![]() In 2003, I was living in the UK and, after doing some research, I figured out that I had had life-long “delayed sleep phase” issues. I have a few comments, and two questions for you.įirst, though, I will describe my past experience in using sunrise simulation lamps:Ī. Department of Biopsychology, New York State Psychiatric Institute.Department of Epidemiology and Public Health, University College London.Department of Psychology, University of Westminster.Psychiatric Hospital of the University of Basel.There are numerous studies proving this but here are just a few: ![]() Research has proved that wake up lights have a beneficial effect on sleep, waking, mood and energy. The majority of users says the changing light spectrum wakes them up gently and effectively – a seamless transition from sleep into wake so you feel like getting up. It might take a few goes to get the Philips HF3520 set up to your exact requirements, but yes it does work. How Does It Compare To Other Philips Models? The light will gradually illuminate until it reaches its maximum intensity at your preset time before the sounds turn on and increase in volume. You can also set the HF3520 so you wake up to one of five natural sounds. Please note that the time display cannot be turned off completely though. It also has a sensor adjust to the ambient light, so it will dim more when all the lights are off in the room. I’ve had bedside clocks before where the light from the display could almost be a torch, this Philips Wake-Up Light is not like that at all. ![]() The clock face has four options of brightness that you can adjust and is also a mellow orange colour that is not intrusive at all. The digital clock panel display is quite nifty too. The Philips HF3520 also doubles up as a reading lamp with 20 adjustable brightness levels that you can set independently of the wake up brightness. If you are someone who likes to read in bed for instance, you can set the light to dim gradually (from a maximum length of one hour to a minimum of five minutes) as you slowly drop off. ![]()
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