本文件提供了采光口的设计过程，以确保室内视觉环境的可持续性原则。采光口的设计过程包括: -建筑物内部的日照时数； -采光口与可居住房间墙壁面积之比； -采光口与可居住房间的建筑面积之比； -根据人类视觉需求和阳光范围，适当的室内日光水平； -建筑物内的日光控制系统； -热舒适性、热增益和能源效率。 本文件适用于新建建筑和现有建筑改造的建筑环境设计。

This document provides a design process for daylight openings in order to ensure the principle of sustainability in the indoor visual environment. The design process for daylight openings includes the consideration of: — sunshine duration in the building interiors; — daylight opening ratio to the wall area of a habitable room; — daylight opening ratio to the floor area of a habitable room; — appropriate levels of indoor daylight based on human visual needs and the extent of sunlight; — daylight control systems in the building; — thermal comfort, thermal gains and energy efficiency. This document is applicable to building environment design for new buildings and the retrofit of existing buildings.