This document specifies general optical test methods for the measurement of the relative irradiance in the image field. This document is applicable to optical imaging systems in the optical spectral region from ? = 100 nm to ? = 1 µm. Theoretical reflections and the comparison with the calculation apply only to optical systems. This document is applicable to rotationally invariant and rotationally variant systems; anamorphic systems, for example, are included. Telescopic systems are also included. The title of this document refers to the relative irradiance in the image field, but this document is also applicable to determination of the relative radiant power. As far as measurements are concerned, this document is also applicable to electro-optical systems. The two methods described differ particularly in the influence of veiling glare.
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Quantities, symbols and units
5 Designation
6 Description of measurement procedures
6.1 Factors influencing the relative irradiance
6.2 Classification of the measurement procedures
6.3 Brief description of the irradiance measurement
6.4 Brief description of the radiant power measurement
7 Measurement of relative irradiance
7.1 Description of the measuring set-up
7.2 Measurement
8 Measurement of radiant power
8.1 Description of the measuring set-up
8.2 Measurement
9 Presentation of results
9.1 Tabular form
9.2 Graphical representation
10 Test report
11 Examples
11.1 Measurement of relative irradiance by procedure A1 (see Figure 4, Table 4)
11.2 Example of the representation of curves of equal relative irradiance against the image field (see Figure 5)