Optics, optomechanics, lasers, spectrometers and optical design software from manufacturers we know part by part. Listed prices where a price is honest, a written quotation where it is not.
Fourteen articles on the questions that actually decide a specification: whether to use colour glass or an interference filter, what a damage threshold figure really means, where alignment drift comes from, and why the collimation matters more than the magnification.
You are not buying a part number, you are building a measurement. Tell us the wavelength, the aperture and what you need to see. An engineer answers, not a form robot.