Double Bonded Achromatic Negative Lens

• After-sales Service: 1year
• Warranty: 1year
• Transport Package: The Cartons
• Specification: XSC-711
• Trademark: PDV
• Origin: China Beijing
• Model NO.: XSC-711
• Production Capacity: 1000

Product Description

Product description
The double-glued achromatic negative lens is composed of low refractive index (crown glass) and high refractive index (glass). The paraxial aberrations such as spherical aberration, coma aberration and chromatic aberration are well corrected by computer optimization design, and can be used as Barlow mirror or magnifying mirror to extend the focal length of the telescopic objective.

Universal parameter
Focal length (f')	±2%@587.6nm	Local aperture	0.5
Dimensional tolerance	+0/-0.2	Degree of finish	Level lV
Center thickness	±0.1	Light aperture	>90%p
centrality	3'	Coating film	MgF2 anti-reflectionfilm
Aperture	3

The double-glued achromatic negative lens is composed of low refractive index (crown glass) and high refractive index ( glass). The paraxial aberrations such as spherical aberration, coma aberration and chromatic aberration are well corrected by computer optimization design, and can be used as Barlow mirror or magnifying mirror to extend the focal length of the telescopic objective

model	Diameter(φ)	Focal length(f' )	Back intercept(fb)
XSC-711	25.4	-30	-36.15
XSC-712	25.4	-40	-44.4
XSC-713	25.4	-50	-53.37
XSC-714	25.4	-75	-77.65
XSC-715	25.4	-100	-102.37
XSC-716	25.4	-150	--152.6
Note: The default unit for all specifications above is mm(mm)