These appear to be unused. Multi-element design in a plastic housing with a diameter of 26.5mm. From the reflections it looks like there are three air spaced elements. Top clear lens diameter of 9mm, rear clear lens diameter of 13mm. Focal length is 22mm. Coated optics. Not sure what it was originally made for. Maybe projection or maybe an eyepiece for some optical device. Used as an eyepiece with a telescope objective it gives nice sharp color corrected images.