OLIVIA Index:
Why
software for obtrusive light design?
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Australia now has standards on the control of obtrusive light and on upward light from roadlighting luminaires. Other countries also have, or are implementing, ordinances controlling obtrusive light. Both Australian standards contain recommended limits for the various light technical parameters which need to be met at the design stage.
The lighting designer is thus now faced with not only designing for the needs of the application (e.g. the tennis court, roadway etc) but also with complying with obtrusive and/or upward light limits.
Lighting design is usually done with the aid of computer programs which can easily handle the repetitive three dimensional trigonometry involved and display the results for evaluation.
However, when trying to determine compliance with obtrusive and upward light limits, conventional lighting design programs are often inadequate.
This is so for a number of reasons;
a) Some of the parameters may not be calculated by the software. E.g: Limits on intensity in particular directions from each luminaire. Disability glare to vehicular or pedestrian traffic. Upward luminous flux.
b) Resolution of internal, interim and displayed results can be inadequate in conventional programs. The numerical range of values can vary widely, e.g. an intensity limit may be 100000 Candelas while an illuminance limit may be 1.0 Lux (0.1 Foot Candles). Calculations and display of lighting parameters by conventional programs may not be able to handle this range of values.
c) Both horizontal and vertical calculation grids are needed for obtrusive light calculations and must be able to be positioned according to the site feature they represent. E.g. A calculation grid may be required which represents the wall of a dwelling which is at some odd angle to the co-ordinate system being used in the design. Application programs do not necessarily have this ability.
d) Calculation grids need to handle more than one light parameter. E.g. a grid representing a window may need vertical illuminance and intensity from each luminaire to be calculated. Some application programs handle only one parameter per run.
e) Design of the application needs to include depreciation factors to ensure
that the parameters will be maintained over the maintenance cycle of the
installation, while obtrusive and upward parameters are initial, i.e. no
depreciation factors applied.
Thus using conventional programs for both the
application and obtrusive parameters becomes tedious as factors need to be
included then excluded depending on the current parameter being calculated.
f) The effect of obstructions needs to be considered. Buildings, walls, fences, trees etc are all likely to affect obtrusive and upward light parameters (and can be used by the designer to advantage in some cases). Application design less frequently requires obstructions to be considered, hence not all programs have this capability.
g) Result evaluation during design requires different
techniques.
Application design is usually evaluated over an area with
average, minimum, and maximum values being used to assess compliance with design
objectives.
Isolines, shaded diagrams etc are often used to evaluate the
pattern to permit design adjustments.
Obtrusive and upward light parameters are maximum limits which must not be exceeded, sometimes at a single point. Only the maximum value usually needs to be compared with a limit.
Isolines and shaded diagrams are of little use in evaluating the pattern
unless individual calculation points which exceed the limit can be
highlighted.
Calculation grids representing roadways (for disability glare
calculations) tend to be long and narrow making pattern evaluation
difficult.
h) Managing all the foregoing during the design process requires specific program techniques.
OLIVIA is now available to meet the needs of both the application design and the obtrusive light compliance.
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OLIVIA is a computer program for designing Exterior Lighting applications
where Obtrusive Light constraints are applicable.
It may also be used for
general lighting design requiring special considerations.
The program is intended for lighting designers.
OLIVIA is designed specifically to meet the design challenges (see: 'Why software for obtrusive light design') outlined. It uses Windows 95 or later to give the designer maximum flexibility in managing the project, viewing results and adapting the design for both the application and obtrusive light control.
OLIVIA can also handle those difficult jobs such as building facade lighting, effect of obstructions, lighting the underside of a horizontal surface, stair lighting, Car Parks for AS1158 etc.
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The programs function is to determine light parameters to 'real' locations in XYZ space.
Locations are set by positioning and orientating 'Planes' which may simulate buildings, roads, or just be for calculation grids.
Waste light, including Upward luminous flux to surfaces, sky and ground from the whole installation may be calculated.
The obtrusive light requirements of Australian Standard AS4282 - 1997 and of ordinances issued by various authorities were used as a basis for development of this program.
Program management is by means of 'windows' running in Windows environment using a 'Mouse' to control most functions.
Calculation methods are those generally accepted by the lighting profession in Australia. E.g. Illuminance determined by the inverse square law and angle of incidence, Threshold increment to the formula in AS4282 - 1997.
Full details of accuracy, rounding, display resolution etc are given in the on-line Help.
Results display uses colour to indicate Pass/Fail of parameters. Values at grid points are coloured according to their compliance with limits set and shown in the 3D Layout View of the installation. The parameter pattern may also be viewed as Isolines.
Printed reports may be customised.
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The main features of the program are shown under 'Features' below.
For a full coverage of all aspects of the program, it is recommended that the
program be downloaded, installed and evaluated.
(Click
here for Download information).
On-line Help covers all aspects of the program.
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Windows environment for ease of project management.
Mouse controlled to
minimise keystrokes.
Calculates any combination of the following lighting parameters per calculation grid:
1) Horizontal Illuminance
2) Vertical illuminance with any horizontal orientation.
3) Vertical illuminance with any horizontal orientation 180 degrees from '2'.
4) Intensity from each luminaire.
5) Threshold Increment for observer at each grid point.
Observer height,
View angles, Windshield Cutoff angle and Adaptation Luminance set by user.
6) Illuminance normal to camera.
User specified camera location anywhere
in XYZ space.
7) Surface Illuminance
8) Diffuse or road surface Luminance.
9) Glare rating to CIE 122 - 1994
Diffuse Luminance calculated for user specified Reflection Factor, Road surface Luminance calculated using CIE road surface reflectance data for user specified observer position.
Other Parameters
1) Waste Light from the total installation.
Waste light determined for Application surfaces, 'other' surfaces, sky and ground.
Upward Waste Light Ratio for each luminaire.
Total emitted Flux and Upward Waste Light Ratio are also calculated.
2) Maximum Upward Intensity
3) Pre-Curfew Intensity to AS 4282 - 1997
'Planes' used to align and position calculation grids. (Up to 1000
planes).
Planes located in anywhere in XYZ space by a single 'anchor
point'.
Planes may have any combination of Rotation, Tilt or Spin i.e.
Horizontal, Vertical or 'User Set'.
Any plane may be designated as 'Opaque',
blocking any light that would otherwise pass through it when travelling from a
luminaire to a calculation point.
Up to 1000 calculation grids (one per plane).
Calculation Grids either
'Application' or 'Obtrusive' with depreciation factors applied as
appropriate.
Any combination of the eight lighting parameters on each
grid.
Calculation grids align with plane surface.
Automatic generation of calculation grid points using user preferences or
manual setting.
Calculation grids set by reference to plane edges. (Program
determines calculation points XYZ positions).
Calculation grid may extend
beyond plane edges.
Calculation grid may be on front or back of
planes.
Calculation grid set by number of points (maximum 201 points 'across'
or 'up').
Single row of calculation points (or a single point) allowed.
Colour display of luminaire/plane layout with user set view angles and
zoom.
Colour display of Pass/Fail results and Limits.
Colour calculation
points or Isolines of each parameter (Intensity shown for each
luminaire).
Coloured calculation points or Isolines using 'limits' or 'no
limits'.
Colour shaded current parameter can be shown on 3D layout.
View rotation about XYZ origin or current plane.
Automatic centring of current plane.
Automatic centring and view orientation to give best view of plane.
Luminaires and Planes may be selected from the layout display using the mouse.
Luminaires positioned anywhere in XYZ space.
Luminaire Aiming by XYZ (no
limitations).
Luminaire Aiming by angle ie. Rotation, Tilt, Spin. Range: -360
to +360 degrees
Both aiming systems parameters displayed.
Either aiming
method may be used at any time.
Up to ten luminaire types.
Up to 1000
luminaires (up to 4000 with mirroring)
Individual luminaires may have 'mirror' luminaires in X, Y, XY or '3XY' (all
three).
Luminaires may be individually switched On or Off.
Customizable reports.
Users selected inclusions for text and graphics.
Graphics to scale. Scale determined by program or user set.
Graphics allow user selected Isolines or points.
Photometric data read directly from file in IESNA or CIE27 format
(automatically detected). No library management or special file directories
needed.
IESNA formats 1986, 1991, 1995 and 2001 correctly handled.
Sample projects are included in the 'Setup'
Extensive checks of photometric data with 'plain English' messages if data
not valid.
Dynamic display of changes (ie. the layout screen updates with any
data change).
Printed reports user customised from simple summary to
Intensity listings, colour graphics etc.
Extensive error handling with 'graceful' suspension of operations on
error.
On-line manual for Help at the click of the mouse button.
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The program is optimised to use the capabilities and other features of Windows 95 to XP.
VISTA Users
This program is intended for use with Microsoft Windows operating
systems 'Windows 95' to 'Windows XP'.
RAYFORGE Services does not offer support for the program
operating under 'Vista'.
However, the program will usually operate under 'Windows Vista' but the Help
file may not be accessible.
This is because Microsoft no longer supports the previous Windows Help file
format
and does not permit third party software developers to distribute a program
which enables the use of the Help files.
Microsoft makes the required program available to users via:
http://www.support.microsoft.com/kb/KB917607
Computer Hardware Required:
1) IBM or compatible PC running Windows 95 to XP.
2) Mouse or equivalent pointing device operating under Windows.
3) VGA (or better), colour card and monitor minimum 1024 x 768 pixels. 256 colour minimum.
4) Hard disk: Approximately 6Mb required for program and associated files.
5) Compact Disk: One compact disk drive needed to load the program.
(Not
required if downloading from this web page).
6) Printer: Printer operating under Windows (not DOS).
Colour graphics
printer to print colour graphics of calculation grids.
Non graphic Black and
White printer is sufficient for text reports.
7) Memory: Dependent on size of projects and on other Windows applications running at the same time. 32Mb minimum, 64Mb or greater recommended.
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Available now from this page, Free (for the purposes of evaluation). (Click here for Download)
Will operate in demonstration mode (fully functional except that projects cannot be saved).
Note: The demonstration mode has an expiry date built in. The demonstration mode cannot be used after this date although it can still be made fully functional by entering a registered user name and serial number. (No re-installation necessary).
To purchase; send the purchase price in Australian dollars by bank cheque, draft or money order payable on an Australian bank together with a preferred user name to:
RAYFORGE SERVICES
EMail: rayforge@ozemail.com.au
A serial number will be supplied on receipt of payment.
Entering the User
name and Serial Number into the registration form which appears at program
startup will make the program a fully operational, licensed copy. (No
re-installation necessary if already installed after 'download').
$990 (Australian) for a single user licence for purchasers within Australia (Includes GST).
$900 (Australian) for a single user licence for purchasers outside Australia (No Goods and Services Tax payable).
Discounts for multiple copies (Contact RAYFORGE Services).
EMail: rayforge@ozemail.com.au
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All the necessary files are compressed and contained in a single self
extracting file named olsetup.zip. This file needs to be downloaded to your
computer and extracted.
When extracted, the setup program can be run using
the instructions in the README.TXT file.
Instructions step by step:
1) Make a new directory on your hard disk (e.g. C:\Oltemp).
2) Click on the Start Download button.(below these instructions)
3) When the messagebox appears, choose 'Save to Disk'.
4) When the drive/directory boxes appear, select your new directory (e.g. C:/Oltemp) as the destination.
5) A single file named olsetup.zip should start downloading to this
directory.
The file size is about 3Mb.
(When download has finished, the remainder of this procedure can be done offline).
6) Using Windows file manager, find olsetup.zip and extract all files to the same directory.
7) Use Notepad or another text editor to view file README.TXT for instructions on running the setup program.
8) After the setup program has been successfully run, the temporary directory and all the files in it may be deleted.
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RAYFORGE SERVICES A.B.N. 97 685 617 552
EMail: rayforge@ozemail.com.au
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