Achromatic doublet lenses have significantly better optical performance than singlet lenses in visible imaging and laser beam manipulation applications. Achromatic Lenses are consist of two elements, usually of a positive low-index crown glass cemented to a negative high-index flint glass that have been corrected for chromatic aberration with respect to two or more selected wavelengths. Tempotec provides achromatic lenses consisting of two elements. These lenses have considerably reduced not only chromatic aberration bust also spherical aberration and coma aberration. These are designed with respect to three wavelength 480.0nm, 546.1nm and 643.8nm.           

Cemented by two pieces of single lenses with different glasses.         
e.g. BK7 and SF5           

Positive Achromatic Lenses     
Design Wavelength: 480.0nm, 546.1nm, 643.8nm      
Diameter Tolerance: +0.0, -0.15mm     
Paraxial Focal Length: ± 2%@546.1nm    
Centration: 3 arc minutes    
Clear Aperture: >80% 
Surface Irregularity: λ/4@632.8nm   
Surface Quality: 60-40 scratch and dig    
AR/AR coated    
Protective Bevel   

Negative Achromatic Lenses          
Design Wavelength: 480.0nm, 546.1nm, 643.8nm  
Diameter Tolerance: +0.0, -0.15mm      
Paraxial Focal Length: ± 2%@546.1nm    
Centration: 3 arc minutes    
Clear Aperture: >80%    
Surface Irregularity: λ/4@632.8nm   
Surface Quality: 60-40 scratch and dig   
AR/AR coated    
Protective Bevel   

Custom design and ring mount assembly service is available apon request.