semiconductor inspection and precision metrology applications.
Precise spectral screening is essential for high-precision medical detection, spectroscopic analysis and intelligent imaging systems. Tailored for visible and near-infrared spectral separation, the SP900 shortpass optical filter delivers high-efficiency light transmission and deep infrared blocking performance. It effectively eliminates stray light interference, improves signal-to-noise ratio (SNR), and serves as a core optical component for biomedical instruments, scientific analysis equipment and machine vision systems.
Loading...
Name
Phone
Organization
Use Case
Database Platform