Dia21.3mm 450-850nm AR Coated Optical Achromatic Doublet Lens

• Customization: Available
• Usage: Lighting, Medical, Optical, Photography, Astronomy
• Type: Achromatic Doublet Lens
• Transmittance: 90%-95%
• Shape: Cemented
• Material: Optical Glass
• Lenses Color: Clear
• Certification: RoHS, ISO9001, CE, TUV
• Customized: Customized
• Coating: Anti-Reflection
• Transport Package: Carton, Blister, Customized
• Specification: as required
• Trademark: CPG
• Origin: China
• HS Code: 9001909090
• Production Capacity: 2000 Pieces

Product Description

Dia21.3mm 450-850nm AR Coated Optical Achromatic Doublet Lens

 

Specifications:
 

Items	Description
Doublet Lens	Material:	CaF2,Monocrystalline
		Schott N-KZFS2
	Diameter:	21.30+0.00/-0.03mm
	Center thickness:	7.62+/-0.03mm
	ROC1:	51.77037mm CX
	ROC2=ROC3:	16.55034mm DOUBLET
	ROC4:	34.97125mm CX
	Flatness:	3/2.0(0.5)
	Surface quality:	5/3x0.16;C2x0.16;L2x0.02;E2x0.3
	Centerness:	4/3arcmin
	Clear aperture:	S1:>D20.040mm
		S2&S3:>D19.989mm
		S4:>D20.305mm
	Chamfer:	0.1-0.2mmx45deg
	Coating:	S1&S4:AR coating,Rabs<0.75%@450-850nm,AOI:15deg
	Standard:	ISO 10110

Features:

. Diverge incident light
. Reduce spherical aberration

About AR coating:

An antireflective or anti-reflection (AR) coating is a type of optical coating applied to the surface of lenses and other optical devices to reduce reflection. This improves the efficiency of the system since less light is lost. In complex systems such as a telescope, the reduction in reflections also improves the contrast of the image by elimination of stray light. This is especially important in planetary astronomy. In other applications, the primary benefit is the elimination of the reflection itself, such as a coating on eyeglass lenses that makes the eyes of the wearer more visible to others, or a coating to reduce the glint from a covert viewer's binoculars or telescopic sight.

CPG provide AR coatings for different applications, with our own developed coating material, you are surely get a better performance compared with others:
 

Single Wavelength AR Coatings

The simplest interference AR coating consists of a single quarter-wave layer of transparent material whose refractive index is the square root of the substrate's refractive index; this, theoretically, gives zero reflectance at the center wavelength and decreased reflectance for wavelengths in a broad band around the center.


 

Dual Wavelength AR Coatings