the optical performance of achromatic doublet lenses is far superior to single lenses. It is suitable for occasions with demanding imaging and beam control requirements. Achromatic double cemented lens is a kind of achromatic lens formed by bonding low dispersion positive lens of crown glass and high dispersion negative lens of flint glass. When designing, at three wavelengths of blue (486.1nm), green (546.1nm) and red (656.3nm), the different values of dispersion and lens shape are optimized to achieve the minimum chromatic aberration. Therefore, the doublet lens can be used in the entire visible light region. The spherical aberration is also optimized during the design. Compared with a single lens, the spherical aberration of the achromatic doublet lens is much smaller.



Bonding 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 optical 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 Achromatic doublet lenses 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. True Optics can provide Positive Achromatic Lens and Negative Achromatic lens by two piece single lens (Doublet) or three piece single lens (Triplet).
Material:                      Clear Optical Glass
Surface Flatness:              < λ/5 @ 633nm
Scratch/Dig:                   < 40/20 (both sides)
Eccentricity:                   ≤ 1arcmin
Focal Length Tolerance         < ± 1%
Diameter Tolerance:            < + 0.00/ -0.10mm
Thickness Tolerance:           < ± 0.1
Clear Aperture:                 ≥ 90% of diameter AR or
Coating:                     AR or BBAR
Diameter  Range:            5~260m

Main products of JUKA Optical are optical lens, optical prisms, and optical window with almost all optical glass and crystalline materials.We provide the whole solutions for our customers from design to the final products. 50% of our optical products are exported to foreign countries, including Europe, North-America, Russia, and parts of countries in Asia. Sichuan JUKA cooperates with many institutes and colleges for their scientific research and OEM is also available.

Juka Optics insists on controlling the precision of the lens quantitatively with various professional testing machines. We have two sets of ZYGO Interferometers and one set of VECCO Interferometer.They can detect the surface shape of lenses with a diameter range of 5-200mm.