The luminosity constraint is a very precise relationship linking the power released by the Sun as photons and the solar neutrino fluxes. Such a relation, which is a direct consequence of the physical processes controlling the production and the transport of energy in the solar interior, is of great importance for the studies of solar neutrinos and has a special role for the search of neutrinos from the CNO cycle, whose first detection with a 5σ significance has been recently announced by the Borexino collaboration. Here we revise the luminosity constraint, discussing and validating its underlying hypotheses, in the light of latest solar neutrino and luminosity measurements. We generalize the current formulation of the luminosity constraint relation so that it can be easily used in future analysis of solar neutrino data, and we provide a specific application showing the link between CNO and pp neutrino fluxes.

所述光度约束是连接由太阳作为光子和太阳中微子通量释放的功率的非常精确的关系。这种关系是控制太阳内部能量的产生和传输的物理过程的直接结果，对太阳中微子的研究非常重要，并且对于从CNO循环中搜索中微子具有特殊作用。 ，其首次检测到5σBorexino合作最近宣布了重要意义。在这里，我们根据最新的太阳中微子和光度测量来修改光度约束，讨论并验证其基本假设。我们对当前的光度约束关系公式进行了概括，以便可以将其轻松用于太阳中微子数据的未来分析中，并且我们提供了一个特定的应用程序，显示了CNO和pp中微子通量之间的联系。