Relative Partial Dispersions
N-BK7(H-K9L)				N-SF5(H-ZF2)
Ps,t	0.3071	P's,t	0.3049	Ps,t	0.2246	P's,t	0.2212
PC,s	0.5588	P'C',s	0.6038	PC,s	0.4793	P'C',s	0.5169
Pd,C	0.3073	P'd,C'	0.2562	Pd,C	0.2909	P'd,C'	0.2417
Pe,d	0.2386	P'e,d	0.2370	Pe,d	0.2363	P'e,d	0.2327
Pg,F	0.5359	P'g,F'	0.4761	Pg,F	0.5982	P'g,F'	0.5293
Pi,h	0.7499	P'i,h	0.7447	Pi,h	0.9976	P'i,h	0.9826

Abnormal  Dispersions
N-BK7(H-K9L)				N-SF5(H-ZF2)
△PC,t	0.0171	△PC,s	0.0052	△PC,t	0.0061	△PC,s	0.0015
△PF,e	-0.0006	△Pg,F	-0.0005	△PF,e	0.0008	△Pg,F	0.0073

What is the application of Achromatic Lenses?
1. Microscopes: a typical application of a good quality microscope objective is an achromatic lens, which provides a clear and no chromatic aberration image, which is essential for observing and studying the microscopic world.
2. Photographic lenses: in the field of photography, achromatic lenses are used to make high-performance photographic lenses. These lenses are capable of capturing photographs with accurate colour reproduction and rich details to meet the needs of professional photographers and photography enthusiasts.
3. Telescopes: in the field of astronomy and viewing, achromatic lenses are used to make objective lenses for telescopes. These lenses provide a clear and no chromatic aberration image of astronomical observations and help observers to capture details of distant stars.

How to choose materials for achromatic lenses?
The commonly used materials are composed of (high dispersion) flint glass and (low dispersion) crown glass.

Highly Recommended Optical Lenses from Yutai Optics:
UV Fused Silica Lenses
Positive Meniscus Lenses
Optical BK7 Cylindrical Lens
N-BASF64 / N-BK7 / N-BASF64 Triplet Lenses