Optical Bk7 ZF5 Glass Achromatic Lens, Doublet Achromatic Lens,Triplet Achromatic Lens
USD $5 - $65 /Piece
Min.Order:5 Pieces
Changchun Ruiqi Optoelectronics Co., Ltd.
Optical Bk7 ZF5 Glass Achromatic Lens, Doublet Achromatic Lens,Triplet Achromatic Lens
Achromatic Lens is an achromatic consists of a positive low-index Crown Glass lens element cemented to a negative high-index Flint Glass lens element. The elements are chosen so as to cancel chromatic aberration at two well-separated wavelengths, usually in the blue and red region of the spectrum. Focal length is constant at those two wavelengths and focal length shifts are virtually eliminated across the visible wavelengths. One frequent use is to achieve diffraction limited focusing of a laser beam.
Negative Achromats are typically used when there is a need to eliminate chromatic aberration. In addition to reducing chromatic aberration at the design wavelengths, spherical aberration and coma are greatly reduced.
Specification:
Material | BK7,Fused Silica,Sapphire,K9,Caf2 single crystal optical glass |
Dimension | 5-300mm+0/-0.15mm |
Thickness | 5-200mm+0/-0.15mm |
Centration | <3 arc min |
Clear Aperture | >85% |
Surface quality | 60-40,40/20,20/10 |
Clear Aperture | >90% |
Bevel | 0.2*45degree |
Coating | AR,BBAR,MgF2 coating |
Positive Achromatic lenses
Negative achromatic lenses