TAG LensTAG Lens Product Family:
             The world's Fastest Focusing Lenses

The award winning TAG Lens™ product family of ultra-fast varifocal lenses provides a combination of disruptive features transforming the way optical focusing is performed. Using sound to shape light, TAG Lenses break through traditional speed and reliability bottlenecks leading to best-in-class performance even in the most demanding optical systems.

TAG Lenses utilize dynamic density gradients to create an aspheric lens with low aberration and near diffraction-limited performance. This novel mechanism of action involves no moving parts and allows for unmatched operating speeds capable of reaching megahertz frequencies and providing simultaneous multiple location imaging. This same mechanism of action also enables novel depth-of-field control that can open the door to real-time 3D or high depth-of-field imaging in a compact assembly.

TAG Lenses can be effortlessly integrated into any machine vision, microscopy, or laser processing optical systems. Their properties benefit applications from conveyor belt systems to security imaging, from multi-photon to white-light microscopy, from laser cutting to laser marking systems. TAG Lenses increase throughput, reduce down time due to mechanical system failure, while leveraging existing capital equipment and providing true economic value proposition to the end user.

TAG Lens

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player

Why use a TAG Lens?

High resolution imaging, high throughput industrial/biomedical scanning, and laser processing share a common problem: current approaches are ill-suited for non-flat surfaces or 3-d volumes due to an inherent inability of traditional optical systems to rapidly change the focal position or to control the depth-of-field independently of the magnification

The TAG Lens solves this problem by providing a computer-controlled lens that works with existing optical assemblies to add z-direction tunability. Due to its sub-microsecond speeds, the TAG Lens is fast enough to scan 3-d volumes in real-time and provide a user defined depth-of-field and focus, for improving system throughput.

The TAG Lens products family have multiple application spanning materials processing, imaging (organic & non-organic), wave sensing, optical interconnection and information encoding, spectrophotometry, and more.

TAG Lens Advantages:

  • User controlled depth of field
  • Scan 3D volumes in real time
  • Sub-microsecond tuning speeds
  • Near diffraction limited resolution
  • No moving parts
  • Orientation independent
  • Simple integration

Sample Applications

  • Machine Vision
  • Industrial part imaging
  • Volumetric Inspection
  • Laser material processing
  • Biological microscopy
  • Particle counting

Case Study: Machine Vision Part Inspection

TAG Enabled Juice Bottle Inspection

TAG Lens 2.5 Development Kit with TAG Optics Imaging Kit were used to modify a standard optical inspection setup consisting of a color camera with a 25mm F1.4 imaging Lens. Without the TAG Lens, the depth of field of the system is too small to enable imaging the entire volume of the bottle. However, once the TAG Lens is turned on, it is then possible to focus on either the neck or the bottom of the bottle, or even use the TAG Lens to project the top and bottom image simultaneously unto the camera - alleviating the need for any refocusing or for recording more than one frame per object, increasing throughput speed and decreasing the amount of memory required.

Case Study: Microscopy Inspection

Simultaneous Multi Plane Imaging micro-inspection

The TAG Lens 2.5 was incorporated into a BX60 Olympus microscope to enable instantaneous inspection of a laser diode using a 10x 0.25 NA objective.

Laser diode is composed of three planes over 350 µm in height (240 µm between substrate and the P-N junction and 110 µm between the P-N junction and the top electrode). High magnification suffers from inherent lack in depth of field (DOF) and as such the system without the TAG Lens only has 9 µm DOF. Once the TAG Lens is turned ON it is then possible to simultaneously image all three planes of interest in one exposure of the camera.

Images were then analyzed using Image J's Sobel Edge Detector engine clearly showing the increase in information without loss in resolution.