OPTICAL DESIGN K.F. Chan (Mr.) MEBS 6002 2008 UNIVERSITY OF HONG KONG Faculty of Engineering M.Sc.(Eng) in Building Services MEBS 6002 Lighting Engineering OPTICAL DESIGN What is the difference between lamp and luminaire? K.F. Chan (Mr.) MEBS 6002 2008 All rights reserved

LIMINAIRE IS TO A) Hold the lamp B) Connect the lamp to the power supply so as to energize the lamp C) Control the light emitted by the lamp D) Change the quality of the light produced E) Provide shielding to prevent glare F) Protect the lamp and control gear in hostile environment G) Provide a fixture of satisfactory appearance H) Protect users from dangerous radiation and/or from flying pieces of lamps that rupture violently K.F. Chan (Mr.) MEBS 6002 2008

LIMINAIRE Keyless bare incandescent lamp holder K.F. Chan (Mr.) MEBS 6002 2008

LUMINAIRE Keyed porcelain incandescent lamp-holder, with pull chain and grounded receptacle. For mounting onto surface or concealed outlet box K.F. Chan (Mr.) MEBS 6002 2008

Lamp-holder for mounting onto outlet box UNIVERSITY OF HONG KONG Faculty of Engineering M.Sc.(Eng) in Building Services MEBS 6002 Lighting Engineering Lamp-holder for mounting onto outlet box BS4662 BESA box K.F. Chan (Mr.) MEBS 6002 2008 All rights reserved

Typical bare single fluorescent fixture UNIVERSITY OF HONG KONG Faculty of Engineering M.Sc.(Eng) in Building Services MEBS 6002 Lighting Engineering Typical bare single fluorescent fixture Wall mount vs. ceiling mount K.F. Chan (Mr.) MEBS 6002 2008 All rights reserved

K.F. Chan (Mr.) MEBS 6002 2008

Typical multi-lamp surface mounted fixture K.F. Chan (Mr.) MEBS 6002 2008

K.F. Chan (Mr.) MEBS 6002 2008

CONSTRUCTION A) Bulb-shaped lamps Normally symmetrical around the vertical axis, can be spun metal or blown B) Tubular lamps Normally linear shapes, formed by bending, pressing, extruding, sheet metal or plastics K.F. Chan (Mr.) MEBS 6002 2008

Suspended lamp-holder K.F. Chan (Mr.) MEBS 6002 2008

Swivel joint socket mounted lamp-holder K.F. Chan (Mr.) MEBS 6002 2008