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(56) · also written as a run, 56a xxx 56n

Incident Light Rays

Where it is first named

… 278, the incoming incident light rays 56a xxx 56n (80° arc) will be transmitted as light rays 57 and 57a to a
— Light Guide Lens

How it is written

  • (incident light rays 56a) 1×
  • (incident light rays 56n) 1×

56a xxx 56n is Meyer's shorthand for a run of the same thing: 56a is the first, 56n the last, and the x's stand for however many lie between. Every stage of the run is this one numeral.

Drawings 9

Where it is named · 2

Light Guide Lens 2×

  1. incident light rays (incident light rays 56a)

    … 278, the incoming incident light rays 56a xxx 56n (80° arc) will be transmitted as light rays 57 and 57a to a

    Read it there → · on Figure (278)

  2. incident light rays (incident light rays 56n)

    … 278, the incoming incident light rays 56a xxx 56n (80° arc) will be transmitted as light rays 57 and 57a to a

    Read it there → · on Figure (278)