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Spectrum camera

The Spectrum triple sig­nal Cam­era is able to show the live color image of the sit­u­a­tion the sur­geon is actu­ally look­ing at. The nat­ural image is over­laid with one of the two flu­o­res­cent images.

The prism tech­nol­ogy makes it pos­si­ble to look through one lens and via iden­ti­cal light paths see the object on three sen­sors.
This tech­nol­ogy, core to the Quest prod­ucts makes it possible:

  • To com­bine the infor­ma­tion from the three sen­sors in one image
  • To com­bine with­out switch­ing between vis­i­ble and flu­o­res­cent images
  • To over­lay the sep­a­rate images per­fectly (max 14th of a pixel off)
  • To move the cam­era with­out motion aberrations

The high qual­ity images not only give the sur­geon infor­ma­tion that is unde­tectable with the human eye. By over­lay­ing the flu­o­res­cent and nat­ural images, he also knows exactly where the 'invis­i­ble' infor­ma­tion is located on the oper­a­tion table.


Depth of pen­e­tra­tion in tis­sue depends on:

  • The den­sity of the tissue
  • The bright­ness of the flu­o­rophore used
  • The amount of exci­ta­tion light deliv­ered by the light engine
  • The dis­tance between cam­era and tis­sue illuminated
  • The wave­length of the flu­o­rophore (e.g. 800nm is bet­ter than 700nm)
  • The expo­sure time of the camera's exci­ta­tion sen­sor (the sen­sor which detects the flu­o­res­cent light emit­ted by the fluorophore).

The depth of pen­e­tra­tion when ICG is used for visu­al­iza­tion is around one cm, but that dis­tance is depen­dent on fac­tors such as used probe, tis­sue type, light power and the dis­tance between light source and tissue.



The speed of the cam­era allows for a flow­ing pic­ture stream; video mode. The frame rate is depen­dent on the expo­sure time, longer expo­re times will result in lower frame rates but a higher sen­si­tiv­ity. The image res­o­lu­tion is High Defenition (HD).


The “NIR-Safe" feed­back mech­a­nism pro­tects sur­geon and patient from unin­tended over-exposure with invis­i­ble NIR light. Based on our pro­pri­etary white light feed­back mech­a­nism, the com­bined Spectrum Cam­era /Media Cen­ter /Light Engine mea­sures and adjusts the required NIR light irra­di­ance. A safe exci­ta­tion light inten­sity is obtained at all work­ing dis­tances (work­ing dis­tances may vary between 1.5 cm and more than 25 cm).


The cam­era in com­bi­na­tion with the light engine defines the appli­ca­tion of the sys­tem. Many cus­tomized con­fig­u­ra­tions have already been real­ized. When your flu­ophore is not amongst the con­fig­u­ra­tions under­neath, please con­tact us.

Cur­rent ver­sions avail­able for:

  • ICG (Indo Cyanide Green)
  • Meth­yl­ene Blue
  • Flu­o­res­cein
  • Cy5.5
  • Cy7
  • CW800
  • ZW800


Optics and draping
Light Engine
Capture Suite software