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Abstract

This thesis presents an exposition of colour fundamentals and their application to the development of a new instrument for colour measurement.

Sensation and perception of colour vision are considered both from the physiological and the psychological aspects. The physical aspects of colour stimuli is also considered. A number of industrial, commercial and research applications of colour is discussed.

The historical development of colour vision theories, together with the laws of colorimetry and colour matching, are given particular emphasis. The mathematics of colorimetric transformations is described in some detail as a prelude to the definition of the standard observer and the C.I.E. system of colour specification. The transformations to obtain all-positive distribution coefficients is also described in some detail.

Methods of colour measurement and specification discussed, include naming, colour atlases, visual colorimeters, photoelectric colorimeters and spectrophotometers. The operation of specific types of subtractive and additive colorimeters are described. The disadvantages of existing colorimeters and spectrophotometer— computer combinations are outlined. The advantages of the new instrument over the existing systems provide enough justification for its introduction. A number of applications where the new colorimeter has obvious advantages is described.

The description of the colorimeter is considered by following through each major component as the design evolved. Some problems that arose during the development stages are analysed. Photographs of various sections of the colorimeter are included.

Finally, the performance of the spectrocolorimeter is discussed. Its precision and accuracy are firstly considered from the spectrophotometric aspect and then from the colorimetric aspect.
This is done through the evaluation of the errors normally associated with the calibration of an insturment - errors in zero, range sensitivity and non-linearity.

An extensive coverage of the properties of solid state photoelectronic devices is given in an inset in the form of a monograph. In this monograph, the electrical and optical properties of semiconductors are covered extensively. Noise, amplification, speed of response and other limiting parameters are examined and then their ultimate sensitivity compared. A number of practical applications of photoelectronic devices is also included.

Publication Type:	Thesis (Doctoral)
Subjects:	Q Science > Q Science (General) R Medicine > RE Ophthalmology T Technology > T Technology (General)
Departments:	School of Health & Medical Sciences > Department of Optometry & Visual Science School of Health & Medical Sciences > School of Health & Medical Sciences Doctoral Theses Doctoral Theses

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