N-BK7 Plano-Convex Lenses (Uncoated) — GLA11-N

From $18 USD

Product description

Plano-convex lenses have one flat surface and one convex surface, with a positive focal length. They can focus collimated light, collimate a point source or reduce the divergence of a beam.

GLA11 standard lenses use N-BK7 glass and suit infinite- and finite-conjugate applications. N-BK7 has a nominal refractive index of 1.517 and an Abbe number of 64.17. Select UV fused silica instead when its UV transmission or lower thermal expansion is required.

To reduce spherical aberration when focusing a collimated beam, orient the curved surface toward the incoming light. For collimating a point source, orient the flat surface toward the source.

Plano-convex lens geometry: diameter, thickness, focal length and curvature radius — Schematic
Dimensions in mm unless otherwise stated.

GLA11 standard lenses are available uncoated or with four broadband antireflection coatings: A (350–700 nm), B (650–1100 nm), C (1050–1700 nm) and AB (400–1100 nm). Special wavelength and material requirements, including 532 nm, 808 nm, 1064 nm, 400–700 nm and 650–1200 nm, can be discussed through a custom quotation.

An uncoated glass surface reflects approximately 4% of normally incident light. Antireflection coatings reduce surface reflection, improve transmission and help limit ghost reflections in systems with multiple optical elements.

For mounting, select a holder appropriate to the lens diameter and curvature. The referenced fixed lens mounts use SM05 (0.535″-40), SM1 (1.035″-40) or SM2 (2.035″-40) threads; MLNR-style mounts provide additional retaining-ring tool clearance. Mounts and other components are separate from the lens.

The schematic is for reference only and must not be used as a manufacturing drawing. Use the individual model specifications and model drawing when selecting a lens.

General specifications

Standard N-BK7 models; individual model specifications take precedence.

Material: N-BK7

Surface irregularity: λ/4 @632.8nm

Design wavelength: 587.6 nm

Surface quality (scratch-dig): 40-20

Surface flatness: λ/2

Spherical surface power: 3λ/2

Diameter tolerance: +0.0 / -0.1 mm

Thickness tolerance: ±0.1 mm

Focal length tolerance: ±1%

Centration: <3 arcmin

Refractive index: 1.517

Abbe number: v = 64.17

Clear aperture: >90% of diameter

Chamfer: 0.2mm×45°

Wavelength range: Uncoated: 350 nm - 2.0 μm

Available specifications

USD unit prices. Shipping, taxes and dispatch timing are confirmed with your quotation. Select models and quantities to build your quote list.

MaterialDiameter (mm)Focal length (mm)Center thickness (mm)Edge thickness (mm)Back focal length (mm)Radius of curvature (mm)Coating Search model

120 models

Dia. = diameter; CT = center thickness; ET = edge thickness; BFL = back focal length. Units remain shown in each heading.

										Quote
GLA11-025B-350	N-BK7	25.4	350	2.5	2.1	348.4	180.9	Uncoated	$25	Quantity for GLA11-025B-350

GLA11-025B-045	N-BK7	25.4	45	5.2	1.43	41.57	23.26	Uncoated	$22	Quantity for GLA11-025B-045

GLA11-004-015	N-BK7	4	15	1.8	1.5	13.61	7.75	Uncoated	$27	Quantity for GLA11-004-015

GLA11-006-010	N-BK7	6	10	2.5	1.5	8.35	5.15	Uncoated	$23	Quantity for GLA11-006-010

GLA11-006-012	N-BK7	6	12	2.3	1.5	10.48	6.18	Uncoated	$21	Quantity for GLA11-006-012

GLA11-006-015	N-BK7	6	15	2.1	1.5	13.61	7.73	Uncoated	$21	Quantity for GLA11-006-015

GLA11-006-030	N-BK7	6	30	1.8	1.5	28.81	15.45	Uncoated	$21	Quantity for GLA11-006-030

GLA11-009-012	N-BK7	9	12	3.4	1.5	9.76	6.18	Uncoated	$24	Quantity for GLA11-009-012

GLA11-009-020	N-BK7	9	20	2.5	1.5	18.35	10.3	Uncoated	$21	Quantity for GLA11-009-020

GLA11-010-010	N-BK7	10	10	4.8	1.1	6.8	5.191	Uncoated	$18	Quantity for GLA11-010-010

GLA11-010-015	N-BK7	10	15	2.9	1.1	13.1	7.753	Uncoated	$18	Quantity for GLA11-010-015

GLA11-012-015	N-BK7	12.7	15	5.1	1.8	11.63	7.73	Uncoated	$24	Quantity for GLA11-012-015

GLA11-012-020	N-BK7	12.7	20	4	1.8	17.36	10.3	Uncoated	$23	Quantity for GLA11-012-020

GLA11-012-025	N-BK7	12.7	25	3.5	1.8	22.69	12.88	Uncoated	$22	Quantity for GLA11-012-025

GLA11-012-030	N-BK7	12.7	30	3.2	1.8	27.89	15.45	Uncoated	$21	Quantity for GLA11-012-030

GLA11-012-038	N-BK7	12.7	38.1	3	2	36.1	19.69	Uncoated	$18	Quantity for GLA11-012-038

GLA11-012-040	N-BK7	12.7	40	2.8	1.8	38.15	20.6	Uncoated	$21	Quantity for GLA11-012-040

GLA11-012-050	N-BK7	12.7	50	2.6	1.8	48.28	25.75	Uncoated	$21	Quantity for GLA11-012-050

GLA11-012-075	N-BK7	12.7	75	2.38	1.8	74.75	38.63	Uncoated	$25	Quantity for GLA11-012-075

GLA11-012-100	N-BK7	12.7	100	2.22	1.8	98.2	51.51	Uncoated	$21	Quantity for GLA11-012-100

GLA11-012-125	N-BK7	12.7	125	2.3	1.8	124.6	64.39	Uncoated	$25	Quantity for GLA11-012-125

GLA11-012-150	N-BK7	12.7	150	2	1.8	148.6	77.5	Uncoated	$25	Quantity for GLA11-012-150

GLA11-012-175	N-BK7	12.7	175	2.2	1.8	174.421	90.14	Uncoated	$25	Quantity for GLA11-012-175

GLA11-012-200	N-BK7	12.7	200	2	1.8	198.6	103.36	Uncoated	$25	Quantity for GLA11-012-200

GLA11-012-250	N-BK7	12.7	250	2.15	1.8	249.169	128.77	Uncoated	$25	Quantity for GLA11-012-250

GLA11-012-300	N-BK7	12.7	300	2.13	2	298.6	155.04	Uncoated	$25	Quantity for GLA11-012-300

GLA11-012-500	N-BK7	12.7	500	2.07	2	498.8	259.4	Uncoated	$25	Quantity for GLA11-012-500

GLA11-018-020	N-BK7	18	20	7.1	1.8	15.31	10.3	Uncoated	$25	Quantity for GLA11-018-020

GLA11-018-025	N-BK7	18	25	5.5	1.8	21.37	12.88	Uncoated	$24	Quantity for GLA11-018-025

GLA11-018-030	N-BK7	18	30	4.7	1.8	26.9	15.45	Uncoated	$23	Quantity for GLA11-018-030

GLA11-018-040	N-BK7	18	40	3.8	1.8	35.02	20.67	Uncoated	$19	Quantity for GLA11-018-040

GLA11-018-050	N-BK7	18	50	3.4	1.8	47.76	25.75	Uncoated	$23	Quantity for GLA11-018-050

GLA11-018-060	N-BK7	18	60	3.1	1.8	55.95	31	Uncoated	$19	Quantity for GLA11-018-060

GLA11-018-065	N-BK7	18	65	3	1.8	61.12	33.6	Uncoated	$19	Quantity for GLA11-018-065

GLA11-018-070	N-BK7	18	70	2.9	1.8	66.24	36.76	Uncoated	$19	Quantity for GLA11-018-070

GLA11-020-025	N-BK7	20	25	6	1.26	21.04	12.92	Uncoated	$19	Quantity for GLA11-020-025

GLA11-020-040	N-BK7	20	40	4.6	2	37	20.679	Uncoated	$19	Quantity for GLA11-020-040

GLA11-020-060	N-BK7	20	60	3.7	2	57.6	31.009	Uncoated	$19	Quantity for GLA11-020-060

GLA11-020-080	N-BK7	20	80	3.2	2	77.9	41.344	Uncoated	$19	Quantity for GLA11-020-080

GLA11-020-100	N-BK7	20	100	3	2	98	51.686	Uncoated	$19	Quantity for GLA11-020-100

GLA11-025-025	N-BK7	25	25.4	11.7	2.5	17.68	13.08	Uncoated	$22	Quantity for GLA11-025-025

GLA11-025-050	N-BK7	25	50	5.3	2.07	46.5	25.75	Uncoated	$25	Quantity for GLA11-025-050

GLA11-025-075	N-BK7	25	75	4.1	2.02	72.29	38.63	Uncoated	$24	Quantity for GLA11-025-075

GLA11-025-100	N-BK7	25	100	3.6	2.06	97.62	51.51	Uncoated	$24	Quantity for GLA11-025-100

GLA11-025-200	N-BK7	25	200	2.8	2.04	198.15	103.02	Uncoated	$23	Quantity for GLA11-025-200

GLA11-025B-025	N-BK7	25.4	25.4	11.7	1.8	17.68	13.08	Uncoated	$22	Quantity for GLA11-025B-025

GLA11-025B-030	N-BK7	25.4	30	8.6	2	24.32	15.45	Uncoated	$25	Quantity for GLA11-025B-030

GLA11-025B-035	N-BK7	25.4	35	7.2	2	30.25	18.03	Uncoated	$24	Quantity for GLA11-025B-035

GLA11-025B-040	N-BK7	25.4	40	6.4	2	35.78	20.6	Uncoated	$24	Quantity for GLA11-025B-040

GLA11-025B-050	N-BK7	25.4	50	5.3	2	46.5	25.75	Uncoated	$23	Quantity for GLA11-025B-050

GLA11-025B-060	N-BK7	25.4	60	4.7	2	56.9	30.91	Uncoated	$23	Quantity for GLA11-025B-060

GLA11-025B-075	N-BK7	25.4	75	4.1	2	72.29	38.63	Uncoated	$23	Quantity for GLA11-025B-075

GLA11-025B-085	N-BK7	25.4	85	4.3	2.42	82.17	43.93	Uncoated	$22	Quantity for GLA11-025B-085

GLA11-025B-100	N-BK7	25.4	100	3.6	2	97.62	51.51	Uncoated	$24	Quantity for GLA11-025B-100

GLA11-025B-125	N-BK7	25.4	125	3.3	2	122.82	64.39	Uncoated	$24	Quantity for GLA11-025B-125

GLA11-025B-150	N-BK7	25.4	150	3.1	2	147.95	77.26	Uncoated	$23	Quantity for GLA11-025B-150

GLA11-025B-175	N-BK7	25.4	175	2.9	2	173.09	90.14	Uncoated	$23	Quantity for GLA11-025B-175

GLA11-025B-200	N-BK7	25.4	200	2.8	2	198.15	103.02	Uncoated	$22	Quantity for GLA11-025B-200

GLA11-025B-250	N-BK7	25.4	250	2.6	2	248.28	128.77	Uncoated	$22	Quantity for GLA11-025B-250

GLA11-025B-300	N-BK7	25.4	300	2.5	2	298.35	154.53	Uncoated	$22	Quantity for GLA11-025B-300

GLA11-025B-350	N-BK7	25.4	350	2.5	2.1	348.4	180.9	Uncoated	$25	Quantity for GLA11-025B-350

GLA11-025B-400	N-BK7	25.4	400	2.4	2	398.42	206.04	Uncoated	$22	Quantity for GLA11-025B-400

GLA11-025B-500	N-BK7	25.4	500	2.3	2	498.48	257.55	Uncoated	$22	Quantity for GLA11-025B-500

GLA11-025B-600	N-BK7	25.4	600	2.2	1.93	596.32523	310.08	Uncoated	$25	Quantity for GLA11-025B-600

GLA11-025B-750	N-BK7	25.4	750	2.2	2	748.55	386.32	Uncoated	$22	Quantity for GLA11-025B-750

GLA11-025B-1000	N-BK7	25.4	1000	2.2	2	998.55	515.09	Uncoated	$22	Quantity for GLA11-025B-1000

GLA11-025B-2000	N-BK7	25.4	2000	2.1	2	1998.66	1037	Uncoated	$34	Quantity for GLA11-025B-2000

GLA11-030-040	N-BK7	30	40	9	2.5	34.06	20.6	Uncoated	$32	Quantity for GLA11-030-040

GLA11-030-050	N-BK7	30	50	7.3	2.5	45.18	25.75	Uncoated	$30	Quantity for GLA11-030-050

GLA11-030-060	N-BK7	30	60	6.4	2.5	55.8	31.009	Uncoated	$28	Quantity for GLA11-030-060

GLA11-030-075	N-BK7	30	75	5.5	2.5	71.37	38.63	Uncoated	$30	Quantity for GLA11-030-075

GLA11-030-100	N-BK7	30	100	4.7	2.5	96.9	51.51	Uncoated	$30	Quantity for GLA11-030-100

GLA11-030-120	N-BK7	30	120	4.3	2.5	117.16	61.81	Uncoated	$28	Quantity for GLA11-030-120

GLA11-030-150	N-BK7	30	150	3.1	1.6	147.95	77.26	Uncoated	$30	Quantity for GLA11-030-150

GLA11-030-200	N-BK7	30	200	2.8	1.7	198.15	103.02	Uncoated	$30	Quantity for GLA11-030-200

GLA11-030-250	N-BK7	30	250	2.6	1.7	248.28	128.77	Uncoated	$30	Quantity for GLA11-030-250

GLA11-030-300	N-BK7	30	300	2.5	1.8	298.35	154.53	Uncoated	$30	Quantity for GLA11-030-300

GLA11-030-500	N-BK7	30	500	2.3	1.8	498.48	257.55	Uncoated	$30	Quantity for GLA11-030-500

GLA11-050-060	N-BK7	50.8	60	16.3	3	49.24	30.91	Uncoated	$47	Quantity for GLA11-050-060

GLA11-050-075	N-BK7	50.8	75	12.5	3	66.75	38.63	Uncoated	$47	Quantity for GLA11-050-075

GLA11-050-100	N-BK7	50.8	100	9.7	3	93.6	51.51	Uncoated	$35	Quantity for GLA11-050-100

GLA11-050-125	N-BK7	50.8	125	8.2	3	119.59	64.39	Uncoated	$35	Quantity for GLA11-050-125

GLA11-050-150	N-BK7	50.8	150	7.3	3	145.18	77.26	Uncoated	$35	Quantity for GLA11-050-150

GLA11-050-175	N-BK7	50.8	175	6.7	3	170.58	90.14	Uncoated	$51	Quantity for GLA11-050-175

GLA11-050-200	N-BK7	50.8	200	6.2	3	195.91	103.02	Uncoated	$35	Quantity for GLA11-050-200

GLA11-050-250	N-BK7	50.8	250	5.5	3	246.37	128.77	Uncoated	$51	Quantity for GLA11-050-250

GLA11-050-300	N-BK7	50.8	300	5.1	3	296.63	154.53	Uncoated	$37	Quantity for GLA11-050-300

GLA11-050-400	N-BK7	50.8	400	4.6	3	396.96	206.04	Uncoated	$37	Quantity for GLA11-050-400

GLA11-050-500	N-BK7	50.8	500	4.3	3	497.16	257.55	Uncoated	$37	Quantity for GLA11-050-500

GLA11-050-750	N-BK7	50.8	750	3.8	3	747.49	386.32	Uncoated	$49	Quantity for GLA11-050-750

GLA11-050-1000	N-BK7	50.8	1000	3.6	3	997.62	515.09	Uncoated	$49	Quantity for GLA11-050-1000

GLA11-050-350	N-BK7	50.8	350	4.8	3	348	181.7	Uncoated	$40	Quantity for GLA11-050-350

GLA11-050-420	N-BK7	50.8	420	4.49	3	417	217.06	Uncoated	$35	Quantity for GLA11-050-420

GLA11-050-430	N-BK7	50.8	430	4.45	3	427	222.3	Uncoated	$35	Quantity for GLA11-050-430

GLA11-050-450	N-BK7	50.8	450	4.39	3	447	232.6	Uncoated	$40	Quantity for GLA11-050-450

GLA11-050-550	N-BK7	50.8	550	4.13	3	547	284.3	Uncoated	$35	Quantity for GLA11-050-550

GLA11-050-600	N-BK7	50.8	600	4.04	3	597	310.08	Uncoated	$40	Quantity for GLA11-050-600

GLA11-050-650	N-BK7	50.8	650	3.96	3	647	336	Uncoated	$35	Quantity for GLA11-050-650

GLA11-076-085	N-BK7	76.2	85	24.2	3	69.03	43.78	Uncoated	$107	Quantity for GLA11-076-085

GLA11-076-100	N-BK7	76.2	100	19.2	3	87.33	51.51	Uncoated	$107	Quantity for GLA11-076-100

GLA11-076-150	N-BK7	76.2	150	12.7	3	141.62	77.26	Uncoated	$107	Quantity for GLA11-076-150

GLA11-076-200	N-BK7	76.2	200	10.1	3	193.33	103.02	Uncoated	$107	Quantity for GLA11-076-200

GLA11-076-175	N-BK7	76.2	175	14	5.6	165.8	90.454	Uncoated	$107	Quantity for GLA11-076-175

GLA11-076-300	N-BK7	76.2	300	10	5.2	293.4	155.04	Uncoated	$107	Quantity for GLA11-076-300

GLA11-076-500	N-BK7	76.2	500	8	5.2	494.7	258.398	Uncoated	$107	Quantity for GLA11-076-500

GLA11-076-700	N-BK7	76.2	700	7	5	695.4	361.758	Uncoated	$107	Quantity for GLA11-076-700

GLA11-076-1000	N-BK7	76.2	1000	7	5.6	995.4	516.797	Uncoated	$107	Quantity for GLA11-076-1000

GLA11-101.6-160	N-BK7	101.6	160	22.4	4	146.25	82.688	Uncoated	$145	Quantity for GLA11-101.6-160

GLA11-101.6-250	N-BK7	101.6	250	14.5	4	241.37	129.2	Uncoated	$145	Quantity for GLA11-101.6-250

GLA11-101.6-300	N-BK7	101.6	300	13.5	5	291.039	155.616	Uncoated	$145	Quantity for GLA11-101.6-300

GLA11-101.6-500	N-BK7	101.6	500	9.9	5	493.5	258.399	Uncoated	$145	Quantity for GLA11-101.6-500

GLA11-101.6-800	N-BK7	101.6	800	8	5	794.7	413.437	Uncoated	$145	Quantity for GLA11-101.6-800

GLA11-101.6-1000	N-BK7	101.6	1000	7.4	5	995.1	516.797	Uncoated	$145	Quantity for GLA11-101.6-1000

GLA11-040-105	N-BK7	40	105	6	2.5	103.15	54.53	Uncoated	$28	Quantity for GLA11-040-105

GLA11-020-150	N-BK7	20	150	—	—	—	—	Uncoated	$19	Quantity for GLA11-020-150

GLA11-024-200	N-BK7	24	200	—	—	—	—	Uncoated	$22	Quantity for GLA11-024-200

GLA11-024-250	N-BK7	24	250	—	—	—	—	Uncoated	$22	Quantity for GLA11-024-250

GLA11-024-300	N-BK7	24	300	—	—	—	—	Uncoated	$22	Quantity for GLA11-024-300

GLA11-024-400	N-BK7	24	400	—	—	—	—	Uncoated	$22	Quantity for GLA11-024-400

GLA11-024-500	N-BK7	24	500	—	—	—	—	Uncoated	$22	Quantity for GLA11-024-500

Curves

Typical transmission or coating performance. Refer to the model’s coating range.

Technical notes

Paraxial thin-lens estimate: f ≈ R / (n − 1), where R is the radius of the curved surface and n is the refractive index. Use the listed focal length and back focal length for each model.

Review the material, dimensions and other specifications listed for the individual model. Check any available curves against the model's stated operating range.

Illustrations and printable specification summaries are reference information, not manufacturing drawings. Confirm technical suitability and final requirements with your quotation.

Quote list

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