crystaltechno : crystal optics manufacturer

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Lenses

Spherical Bi-Convex Lenses

BK-7

ZnS

ZnSe

CaF₂

BaF₂

MgF₂

LiF

	Material	Lithium Fluoride
	Surface figure	Lambda/2 at 633 nm per inch
	Scratch-Dig	60 - 40
	Diameter tolerance	± 0.1 mm
	Paraxial Focal Length Tolerance	± 2%
	Centration	less than 5 arc minutes
	Clear aperture	90%
	Bevels	(0.2+0.3)mm x 45 arc degree

D, mm	FLx, mm	R, mm	t_c, mm	t_e, mm	Part Number
12.7	25.0	15.73	4.7	2.0	BCX4-01
12.7	50.0	32.25	3.3	2.0	BCX4-02
25.4	50.0	31.73	7.3	2.0	BCX4-03
25.4	100	64.76	4.5	2.0	BCX4-04
25.4	150.0	97.53	3.7	2.0	BCX4-05
25.4	200.0	130.24	3.2	2.0	BCX4-06
25.4	250.0	162.93	3.0	2.0	BCX4-07
25.4	500.0	326.29	2.5	2.0	BCX4-08
38.1	75.0	47.60	11.0	3.0	BCX4-09
38.1	125.0	80.71	7.6	3.0	BCX4-10
38.1	200.0	129.92	5.8	3.0	BCX4-11
38.1	375.0	244.40	4.5	3.0	BCX4-12
38.1	750.0	489.44	3.7	3.0	BCX4-13
50.8	100.0	63.60	13.6	3.0	BCX4-14
50.8	150.0	96.76	9.8	3.0	BCX4-15
50.8	200.0	129.65	8.0	3.0	BCX4-16
50.8	250.0	162.44	7.0	3.0	BCX4-17
50.8	300.0	195.18	6.3	3.0	BCX4-18
50.8	400.0	260.60	5.5	3.0	BCX4-19
50.8	500.0	325.99	5.0	3.0	BCX4-20
50.8	750.0	489.37	4.3	3.0	BCX4-21
50.8	1000.0	652.72	4.0	3.0	BCX4-22
76.2	150.0	95.61	18.8	3.0	BCX4-23
76.2	200.0	128.83	14.5	3.0	BCX4-24
76.2	250.0	161.80	12.1	3.0	BCX4-25
76.2	300.0	194.66	10.5	3.0	BCX4-26
76.2	400.0	260.22	8.6	3.0	BCX4-27
76.2	500.0	325.68	7.5	3.0	BCX4-28
76.2	600.0	391.09	6.7	3.0	BCX4-29
76.2	800.0	521.85	5.8	3.0	BCX4-30
76.2	1000.0	652.57	5.2	3.0	BCX4-31
76.2	1500.0	979.25	4.5	3.0	BCX4-32
* Numerical parameters correspond to Lambda=5 µm (n=1.3266)