Mounted Negative Achromatic Lenses, D=40mm, F=-90mm, VIS-B, United Optical Technology Co., Ltd (CAT#: STEM-OP-1936-YJL)

Mounted Negative Achromatic Lenses, D=40mm, F=-90mm, VIS-B, model 145257, is manufactured by United Optical Technology Co., Ltd.
Achromatic lenses, also known as doublet lenses, are made of two lenses made of materials with different refractive indexes and dispersion rates. For better performance, the side with a larger radius of curvature (the flat side) should face away from the collimated beam. In addition, the achromatic design also helps light sources with a wide wavelength range (composite light sources) to maximize imaging aberration and reduce spherical aberration and chromatic aberration. Achromatic lenses produce clearer images than optical systems using a single lens, further improving the optical performance of the lens. Achromatic lenses are suitable for a variety of applications such as fluorescence microscopy, image relay, detection or spectroscopy. Achromats create smaller spots of light than monolithic lenses.

Installation Ring Diameter: 50.8mm
EFL: -90mm
Coating: Ravg＜0.5%@400-700nm
Thread: M42x0.75
BFL: -93.00mm
CA: 38mm
Mount Ring No.: 500011

Mounted Negative Achromatic Lenses are achromatic doublet lenses with a negative focal length. They are used to correct chromatic aberration and can minimize or eliminate chromatic aberration. They are pre-assembled with a mounting ring, eliminating the need for installation steps.

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