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Vision, Colour and Photometry

Unit code: PCB121
Contact hours: 40
Credit points: 12
Information about fees and unit costs

This is the first unit in the lighting suite of courses and aims to prepare students with the necessary grounding for future units in the course. All lectures in units that follow this will assume a good knowledge and understanding of the concepts and principles presented in this unit.


Availability
Semester Available
2013 Semester 1 Yes

Sample subject outline - Semester 1 2013

Note: Subject outlines often change before the semester begins. Below is a sample outline.

Rationale

To work in any area of the lighting industry, whether undertaking design work, reading articles and specifications, or communicating ideas and concepts of lighting, requires an understanding of the science and language of lighting, photometry and vision, and an appreciation of how information you are dealing with was obtained. The basis of the language of lighting and the formation of colours is in the anatomy of the eye and an understanding of the fundamentals of this language is just as important for the manufacturer or lighting designer as it is for the sales person.

Aims

This is the first unit in the lighting suite of courses and aims to prepare students with the necessary grounding for future units in the course. All lectures in units that follow this will assume a good knowledge and understanding of the concepts and principles presented in this unit.

Objectives

On completion of this unit you should be able to:
1. Understand the concepts and terminology by which we describe and measure light, and the concept of colour and the different systems (qualitative and quantitative) for classifying colours, and be able to perform calculations relevant to these areas,
2. Understanding the metrics used in Australian and international Standards relating to photometric and colorimetric systems.
3. Set up for and undertake meaningful measurements of the different lighting quantities and be able to assess the degree of uncertainty of your measurement, based on background and possible environmental conditions existing at the time.
4. Perform photometric and colorimetric calculations and be able to critically assess the result in terms of their practical reality.
5. Demonstrate through assignments and effective communication skills, a qualitative understanding of the relationship between the physical properties of materials and light sources with different lighting effects.

Content

Topics include:
· Preparatory mathematics and optics associated with lighting design
· the definition and determination by measurement of the photometric quantities: luminous flux, luminous intensity, illuminance, luminance, reflectance and transmittance; as well as calculations involving: reflective surfaces, inverse square law, cosine law, and inter-reflections,
· Munsell and CIE Colour Systems, colorimetric calculations, chromaticity coordinates Yxy, L*A*B*, Luv, correlated colour temperature and colour rendering indices,
· the integrating sphere, goniophotometry, distribution photometry, graphical representations of photometric data, measuring instruments, accuracy and repeatability, and
· the physiology of the eye and light detection, contrast sensitivity, colour vision, adaptation, brightness and lightness, and the processes involved in image detection and recognition.

Approaches to Teaching and Learning

In this unit you will have a combination of formal lectures coupled with a significant component of laboratory exercises associated with photometric and colour measurement in applied situations. The basic reference material will be made available on the QUT Blackboard website for the unit, allowing the lecture periods to take more of an interactive discussion and problem-solving format.
Students will also undertake a written assignment on some photometric procedures.
The practical work will be carried out in the QUT NATA-registered Photometric Laboratory and will include work-place type measurements. You will also undertake some field work measurement exercises of lighting installations.
This unit is being taught concurrently with a postgraduate offering of the same subject. University policy permits that postgraduate and undergraduate students attend the same lectures. Separate discussion groups will be provided for undergraduate students where student numbers allow. As an undergraduate student you will be required to complete separate assessment tasks.

Assessment

In this unit you will be assessed primarily on your understanding of the concepts of lighting design and the qualitative assessment of the lighting of a space, and your ability to critically analyse a lighting design.
For successful completion of this unit you will be expected to obtain an acceptable level of achievement in all areas of assessment.Students will receive individual feedback on their written assignments and computer assignments as part of the grading of the assignment.

Assessment name: Laboratory/Practical
Description: Formative and summative: Reports on on-going practical exercises.
Internal Students: Due date is End of Week 10.
Relates to objectives: 2
Weight: 30%
Internal or external: Both
Group or individual: Individual
Due date: See Description

Assessment name: Examination (Theory)
Description: Open book Summative: Understanding of concepts, problem solving and calculation format.

Due Dates:
External Students: Due date is end of semester.
Internal Students: Due date is End of Week 10.
Relates to objectives: 1 and 2.
Weight: 30%
Internal or external: Both
Group or individual: Individual
Due date: End of Wk 13

Assessment name: Essay
Description: Formative and summative on-going assignment on issues of lighting assessment
Internal Students: due date is end of Week 12.
Relates to objectives: 1 and 5.
Weight: 40%
Internal or external: Internal
Group or individual: Individual
Due date: See Description

Academic Honesty

QUT is committed to maintaining high academic standards to protect the value of its qualifications. To assist you in assuring the academic integrity of your assessment you are encouraged to make use of the support materials and services available to help you consider and check your assessment items. Important information about the university's approach to academic integrity of assessment is on your unit Blackboard site.

A breach of academic integrity is regarded as Student Misconduct and can lead to the imposition of penalties.

Resource materials

1. Julian W (1999) Lighting: Basic Concepts, University of Sydney
2. Lighting and Human Performance II, EPRI Technical Report 1006415
3. Pritchard DC (1992) Lighting, 5th Edition, Longman
4. IESNA Lighting Handbook, 9th Edition, Editor M Rea
Students may make use of internet resources for general information on relevant products and materials (e.g. product catalogues produced by a manufacturer).

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Risk assessment statement

There are no out of the ordinary risks associated with this unit.

Disclaimer - Offer of some units is subject to viability, and information in these Unit Outlines is subject to change prior to commencement of semester.

Last modified: 19-Oct-2012