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TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More

NIR II Coated Double-Convex (DCX) Lenses

AR Coated to Provide <0.7% Reflectance per Surface for 750 - 1550nm
Minimize Aberrations Including Spherical and Coma
UV Fused Silica DCX Lenses Available
Other Coating Options Available: Uncoated, MgF₂, VIS 0°, NIR I, VIS-EXT, VIS-NIR, and YAG-BBAR

TECHSPEC® NIR II Coated Double-Convex (DCX) Lenses, also referred to as bi-convex lenses, have two positive, symmetrical faces with equal radii on both sides. These lenses are generally recommended for finite imaging applications with a conjugate ratio (ratio between object distance and image distance) between 0.2 and 5. At a conjugate ratio of 1, aberrations such as spherical aberration, chromatic aberration, coma, and distortion are minimized or cancelled due to the symmetric lens design. TECHSPEC® NIR II Coated Double-Convex Lenses are available in a variety of substrates and coating options for the visible and NIR spectra.

Common Specifications

Coating:

NIR II (750-1550nm)

Coating Specification:

R_abs ≤1.5% @ 750 - 800nm
R_abs ≤1.0% @ 800 - 1550nm
R_avg ≤0.7% @ 750 - 1550nm

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1.00

Wavelength Range (nm):

750 - 1550

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Products

Dia. (mm)	BFL (mm)	EFL (mm)	Coating	Substrate	Stock Number	Price	Buy
3.00 4.50 5.00 6.00 9.00 10.00 12.00 15.00 18.00 20.00 25.00 30.00 40.00 50.00	10.79 11.18 117.67 118.34 12.56 123.84 13.68 13.8 14.33 147.00 148.88 16.69 16.81 17.12 17.26 173.94 18.55 18.99 19.16 19.5 197.35 198.33 198.35 2.21 21.29 22.47 22.65 23.13 23.82 23.86 24.16 24.5 248.37 25.25 26.08 28.12 28.2 28.31 28.75 28.82 29.17 29.23 3.70 3.78 32.81 34.59 34.90 35.15 35.33 37.54 38.21 38.44 39.16 4.19 44.00 44.17 45.30 47.09 47.82 48.29 48.84 49.00 49.17 5.19 5.37 57.1 58.33 58.67 59.00 7.90 71.07 73.35 73.84 77.32 78.67 8.16 8.22 8.46 8.89 9.31 96.65 97.33 98.34 98.95 99.17	3.00 4.50 6.00 9.00 5.00 10.00 15.00 20.00 25.00 12.00 18.00 24.00 30.00 36.00 13.50 27.00 45.00 40.00 50.00 100.00 48.00 72.00 22.50 60.00 80.00 35.00 75.00 125.00 150.00 175.00 200.00 120.00 250.00	NIR II (750-1550nm)	N-BK7 N-LASF44 N-SF11 N-SF5		34.85 35.70 37.40 38.25 38.89 39.31 43.77 48.88 49.73 54.82 56.95
3.00 3.00	2.21 2.21	3.00 3.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF5 N-SF5	#67-590	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
3.00 3.00	3.78 3.78	4.50 4.50	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-591	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
3.00 3.00	5.37 5.37	6.00 6.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-592	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
3.00 3.00	8.46 8.46	9.00 9.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-593	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
4.50 4.50	3.70 3.70	4.50 4.50	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-LASF44 N-LASF44	#67-594	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
4.50 4.50	8.16 8.16	9.00 9.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-595	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
5.00 5.00	4.19 4.19	5.00 5.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF5 N-SF5	#67-596	43.77 £43.77 Qty 10+ £39.31 Request Quote	3-4 days ×
5.00 5.00	9.31 9.31	10.00 10.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-597	43.77 £43.77 Qty 10+ £39.31 Request Quote	3-4 days ×
5.00 5.00	14.33 14.33	15.00 15.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-598	43.77 £43.77 Qty 10+ £39.31 Request Quote	Contact Us ×
5.00 5.00	19.5 19.5	20.00 20.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-599	43.77 £43.77 Qty 10+ £39.31 Request Quote	In Stock ×
5.00 5.00	24.5 24.5	25.00 25.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-600	43.77 £43.77 Qty 10+ £39.31 Request Quote	3-4 days ×
6.00 6.00	5.19 5.19	6.00 6.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF5 N-SF5	#67-601	34.85 £34.85 Qty 10+ £31.24 Request Quote	3-4 days ×
6.00 6.00	8.22 8.22	9.00 9.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-602	34.85 £34.85 Qty 10+ £31.24 Request Quote	3-4 days ×
6.00 6.00	11.18 11.18	12.00 12.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-603	34.85 £34.85 Qty 10+ £31.24 Request Quote	3-4 days ×
6.00 6.00	17.26 17.26	18.00 18.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-604	34.85 £34.85 Qty 10+ £31.24 Request Quote	3-4 days ×
6.00 6.00	23.13 23.13	24.00 24.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-605	34.85 £34.85 Qty 10+ £31.24 Request Quote	3-4 days ×
6.00 6.00	29.23 29.23	30.00 30.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-606	34.85 £34.85 Qty 10+ £31.24 Request Quote	3-4 days ×
6.00 6.00	35.33 35.33	36.00 36.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-607	34.85 £34.85 Qty 10+ £31.24 Request Quote	3-4 days ×
9.00 9.00	7.90 7.90	9.00 9.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF5 N-SF5	#67-608	35.70 £35.70 Qty 10+ £32.09 Request Quote	In Stock ×
9.00 9.00	12.56 12.56	13.50 13.50	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-609	35.70 £35.70 Qty 10+ £32.09 Request Quote	3-4 days ×
9.00 9.00	17.12 17.12	18.00 18.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-610	35.70 £35.70 Qty 10+ £32.09 Request Quote	3-4 days ×
9.00 9.00	26.08 26.08	27.00 27.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-611	35.70 £35.70 Qty 10+ £32.09 Request Quote	3-4 days ×
9.00 9.00	35.15 35.15	36.00 36.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-612	35.70 £35.70 Qty 10+ £32.09 Request Quote	3-4 days ×
9.00 9.00	44.17 44.17	45.00 45.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-613	35.70 £35.70 Qty 10+ £32.09 Request Quote	3-4 days ×
10.00 10.00	8.89 8.89	10.00 10.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF5 N-SF5	#67-614	35.70 £35.70 Qty 10+ £32.09 Request Quote	3-4 days ×
10.00 10.00	13.8 13.8	15.00 15.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-615	35.70 £35.70 Qty 10+ £32.09 Request Quote	3-4 days ×
10.00 10.00	19.16 19.16	20.00 20.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-616	35.70 £35.70 Qty 10+ £32.09 Request Quote	In Stock ×
10.00 10.00	24.16 24.16	25.00 25.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-617	35.70 £35.70 Qty 10+ £32.09 Request Quote	Contact Us ×
10.00 10.00	29.17 29.17	30.00 30.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-618	35.70 £35.70 Qty 10+ £32.09 Request Quote	3-4 days ×
10.00 10.00	39.16 39.16	40.00 40.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-619	35.70 £35.70 Qty 10+ £32.09 Request Quote	In Stock ×
10.00 10.00	49.17 49.17	50.00 50.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-620	35.70 £35.70 Qty 10+ £32.09 Request Quote	3-4 days ×
10.00 10.00	99.17 99.17	100.00 100.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-621	35.70 £35.70 Qty 10+ £32.09 Request Quote	In Stock ×
12.00 12.00	10.79 10.79	12.00 12.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF5 N-SF5	#67-622	38.25 £38.25 Qty 10+ £34.42 Request Quote	Contact Us ×
12.00 12.00	16.81 16.81	18.00 18.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-623	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
12.00 12.00	22.65 22.65	24.00 24.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#33-393	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
12.00 12.00	28.75 28.75	30.00 30.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-625	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
12.00 12.00	34.90 34.90	36.00 36.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-626	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
12.00 12.00	47.09 47.09	48.00 48.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-627	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
12.00 12.00	71.07 71.07	72.00 72.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-628	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
15.00 15.00	13.68 13.68	15.00 15.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF11 N-SF11	#67-629	38.25 £38.25 Qty 10+ £34.42 Request Quote	3-4 days ×
15.00 15.00	18.99 18.99	20.00 20.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF11 N-SF11	#67-630	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
15.00 15.00	21.29 21.29	22.50 22.50	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF11 N-SF11	#67-631	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
15.00 15.00	23.82 23.82	25.00 25.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-632	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
15.00 15.00	28.82 28.82	30.00 30.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-633	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
15.00 15.00	44.00 44.00	45.00 45.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-634	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
15.00 15.00	49.00 49.00	50.00 50.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-635	37.40 £37.40 Qty 10+ £33.57 Request Quote	3-4 days ×
15.00 15.00	59.00 59.00	60.00 60.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-636	37.40 £37.40 Qty 10+ £33.57 Request Quote	Contact Us ×
18.00 18.00	16.69 16.69	18.00 18.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF11 N-SF11	#67-637	38.25 £38.25 Qty 10+ £34.42 Request Quote	3-4 days ×
18.00 18.00	25.25 25.25	27.00 27.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-638	38.25 £38.25 Qty 10+ £34.42 Request Quote	3-4 days ×
18.00 18.00	34.59 34.59	36.00 36.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-639	38.25 £38.25 Qty 10+ £34.42 Request Quote	3-4 days ×
20.00 20.00	18.55 18.55	20.00 20.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF11 N-SF11	#67-640	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
20.00 20.00	23.86 23.86	25.00 25.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF11 N-SF11	#67-641	38.89 £38.89 Qty 10+ £34.85 Request Quote	In Stock ×
20.00 20.00	28.2 28.2	30.00 30.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-642	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
20.00 20.00	38.44 38.44	40.00 40.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-643	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
20.00 20.00	48.84 48.84	50.00 50.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-644	38.89 £38.89 Qty 10+ £34.85 Request Quote	Contact Us ×
20.00 20.00	58.67 58.67	60.00 60.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-645	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
20.00 20.00	78.67 78.67	80.00 80.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-646	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
25.00 25.00	22.47 22.47	25.00 25.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF5 N-SF5	#67-647	39.31 £39.31 Qty 10+ £35.27 Request Quote	3-4 days ×
25.00 25.00	28.31 28.31	30.00 30.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF5 N-SF5	#67-648	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
25.00 25.00	32.81 32.81	35.00 35.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-649	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
25.00 25.00	38.21 38.21	40.00 40.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-650	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
25.00 25.00	48.29 48.29	50.00 50.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-651	38.89 £38.89 Qty 10+ £34.85 Request Quote	In Stock ×
25.00 25.00	73.84 73.84	75.00 75.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-652	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
25.00 25.00	98.95 98.95	100.00 100.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-653	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
25.00 25.00	123.84 123.84	125.00 125.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-654	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
25.00 25.00	148.88 148.88	150.00 150.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-655	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
25.00 25.00	173.94 173.94	175.00 175.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-656	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
25.00 25.00	198.35 198.35	200.00 200.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#33-399	38.89 £38.89 Qty 10+ £34.85 Request Quote	3-4 days ×
30.00 30.00	28.12 28.12	30.00 30.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF11 N-SF11	#67-659	49.73 £49.73 Qty 10+ £44.63 Request Quote	3-4 days ×
30.00 30.00	47.82 47.82	50.00 50.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-660	48.88 £48.88 Qty 10+ £44.20 Request Quote	3-4 days ×
30.00 30.00	58.33 58.33	60.00 60.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-661	48.88 £48.88 Qty 10+ £44.20 Request Quote	3-4 days ×
30.00 30.00	73.35 73.35	75.00 75.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-662	48.88 £48.88 Qty 10+ £44.20 Request Quote	3-4 days ×
30.00 30.00	98.34 98.34	100.00 100.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-663	48.88 £48.88 Qty 10+ £44.20 Request Quote	3-4 days ×
30.00 30.00	118.34 118.34	120.00 120.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-664	48.88 £48.88 Qty 10+ £44.20 Request Quote	In Stock ×
40.00 40.00	37.54 37.54	40.00 40.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF11 N-SF11	#67-666	54.82 £54.82 Qty 10+ £49.30 Request Quote	Contact Us ×
40.00 40.00	57.1 57.1	60.00 60.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-667	54.82 £54.82 Qty 10+ £49.30 Request Quote	Contact Us ×
40.00 40.00	77.32 77.32	80.00 80.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#33-424	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
40.00 40.00	97.33 97.33	100.00 100.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#33-411	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
40.00 40.00	117.67 117.67	120.00 120.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-670	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
40.00 40.00	197.35 197.35	200.00 200.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#33-418	54.82 £54.82 Qty 10+ £49.30 Request Quote	3-4 days ×
50.00 50.00	45.30 45.30	50.00 50.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-SF11 N-SF11	#67-673	56.95 £56.95 Qty 10+ £51.42 Request Quote	3-4 days ×
50.00 50.00	96.65 96.65	100.00 100.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-674	56.95 £56.95 Qty 10+ £51.42 Request Quote	3-4 days ×
50.00 50.00	147.00 147.00	150.00 150.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-675	56.95 £56.95 Qty 10+ £51.42 Request Quote	3-4 days ×
50.00 50.00	198.33 198.33	200.00 200.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-676	56.95 £56.95 Qty 10+ £51.42 Request Quote	3-4 days ×
50.00 50.00	248.37 248.37	250.00 250.00	NIR II (750-1550nm) NIR II (750-1550nm) Other Coating Options ×	N-BK7 N-BK7	#67-677	56.95 £56.95 Qty 10+ £51.42 Request Quote	3-4 days ×

Technical Information

N-BK7
	Typical transmission of a 3mm thick, uncoated N-BK7 window across the UV - NIR spectra. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with MgF2 (400-700nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg ≤ 1.75% @ 400 - 700nm (N-BK7) Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with VIS-EXT (350-700nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg≤ 0.5% @ 350 - 700nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with VIS-NIR (400-1000nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs≤ 0.25% @ 880nm R_avg≤ 1.25% @ 400 - 870nm R_avg≤ 1.25% @ 890 - 1000nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with VIS 0° (425-675nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg≤ 0.4% @ 425 - 675nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with YAG-BBAR (500-1100nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs ≤ 0.25% @ 532nm R_abs ≤ 0.25% @ 1064nm R_avg≤ 1.0% @ 500 - 1100nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with NIR I (600 - 1050nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_avg≤ 0.5% @ 600 - 1050nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data
	Typical transmission of a 3mm thick N-BK7 window with NIR II (750 - 1550nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: R_abs ≤ 1.5% @ 750 - 800nm R_abs ≤ 1.0% @ 800 - 1550nm R_avg≤ 0.7% @ 750 - 1550nm Data outside this range is not guaranteed and is for reference only. Click Here to Download Data

Accessories

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NIR II Coated Plano-Convex (PCX) Lenses

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Optical Cleaning

Resources

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Anti-Reflection (AR) Coatings

Anti-reflection (AR) coatings are applied to optical components to increase throughput and reduce hazards caused by back-reflections.

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An Introduction to Optical Coatings

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Understanding Optical Specifications

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NIR (Near Infrared)

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VIS/NIR Coating

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The Correct Material for Infrared (IR) Applications

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Infrared (IR) Spectrum

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Future of Spherical Lenses

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UV vs. IR Grade Fused Silica

UV grade fused silica is ideal for UV and visible applications, but IR grade fused silica has better transmission in the IR due to a lack of OH- impurities.

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Hyperspectral & Multispectral Imaging – TRENDING IN OPTICS: EPISODE 7

Hyperspectral and multispectral imaging are imaging technologies that capture information from a broader portion of the electromagnetic spectrum.

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You offer many substrates for UV and IR applications. How do I know which is best for me?

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Edge-Blackening

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Geometrical Optics 101: Paraxial Ray Tracing Calculations

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Understanding Optical Lens Geometries

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Precision Tolerances for Spherical Lenses

Optical lenses require very precise tolerances. Learn more about tolerances for spherical lenses at Edmund Optics.

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Keys to Cost Effective Optical Design and Tolerancing

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How do I clean my lenses?

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Is it possible to find Plano-Concave (PCV) or Double Concave (DCV) lenses where the diameter is greater than the focal length?

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How does reversing the orientation of a PCX lens affect the EFL and BFL in a setup?

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Double-Concave (DCV) Lens

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Double-Convex (DCX) Lens

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Meniscus Lens

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Plano-Concave (PCV) Lens

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Plano-Convex (PCX) Lens

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Advantages of Using Meniscus Lenses in Infrared Applications

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Are standard beam expanders not meeting your application requirements? Learn how to design your own beam expander using stock optics at Edmund Optics.

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Rapid Optical Prototyping

Quickly Respond to Collapsing Product Lifecycles

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Modifying Stock Optics Tip #3: Turn A Sphere Into An Asphere

Join Andrew Fisher, Manufacturing R&D Engineer at Edmund Optics, as he discusses some tips for modifying stock optical components to fit your application's needs.

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I am looking to prototype an illumination system. My objective is to use a small halogen filament bulb and end up with a beam of light. What would be the best lens or lens combination to give me this projected spot of light?

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What is the difference between the effective focal length and the back focal length?

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Back Focal Length (BFL)

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Field Curvature

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Sag

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Optical Glass

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Aberrations

Need help understanding aberration theory? Learn about a few fundamental concepts to help clarify your understanding at Edmund Optics.

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The Airy Disk and Diffraction Limit

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Conjugate Distance

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Épaisseur de bord

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Distance focale effective (EFL)

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Finite/Finite Conjugate

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How to Determine Magnification of an Optical Lens Setup

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Understanding Collimation to Determine Optical Lens Focal Length

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Introduction to Basic Ray Optics

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Integration of Optical Systems

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Edmund Optics Global Manufacturing Facilities

Edmund Optics® (EO) manufactures millions of precision optical components and subassemblies every year in our 5 global manufacturing facilities.

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Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

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Clear Aperture (CA)

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Refraction

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