PRODUCT APPLICATION
- Used to measure the exit pupil diameter and exit pupil distance of the telescopic system.
- Used to measure the magnification of the telescopic system.
USAGE METHOD
1.Set the diopter scale of the optical instrument being tested to zero, and adjust the eyepiece diopter of the magnification gauge so that the user can clearly observe the reticle markings through the eyepiece.
2.Use the mounting base on the magnification gauge to place it on the eyepiece of the optical instrument under test, ensuring that the optical axes of both are roughly aligned.
3.Slide the inner tube of the magnification gauge along its outer cylinder, adjusting it until the initial exit pupil of the optical instrument is clearly imaged within the magnification gauge. Ensure that the pupil image is centered in the objective lens, with its diameter coinciding with the reticle markings. At this point, the exit pupil diameter (D’) of the tested optical instrument can be accurately read from the reticle.
4.At the position where the exit pupil diameter is measured, a reading (A) can be obtained from the window on the outer tube of the magnification gauge. Then, move the microscope until it is focused on the final surface of the eyepiece of the optical instrument being tested. Through the magnification gauge, the dust and debris on this surface can be clearly seen. At this point, another reading (B) can be obtained from the window on the outer tube of the magnification gauge. The difference between the two readings is the exit pupil distance (p’) of the optical instrument being tested, i.e., p’ = A – B.
5.The magnification (Γ) of the telescope system is calculated using the following formula:
Γ = D / D’
Where: Â Â Â Â D is the entrance pupil diameter (effective aperture of the objective lens), Â Â Â Â D’ is the exit pupil diameter.
DIMENSIONS(unit:mm)
