1. A straightforward, uncomplicated goal or aim that is easy to understand and achieve
The team's simple objective is to win the next match.
O objetivo simples do time é vencer a próxima partida.
2. In optics, a lens or lens system with minimal complexity used to magnify or focus light
The microscope uses a simple objective lens for basic observations.
O microscópio usa um objetivo simples para observações básicas.