Hello and welcome. When you say minimum do you have auto turned off? When my brightness is turned all the way down with auto off,  it is almost too dark to see.  Ambient lighting can be used to help as well.

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Thanks for the welcome. Yes, the minimum with auto turned off is still too bright. Well its not really too bright, but I would prefer it lower. And since my battery doesn't last very long, and the main drain is the screen, and I could tolerate a significantly less bright screen, why not?

Absolutely.  I'm an astronomer, so I needed a way to dim my screens.  I use ScreenDim Pro by Omega Centauri Software.  It lets you pre-select two levels of daytime brightness/contrast combinations, and three levels of nighttime combinations.  It does not require your Android device be rooted.

My Daytime 1 choice is below the minimum OEM brightness.  I set my Nighttime 1 level dim enough not to disturb my wife when I'm reading in bed.  My other Nighttime settings are for the astronomy field.

Thanks for the help. This application somewhat helps. It seems it really just modifys the color rather than actually reducing backlight intensity (I can tell because the top bar/notifications remain the same). Its still better than it was before but if there was a method to actually reduce the backlight, that would be cool.

EDIT: I see now there actually is a backlight setting but it doesn't set it any lower than before.