High quality single lenses and achromatic systems of two lenses. Ideal for experiments and self-made optical instruments. Diameters between 18 and 50 mm, a whole range of different focal lengths. All lenses are surplus from production lines of optical instruments.
- 531+532OMG and 550-569OAL
- Diameters: 15 to 50 mm
- Focal lengths: +26.5 to +250 mm