Product Descriptions：
| Characteristics: | BP575-200/900-1200nm Dual Bandpass Filter |
| Type: | Interference type |
| Color: | Green |
| Central wavelengths(CWL) | 575nm |
| Average Transmissivity(%): | 90% |
| Optical density: | OD2 or customized |
| Shape : | Round or customized |
| Dimension(in mm): | customized |
| Thickness(mm): | 1.0mm or customized |
| Material: | Optical Glass |
| Passband(nm) | 475-675nm, 900-1200nm |
| Spectral range(nm): | 350-1200nm |
| 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 the BP575-200/900-1200nm Dual Bandpass Filter?
The BP575-200/900-1200nm dual bandpass filter is a type of custom optical filter which combine part of visible light and near infrared light to pass through. For Passband, it allows visible light in the range of 475-675nm, as well as 900-1200nm near-infrared light to pass through.Correspondingly,The filter can block light below 460nm include blue and violet light and a portion of infrared light in the range of 700-900nm.
Why need a Dual Bandpass filter for Beauty instrument?
The Laser beauty device requires a dual bandpass filter is because its ability to combine two treatment bands targeting different skin depths into one, achieving multi-functional, precise and efficient comprehensive treatment in one instrument or device.
Firstly, a shorter wavelength band is responsible for processing superficial target tissues. Secondly, the longer near-infrared band penetrates deeper and acts on deep lesions. This combination is particularly common in intense pulsed light (IPL) beauty devices. Here are some typical models that users commonly use for reference:
- BP475-675nm + 900-1200nm dual bandpass filter
- BP530-650nm + 900-1200nm dual bandpass filter
- BP500-650nm + 900-1800nm dual bandpass filter
- BP530-650nm + 900-1800nm dual bandpass filter
It should be noted that the actual wavelength range used should be adjusted or specified according to the user’s design.
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 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 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 should therefore rely on the final spectral parameters required as the standard.
