Main features of CYPELUX EN


CYPELUX EN provides normal artificial lighting for each space of the building.

The lighting used in CYPELUX EN analysis can be defined in several ways (including its photometric curves):

  • Imported from the CYPELUX EN lighting library.
  • User-defined by means of data provided by the manufacturer.
  • Imported from lighting files in EULUMDAT format (standard format in Europe for photometric data –extension "ldt") and IES (standard format in North America for photometric data –extension "ies"). These files are provided by the manufacturers and can be imported by users with no need to enter the data manually.

Once the type of lighting is defined, the program allows users to save the photometric data in a file so they can be imported directly into another CYPELUX EN project.

Automatic distribution

The program allows lighting distributions to be generated automatically in order to achieve more lighting uniformity on the workplane and to save in installation costs. Users can select distributions that follow circular or linear patterns and adjust the parameters that define the selected disposition, such as the number of lightings or their orientation.

Maintenance factor

CYPELUX EN includes an assistant able to deduce the maintenance factor of the lighting located in indoor spaces based on the method proposed in CIE 97:2005 (Guide on the maintenance of indoor electric lighting systems). For this analysis, the program considers loss factors related to the environment and to the type of lamps and lighting. These can be inserted directly by users, or determined automatically according to the features of the installation, as stated in guide CIE 97:2005.


CYPELUX EN analyses the illuminance produced by the effect of natural light. To obtain these values, it is necessary to associate the job in CYPELUX EN with a BIM model that contains, at least, the geometrical definition of the building.

In order to carry out the analysis, it is necessary to specify the features of the glazed openings ("Transmission grade" and "Refraction index") and to describe the sky in the scene via the "daylight" option of the program’s toolbar. Inside this panel, the parameters related to the daylight calculation are specified, such as the sky type according to the CIE standard, the location of the building and its orientation. The latest might be obtained from the BIM model, if existing.

Defining zones

To justify compliance with the EN 12646-1 standard, the necessary characteristics of the spaces or the indoor zones must be defined.

The zones can be inserted into the program directly by users or by importing an IFC file(IFC4 and IFC2x3) format generated by CAD/BIM programs. To facilitate the manual insertion of the areas, CYPELUX EN allows the use of drawing file templates in DXF, DWG, DWF, JPG or BMP format.

Once the zone type is defined, its properties can be saved in a file so they can be imported directly into another CYPELUX EN project.

Radiance lighting simulation engine

CYPELUX EN uses the Radiance lighting simulation engine developed by the Lawrence Berkeley National Laboratory in order to calculate the lighting produced by the artificial lighting and daylight. This calculation methodology allows for more accurate results for indirect illuminance levels to be obtained, discretisation in sources of non-punctual light to be carried out, and realistic light scenes to be viewed, among others.

Scene rendering

Thanks to the inclusion of the Radiance analysis engine, the effect of the lighting produced by installing artificial lighting or natural light can be represented in a realistic image. To do this, users have to define the location of the point of view and the features of the rendering.

Exporting to FIEBDC-3

CYPELUX EN generates a file with the quantities of the materials used in the lighting installation in FIEBDC-3 format (a Spanish exchange format) that can be imported by bill of quantities programs such as Arquimedes.


CYPELUX EN carries out the following calculations:

Normal artificial lighting

  • Calculation of the level of illuminance of the installation, measured at a workplane level.
  • Calculation of the energy efficiency value of the installation (VEEI).
  • Calculation of the glare level based on the UGR defined in code CIE 117:1995 (Discomfort glare in interior lighting).

Natural lighting

  • Calculation of the lighting level produced by the effect of daylight measured at a workplane level.
  • Calculation of the daylight factor measured at a workplane level.

Visualisation of the results and checking

After the analysis, CYPELUX EN can display results on screen for (normal and emergency) illuminance, glare and daylight factor of the areas that intervene with contour lines, isovalue lines or numerical value.

Moreover, when placing the cursor over a zone, the program shows the following parameters of the space on screen:

  • Average maintained horizontal illuminance
  • Total power installed
  • Energy efficiency value of the installation (VEEI)
  • Unified glare rating (UGR)
  • Average daylight factor

Generated documents

Once the analysis has been carried out, CYPELUX EN is able to automatically generate the reports and drawings required to justify the compliance with the EN 12464-1 standard.

Technical specifications

CYPELUX EN generates a justification of the EN 12464-1 standard for each particular area and a general report of the project.

The technical specifications verify:

  • Average maintained horizontal illuminance in the workplane
  • Unified glare rating (UGR)
  • Illuminance uniformity
  • Colour rendering index of the lamps

Calculation annex

CYPELUX EN also generates a calculation annex where, in addition to the calculation values, the features of the spaces with their normal and emergency lighting are detailed.

  • Natural and artificial lighting
    • Disposition of the lighting
    • Calculation of illuminance and glare
    • Position of the worst case values
    • Contour lines map

  • Photometric curve

Installation drawings

The program generates detailed drawings of the lighting installation and provides users with a configuration tool that allows them to indicate which elements must appear in each layout.

Layouts can be directly printed from CYPELUX EN and exported to different formats (DWG, DXF, PDF, XPS).

User license

In order for CYPELUX EN to be able to carry out the analysis according to PART I (Indoor workplaces) of standard EN 12464-1:2011, the user license must include the "Interior lighting check in accordance with EN 12464-1 standard" part.