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Lot of 2 Black SunBox DL Therapy Desk Lamp 10000 Lux Full Spectrum Light
$107.10
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PureGuardian 10000 LUX Full Spectrum Energy Light with Customizable Blue or
$97.77
quality
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PureGuardian 10000 LUX Full Spectrum Energy Light with Customizable Blue or W
$91.77
quality
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Circadian Optics Lumos Light Therapy Lamp 10000 LUX Full Spectrum LED USB
$300.00
quality
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Circadian Optics Lumos 20 Light Therapy Lamp Ultra Bright 10000 Lux Full
$66.99
quality
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New 10000 LUX SunBox SunLight Jr Travel Lamp Full spectrum SAD light therapy
$179.00
quality
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PureGuardian 10000 LUX Full Spectrum Energy Light with Customizable Blue or
$95.31
quality
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White SunBox DL Desk Lamp 10000 Lux Full Spectrum Light Made in USA
$44.99
quality
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LED Therapy Lamp Lumos 20 Light Ultra Bright 10000 Lux Full Spectrum White New
$68.38
quality
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PureGuardian 10000 LUX Full Spectrum Energy Light with Customizable Blue or
$88.98
quality
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Circadian Optics Lumos 20 Light Therapy Lamp Ultra Bright 10000 Lux Full Spe
$68.08
quality
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LED Therapy Lamp Lumos 20 Light Ultra Bright 10000 Lux Full Spectrum White New
$68.04
quality
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Circadian Optics Lumos 20 Light Therapy Lamp Ultra Bright 10000 Lux Full LE
$66.98
quality
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Circadian Optics Lumos 20 Light Therapy Lamp Ultra Bright 10000 Lux Full LED
$88.98
quality
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PureGuardian Light Therapy 10000 LUX Full Spectrum Energy Light With Blue Or
$100.48
quality
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Circadian Optics Lumos 20 Light Therapy Lamp Ultra Bright 10000 Lux Full
$67.27
quality
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Circadian Optics Lumos 20 Light Therapy Lamp Ultra Bright 10000 Lux Full LED
$68.26
quality
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PureGuardian 10000 LUX Full Spectrum Energy Light with Customizable Blue or
$90.48
quality
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PureGuardian 10000 LUX Full Spectrum Energy Light with Customizable Blue or W
$107.43
quality
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PureGuardian 10000 LUX Full Spectrum Energy Light with Customizable Blue or
$108.98
quality
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Philips EnergyLight HF3318 60 Light Therapy 10000 LUX Full Spectrum Light
$100.00
quality
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LED Therapy Lamp Lumos 20 Light Ultra Bright 10000 Lux Full Spectrum White New
$72.04
quality

Lux Full

Lux Full

Day/Night Security Cameras – The Best of Both Worlds

A Quick Background

 

Color and black and white CCTV security cameras both have their unique strengths for your video camera surveillance needs. Color security cameras have the obvious benefit of providing the detail of…color. Being able to record the color of a suspect’s skin tone, clothing, or vehicle is beyond important – it can truly make the difference between solving the crime and the bad guy going free. In order for color security cameras to accurately produce colors, during manufacturing an IR cut filter is placed over the imager. The cut filter allows the camera to only see light in the visible spectrum (400nm to 750nm). Consequently, color surveillance cameras fall short when it comes to producing usable images in low light scenarios.

 

Conversely, black and white video camera surveillance setups don’t use an IR cut filter because they do not need to see color. With the absence of this filter, B&W CCTV camera options can make use of other light frequencies – such as infrared – which come from a variety of sources, including the sun, fluorescent lights, incandescent lights and of course… infrared illuminators. As a result, B&W surveillance cameras perform significantly better in low light and some can see at light levels as low as 0.0001 lux (almost complete darkness). An additional benefit of B&W video surveillance cameras seeing in the infrared range is the ability to illuminate an area with IR, providing the camera with ample lighting while leaving the area naturally dark which can aide in the capture of suspects.

 

The Benefits of Day/Night Cameras

 

Day/Night security cameras offer the unique advantages of both color and black and white CCTV camera setups. D/N video security cameras work just like color cameras during the day and switch to a B&W mode at night, using a removable IR cut filter. As daylight fades, day/night cameras sense the lower light levels and mechanically remove the IR cut filter, instantly switching to a more sensitive black and white mode.

 

Day/night surveillance cameras are available in all shapes and sizes to meet virtually every application need. D/N technology is available in many form factors such as dome cameras, fixed cameras, bullet cameras and even in tiny board cameras – which are especially useful for undercover operations which typically happen in a wide variety of lighting conditions. Many day/night CCTV cameras also offer built in infrared illumination, making a very nice turn-key camera package.

 

The traditional and most effective D/N security cameras are often referred to as true day/night cameras, and use a removable mechanical cut filter, as described above. However, digital day/night cameras (or electronic day/night cameras) are also available, which electronically adjust colors during the day, instead of using an infrared filter. This allows the digital day/night cameras to deliver similar benefits of true day/night cameras, but at a lower cost. Without the need for a physical filter, digital day/night technology can also be leveraged for smaller form factors, such as bullet cameras.

 

Regardless of the type of day/night camera you choose, I recommend considering the following areas to ensure you get the very best solution for your application:

 

  1. Lux ratings – Unlike traditional cameras, day/night cameras typically have two lux ratings – one for the camera’s color mode, and one for its black and white mode. Understanding both will allow you to draw a true comparison between day/night and more familiar traditional CCTV cameras.
  2. Lenses – If you are buying a fixed security day/night camera that requires a C- or CS-mount lens, be sure to get a CCTV camera lens that is rated for use with infrared light. IR ready camera lenses allow for the proper passage of IR light, the full use of the camera’s day/night capabilities, and of course, lower light performance.
  3. S/N Ratio – There are many surveillance cameras in the market place with low lux ratings, but this does not always mean they will produce a good picture in low light. To ensure you get both, select a security camera with a signal-to-noise ratio of 48dB or higher.

 

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