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Plano Concave Lens

Name: Plano Concave Lens
Brand: ECOPTIK INDUSTRIAL PTE.LTD.

A plano convex lens has the functions of focusing and collimation. When an object is located at infinity on the convex side, the spherical aberration is significantly lower than that of a biconvex lens. The core value of a plano convex lens lies in its simplicity, reliability, low cost, and optimization of single-sided aberration. It is irreplaceable in laser engineering, lighting systems, and simple imaging.

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Lano Convex Lens VS Biconvex

First of all, from the imaging of the plano-convex lens, the light incident on the two sides of the plano-convex lens has a slightly different refractive index. So, in fact, the focal lengths on both sides are also different. But when using, it cannot be reversed. There is also a type of "plano lens", which is different from plano-convex and biconvex lenses. The incident light is reflected and perpendicular to the parallel incident characteristics to continue straight forward, and no refracted light is produced; it is the middle. The flat glass optical element with the same thickness as the edge is called a flat lens, a biconvex lens, and the light incident on both sides has the same refractive index. The same goes for focal length. Plano-convex lenses have slightly different refractive indices for light incident on both sides. So actually the focal lengths on both sides are also different.

A convex lens is a lens with a thicker center and thinner edges. Convex lenses are divided into biconvex, plano-convex, and concave-convex (or positive meniscus) forms. A biconvex lens, the light incident on both sides has the same refractive index and the same focal length.

Plano-convex lens, one side is flat and the other side is convex. This type of lens is used to gather parallel light, or to convert point light sources into parallel light.

The main use of plano-convex lens are far-infrared collimator, stage lighting, automotive lighting, outdoor road lighting, airport lighting and indoor special lighting, etc.

Specifications of Plano Concave 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）
Edge Thickness	2mm~20mm
Surface quality	60/40, 40/20, 20/10
Surface accuracy	λ/2~λ/10@632.8nm, 532nm, etc.
Clear Aperture	>85% dig diameter
Centration	<3arc min~ 30arc sec
Chamfer	<0.2mm×45°
Coating	As per customer's request

Type No.	Diameter (mm)	Center Thickness (mm)	Edge Thickness (mm)	Effective Focal Length (mm)
PCA-6	6	2	2.9	-10
PCA-7.8	7.8	5.3	16.3	-12.7
PCA-8	8	2	3	-15
PCA-10	10	2	3.2	-20
PCA-12.7-A	12.7	2	4.1	-20
PCA-12.7-B	12.7	2	3.4	-30
PCA-12.7-C	12.7	2	2.8	-50
PCA-12.7-D	12.7	2	2.3	-100
PCA-15	15	2	2.7	-75
PCA-21	21	2	4.7	-40-
PCA-22.4	22.4	2	3.2	-100
PCA-25.4-B	25.4	2	7.2	-35
PCA-25.4-C	25.4	2	4.3	-70
PCA-25.4-D	25.4	2	4.1	-75
PCA-25.4-E	25.4	2	3.6	-100
PCA-25.4-F	25.4	2	3	-150
PCA-25.4-G	25.4	2	2.7	-200
PCA-25.4-H	25.4	2	2.5	-300
PCA-25.4-I	25.4	2	2.3	-500
PCA-25.4-J	25.4	2	2.2	-1000
PCA-30	30	2	4.8	-80
PCA-38-A	38	3	11.3	-50
PCA-38-B	38	3	6.6	-100
PCA-38-C	38	3	4.8	-200
PCA-38-D	38	3	4	-350
PCA-38-E	38	3	3.7	-500
PCA-38-F	38	3	3.5	-700
PCA-50-A	50	5	11	-100
PCA-50-B	50	5	9.7	-125
PCA-50-C	50	3	4.2	-500
PCA-50-D	50	3	3.8	-800
PCA-50.8-A	50.8	3.5	13	-75
PCA-50.8-B	50.8	4	10.7	-100
PCA-50.8-C	50.8	4	8.3	-150
PCA-75-A	75	5	14.6	-150
PCA-75-B	75	5	12	-200
PCA-100-A	100	6	18.85	-200
PCA-100-B	100	6	16	-250
PCA-100-C	100	6.2	14.45	-300
PCA-100-D	100	8.2	14.32	-400
PCA-100-E	100	8	12.87	-500
PCA-100-F	100	9.6	13.64	-600
PCA-125-A	125	4.2	17.3	-300
PCA-125-B	125	5.6	15.24	-400
PCA-125-C	125	6	13.64	-500
PCA-125-D	125	9	15.34	-600
PCA-125-E	125	8.4	13.82	-700
PCA-125-F	125	9.6	14.34	-800
PCA-150-A	150	5	19.03	-400
PCA-150-B	150	6.2	17.29	-500
PCA-150-C	150	7.5	16.68	-600
PCA-150-D	150	9	16.83	-700
PCA-150-E	150	8	14.84	-800
PCA-200-A	200	6.57	26.63	-500
PCA-200-B	200	7.8	24.31	-600
PCA-200-C	200	9.2	23.25	-700
PCA-200-D	200	10.5	22.73	-800
PCA-200-E	200	11.8	22.64	-900
PCA-200-F	200	13.1	22.83	-1000
PCA-250-A	250	6	28.2	-700
PCA-250-B	250	6.9	26.18	-800
PCA-250-C	250	8	25.05	-900
PCA-250-D	250	9.5	28.45	-1000
PCA-250-E	250	12	25.87	-1100
PCA-250-F	250	15	27.69	-1200
PCA-300-A	300	10	32.17	-1000
PCA-300-B	300	12	30.35	-1200
PCA-300-C	300	14	29.67	-1400
PCA-300-D	300	16	29.67	-1600

Material	Diameter (mm)	Concave Surface Radius (mm)	Center Thickness (mm)	Focal Length (mm)
H-K9L	3	-3.05	3	-5.9
H-K9L	5	-51.68	5	-100
H-K9L	9	-10.8	1.4	-20.9
JGS1	10	-13.81	2	-30.1
Corning 7978	10	-6.111	2	-13.3
H-K9L	11	-11.695	1	-22.65
H-K9L	12	-42.63	1.5	-82.5
Coring7978	12	-27	2	-58.9
Corning 7978	12	-18.155	2	-39.6
H-K9L	12	-13.4	1.4	-26
HWB850	12	-8.3	3	-16
H-ZF7LA	12	-9	2	-11.2
JGS1	12.7	-600	3	-300
JGS1	12.7	-500	3	-250
JGS1	12.7	-33.624	3.4	-16.8
H-ZK6	13	-7.238	3	-12.4
H-LAF3	14	-8.6	2	-11.6
H-K9L	15	-36.07	4.2	-69.8
HWB850	17	-18.42	1.5	-34.4
H-K9L	19	-8.5	2	-16.5
ZF6	19	-9.615	2	-12.7
H-K9L	20	-1500	3	-2902
H-K9L	20	-1000	3	-1935
H-K9L	20	-800	3	-1548
H-K9L	20	-500	3	-967
JGS1	20	-33.332	4	-72.7
JGS1	20	-31.688	3	-69.1
H-ZF7LA	20	-23.55	1.4	-28.9
B270	21.9	-14.12	4.1	-27
H-K9L	22	-27	2	-52.2
Silica	22.5	-90	4.3	-45
ZF2	24	-19.8	4.1	-29.43
H-K9L	25	-51.68	3.5	-100
JGS1	25	-45.84	2.5	-100
JGS1	25	-22.92	2	-50
JGS1	25	-22.89	3	-50
JGS1	25.4	-150	3	-75
JGS1	25.4	-23	2	-50
Silica	25.4	-38.1	3.18	-19
H-ZF3	28	-13.964	14	-19.5
H-ZF7LA	30	-12.706	1.2	-15.6
ZK2	30.3	-82.6	2	-141.56
H-ZF7LA	32	-18.7	8.05	-23.2
H-K9L	33	-155	2.5	-299.92
H-K9L	42	-51.87	2	-100
JGS1	42	-34.78	3	-75.9
H-ZF7LA	44.98	-35.149	2.5	-43.7
JGS1	46	-70.96	3	-155
H-ZF7LA	51.98	-35.149	2	-43.7
H-ZF7LA	52	-44.3	3.485	-55
H-K9L	58	-600	10	-1161
ZBaF5	58	-39.17	2	-58.37
H-ZF11	99	-116.83	3.5	-167
H-K9L	100	-2000	12	-1000