optical lens

Model:	OEM
Brand:	United Photonics Technology
Origin:	Made In China
Category:	Electronics & Electricity / Electronic Instrument / Optical Lens & Instrument
Label:	Lens , spherical , cylinder
Price:	US $0.1 / pc
Min. Order:	5 pc

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Product Description

Lenses

Lenses have many applications ranging from the simple collection of a laser beam to precision imaging and image transfer. Lenses are classified as single lenses, cylindrical lenses and achromatic lenses. These lenses are made of BK7, fused silica and CaF2. Special focusing systems can be designed by our engineers upon request.

Spherical lens

LENSE TYPE MATERIALS ILLUSTRATION ..

Achromatic Lenses

These lenses are made of BK7, fused silica and CaF2. Special focusing systems can be designed by our engineers upon request. LENSES ..

Cylindrical Lenses

Cylindrical lenses are used to correct astigmatism in the eye and in rangefinders, to produce astigmatism, stretching a point of light into a line, they are widely used in bar code scanning, projectio..

LENSE TYPE	MATERIALS	ILLUSTRATION	PROPERTIES AND APPLICATIONS
Plano-Convex Lens	BK7/ Fused Silica/ Sapphire CaF2/other optical glass		Positive focus length. Most suitable where one conjugate is more than five times the other, e.g. in sensor applications or for use with near collimated light. Also where both conjugates are on the same side of the lens, e.g. as an add-on lens to increase the numerical aperture.
Double-Convex Lens	BK7/ Fused Silica/ Sapphire CaF2/other optical glass		Most suitable where the conjugates are on opposite sides of the lenses and the ratio of the distances is less than 5:1, e.g. as simple image relay components.
Plano-Concave Lens	BK7/ Fused Silica/ Sapphire CaF2/other optical glass		Negative lens with the form most suitable where one conjugate is more than five times the other, e.g. producing divergent light from a collimated input beam.
Double-Concave Lens	BK7/ Fused Silica/ Sapphire CaF2/other optical glass		Negative lens with the form most suitable to producing divergent light or a virtual image, where the input light is converging.
Positive Meniscus Lens	BK7/ Fused Silica/ Sapphire CaF2/other optical glass		These lenses may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations.
Negative Meniscus Lens	BK7/ Fused Silica/ Sapphire CaF2/other optical glass		These lenses may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations.
Mount For Lenses	Black Anodized Aluminum		Used to fix position of lenses.

Specification:

	GENERAL	HIGH PRECISION
Material	N-BK7, CDGM H-K9L, Fused silica, CaF2, Sapphire
Design wavelength	546.07nm
Design index (bk7)	1.51680 for BK7, 1.45846 for Fused Silica
Diameter tolerance	+0.0, 0.15mm	+0.0, 0.05mm
Paraxial focal length	±2%	±0.5%
Centration	<3'	<1'
Clear aperture	80%	90%
Surface quality	60-40 scratch and dig	10-5 scratch and dig
Surface irregularity	< λ/4	< λ/8
Protective bevel	0.25 + 0.25, -0.0mm	0.2 ± 0.1mm

Note for Lens:

(1). Lens made from materials such as N-BK7, Fused Silica, Sapphire, CaF2, Borofloat, or other optical glass supplied by Schott and Chinese CDGM are available upon request.

(2). Custom-made Lens at any size from Φ3.0mm to Φ200mm clear aperture are available. Besides round, Lens at shape of square are available.

(3). 90% clear aperture is available upon request.

(4). Better bevel is available upon request.