Name: Double Convex Lens
Rating: 4.5 (100 reviews)

Key Features

Materials

Optical glass such as K9, fused silica, sapphire, MgF2, silicon (Si), ZnSe, ZnS, etc. These materials possess high transmittance, low absorption, low scattering, uniform refractive index, and specific dispersion characteristics.
Shape

Precisely hemispherical. The machining precision of the center and radius of curvature of the sphere is extremely high.
Surface Quality

The surface is precision polished to an optical grade of 10-5 to ensure image quality and reduce scattering and aberrations.
Coating

An AR coating is typically applied to the concave surface to maximize the transmittance of specific wavelengths of light (e.g. visible light) and reduce reflection loss.

Drawing

Specification of Double Convex Lens

Material	Optical glass/ Fused silica/ sapphire etc.
Diameter	2mm~300mm
Diameter tolerance	±0.05mm(≤50mm)
Diameter tolerance	±0.1mm(＞50mm)
Focal length	50mm~2000mm
Focal length tolerance	±0.2%（＜10mm）
	±0.5%（＜10mm-1000mm）
	±1%（＜＞1000mm）
Center Thickness	2mm~20mm
Surface quality	60/40， 40/20， 20/10
Surface accuracy	λ/2~λ/10@632.8nm，532nm
Clear Aperture	>85% dig diameter
Centration	<3arc min~ 30arc sec
Coating	As per customer’s request

Material	Diameter (mm)	Surface Radius 1 (mm)	Surface Radius 2 (mm)	Center Thickness (mm)	Focal Length (mm)
H-ZF7LA	5.4	12.19	3.4	2.63	3.5
ZF14	10	11.324	8.083	3.37	5.6
H-ZLAF68B	8	6.11	104.23	2.2	6.7
H-ZF7LA	10	10.49	10.49	3.5	7
ZF11	9	11.5	7.5	9.6	8
H-K9L	14	32.15	13.397	4.7	9
H-K9L	10	9.817	9.817	4.6	10.3
H-ZF62	14	28.64	12.972	6	10.4
H-LAK53A	11	27.589	10.5	3.1	10.4
JGS1	9.5	9.09	9.09	3.5	10.5
H-LAF3	14	10.56	30.62	5	11.1
H-K9L	11	11.695	11.695	4	12
H-K9L	12.5	12.1	12.1	4.5	12.5
ZF6	12	591.82	9.62	4	12.6
H-K9L	6.8	13.183	13.183	2	13.11
JGS1	11	7.34	26.52	6	13.5
H-LAK1	10	19.724	15.346	3.5	13.6
H-LAK3	14	28.31	14.997	5.5	13.8
ZF1	12	17.014	17.014	4.5	13.8
H-ZBAF21	8	12.039	55.72	2.32	13.9
H-LAK7	9	19	19	4	13.9
H-QF50	16.6	17.76	13.315	5.53	13.9
H-ZBAF21	8	12.039	55.72	2.32	13.9
ZK3	11.7	38.965	10.284	33	14.16
H-K51	12.5	14.011	14.011	4.6	14.2
H-K9L	12	36.526	9.005	4.5	14.5
H-K9L	10	64	9.29	3	15
H-ZK2	13	11.06	42.875	5	15.6
H-ZK3	14	31.35	12.702	3.9	15.86
H-LAK7	11	13	77	4	15.9
H-ZBAF21	15	28.81	19.099	3.68	16.4
JGS1	11	73.3	9.067	5	16.5
H-ZK11	15	22.92	21.15	3.73	17
H-ZK9A	12	49.493	13.381	2.5	17.2
ZK3	14.2	12.702	48	3.7	17.44
ZK3	14.8	13.381	40.8	4	17.59
H-ZK11	15	22.92	21.15	3.73	17.8
H-K9L	19.8	22.887	13.765	7.7	17.9
ZK9	16.5	34.28	15.704	4.5	17.98
ZK3	14.8	17.3	25.638	3.8	18.13
H-LAK3	22	16.144	92.68	6.5	18.8
H-ZK9A	11	18.11	31.47	3.1	18.9
H-K9L	15.5	26.12	15.136	4.5	19.28
ZF6	12	19.04	57.53	3	19.3
H-ZK9A	16	14.369	67.975	4	19.48
BaK8	13.5	70.63	13.062	3.6	19.55
JGS1	13.417	15.812	19.59	4.3	19.8
H-F4	32	69.2	20.83	12.5	20
H-ZK10L	15	17.192	43.96	4.69	20.5
H-ZK10L	14	17.912	43.96	4.96	20.5
ZK9	16.5	76.91	15.241	4	20.85
H-ZK6	16	46.88	16.827	4	20.9
H-LAF3B	16	21.59	54.45	3.5	21.1
H-K9L	14.6	23.01	19.59	4.6	21.2
H-ZK3	18	53.85	16.385	4.5	21.84
H-K9L	12.6	22.28	22.28	2.5	22
H-ZLAF68B	20	38.55	38.55	5	22.5
H-ZK10	20	15.62	145.273	7	23
QK3	10	45.16	15	2.36	23.27
H-ZK9	21.5	41.84	21.6	5.5	23.75
H-F4	20.6	16.482	131.2071	4.91	23.9
N-LAK12	15	42.87	25.66	4	24.2
N-ZK9	21.5	70.18	18.65	5.5	24.33
H-ZLAF50B	18	33.525	46.6	3.3	24.7
H-K9L	12.7	25.28	25.28	3.52	25
H-LAK3	20	36.81	36.81	4	25.2
H-K9L	13	50	17.498	3	25.5
H-ZK50	17.8	34.848	26.993	5	25.8
BAK2	25	32.884	23.621	7.8	26.8
ZK9	21	41.8	26.4	5.5	26.91
H-LAK53A	16	29.404	63.187	3	27
H-LAF53	18.5	62.95	29.17	3.7	27
ZK9	22.5	20	100	5.5	27.35
H-ZK3	15.2	19.01	100	3	27.37
H-LAK51	13	37.76	37.76	2.8	27.5
ZBaF3	25.5	100	21.68	6.3	27.69
H-FK61	30	17.97	69.2	12	28
H-LAF3B	18.6	27.616	75.01	7.7	28

Typical Application Areas

Underwater Photography and Detection:

Observation windows for underwater cameras, ROVs (Remotely Operated Vehicles), and AUVs (Autonomous Underwater Vehicles). The hemispherical design provides a near 180° wide field of view while withstanding water pressure.
Underwater Photography and Detection:

Observation windows for underwater cameras, ROVs (Remotely Operated Vehicles), and AUVs (Autonomous Underwater Vehicles). The hemispherical design provides a near 180° wide field of view while withstanding water pressure.
Underwater Photography and Detection:

Observation windows for underwater cameras, ROVs (Remotely Operated Vehicles), and AUVs (Autonomous Underwater Vehicles). The hemispherical design provides a near 180° wide field of view while withstanding water pressure.