• Alignment of a lens surface to an optical axis of a lens
• Alignment of a lens with respect to the axis of an arbor

OptiCentric® Cementing is a perfect supplement for optical edging machines. As a preliminary step of the edging process, the OptiCentric® Cementing device aligns and cements lenses. If the lenses are aligned and cemented to each other the lenses are fixed with the bell clamping method in the edging machine. If the lenses are cemented on an arbor, the arbor is fixed in the edging machine and the edge of the lenses is machined.

Key Features

• Aligning accuracy with SmartAlign better than 2 µm
• Very short cycle, 10 s with MultiCentric® measurement head
• Automated alignment of the centers of curvature of the top lens surface to a customer-specific axis with SmartAlign Technology
• alignment to the optical axis of the lower lens
• alignment to the axis of an arbor
• Automated process: measurement, alignment and UV curing completely software controlled
• Adapted to the production processes of lens manufacturers
• Short set up time for other lens geometries
• Based on well-established OptiCentric® measurement systems
• High-precision measurement of centration error in reflection mode (0.1µm accuracy)

• Applications

  • Automated lens alignment and cementing: doublets and triplets
  • Automated lens alignment and cementing to centration arbor or rod lens
  • Lenses are aligned and cemented to the optical axis and can be fixed with bell clamping method on the centration machine
  • High-precise measurement of centration error of doublets and triplets
  • Homogenous UV curing with constant rotation during illumination 
  • Manual lens alignment and cementing relative to circumference of lens possible on the lens rotation device 

  Alignment Units for the OptiCentric® Cementing

  The OptiCentric® Cementing Workstation aligns and cements lens pairs quickly and accurately with an accuracy of better 2 µm. During the alignment process the upper lens is either aligned to the optical axis of the lower lens or to a mechanical axis, e.g. the axis of an arbor. To provide cementing solutions for all lens geometries and manufacturing processes TRIOPTICS offers different alignment units which can be placed on the OptiCentric® Cementing or MultiCentric® Cementing Workstation.

  Alignment Unit Standard

  The Alignment Unit Standard aligns and cements lenses with a sample geometry of D/(2R) ≤ 0.7¹. The unit can be easily adapted to different lens sizes and is therefore more flexible when different doublets need to be aligned within short notice.

   

  Technical Data of the Alignment Unit Standard

  	Coaxial alignment (3 surfaces)	Alignment on arbor (1 surface)
  Sample geometry ¹	D/(2R) ≤ 0.7	D/(2R) ≤ 0.7
  Alignment accuracy	Better 2 µm	Better 2 µm
  Lens diameters ²	4 - 90 mm	4 - 90 mm
  Time for change-over to other sample type (predefined set up)	10 s	10 s
  Cycle Time	1 min	10 s
  Cycle time with MultiCentric® measurement head	10 s	on request

  
  

  ¹ D = lens diameter, R = radius of curvature of the intermediate lens surface of the doublet

  ² other diameters on request

  Alignment Unit Advanced

  The Alignment Unit Advanced was developed to overcome the limitations of the Alignment Unit Standard. All kinds of lenses can be aligned with this unit, including:

  • hemispherical lenses
  • lenses with D/(2R) > 0.7
  • doublets where the edge of the upper lens in not accessible
  • lenses with tight tolerances for cement wedge

   

  

  Technical Data of the Alignment Unit Advanced (AUA)

  	Coaxial alignment
  Sample geometry	All geometries
  Alignment accuracy	Better 1 µm
  Lens diameters ²	5 – 100 mm
  Time for change-over to other sample type (predefined set up)	5 min
  Cycle Time	1 min
  Cycle time with MultiCentric® measurement head	10 s

  
  

  ² other diameters on request

  Lens alignment and cementing on arbor on request