Product Descriptions：
| Product Name: | 510nm Long-pass filter |
| Type: | Interference filters |
| Cut-off Wavelength (nm): | 510nm |
| Average Transmittance(%): | 90% |
| Optical Density： | OD2 |
| Surface Quality: | 60/40 scratch-dig |
| Color: | Yellow |
| Shape: | Rectangle or customized |
| Dimension(mm): | 32x12mm or customized |
| Thickness: | 1.0mm or customized |
| Substrate(mm): | Optical glass |
| Remark: (1) Shape: Rectangle, Square or customized. (2) Common for 86x86mm, 80x80mm, max. 300x300mm. (3) Optional thickness: 0.21、0.3、0.55、0.7、1.0、1.1、2.0、3.0mm…etc. | |
What is a 510nm Long-pass Filter?
A 510nm long-pass filter is an optical filter that allows light above 510nm to pass through while blocking shorter wavelengths, including ultraviolet and blue light.
It supports various applications, such as fluorescence microscopy, fluorescence detection, machine vision, optoelectronic sensing, LED lighting, stage lighting, spectral analysis and laser protection.
What are the key parameters to consider when selecting a Optical Long-pass Filter?
When selecting a suitable long-pass filter, generally Several key parameters should be considered to ensure that the filter meets the requirements of the intended application.
- Cut-off Wavelength: The cut-off wavelength is one of the most important parameters. Manufacturers typically define it as the wavelength at which transmittance reaches 50%.
- Average or Peak Transmittance: Standard long-pass filters typically achieve an average transmittance of 90% or higher. For applications that require higher transmittance, such as 92% or 95%, the target value should be clearly specified during communication with the manufacturer. An additional AR coating may help improve transmittance.
- Blocking Level: Blocking performance is usually expressed as optical density (OD). Standard requirements typically range from OD2 to OD3, while applications that require stronger blocking may specify OD4 to OD6.
- Angle of Incidence (AOI): Interference filters are sensitive to the angle of incidence, which can affect their spectral performance. The standard AOI is typically 0°. If the application requires another angle, such as 30° or 45°, the design specifications should clearly state this requirement.
- Physical and Environmental Requirements: Substrate material, dimensions, thickness, surface quality, and environmental durability also affect filter selection. These factors should match the installation conditions and operating environment of the intended application.
Related products:
Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical vacuum technology that apply depositing nano-materials through ion-assisted evaporation onto a multilayer hard film in a high vacuum environment, which the coating layer is firm and has good tightness and small bandwidth drift. The company have been focus on optical coating for more than 17 years ,and the company offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass Filters, Shortpass Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.
Remark：Because the interference type filter varies its spectral performance at different angles, the spectral parameters usually determine its appearance color; moreover, the pictures in this link may originate from various shooting angles, so the actual color of the parts should therefore refer to the final spectral parameters required.
