Diopter telescopes

Diopter telescopes are adjustable focus telescopes that serve the measurement of optical power of lenses in diopter. The measuring result can be directly read from the diopter graduation.

Notes on ordering

In case of order please note the following hints:

  • The diopter telescope is equipped with an eyepiece f=14.7 mm but can be equipped with eyepieces f=25 mm or f=10 mm on request. 

Application examples:

  • Fast testing of optical power
  • Testing the diopter graduation and infinity adjustment of eyepieces
  • For additional enlargement on telescopes, o.g. when adjusting reticles
  • As reading telescopes in the negative distance range
Ord.-No. Description Measuring range Scale division Field of view
at  ∞ 		Focal length
233 202 Diopter telescope ±1.5 +1.5 to -1.5 dpt 0.25 dpt 6° 90 mm
Ord.-No. Description Measuring range Scale division Field of view
at  ∞ 		Focal length
233 212 Diopter telescope +6.0/-3.0 +6.0 to -3.0 dpt 0.20 dpt 11° 50 mm
233 222 Diopter telescope +0.2/-5.8 +0.2 to -5.8 dpt 0.20 dpt 11° 50 mm
233 234 Diopter telescope ±5.0 +5.0 to -5.0 dpt 0.10 dpt 13° 40 mm

⇐ Back