OP-Unite Solutions Ltd - Achromatic Lens, Cemented Lens

<%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%> OP-Unite Solutions Ltd - Achromatic Lens, Cemented Lens

Achromatic Lens

Achromatic Lens is an achromatic consists of a positive low-index Crown Glass lens element cemented to a negative high-index Flint Glass lens element. The elements are chosen so as to cancel chromatic aberration at two well-separated wavelengths, usually in the blue and red region of the spectrum. Focal length is constant at those two wavelengths and focal length shifts are virtually eliminated across the visible wavelengths. One frequent use is to achieve diffraction limited focusing of a laser beam. Negative Achromats are typically used when there is a need to eliminate chromatic aberration. In addition to reducing chromatic aberration at the design wavelengths, spherical aberration and coma are greatly reduced.

OP-Unite can provide Positive Achromatic Lens and Negative Achromatic Lens by two piece single lens (Doublet) or three piece single lens (Triplet).

Applications:
● Projection Optics System
● Imaging Optics Systems
● Laser Measurements Systems

Positive Achromatic Lens

Negative Achromatic Lens

General Specifications
Parameter	Commercial Grade
Substrate Material	All optical glass per your requirements
Design Wavelength	480.0nm, 546.1nm, 643.8nm
Diameter Tolerance	+0/-0.15mm
Focal Length Tolerance	+/-2%@546.1nm
Clear Aperture	>Central 85% of diameter
Surface Quality	60-40 S/D
Centration	< 3 arc minutes
Surface Accuracy	λ/4@632.8nm
Chamfer	0.25mm x 45°
Coating	Single layer MgF2 broadband AR coating

Positive Achromatic Lens Standard Products:

Part No.	f(mm)	φ(mm)	R₁(mm)	R₂=R₃(mm)	R₄(mm)	t_c1(mm)	t_c2(mm)	f_b(mm)	Lens A	Lens B
LCA1101	10	6.0	6.75	-4.04	-23.39	3.69	0.72	7.6	SSK4A	SF8
LCA1102	15	6.0	9.12	-5.86	-20.99	2.71	1.20	13.1	BK7	F2
LCA1103	30	6.0	16.03	-13.09	-67.61	1.40	0.60	28.8	BK7	F2
LCA1104	25	8.0	16.53	-10.88	-39.80	2.63	2.50	22.6	SK11	SF5
LCA1105	30	8.0	20.43	-12.78	-75.97	3.07	1.43	27.6	SSK4A	SF8
LCA1106	20	10.0	13.09	-9.12	-34.28	5.56	1.80	16.5	BaK1	SF8
LCA1201	25	12.0	15.04	-12.48	-33.10	3.76	2.00	22.2	BaLKN3	SF15
LCA1202	25	12.7	16.41	-12.02	-40.74	3.76	2.00	22.2	BaK4	SF15
LCA1203	30	12.7	19.14	-14.03	-55.21	3.93	1.68	27.0	BaK1	SF8
LCA1204	40	12.7	21.28	-17.00	-89.95	3.00	0.80	37.8	BK7	F2
LCA1205	75	12.7	39.99	-31.99	-167.90	2.40	1.00	73.0	BK7	F2
LCA1206	40.5	13.0	26.04	-18.02	-72.03	3.33	1.30	38.1	SK11	SF5
LCA1207	44	14.0	28.58	-19.69	-141.61	3.8	1.40	41.1	SSK4A	SF8
LCA1208	73	17.0	47.77	-33.04	-231.30	3.50	1.70	70.2	SSK4A	SF8
LCA1209	40	18.0	25.76	-19.01	-73.79	5.64	2.50	35.9	BaK1	SF8
LCA1210	56	19.0	35.99	-25.13	-100.53	4.44	1.50	52.9	SK11	SF5
LCA1301	65	25.0	39.38	-31.61	-85.90	6.0	2.0	61.0	BaLKN3	SF15
LCA1302	50	25.4	34.51	-21.98	-213.80	9.00	2.50	43.3	BaF10	SF10
LCA1303	60	25.4	37.67	-28.58	-72.78	10.00	2.81	53.5	BK6	SF10
LCA1304	80	25.4	42.46	-33.88	-183.65	5.80	2.60	75.1	BK7	F2
LCA1305	100	25.4	52.79	-42.46	-228.60	4.50	2.00	96.0	BK7	F2
LCA1306	120	25.4	73.28	-54.33	-159.96	4.20	2.00	117.103	BK7	SF5
LCA1309	125	25.4	76.421	-56.658	-166.815	4.38	2.09	121.925	BK7	SF5
LCA1307	100	26.5	64.04	-44.88	-128.72	4.80	2.00	96.5	SK11	SF8
LCA1308	140	30.0	93.22	-59.14	-156.67	6.52	2.51	136.0	BK7	SF5

Negative Achromatic Lens Standard Products:

Part No.	f(mm)	φ(mm)	R₁(mm)	R₂=R₃(mm)	R₄(mm)	t_c1(mm)	t_c2(mm)	f_b(mm)	Lens A	Lens B
LCA0201	-25	12.7	-15.60	13.09	44.16	3.00	2.67	-27.5	BK7	F2
LCA0202	-40	12.7	-24.45	17.97	66.60	3.00	2.34	-42.5	BK7	F2
LCA0301	-50	25.4	-31.19	24.89	85.31	3.00	4.22	-53.3	BK7	F2

Note: Cutting Lenses, Square Lenses, Rectangle Lenses, Optically Contacted Achromatic Lenses and Coatings are available upon requestment.

The general tolerance specifications above provide a guideline regarding manufacturing capabilities for optics ranging in size from 3-200mm. The manufacturing limits are not absolute; tighter tolerances may be possible. Part specific tolerances may vary depending on component size, shape, and/or material.