Product Descriptions：
| Product Name: | 450-480nm Blue light Narrow Bandpass Filters |
| Type: | Interference type |
| Color: | Blue |
| Central wavelengths (CWL): | Customized |
| Average Transmissivity (%): | 90% or 95% with AR coating |
| Optical density: | OD2 or customized |
| Shape: | Round or customized |
| Dimension (in mm): | customized |
| Thickness (mm): | 1.0mm |
| Material: | Optical Glass |
| Passband (nm): | customized |
| Spectral range (nm): | 350-1100nm |
| 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 Blue Color Narrow Bandpass Filter for Jaundice Testers?
The jaundice tester used Optical filter, also known as jaundice detection filter, is a type of narrow bandpass filters that allows light within a specific blue or green wavelength range to pass through.
Blue Narrow bandpass filters typically cover the 450–480nm range, while green bandpass filters usually cover 500–570nm. The required center wavelength (CWL) can also vary depending on the detection system and its optical requirements.
Most jaundice tester filters use the dielectric interference coatings to select specific wavelengths with high precision. These coatings transmit the target blue or green light while blocking unwanted wavelengths, helping reduce optical interference and improve detection accuracy.
Spectral measurement graph
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Picture 1: NBP460-20nm Optical Filter Spectral Measurement Graph |
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Picture 2: BP460-40nm Optical Filter Spectral Measurement Graph |
Related products:
450–475nm Blue Color Bandpass Filter, Dielectric Coating, Unmounted Optical Bandpass Filters
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.
