Insert light field for suspended ceiling systems with visible T-profile module (1200 x 300), homogeneous luminous surface, no UV and heat radiation, tool-free installation, high ease of maintenance, white luminaire housing made of sheet steel, external placement of the control gear on the luminaire body, luminaire ready to plug in to the control gear, operation with or without DALI function possible, opal acrylic glass diffuser, control gear (LED converter) included (with DALI dimming)