Transmission Spheres...
          [Range]     [Performance]     [Data]     [Price List]    

Extended Range
What sets Kreischer Optics line of transmission spheres apart is that most are designed for extended range to allow measuring larger radius convex surfaces.  For example, most F/1.5 TS have a reference radius of 121mm, which is, therefore, the maximum convex radius which can be measured.  Our F/1.5 TS has a reference radius of 142.7mm, 18% longer.  In addition, we offer many F-numbers not offered by other companies, “Filling in the gaps”.  The illustration below shows the extended coverage Kreischer Optics’ TS line offers over those of other manufacturers.

Manufactured in the USA
All optical fabrication and assembly performed at Kreischer Optics, Ltd. in McHenry, Illinois. Metal components and optical coatings obtained from quality US vendors.

Performance
Reference element of low expansion fused silica, R ~ 4%, for best metrology on test optics with R ≤ 40%.

Standard reference surface accuracy λ/15 or better (often better than λ/20) with mid spacial frequency content controlled.

Optical & Mechanical Data

F/no.	R	D	W.D.	O.D.	L	EFL	P	P’	V F
0.65	40.5	62.5	21.5	136.9	99.8	69.91	29.40	-14.78	2.71
0.75	48.0	64.0	29.4	133.4	60.5	76.65	28.65	-2.58	-13.95
0.80	64.0	80.0	47.8	141.0	94.5	82.70	18.68	-25.24	3.55
1.00	90.0	90.0	72.2	137.2	94.5	104.16	14.15	-34.82	-1.61
1.5 (1.48)	142.7	96.4	130	133.4	79.3	152.82	10.11	-36.40	-5.47
2.4	264.5	110.2	255	137.2	89.4	252.90	-11.66	-63.91	-5.01
4.2	465	108.0	458	137.2	71.0	435.0	-30.60	-75.18	-6.7
6.0	650	108.4	644	137.2	60.0	630.6	-19.27	-54.87	-4.39
9.0	978	108.0	973	137.2	60.0	943.9	-33.71	-72.65	-7.50
12.0 Diverger	1,201 cx	104	n/a	127.0	28.0	-1185.6	19.72	6.10	-11.93
12.5 Converger	1,258	101	1253	127.0	28.0	1286.5	25.02	8.02	-19.21

R = Radius of the reference surface

D = Diameter of the reference surface

W.D. = Working Distance from focal point to cell

O.D. = Outer Diameter of the lens cell

EFL = Effective Focal Length

P = Distance of principal plane 1 from the reference surface

P’ = Distance of principal plane 2 from last surface

V F = Vertex to mounting flange distance

Transmission Sphere Price List

For questions and further information, please contact:

Cody Kreischer, President

Kreischer Optics, Ltd.

1729 Oak Drive

McHenry, Il   60050-0306

Phone:  (815) 344-4220

Fax:  (815) 344-4221

Email:  cody@kreischer.com