The LS-OK30 light source can be fitted with a 5W to 100W LH type halogen lamp. The lamp is placed within a diffuse reflecting hemispheric reflector. This improves the luminous flux efficiency and the light coupling homogeneity. At the lamp foot, an active air current is used for heat dissipation purposes. The LS-OK30 can be attached onto the UMPF-LSOK30 port frame either with or without accessories.