LED luminaire range αbet with variable lens technology for high-precision illumination. The heart of the luminaire is the variable focus unit. Comparable with a camera lens system different beam angles can be realized via a stepless fine adjustment. The individual heat sink ensures maximum thermal efficiency with minimum material usage and provides a high recognition of the αbet series. The range includes recessed spots, wallwasher and downlights in round and square. The luminaires can be mounted in single or group arrangements and can also be installed flush to the ceiling. All components are separable and individually recyclable.