4K Monochrome USB 3.1 Gen 1 Camera
Infrared-USB-camera

Near Infrared USB camera

Published on August 28, 2014

We recently launched Near Infrared (NIR) version of our flagship product e-CAM51_USB, with the growing enquiries from our customers looking for a NIR version of the same. The e-CAM51_USB_NIR has the e-CAM52_5640_MOD_NIR camera module which has the NIR filter removed.

So what is special about these NIR cameras? Well let’s look into what is Near infrared. NIR (a sub-division of Infrared) is the region closest in wavelength to the radiation detectable by the human eye. However these NIR radiations cannot be sensed by the human eye or any other cameras as well. Now, the cameras with NIR filter removed can sense the objects at Zero visible light and capture images with infrared light radiations of wavelengths roughly ranging from 850 nm to 1400 nm.

Find below the sample pictures taken using our e-CAM51_USB_NIR camera with Infrared light wavelength ranging at 850nm and e-CAM51_USB with natural light source. Obviously with e-CAM51_USB we were able to capture only darkness without light.

Nir camera lux meter   NIR-Camera-Luxreading-light
Image captured at Zero Lux
(Light meter reads zero)
  Image captured at Normal light
     
 
Random objects captured with
e-CAM51_USB_NIR camera
  Random objects captured with
e-CAM51_USB
     

These cameras come into place where the applications run in poor lighting conditions. Such applications include but not limited to Night vision, Surveillance, Industrial image processing applications, spectroscopy, Medical devices, food inspection etc. Also these cameras can be extremely useful in capturing objects such as Veins or wounds, that are not visible to human eye.

 
Veins visible while Imaging the vasculature of the patient’s hand   No vein visible, Imaging in normal light
     

Based on these 7 key parameters, we have compared e-CAM51_USBNIRFS with See3CAM_12CUNIR.

 

Parameter

 

e-CAM51_USBNIRFS

   

See3CAM_12CUNIR

 
 

Sensor and type

 

OV5640 from OmniVision, 1/4 inch CMOS Color sensor.

   

AR0130CS from Aptina, 1/3 inch CMOS Monochrome sensor

 
 

Spectral efficiency of sensor in NIR

 

Not well optimized for NIR range.

   

Optimized for good sensitivity in NIR range with about 30% quantum efficiency in 850nm range.

 
 

Sensor resolution

 

5MP (2592×1944 pixel) color. The supported format is YUV422 (equivalent to 8bits per pixel).

   

1.3MP (1280×960 pixels) monochrome. The supported format is 12bits per pixel.

 
 

USB Interface

 

USB2.0 UVC. No USB3.0.

   

USB3.0 UVC, backward compatible with USB2.0

 
 

Lens Type

 

Similar to Autofocus cell phone camera with lens assembly. No interchangeable lens option. VCM Autofocus lens in mobile phone cameras. The NIR blocking filter of this camera is removed while assembling this camera.

   

Interchangeable lens option with M12 (S-mount) lens holder. Allows to use different lenses and filters.

 
 

Flexibility

 

Not much flexibility with respect to lenses or filters

   

Highly flexible to use any M12 lens and to use any lens filter.

 
 

Lens and filter options

 

Not possible to change the lens or lens filter. The e-CAM51_USBNIRFS camera has no IR cut-off filter and allows both the visible spectrum and IR spectrum.

   

Interchangeable M12 lens mount allows any kind of lens for meeting application requirements. There are variety of M12 lenses available off-the-shelf. There also lot of filters that can be used with: for example, visible-block & IR-pass, IR Band-pass, IR Narrow band filters etc.

 
 

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