Diopter Telescope
The Diopter Telescope or Dioptometer is a focusing telescope measuring the power of lenses in diopters. The measurements with Diopter Telescopes include following steps:
- The eyepiece of the Diopter Telescope is rotated until its reticle is seen sharp and clear. The focusing ring is set to zero.
- The Diopter Telescope is placed with its supporting flange on the eyepiece or the telescope under test. The eyepiece of the telescope under test is rotated until its reticle is seen sharp and clear. This is the zero setting of the eyepiece.
- Further measurements are made by rotating the eye-piece under test to the next graduation and focusing the Dioptometer correspondingly. The reading is done directly on the diopter graduated scale.
Key Features:
- The supporting flange of TRIOPTICS Dioptometers is hexagonal (48 mm wide) and removable. After removing the flange, the connection thread M 38×1 mm can be used to attach the Dioptometer to custom holders or other devices.
- The size of the smallest division is important for accurate reading. All TRIOPTICS Dioptometers (except for 3-100-298) have large graduations and permit easy reading and accurate estimation at half of the smallest division. The eyepieces are interchangeable and can be adapted to custom needs.
Applications:
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 lense
| TYPE | Focal length (mm) | Field of View | Height H (mm) | Measuring Range (Diopter) | Graduation (Diopter) |
|---|---|---|---|---|---|
| DPT-5/+5 | 40 | 13 | 75-92 | -5 to +5 | 0.2 |
| DPT-3/+1 | 40 | 13 | 82-90 | -3 to +1 | 0.1 |
| DPT-1/+3 | 40 | 13 | 77-83 | !ERROR! unexpected operator '+' | 0.1 |
| DPT-5/+5 | 40 | 13 | 75-92 | -5 to +5 | 0.1 |
Optitest® Upgrades & Accessories
In addition to the Optitest® collimators, telescopes and autocollimators, TRIOPTICS offers a large range of opto-mechanical accessories, often required for certain standard applications.
Holders
Clamp Fixture
- Clamp fixture D38
- Clamp fixture D57
- Clamp fixture D115
Adjustable Holder
- Adjustable holder D38
- Adjustable holder D57
- Adjustable holder D115
- Adjustable holder D140
V-Prism (magnetic prism):
- V-Prism (magnetic prism) D20-D50
- V-Prism (magnetic prism) D50-D150
Stands
- Manual Stand for D38
- Manual Stand for D57
- fixture for wedge measurement
- Stand
Clampfixture
Adustable holder
Mirrors
Mirrors and optical flats in mount:
- Mirrors in mount D38/D57
- Mirrors in mount D115/D140
- Optical flat in mount for D38/D57
- Optical flat in mount for D115/D140
Adjustable mirrors and optical flats in mount:
- Adjustable mirrors for D38/D57
- Adjustable mirrors for D115/D140
- Adjustable optical flat for D38/D57
- Ground plate
- Ground plate with stop bar
Deflecting mirror:
- 45° deflecting mirror for D38
- 45° deflecting mirror for D57
- 45° deflecting mirror for D115
- Penta Prism 50mm +/-1´ in holder
- Master Penta Prism in holder, Aperture 1 3/4 inch x 1 7/8 inch
- Master Penta Prism in holder, Aperture 1 3/4 inch x 1 7/8 inch
- 90 degree optical square with adjustable mount
45° deflecting mirrors
Alignment Tools
Laser prealignment tool:
- Laser prealignment tool D57
- Laser prealignment tool D115/D140
Viewfinder prism:
- Viewfinder prism
Calibration Tools
Reference prism:
- 90° reference prism in mount
Polygons:
- Polygon 12 sides in holder, 5 second accuracy
Calibration wedges:
- Calibration wedge 10 arcmin
- Calibration wedge for TriAngle UltraSpec 10 arcmin, with integrated band-pass filter
12 sided polygon
Other Accessories
- Tool for rotary axis measurement
- precision level
- remote control for TA
