Double-Convex Lenses

Product Catalog 2016

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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 Optics Protection

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

Optics Protection

Polymer film First Contact™ is a unique product designed for laser optics protection, preservation and cleaning. For all sorts of optical items it serves as a protection layer from damages during shipping, long term storage, environment changes, etc. and removes all dust and other contamination after the film is removed from the optical surface. It is absolutely safe for almost all types of optics and optical coatings.*

Protects against scratching, abrasion, dirt, and water damage. Also protects against corrosion caused by water vapor, oxygen, and sulfur.
Cleans the surface, removes particulates and organic contaminants.
Leaves no residue.
Leaves no hazardous waste.
Safe to store for up to 4 years (period may be extended depending on storing conditions).
Comes off in one piece.
Does not lift metal from metal films.
Safe with temperatures up to 200° C.
Environmentally friendly

* Protective polymer cannot be used with optical components sensitive to acetate.

Price – 3 EUR per item (price includes coating service and polymer)

If you want to order protective coating please select "Optics Protection" in the catalog list.

Removal instructions:

Removal instructions Removal instructions 2

Holding the sticker slowly peel the film starting from the edge. If necessary place the optic in its corresponding mount prior to removing the film.

Technical information:

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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	4-6 weeks	1-BCX-1-B127	31 $
12.7	2.0	+20	BK7	19.88	-19.88	4-6 weeks	1-BCX-1-C127	31 $
25.4	2.0	+50	BK7	50.6	-50.6	4-6 weeks	1-BCX-1-D254	33 $
25.4	2.0	+25	BK7	24.07	-24.07	4-6 weeks	1-BCX-1-A254	35 $
25.4	2.0	+30	BK7	29.53	-29.53	4-6 weeks	1-BCX-1-B254	35 $
25.4	2.0	+35	BK7	34.86	-34.86	4-6 weeks	1-BCX-1-C254	35 $
12.7	2.0	+15	UVFS	12.81	-12.81	4-6 weeks	1-BCX-2-A127	54 $
12.7	2.0	+20	UVFS	17.56	-17.56	4-6 weeks	1-BCX-2-B127	54 $
12.7	2.0	+25	UVFS	22.23	-22.23	4-6 weeks	1-BCX-2-C127	54 $
25.4	2.0	+30	UVFS	25.99	-25.99	4-6 weeks	1-BCX-2-A254	64 $
25.4	2.0	+50	UVFS	44.79	-44.79	4-6 weeks	1-BCX-2-C254	64 $
25.4	2.0	+40	UVFS	35.48	-35.48	4-6 weeks	1-BCX-2-B254	64 $
12.7	2.0	+12	BK7	11.25	-11.25	From stock	1-BCX-1-A127	31 $