Double-Convex Lenses

Product Catalog 2017

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Double-Convex Lenses

Material	BK7, FS, UVFS, CaF2, ZnSe, Si, Ge
Diameter tolerance	+0.0/-0.1 mm
Thickness tolerance	±0.1 mm
Clear aperture	>90%
Focal Length Tolerance	±3 %
Design wavelength	632.8 nm
Surface quality	40-20 S-D
Surface figure	<λ/4 @ 632.8 nm
Centration error	<3 arcmin
Protective chamfers	<0.25 mm x 45°
Coatings	Available on request

Price list

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Attention! You can customise this product to your needs.

Description Features Tables Metrology

Biconvex lenses are used as magnifiers, objectives, condensing systems. Since both surfaces contribute to the power of biconvex lenses, they have shorter focal length than PCX lenses of equal diameter and surface radius. Under customer request anti-reflection or other types of coatings can applied.

	Converges incident light
	Lower spherical aberrations than for Plano-Convex lenses
	Ideal for Experimenting and Prototyping Applications

Properties (Diameter D, Focal length L)

D, mm	D, Inches	L Minimal, mm	L Maximal, mm
12,7	0.5	12	10.000
25,4	1	25	10.000
38,1	1.5	40	10.000
50,8	2	50	10.000
76,2	3	75	10.000

Altechna metrology lab applies following product inspection:

Visual inspection – surface quality evaluation according to MIL 13830 and ISO 10110 standards

Dimensions – measurement of geometrical dimensions, as diameter, thickness, etc.

Radius of Curvature (Spherometer)*

Effective Focal Length (Spherometer)

Centering (Centration unit)

Irregularity (Interferometer)

Wavefront distortion (Interferometer)

*(…) used equipment

Order your item

Diameter, mm	Edge Thickness, mm	Focal length, mm	Material	ROC1, mm	ROC2, mm	Delivery	Product ID	Price	Action

12.7	2.0	+15	BK7	14.57	-14.57	Request	1-BCX-1-B127	Request	REQ
12.7	2.0	+20	BK7	19.88	-19.88	Request	1-BCX-1-C127	Request	REQ
25.4	2.0	+25	BK7	24.07	-24.07	Request	1-BCX-1-A254	Request	REQ
25.4	2.0	+30	BK7	29.53	-29.53	Request	1-BCX-1-B254	Request	REQ
25.4	2.0	+35	BK7	34.86	-34.86	Request	1-BCX-1-C254	Request	REQ
25.4	2.0	+50	BK7	50.6	-50.6	Request	1-BCX-1-D254	Request	REQ
12.7	2.0	+15	UVFS	12.81	-12.81	Request	1-BCX-2-A127	Request	REQ
12.7	2.0	+20	UVFS	17.56	-17.56	Request	1-BCX-2-B127	Request	REQ
12.7	2.0	+25	UVFS	22.23	-22.23	Request	1-BCX-2-C127	Request	REQ
25.4	2.0	+30	UVFS	25.99	-25.99	Request	1-BCX-2-A254	Request	REQ
25.4	2.0	+50	UVFS	44.79	-44.79	Request	1-BCX-2-C254	Request	REQ
25.4	2.0	+40	UVFS	35.48	-35.48	Request	1-BCX-2-B254	Request	REQ
12.7	2.0	+12	BK7	11.25	-11.25	From stock	1-BCX-1-A127	Request	REQ