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Which type of mirror to use



  • Hi Everyone!

    I have started developing my mirror. However I couldn’t find exact information about which glass will look the best. Should it be acrylic or anything else? The transmittance should be 50/50 or more like 70/30?

    Thanks!


  • Project Sponsor Module Developer

    @radokristof Between glass and acrylic, if you have a smaller mirror, then it probably doesn’t matter, and acrylic should save you a bit of money. On a larger mirror, you might see some distortion due to the acrylic flexing.

    Transmittance depends on the brightness of your room. If the location of your mirror will get a lot of natural light, then you’ll want a higher level of transmittance. If it’s in a darker location, then 20 - 30% transmittance will be fine.


  • Module Developer

    @j-e-f-f said in Which type of mirror to use:

    Transmittance depends on the brightness of your room. If the location of your mirror will get a lot of natural light, then you’ll want a higher level of transmittance. If it’s in a darker location, then 20 - 30% transmittance will be fine.

    I can’t really agree on transmittance. Isn’t 20-30% much too high for a darker room?
    The glass I have in mind as one of the best experienced is Pilkington MirroPane ChromeSpy.
    It has a transmittance of 8% and I hear that’s very good for rooms with natural lighting…

    My current view:
    Two values are important in terms of glass: Reflectance and transmittance.
    Highest possible reflectance is always best as I would assume. Values of >60% are good. The more the better
    Transmittance of < 10% is best for darker rooms
    Transmittance of > 5% is best for lit rooms.

    Please correct me if I’m wrong…


  • Project Sponsor Module Developer

    @lavolp3 I guess it depends on the glass itself. I’m using glass from Academy Glass (https://www.academyglassandmirror.ca/) with 20% transmittance and in a dark room picture is very clear. When the room is bright, sometimes it’s difficult to see the smart display stuff.



  • Thanks!
    In general it is a dark place where the mirror will be placed (in the anteroom), it has no window, but because of this, we turn on the light almost always when we are there. So I don’t know what will be better. But it depends on screen brightness also, right?
    I think in general when the lights on, it is considered as a normal room.



  • @radokristof yep also the location, bathroom get the glass when the bathroom steams up it won’t scratch as easy as the acrylic, I’ve gone for pilkington mirrorview 50/50


  • Module Developer

    @radokristof I have a mirror in quite a dark room installed, where usually we have lights on.
    I use a glass called mirastar in this
    Reflectance 58%.
    Transmission 3%.

    In this case the transmittance of 3% is well enough. All of the modules can be seen very well although I have to admit that I have played with the css styles making all the brightness levels a bit brighter. When lighting is on the monitor frame can only be seen when you look very closely.
    However, I’m not completely satisfied with the reflection of the glass. There is a brown tint to it and the mirror looks a bit too dark.

    Hopefully today I’ll pick up my new Chrome Spy then I have a comparison.

    @j-e-f-f I was hoping that at least these values are comparable since they are physical ones and should not be limited to a glass brand.


  • Project Sponsor Module Developer

    @lavolp3 said in Which type of mirror to use:

    @j-e-f-f I was hoping that at least these values are comparable since they are physical ones and should not be limited to a glass brand.

    Heh! Like most things in life it appears that standards are seldom very standard!


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