OPTITEST
Instruments
Telescopes

Infinity Setting
| TYPE |
CODE |
Focal
length
(mm) |
Tube
diameter
(mm) |
Free
Aperture
(mm) |
Field
of View |
Resolution
for reticle line width 10µm |
TEL 100-38
TEL 100-38R |
3-100-021
3-100-031 |
100 |
38.1 |
30 |
6° |
20
arcsec |
TEL 150-38
TEL 150-38R |
3-100-022
3-100-032 |
150 |
38.1 |
30 |
4° |
14
arcsec |
TEL 200-38
TEL 200-38R |
3-100-023
3-100-033 |
200 |
38.1 |
30 |
3° |
10
arcsec |
TEL 300-38
TEL 300-38R |
3-100-024
3-100-034
|
300 |
38.1 |
30 |
2° |
7
arcsec |
TEL 300-57
TEL 300-57R |
3-100-025
3-100-035
|
300 |
57 |
50 |
1.2° |
7
arcsec |
TEL 500-57
TEL 500-57R |
3-100-026
3-100-036
|
500 |
57 |
50 |
1.2° |
4
arcsec |
TEL 1000-115
TEL 1000-115R |
3-100-028
3-100-038
|
1000 |
115 |
100 |
0.6° |
2
arcsec |
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Focusing Telescopes
Finite Distance Setting
| TYPE |
CODE |
Focal
length
(mm) |
Tube
diameter
(mm) |
Free
Aperture
(mm) |
Field
of View |
Focusing
range |
Resolution
n for reticle line width 10um |
TEL F300-38±25
TEL F300-38±25R |
3-101-024
3-101-034 |
300 |
38.1
|
30 |
2° |
to
±3.6m |
20
arcsec |
TEL F300-57±25
TEL F300-57±25R |
3-101-025
3-101-035 |
300 |
57 |
50 |
2° |
to
±3.6m |
14
arcsec |
TEL F500-57±50
TEL F500-57±50R |
3-101-026
3-101-036 |
500 |
57 |
50 |
1.2° |
to
±5m |
10
arcsec |
TEL
F1000-115±50
TEL F1000-115±50R |
3-101-028
3-101-038 |
1000 |
115 |
100 |
0.6° |
to
±20m |
7
arcsec |
Delivery Kit
The Telescopes designated by the code mentioned in the
table are delivered as complete -ready to work-
instruments:
- Tube mounted objective lens
- Reticle adapter incl. reticle
- standard eyepiece, magnification 16x
Optional Items
- Eyepieces with magnification 10x, 12x and 25x
- Holders
- Eyepiece micrometers
- Additional achromats in mount fitting on the
objective lens tube
- CCD-camera attachement
Ordering Information
To order a telescope please specify:
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Diopter Telescopes
Operating Principle and
Applications
The Diopter Telescope or Dioptometer is a focusing
telescope measuring the power of lenses in diopters. The
results of the measurement can be read off on a graduated
scale.
The Diopter Telescopes have wide applications in the
field of optical testing. Most important applications
include:
- Testing diopter graduation, focusing range and
infinity ("zero") setting of eyepieces
- Measurement of power of lenses
- Testing the astigmatism of telescopes
- Measuring the field curvature of lenses
Product Range and Specification
| The supporting
flange of TRIOPTICS Dioptometers is hexagonal (48
mm wide) and removable. After removing the
flange, the connection thread M 38x1 mm can be
used to attach the Dioptometer to custom holders
or other devices. |
![[ Diagram ]](../../images/testequip/optitest/otest28.gif) |
| TYPE |
CODE |
Focal length
(mm) |
Field of View |
Height H
(mm) |
Measuring
range
(Diopter) |
Graduation
(Diopter) |
| DPT -5/+5 |
3-100-295 |
-/- |
-/- |
75-92 |
-5 to +5 |
0.2 |
| DPT -3/+1 |
3-100-296 |
40 |
13° |
82-90 |
-3 to +1 |
0.1 |
| DPT -1/+3 |
3-100-297 |
-/- |
-/- |
77-83 |
+3 to -1 |
0.1 |
| DPT -5/+5 |
3-100-298 |
-/- |
-/- |
75-92 |
-5 to +5 |
0.1 |
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Dynameter
The Dynameter is used in optical testing for:
- Measurement of the diameter of exit pupil of
optical instruments
- Checking the distance between eyepiece and exit
pupil
- Measurement of magnification of telescopes
| TYPE |
CODE |
Magnification |
Distance
range |
Diameter
range |
Reticle |
| DYN 90 |
3-100-291 |
12 x |
90 mm, div.
0.5 mm |
10 mm |
10 mm with div. 0.1
mm |
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|