The aim of this diploma thesis is to design a suitable reflector concentrating a light beam into a circular hole in a gobo. The light beam behind the screen should have good efficiency and at the same time good homogeneity. For the reflector design and analysis a software for designing optical systems called LightTools was used. The reflector was designed by six different methods. Several smooth and several faceted reflectors were designed. The selected reflector was analyzed in combination with a varifocal lens. For selected reflector was designed mechanical store with respect to the anticipated operating conditions. This thesis serves as the basis for the producing of the reflector.

The main tasks of the thesis lie in summary of present state in Human Centric Lighting field, in the optical design of luminaire and in practical verification of the proposal. The design is developed in software LightTools and for the verification of functionality the software Dialux EVO is employed. The luminaire is designed primarily with respect to the influence of light on the man and the physiological, psychological and behavioural responses in humans. The thesis is created in cooperation with the company Robe Lighting s.r.o. The proposal of the luminaire corresponds to the current state of knowledge in the area of light influence on humans. The designed luminaire in the trend HCL is distinguished by the high quality of emitted light but also with higher costs of the operation.