We get it.
You have an area in your home where you need it to have privacy from light. You don’t want the light to seep through as you need to create an atmosphere of complete darkness (or as close to complete).
There are options available for you, like the installation of:
Though it may still allow some light into the room.
Plantation Shutters are modern in look, and easily adjustable to allow light to filter into the room when needed, and angle however you want, whenever you want. It is more of an effective way to create a barrier from light.
Pivot Arm/Auto Lock Awnings.
Awnings are a really effective way to block out light, from an external perspective, by allowing you to adjust the awning at a height to best suit the amount of light you’d want to filter in. Have the arms up for full light, mid-way for partial light and all the way down to block as much as possible.
When building or taking into account the renovation of space you need to blanket in darkness and/or reduce noise – Macarthur Home Improvements has what you need.