The 85-289 is a UV Transmission Grating Beamsplitter, sourced from Edmund Optics, designed with a base shape of 12.7 x 12.7 x 2 mm. This grating is uncoated and features 830 grooves per millimeter, optimized for a wavelength of 588 nm. The grating's physical data includes a blaze wavelength of 250 nm, a blaze angle of 19.4 degrees, and an orientation vector of (1, 0, 0). The grating side is the back, and the order is -1.
The grating's geometry is rectangular, with a width of 12.7 mm, a length of 12.7 mm, and a thickness of 2 mm. The grating material is UVFS mal- 1965. The item's web links are valid and indicate that it is currently in stock. This grating is a Transmission Grating type, which is a type of grating that is designed to diffract light that passes through it.