AUTOOLLIMATORS 90°-VI EWING – WITH DOUBLE MICROMETER
An autocollimator with a micrometer driven eyepiece reticle can directly read reticle displacement for higher accuracy compared to a fixed reticle. By using the formula given on page 42 this displacement can be converted into angular tilt of the reflector. The scale division (SD) of the micrometer drums is 5 µm.
Application areas:
■ Measurement of angular tilt
■ Measurement of parallelism of plane plates
■ Straightness measurement of guide ways (manually)
Notes on ordering:
■ Optionally, the autocollimators can be equipped with an eyepiece having 10 mm or 25 mm focal length.
■ Two reticles, 6V/5W illumination w/cord, and eyepiece are included.
■ If not specified otherwise, the autocollimator is adjusted to infinity at 546 nm wavelength. Adjustment to other distances or wavelengths is also possible on demand.
■ The nomenclature of the autocollimators with 90°-viewing and double micrometer is as follows:
Important: Please specify collimator reticle and eyepiece reticle as well as illumination when ordering. Please specify direction of use if reticles with lettering are used so that the lettering will be right-side-up.
Small-size Apertures
Art. No.
Description
Focal Length (mm)
Clear Aperture (mm)
Meas. Range
SD*
L
229 271
AKR 50/40/14.7 MD
50
10
1.6°
10.0"
65
229 272
AKR 90/40/14.7 MD
90
16
1.0°
5.5"
65
229 273
AKR 140/40/14.7 MD
140
28
0.6°
3.5"
118
229 274
AKR 200/40/14.7 MD
200
28
0.4°
2.5"
173
229 275
AKR 300/40/14.7 MD
300
28
0.3°
2.0"
274
229 276
AKR 500/40/14.7 MD
500
28
0.2°
1.0"
474
*SD (scale division) = corresponding angle value in arcsec of one scale division of the micrometer screw
Mid-size Apertures
Art. No.
Description
Focal Length (mm)
Clear Aperture (mm)
Meas. Range
SD*
L
229 277
AKR 300/65/14.7 MD
300
50
0.3°
2.0"
233
229 278
AKR 500/65/14.7 MD
500
50
0.2°
1.0"
415
229 279
AKR 500T/65/14.7 MD**
500
50
0.2°
1.0"
233
*SD (scale division) = corresponding angle value in arcsec of one scale division of the micrometer screw
**Compact design