K9 Plano-Convex Lens

Overview

It is the top cost-effective choice for beam collimation and focusing.

Designed for infinite conjugate ratio applications, the K9 Plano-Convex Lens is a fundamental optical component fabricated from high-quality H-K9L (N-BK7) glass, offering excellent transmission across visible to near-infrared spectra with superior chemical stability. Its asymmetric structure effectively minimizes spherical aberration, making it ideal for focusing collimated light into a spot or collimating a point source into a parallel beam.

With an extensive range of specifications and optional AR coatings, it serves as the versatile "workhorse" for laboratory setups and industrial laser systems, delivering reliable performance at a highly competitive price point.

Dimension:

Qualification

General Specifications for K9 Plano-Convex Lenses

Parameter	Specification
Material	K9 (Grade A Optical Glass)
Shape	Plano-Convex
Design Wavelength ($\lambda$c)	546.1 nm (n=1.519)
Surface Quality	40-20 Scratch-Dig
Clear Aperture	> 90%
Power (Fringes)	1-5
Irregularity (Fringes)	0.2-1
Centration	3' (arc min)
Chamfer	0.25 mm × 45°
Dimension Tolerance	Diameter: +0.0 / -0.1 mm; Thickness: ±0.1 mm
Focal Length Tolerance	±1%

Selection Chart

K9 Plano-Convex Lens Specification Table

Item No.	D (mm)	f (mm)	tc (mm)	te (mm)	fb (mm)	r (mm)	Centration
VLGLP6-8	6	8	2.3	1	6.5	4.15	≤ 3'
VLGLP6-25	6	25	3	2.6	23.02	12.98	≤ 3'
VLGLP10-10	10	10	4.3	2	7.2	5.19	≤ 1'
VLGLP10-15	10	15	3.8	2	12.5	7.79	≤ 1'
VLGLP12.7-12.7	12.7	12.7	6.3	2	8.7	6.59	≤ 1'
VLGLP12.7-15	12.7	15	6.2	2	10.9	7.8	≤ 1'
VLGLP12.7-25.4	12.7	25.4	3.5	2	22.8	13.18	≤ 1'
VLGLP12.7-30	12.7	30	3.4	2	27.8	15.6	≤ 1'
VLGLP12.7-35	12.7	35	3.2	2	34.9	16.1	≤ 1'
VLGLP12.7-38.1	12.7	38.1	3	2	36.12	19.77	≤ 1'
VLGLP12.7-50.8	12.7	50.8	2.8	2	48.95	26.37	≤ 1'
VLGLP12.7-100	12.7	100	2.4	2	98.42	51.9	≤ 1'
VLGLP12.7-125	12.7	125	2.4	2	123.42	64.88	≤ 1'
VLGLP12.7-150	12.7	150	2.3	2	148.5	77.9	≤ 1'
VLGLP12.7-175	12.7	175	2.3	2	173.49	90.83	≤ 1'
VLGLP12.7-200	12.7	200	2.2	2	198.55	103.8	≤ 1'
VLGLP12.7-250	12.7	250	2.2	2	248.55	129.75	≤ 1'
VLGLP12.7-300	12.7	300	2.2	2	298.55	155.7	≤ 1'
VLGLP15-15	15	15	6	2	11.1	7.79	≤ 1'
VLGLP15-20	15	20	5.2	2	16.6	10.38	≤ 1'
VLGLP15-30	15	30	3.9	2	27.4	15.57	≤ 1'
VLGLP20-30	20	30	5.6	2	26.3	15.57	≤ 1'
VLGLP20-40	20	40	4.6	2	36.97	20.76	≤ 1'
VLGLP20-50	20	50	4	2	47.4	25.95	≤ 1'
VLGLP25-25	25	25	11.65	2	17.32	12.97	≤ 1'
VLGLP25-35	25	35	7	2	30.4	18.17	≤ 1'
VLGLP25-50	25	50	5.2	2	46.6	25.95	≤ 1'
VLGLP25-75	25	75	4	2	72.4	38.93	≤ 1'
VLGLP25-80	25	80	3.9	2	77.4	41.52	≤ 1'
VLGLP25-100	25	100	3.5	2	97.7	51.9	≤ 1'
VLGLP25-125	25	125	3.1	2	122.96	64.87	≤ 1'
VLGLP25-150	25	150	3.1	2	148	77.85	≤ 1'
VLGLP25-175	25	175	2.86	2	173.11	90.83	≤ 1'
VLGLP25-200	25	200	2.8	2	198.2	103.8	≤ 1'
VLGLP25-250	25	250	2.6	2	248.3	129.75	≤ 1'
VLGLP25-300	25	300	2.5	2	298.2	155.7	≤ 1'
VLGLP25-350	25	350	2.4	2	348.42	181.65	≤ 1'
VLGLP25-400	25	400	2.4	2	398.42	207.6	≤ 1'
VLGLP25-450	25	450	2.4	2	448.42	233.55	≤ 1'
VLGLP25-500	25	500	2.3	2	498.48	259.5	≤ 1'
VLGLP25-800	25	800	2.2	2	798.55	415.2	≤ 1'
VLGLP25-900	25	900	2.2	2	898.55	467.1	≤ 1'
VLGLP25.4-25.4	25.4	25.4	12	2.48	17.5	13.23	≤ 1'
VLGLP25.4-38	25.4	38	6.5	1.9	33.72	19.72	≤ 1'
VLGLP25.4-50	25.4	50	5.2	1.9	46.6	25.95	≤ 1'
VLGLP25.4-75	25.4	75	4.05	1.9	72.33	38.93	≤ 1'
VLGLP25.4-100	25.4	100	3.5	1.9	97.7	51.9	≤ 1'
VLGLP25.4-125	25.4	125	3.2	1.9	122.89	64.88	≤ 1'
VLGLP25.4-150	25.4	150	3	2	148.03	77.85	≤ 1'
VLGLP25.4-175	25.4	175	2.89	2	173.03	90.83	≤ 1'
VLGLP25.4-200	25.4	200	2.8	2	198.2	103.8	≤ 1'
VLGLP25.4-250	25.4	250	2.6	2	248.3	129.75	≤ 1'
VLGLP25.4-300	25.4	300	2.5	2	298.4	155.7	≤ 1'
VLGLP25.4-400	25.4	400	2.4	2	398.4	207.6	≤ 1'
VLGLP25.4-500	25.4	500	2.3	2	498.4	259.5	≤ 1'
VLGLP25.4-600	25.4	600	2.3	2	598.49	311.4	≤ 1'
VLGLP25.4-700	25.4	700	2.2	2	698.55	363.3	≤ 1'
VLGLP25.4-800	25.4	800	2.2	2	798.55	415.2	≤ 1'
VLGLP25.4-1000	25.4	1000	2.2	2	998.55	519	≤ 1'
VLGLP25.4-1500	25.4	1500	2.1	2	1498.61	778.5	≤ 1'
VLGLP25.4-2000	25.4	2000	2.1	2	1998.61	1038	≤ 1'
VLGLP30-50	30	50	6.8	2	45.52	25.95	≤ 1'
VLGLP30-60	30	60	5.9	2	56.1	31.14	≤ 1'
VLGLP30-100	30	100	4.2	2	97.2	51.9	≤ 1'
VLGLP30-120	30	120	3.8	2	117.5	62.28	≤ 1'
VLGLP30-150	30	150	3.5	2	147.7	77.85	≤ 1'
VLGLP30-200	30	200	3.1	2	197.95	103.8	≤ 1'
VLGLP30-250	30	250	2.9	2	248.09	129.75	≤ 1'
VLGLP30-300	30	300	2.7	2	298.22	155.7	≤ 1'
VLGLP40-50	40	50	11.4	2	42.5	25.95	≤ 1'
VLGLP40-80	40	80	7.1	2	75.3	41.52	≤ 1'
VLGLP40-100	40	100	6	2	96	51.9	≤ 1'
VLGLP40-150	40	150	4.6	2	147	77.85	≤ 1'
VLGLP40-200	40	200	3.9	2	197.4	103.8	≤ 1'
VLGLP50-63	50	63	14	3	53.78	32.7	≤ 1'
VLGLP50-80	50	80	11.4	3	72.5	41.52	≤ 1'
VLGLP50-100	50	100	9.4	3	93.8	51.9	≤ 1'
VLGLP50-150	50	150	7.1	3	145.3	77.85	≤ 1'
VLGLP50-200	50	200	6.1	3	196	103.8	≤ 1'
VLGLP50-250	50	250	5.4	3	246.4	129.75	≤ 1'
VLGLP50-300	50	300	5	3	296.7	155.7	≤ 1'
VLGLP50-500	50	500	4.2	3	497.2	259.5	≤ 1'
VLGLP50-600	50	600	4	3	597.4	311.4	≤ 1'
VLGLP50.8-75	50.8	75	12.6	3	66.7	38.93	≤ 1'
VLGLP50.8-100	50.8	100	9.6	3	93.68	51.9	≤ 1'
VLGLP50.8-125	50.8	125	8.2	2.8	119.6	64.88	≤ 1'
VLGLP50.8-150	50.8	150	7.1	2.8	145.3	77.85	≤ 1'
VLGLP50.8-200	50.8	200	6.1	3	196	103.8	≤ 1'
VLGLP50.8-300	50.8	300	5	2.9	296.7	155.7	≤ 1'
VLGLP50.8-400	50.8	400	4.5	3	397.04	207.6	≤ 1'
VLGLP50.8-450	50.8	450	4.3	3	447.17	233.55	≤ 1'
VLGLP50.8-500	50.8	500	4.2	3	497.23	259.5	≤ 1'
VLGLP76.2-150	76.2	150	13.2	3	141.31	77.85	≤ 1'
VLGLP76.2-500	76.2	500	5.9	3	496.11	259.5	≤ 1'
VLGLP100-120	100	120	26	3	102.9	62.3	≤ 3'
VLGLP100-150	100	150	21.2	3	136.1	77.85	≤ 3'
VLGLP100-200	100	200	15.8	3	189.6	103.8	≤ 3'
VLGLP100-250	100	250	13	3	241.4	129.75	≤ 3'
VLGLP100-500	100	500	7.9	3	494.8	259.5	≤ 3'
VLGLP100-800	100	800	6	3	796	415.2	≤ 3'
VLGLP100-1000	100	1000	5.4	3	996.4	519	≤ 3'
VLGLP100-2000	100	2000	4.2	3	1997.2	1038	≤ 3'