0220-07_-_Optical_Mirrors_(RPED)_-_Drawing_02_(20798-02-0020).PDF

2.00

R3.125

0.25

A

Optical surface

DETAIL A

SCALE 4 : 1

0.03 Chamfer

X2plcs

Notes:

1. Intended use: Secondary Mirror in a beam expanding telescope

2. Material: Zerodur or ClearCeram

3. Optical surface :

a. Clear Aperture: Area between a 0.20 inch inner diameter and 1.80 inch outer diameter

b. R = 3.125 ± 0.03 inches convex

c. Conic constant = -1.0 (Parabolic)

d. Surface error: Less than 0.025 waves rms at 632 nm measured over any 1.25 inch diameter subaperture

e. Surface roughness: Less than 20 Angstroms rms

f. Scratch dig: 20-10 over 99.99% of the surface with no scratches larger than 80 and no digs greater than 60

4. Back surface: Fine grind

Revisions A. 24JUN16 Revised Optical Surface spec's.

D

C

B

AA

B

C

D

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8 7 6 5 4 3 2 1

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

THE ELECTRO-OPTICS CENTER. ANY

REPRODUCTION IN PART OR AS A WHOLE

WITHOUT THE WRITTEN PERMISSION OF

THE ELECTRO-OPTICS CENTER IS

PROHIBITED.

PROPRIETARY AND CONFIDENTIAL

INTERPRET GEOMETRIC

TOLERANCING PER:

MATERIAL

FINISH

ZeroDur or ClearCeram

See Notes

DRAWN

COMMENTS:

DATENAME

TITLE:

SIZE

B

DWG. NO. REV

WEIGHT: SCALE: 2:1

UNLESS OTHERWISE SPECIFIED:

A

EJF 5MAY15

Secondary Mirror

SHEET 1 OF 1

20798-02-0020

DO NOT SCALE DRAWING

DIMENSIONS ARE IN INCHES

TOLERANCES:

.XX = ± 0.01

.XXX = ± 0.005

ANG = ± 0.5

ITAR CONTROLLED

THIS DOCUMENT CONTAINS

INFORMATION CONTROLLED UNDER THE

INTERNATIONAL TRAFFIC IN ARMS

REGULATIONS (ITAR). SUCH DATA MAY

NOT BE EXPORTED OR TRANSFERRED TO

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DEPARTMENT OF STATE.