Application：It's used in various models of Interferometer,Transmission Flats & Spheres and Reference Flats & Spheres,so that it extends the instrument using range,to meet the demand of high precision surface accuracy of detection.

60mm Transmission Sphere/Flat
 

F/number	Radius of The  Transmission Sphere	Radius Measurement Range		Maximum Aperture Measurement Range
		Convex	Concave	Convex	Concave
F0.6	17.458	1~16.8	1~140	25.5	99
F0.7	24	2~23.3	2~155	31	99
F1.0	47.1	3~46.67	4~245	43	99
F1.4	64.4	4~63.56	4~355	43	99
F2.0	113.573	5~112	5~485	54	99
F2.8	161.63	6~160	6~385	56	99
F4.2	241.77	12~240	12~370	57	99
F5.6	326.6	14~325	14~300	57	81
F8.1	474.212	16~473	16~150	57	50
F8.4D	510.55	-	512~980	-	60
F15	913.673	6~910	-	60	-

4-inch Transmission Sphere/Flat
 

F/number	Radius of The  Transmission Sphere	Radius Measurement Range		Maximum Aperture Measurement Range
		Convex	Concave	Convex	Concave
F0.65	38.738	3~38	3~	61	unlimited
F0.75	48.082	4~48	4~	64	unlimited
F1.0	79.992	6~79.9	6~	80	unlimited
F1.5	122.77	10~122.7	10~	80	unlimited
F2.1	192.09	15~192	15~	91	unlimited
F3.3	308.379	20~308	20~	93	unlimited
F4.2	390.77	25~390	25~	93	unlimited
F4.9D	+459.279	-	460~	-	unlimited
F6D	+640.48	-	641~	-	unlimited
F6.2	610.256	40~610	40~	98	unlimited
F8.1	802.146	60~802	60~	99	unlimited
F11.6	1148.334	100~1148	100~	99	unlimited
F12D	+1213	-	1214~	-	unlimited
F15	1510.3	150~1510	130~	102	unlimited
F23	2376.61	300~2376	150~	102	unlimited
F∞	∞	∞	∞	102

 
6-inch Transmission Sphere/Flat
 

F/number	Radius of The  Transmission Sphere	Radius Measurement Range		Maximum Aperture Measurement Range
		Convex	Concave	Convex	Concave
F0.8	80.127	5~80	5~x	100	1.25x
F1.1	127.23	6~127	6~x	115	0.91x
F2.2	292.382	7~292	7~x	132	0.46x
F3.6	499.8	8~499	8~x	138	0.28x
F5.5	791.6	9~791	9~x	143	0.18x
F7.6	1111.3	12~1111	12~x	146	0.13x
F20	3000	20~3000	20~x	150	0.05x
F∞	∞	∞	∞	154

 

The Flats' Surface Error is better than	0.03μm(λ/20)
The Spheres' Surface Error is better than	0.03μm(λ/20)