Relative Partial Dispersions
N-BAF10(H-ZBaF52)				N-SF57(H-ZF52)
Ps,t	0.2488	P's,t	0.2460	Ps,t	0.2039	P's,t	0.2003
PC,s	0.5085	P'C',s	0.5494	PC,s	0.4568	P'C',s	0.4922
Pd,C	0.2985	P'd,C'	0.2486	Pd,C	0.2855	P'd,C'	0.2370
Pe,d	0.2378	P'e,d	0.2351	Pe,d	0.2353	P'e,d	0.2312
Pg,F	0.5633	P'g,F'	0.4993	Pg,F	0.6207	P'g,F'	0.5485
Pi,h	0.8360	P'i,h	0.8266

Abnormal  Dispersions
N-BAF10(H-ZBaF52)				N-SF57(H-ZF52)
△PC,t	-0.0114	△PC,s	-0.0048	△PC,t	0.0023	△PC,s	-0.0012
△PF,e	-0.0002	△Pg,F	-0.0020	△PF,e	0.0026	△Pg,F	0.0155

What is the application of Achromatic Lenses?
1. Projectors: in projection display technology, achromatic lenses are used in the optical system of projectors. These lenses ensure colour accuracy and clarity of the projected image, enhancing the visual experience of the viewer.
2. Spectral analysis: achromatic lenses are used in spectral analysis instruments in scientific research and industrial testing. These lenses ensure spectral accuracy and resolution and help researchers to analyse the composition and properties of substances.
3. Medical imaging: in medical imaging equipment, such as endoscopes and ophthalmic examination equipment, achromatic lenses are used to capture high-definition images of the inside of the human body. These lenses provide clear and no chromatic aberration images to help doctors with diagnosis and treatment.
4. Virtual Reality and Augmented Reality: achromatic lenses are used in optical display systems in virtual reality (VR) and augmented reality (AR) devices. These lenses ensure clarity and colour accuracy of virtual images, enhancing the immersive user experience.

What's the difference between two-piece achromatic lenses and three-piece achromatic lenses?
Two-piece achromatic lenses: Simple structure and low cost, but limited correction of higher order colour differences.
Three-piece achromatic lenses: Better colour and aberration correction, but  complex structure, high cost.

Highly Recommended Optical Lenses from Yutai Optics:
IR Lenses
N-SF11 Cylindrical Lens
Infrared Germanium Lens
Optical Spherical Singlet Lenses