FELH0550 Dia:25.0 mm Premium Longpass Filter; Cut-On Wavelength: 550nm

The FELH0550 is a high-quality longpass filter, manufactured by Thorlabs, a leading vendor in the optical industry. This filter is designed with a circular base shape, making it compatible with a wide range of optical systems. The filter boasts a diameter of 25.0 mm and a thickness of 3.5 mm, ensuring durability and stability in its operation.

The FELH0550 is specifically designed with a cut-on wavelength of 550nm. This means that it allows transmission of wavelengths longer than 550nm while blocking shorter wavelengths. The cut-on wavelength is a crucial parameter in selecting a longpass filter, as it determines the wavelength at which the filter starts to transmit light. This filter's cut-on wavelength makes it ideal for applications that require the separation of visible light from infrared light.

The filter's physical data further enhances its performance. With no cut-off wavelength specified, it can be inferred that this filter allows the transmission of all wavelengths longer than its cut-on wavelength. This broad transmission range makes it a versatile component in various optical setups.

The FELH0550 is coated with a special coating on both the front and back surfaces. This coating, identified as 'tho felh0550', is designed to enhance the filter's performance and durability. The specifics of this coating are not provided in the item data, but it can be assumed to contribute to the filter's overall efficiency and longevity.

In terms of shape, the FELH0550 is designed in a thin lens shape. This design not only adds to the filter's durability but also makes it easier to integrate into existing optical systems. The 'Thin Lens' shape ensures that the filter does not significantly alter the path of light, making it a suitable choice for precision optical applications.

In conclusion, the FELH0550 Dia:25.0 mm Premium Longpass Filter; Cut-On Wavelength: 550nm is a robust and versatile optical component, ideal for applications that require the separation of visible light from infrared light. Its high-quality construction, coupled with its specific wavelength characteristics, makes it a valuable addition to any optical system.