Product Description:

 

Achromatic Lens:

 

The achromatic doublet lens is a combination of a positive lens with a low refractive index (crown glass) and a negative lens with a high refractive index (flint glass). Through computer optimization design, paraxial aberrations such as spherical aberration, coma aberration and chromatic aberration have been well corrected. When used for focusing and collimation, the convex lens or the surface with a small radius of curvature usually faces the collimated light. 

 When used for imaging, the convex lens must face the longer object or image distance. When designing, the three wavelengths of blue (486.1nm), green (546.1nm) and red (656.3nm) were optimized for different values of dispersion and lens shape to achieve the smallest chromatic aberration. Therefore, this type of lens can be used in the entire visible light region.        

 

Uses:

 

Cemented lenses are used to minimize chromatic aberration or eliminate chromatic aberration. Its achromatic design also helps to minimize spherical aberration. Compared with a single lens, achromatic doublet lens has much smaller spherical aberration. When used in an infinite conjugate state, the spherical aberration is the smallest. Achromatic lenses are suitable for various applications such as fluorescence microscopy, image relay, inspection or spectroscopy. The manufacturing process of achromatic lenses glues two or more elements together. Compared with a single lens, an achromatic lens can form a smaller spot.

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Specification:

 

Material :  H-K9L/ZF1  

Diameter: 41.5mm 

Focal length: 150mm

Back focus: 148.96mm

Center thickness: 12mm

R1: 185mm

R2: 85.93mm

R3: 46.62mm

Focal length tolerance: ±1% 

Shape tolerance: +0.00/-0.10mm 

Thickness tolerance: ±0.2mm

Surface quality: 60-40

Clear Aperture: > 90%

Coating: 1064 NM

Centrality: 2'

Chamfer: 0.5 (MAX) x45° ±5°

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Detailed Images: