Product Descriptions:
| Characteristics: | 450+815nm Dual Bandpass Filter |
| Type: | Bandpass Filter |
| Cut-off Wavelength(in mm): | 450nm ± 5nm, 815nm ± 5nm |
| Peak Transmittance(%) : | >85% |
| Full Width at Half Maximum(FWHM) | 45nm |
| Optical Density (OD): | OD 2 – OD 3 |
| Shape: | Round, Square, Custom Shape |
| Color: | Blue |
| Angle of Incidence(AOI) | 0° , 45° or specified |
| Surface Quality: | 60/40 scratch-dig |
| Dimension(mm): | Specified** |
| Thickness(mm): | specified |
| Substrate: | Ultra-clear glass,K9,BK7,B270,D2637T, Quartz Glass(Fused Silica) or other specified |
| Remark： (1)Spectral range:350-1100nm (2) Size customized: 86x86mm, 80x80mm, other can customized, max. 300x300mm (3) Thickness available: 0.21、0.3、0.55、0.7、1.0、1.1、1.5、1.8、2.0、3.0mm…etc. | |
Measured Spectral Graph – 450+815nm Dual Bandpass filter:
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| Picture 1: 450+815nm Dual Bandpass Filter Spectral Graph measurement |
What is 450+815nm Dual Bandpass Filter?
A 450nm + 815nm Dual Bandpass Filter is a specialized optical filter that allows two discrete wavelength bands to pass through simultaneously on the same optical substrate. Its core function is to efficiently transmit only the two specific bands centered at 450nm and 815nm, while blocking all other light outside these bands.
What is typical application for 450+815nm Dual Bandpass Filters?
450+815nm Dual Bandpass Filters serve in fluorescence microscopy and biomedical imaging, where they simultaneously isolate blue and near-infrared fluorescence signals. They also support flow cytometry, drug screening, and multi-color cell analysis. In addition, these filters function in machine vision and optical sensing systems, enabling simultaneous detection across two distinct spectral bands.
What is key parameter when choose for right 450+815nm Dual Bandpass Filters?
When selecting a 450 + 815nm Dual Bandpass Filter, you need to consider the following key factors. First, center wavelength accuracy, which determines the ability to screen specific wavelengths of light. Second, full width at half maximum (FWHM) , which defines the wavelength range allowed to pass through. Third, transmittance requirements, reflecting the transmission efficiency for target wavelengths. Fourth, blocking depth and range, indicating the ability to block non-target wavelengths. Fifth, angle of incidence (AOI) , which affects filter performance. Sixth, substrate and physical specifications. Common substrate materials include K9/BK7, fused silica, and others.
What are the core functions and features of a 450+815nm Dual Bandpass Filter?
The core functions and features of 450+815nm Dual Bandpass Filters include:
First, dual-channel transmission: Simultaneously transmits two wavelength bands—450nm (blue light) and 815nm (near-infrared light).
Second, dual-channel blocking: Blocks all other wavelengths outside these two bands, from ultraviolet to far-infrared.
Third, one filter replaces two: Substitutes for two separate filters, simplifying the optical system.
Fourth, no crosstalk: The two channels are isolated from each other without interference.
Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical technology that apply depositing nanomaterials 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. Liyuan optoelectronics 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 typical Bandpass filters in stock from Liyuan Optoelectronics include BP810 BP820 BP830 BP840 BP850 BP860 BP870 BP880 BP890 BP…etc.
