marginal ray वाक्य
उदाहरण वाक्य
मोबाइल
- The-number describes the light-gathering ability of the lens in the case where the marginal rays on the object side are parallel to the axis of the lens.
- Where is the working-number, is the lens's magnification for an object a particular distance away, is the pupil magnification, and the NA is defined in terms of the angle of the marginal ray as before.
- Also, for endoscope applications, where small tube diameter is desirable, most of the tube is filled with glass, with thin air gaps to allow for powered surfaces; because marginal ray angle is smaller at a given numerical aperture the higher the index of refraction, this allows the relay to have higher NA for a given diameter.
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