Double-Concave Lenses

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Grouped product items
SKU	Specifications	Stock Qty	Price
9007970	Center thickness, mm: 2.00 (±0.05) Centering (ETV): <0.015 mm Protective chamfers: 0.1-0.3 mm x 45 ±10° Clear Aperture: Coatings: AR/AR (R < 1.5%) @ 1064 + 1570 nm, AOI = 0° (over CA) Diameter, mm: 7.00 (+0.00/-0.02) S1 Flatness, PV IR S2 Flatness, PV: 1/4 fringe @ 632.8 nm Material: Schott N-SF57 Power: 2 fringes @ 632.8 nm ROC S1, mm: 39.995 CC ROC2, mm: 46.073 CC S1: > Ø5.2 mm S2: > Ø5.5 mm Surface finish: Surface quality: 10-5 S-D	11	€327.00
9011711	Center thickness, mm: 4.00 (±0.05) Centering: <2 arcmin Protective chamfers: 0.2 + 0.2 mm (FW) x 45° Clear Aperture: Coatings: AR/AR (Ravg < 0.5%) @ 1520 - 1560 nm, AOI = 0° Diameter, mm: 8.00 (+0/-0.02) S1 Flatness, PV IR S2 Flatness, PV: 1.0 fringe @ 633 nm Material: N-SF6 (equivalent) ROC S1, mm: 6.000 (±0.006) CC ROC2, mm: 6.000 (±0.006) CC S1: >Ø5.5 mm S2: >Ø6.5 mm Surface quality: 20-10 S-D	7	€26.00
9300610	AR coatings: Laser line AR coated Centration error: <3 arcmin Clear aperture: >90 Dimensions tolerance, mm: (+0/-0.1) Dimensions, mm: 12.7 Edge thickness, mm: 8 Focal length, mm: -25 Material: UVFS Surface quality, S-D: 40-20 Thickness tolerance, mm: ±0.1 Wavelength, nm: 258+343	2	€90.00
9338603	AR coatings: AR/(R<0.15%)@1064 i0° Center thickness, mm: 2 Comments: CA=6mm Dimensions tolerance, mm: ±0.15 Dimensions, mm: 10 Focal length, mm: -7.5 Material: UVFS (C7980) ROC S1, mm: -7.05 ROC2, mm: -7.05 Thickness tolerance, mm: ±0.05 Wavelength, nm: 1064	2	€32.00
9428802	Clear aperture: 90 Coatings: AR/AR(R<0.2%)@1030, AOI=0° Dimensions tolerance, mm: +0.0/-0.1 Dimensions, mm: 12.7 Edge thickness, mm: 5 Focal length, mm: -12 Material: BK7 Protective chamfers: <0.25 mm x 45° ROC S1, mm: -12.59 ROC S2, mm: -12.59 S1 Flatness, PV IR S2 Flatness, PV: <λ/6 @ 632.8 nm Surface quality, S-D: 40-20 Thickness tolerance, mm: +/-0.1	30	€57.00
9501200	Opticus comment: missing ref	18	€20.00
9503020	Material: equivalent ROC S1, mm: 50.57 (±0.15) ROC2, mm: 17.38 (±0.05)	14	€57.00
9550365 NEW	Centration error: <3 arcmin Clear aperture: >90 % Diameter, mm: 25.4 mm (+0/-0.1 mm) Edge thickness, mm: 5 mm (+/-0.1 mm) Focal length, mm: -20 mm +/-3% @ 632.8 nm Material: UVFS S1 Flatness, PV IR S2 Flatness, PV: Surface quality: 40-20 S-D	1	€30.00
9552515 NEW	AR coatingsS1/S2: R<0,3%@ 1054-1074nm, AOI=0-8deg Center thickness, mm: 3 Centration error: <1 arcmin Chamfer: 0.2 x 45 deg Clear Aperture: 35(7mm S1, 9mm S2) Dimensions tolerance, mm: +0/-0.05 Dimensions, mm: Ø20 Material: N-SF57 ROC S1, mm: 15.0409 +/- 0.2% ROC S2, mm: 37.4539 +/- 0.2% S1 Flatness, PV IR S2 Flatness, PV: <λ/2 @ 632.8 nm Thickness tolerance, mm: ±0.05	2	€30.00
9559005	Coatings: AR/AR(R<0.3%)@700-900 nm. AOI=0deg. S1 Flatness, PV IR S2 Flatness, PV: <λ/4 @ 632.8 nm Material: FS Focal length, mm: -800 ( ±3%) Dimensions, mm: Ø50.8 (+0/-0.2) Surface quality, S-D: 40-20 Clear Aperture: >90 Adhesion and durability: Per MIL-C-675A Edge thickness, mm: >3	1	€95.00
9571307 NEW	ROC S1, mm: 70.141 ROC S2, mm: 8.205826 Protective chamfers: 0.1-0.2 mm x 45° Dimensions, mm: Ø11.0 Clear aperture: 90 AR coatings: AR/AR (<0.2%)@1560-1584, AOI=0-25 deg Centration error: <30 arcsec Center thickness, mm: 3 S1 Flatness, PV IR S2 Flatness, PV: <λ/4 @ 632.8 nm Material: H-ZF7L	2	€30.00
9595259	Dimensions tolerance, mm: +0.0/-0.05 ROC S1, mm: 16.166 (+/-0.2%) Thickness tolerance, mm: (±0.1) Surface quality, S-D: 20-10 S1 Flatness, PV IR S2 Flatness, PV: <2λ PWR, 0.5λ IRR ROC S2, mm: 19.49 (+/-0.2%) Protective chamfers: <0.3 mm x 45° Dimensions, mm: Ø20 Coatings: AR<0,5%@ 1050-1070 (T>99%@ 1064) AOI=0-35 deg Clear aperture: Ø8.7mm,S1;Ø10mm,S2 Centration error: <1arcmin Center thickness, mm: 2 Material: N-SF57HT	6	€73.00
9595269 NEW	Thickness tolerance, mm: (±0.1) Surface quality, S-D: 20-10 ROC S1, mm: 16.765 (+/-0.2%) S1 Flatness, PV IR S2 Flatness, PV: , 0.5λ IRR Coatings: AR<0,5%@ 1050-1070 (T>99%@ 1064) AOI=0-35 deg ROC S2, mm: 98.279 (+/-0.2%) Material: N-SF57HT Dimensions tolerance, mm: +0.0/-0.05 Clear aperture: Ø8.7mm,S1;Ø10mm,S2 Centration error: <1arcmin Protective chamfers: <0.3 mm x 45° Center thickness, mm: 3 Dimensions, mm: Ø20	6	€30.00
9595279 NEW	Thickness tolerance, mm: (±0.1) Surface quality, S-D: 60-40 S1 Flatness, PV IR S2 Flatness, PV: , 0.5λ IRR ROC S2, mm: 39.552 (+/-0.1%) Protective chamfers: <0.3 mm x 45° Material: N-SF57HT Dimensions, mm: Ø60 Dimensions tolerance, mm: +0.0/-0.05 Coatings: AR<0,5%@ 1050-1070 (T>99%@ 1064) AOI=0-35 deg Clear aperture: Ø54mm,S1;Ø58mm,S2 Centration error: <1arcmin Center thickness, mm: 11.3 ROC S1, mm: 75.217 (+/-0.1%) CC	5	€30.00
9595289 NEW	Material: N-SF57HT Thickness tolerance, mm: (±0.1) Surface quality, S-D: 60-40 S1 Flatness, PV IR S2 Flatness, PV: 0.5λ IRR ROC S2, mm: 80.324 (+/-0.2%) ROC S1, mm: 379.834 (+/-0.2%) CC Dimensions, mm: Ø64 Dimensions tolerance, mm: +0.0/-0.05 Coatings: AR<0,5%@ 1050-1070 (T>99%@ 1064) AOI=0-25 deg Clear aperture: Ø61mm,S1;Ø63mm,S2 Centration error: <1arcmin Center thickness, mm: 8.9 Protective chamfers: <0.3 mm x 45°	6	€30.00
9603410	Surface quality, S-D: 40-20 S1 Flatness, PV IR S2 Flatness, PV: <λ/4 @ 632.8 nm ROC S1, mm: 225.205 +/-0.1 Dimensions, mm: Ø22.00 Dimensions tolerance, mm: (+0.00/-0.02) Coatings: BBAR(R<0.5%)@450-680nm, AOI=0° +AR(R<1%)@1064nm,AOI=0° Centration error: <2 arcmin Material: N-SF57HT ROC S2, mm: 225.205 +/-0.1 Center thickness, mm: 3	3	€205.00
9653125 NEW	Comments: AR/AR (R<0.3%) @1064+1570nm AOI=0 deg	2	€30.00
9660186 NEW	Surface quality, S-D: 40-20 S1 Flatness, PV IR S2 Flatness, PV: <λ/4 @ 632.8 nm Protective chamfers: 0.1-0.3 mm x 45° ROC S1, mm: -17.06 (±1%) Material: UVFS (Corning 7980 0F) Focal length, mm: -19 (±3%) Edge thickness, mm: 4.5 (±0.1) ROC S2, mm: -17.06 (±1%) Dimensions, mm: 12.7 (+0/-0.1) Clear aperture: 90	2	€30.00

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Details

The biconcave lenses are used in optical systems in combination with other lenses. These lenses also work as beam expanders, optical character readers, viewers and projection systems.

Lower spherical aberrations than for Plano-Concave lenses
Diverges incident light
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