| Characteristics: | Circular Polarizer Filter |
| Type: | Polarizer |
| Peak Transmittance(%) : | 30%-90% |
| Shape: | Round, Square, Custom Shape |
| Color: | Grey |
| Angle of Incidence(AOI) | Usually 0°, 45° or 90° |
| Surface Quality: | 60/40 scratch-dig |
| Dimension(mm): | Specified** |
| Thickness(mm): | specified |
| Substrate: | PVA, Quartz, MgF₂, TAC |
Remark： (1) Size customized: 86x86mm, 80x80mm, other can customized, max. 300x300mm (2) Thickness available: 0.21、0.3、0.55、0.7、1.0、1.1、1.5、1.8、2.0、3.0mm, etc. | |
What is a Circular Polarizer (CPL)?
A Circular Polarizer (CPL) is a camera filter that screws onto the front of a lens. Its primary job is to reduce glare and reflections from non-metallic surfaces like water and glass, deepen the blue of the sky, and increase color saturation in your photos
Linear vs. Circular Polarizer ?
| Feature | Linear Polarizer | Circular Polarizer (CPL) |
| Polarizing Effect | Excellent | Excellent (identical visual results) |
| Autofocus/Metering | Incompatible with modern cameras | Fully Compatible |
| Common Use Today | Rare; mostly in old film cameras or some scientific applications. | The standard for all modern digital photography. |
What is typical application for Circular Polarizer (CPL)?
Typical application for Linear Polarizer (LPL) is very broad, include Landscape & Nature Photography, Water & Reflection Control, Urban, Architectural & Product Photography, Portrait Photography, etc.
What is key parameter when choose for Circular Polarizer (CPL)?
When selecting Circular Polarizer (CPL), you need to consider the following key factors. First, wavelength range. Ensure the polarizer operates effectively in your required spectral band. Second, extinction ratio (ER). Extinction ratio is a core metric for evaluating polarizer performance. Third, transmission (single-pass), commonly ranges from 30% to 90%. Fourth, size and tolerance. Fifth, transmission axis angle, typically, the angle is 0°, 45°, 90°, etc.
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 Fitlers, IR cut-off Filters, Longpass & Short Filters,Notch Filters, ND filters, Star filters, Optical sapphire block, Optical sapphire cover, Polarizer and Colored Filter.
