These lenses have negative focal lengths, diverge collimated incident light, and form only virtual images which are seen through the lenses. They are ...Control Optics
BK7 Plano-concave Cylindrical Lenses size and coating of the lenses can be customized according to users needs Specification Material Schott BK7 ...Changchun Bobang Technology Co. Limited
A plano-concave lens is compose of a plane and concave surface, has a negative focal length and negative spherical aberration, which often can be ...Changchun Boxin Photoelectric Co.
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