66-066 50.8 x 50.8 mm Hoya R-62 Red Longpass Color Glass Filter 620nm

The 66-066 is a 50.8 x 50.8 mm Hoya R-62 Red Longpass Color Glass Filter, specifically designed with a cut-on wavelength of 620nm. This filter is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase through their website. The filter is currently in stock, indicating its popularity and utility in various optical applications.

The filter is a Color Glass type, which is known for its ability to selectively transmit light within a specific wavelength range while blocking other wavelengths. This particular filter is rectangular in shape, making it suitable for use in a variety of optical systems and setups. The filter has a thickness of 2.5mm, providing sufficient structural integrity while minimizing optical distortions.

The 66-066 filter features a coating on both the front and back surfaces. This coating, identified as EDM 66-044, is likely designed to enhance the filter's performance and durability. The filter's geometry is defined by its width (50.8mm) and height (50.8mm), making it a square filter.

The physical data of the filter indicates that it is designed to cut on at 620nm, with no specified cut-off wavelength. This suggests that the filter will allow all wavelengths greater than 620nm to pass through, while blocking wavelengths below this point.

In terms of shape, the filter is classified as a Thin Lens. This suggests that the filter may have some lens-like properties, potentially including a curved surface or a specific refractive index. However, the item data does not provide further details on these aspects.