1.Product Descriptions :
| Characteristics: | Negative 450-100nm Notch Filter |
| Type: | Interference type |
| Central Wavelength (CWL): | 450nm |
| Peak Transmittance(%) : | >92% |
| Full Width at Half Maximum(FWHM): | 100nm |
| Optical Density (OD): | OD2 |
| Shape: | Customized |
| Color: | Yellow |
| Angle of Incidence(AOI)： | 0° |
| Surface Quality: | 60/40 |
| Dimension(mm): | Customized |
| Thickness(mm): | 0.21-3.0mm |
| Substrate: | Optical Glass |
| Remark：support customized for 200-2000nm wavelength. | |
2. Spectral measurement graph
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Picture 1: Negative 650-100nm Notch filters Spectral measure graph |
3.What is negative 450nm notch filters？
A negative 450nm notch filter is an optical component that strongly blocks a band around 450 nm wavelengths (blue light) while transmitting nearly all other wavelengths (UV, other visible, and NIR) with high efficiency. Typically, the negative 450nm notch filters finds applications in laser & optical system protection, biomedical imaging & microscopy, analytical chemistry & sensing, industrial machine vision & inspection, entertainment & display technology.
4.What is key parameter when choose for right notch filter?
When selecting a notch filter, normally the following factors need to be considered:
- Firstly, Center wavelength (CWL) will be one of key parameter to designate, it refer to the center of the blocked wavelength band, e.g., 532 nm, 1064 nm.
- Notch depth, it refers to the degree of blocking, expressing as optical density (OD), or also as a percentage of transmission at the specified wavelength.
- Notch width, generally refers to the full width at half maximum (FWHM).
- Passband transmission: the average transmission over the wavelength ranges on either side of the notch where require high throughput.
- Angle of Incidence, 0° stands for normal incidence, 45° is a common off-axis option.
- Substrate material: typically, ultra white glass is one of most common used cost-effective optical glass, higher performance can be quartz glass.
Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical technology that apply depositing nano-materials through ion-assisted evaporation onto a multilayer hard film in a high vacuum environment which 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 offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass & Short Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.
Other Notch Filters include 450nm Notch filter, 532nm Notch filters, 550nm Notch filters, 650nm Notch filters, 1064nm Notch Filter etc.
