[RWebb]

if it's extra heat, then yes -- assuming the blinds are on the inside

solar insolation can be divided into long wave and short wave - the LW will not come thru the glass; the SW will

once inside (say on the blinds) it will hit them and heat them up; the (hotter) blinds will the re-radiate more LW radiation and it will be unable to get out thru the glass

this is why your car heats up so much in the sun -- it is like a greenhouse effect

if the glass is made opaque to SW, then it cannot get in to begin with

- what we would really like, is windows that only let a very narrow range of light (visible part of the SW) thru (and maybe only in one direction); with the ability to tune the glass's transmissivity for the rest of the SW and the LW spectrum based on temperature