Automatic Focusing of a Motorized Photo Slit Lamp Microscope

Gierl, Christian; Voos, Holger; Kongprawechon, Waree; Kondo, Toshiaki; Phoojaruenchanachai, S.

doi:10.1109/iembs.2007.4352978

Cited by 2 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the microgrippers are in focus, the contrast in the image will be the highest as compared to a blurred image. At that position, the normalized focus value, which is the standard deviation over the mean, will reach the maximum value [26,27]. The initial orientation of the parallel microgrippers, as shown in figure 9(b), may not align with the camera frame.…”

Section: Bonding Process Of the Parallel Microgrippermentioning

confidence: 99%

Parallel microassembly with a robotic manipulation system

Chu

Mills

Cleghorn

2010

J. Micromech. Microeng.

View full text Add to dashboard Cite

This paper proposes a methodology to assemble multiple micro-components simultaneously with a robotic manipulator using a parallel assembly method. Through manipulating and assembling the micro-components, intricate, out-of-plane, three-dimensional micro-devices can now be fabricated. Use of a parallel microassembly process rather that a serial approach can significantly increase the productivity and reduce the cost of assembling micro-devices. The parallel microassembly operation proposed in this work was developed and implemented on a 6-DOF robot manipulator to attain considerable manufacturing flexibility. In this study, three passive microgrippers were bonded in parallel to the end-effector of the manipulator. Three microparts were then grasped by the grippers from the worktable of the manipulator, rotated 90 • , and assembled onto the base substrate simultaneously. During the parallel microassembly operation, the visual image may not be able to monitor all three gripper-part pairs simultaneously due to the limited field of view of the microscope. Through the use of an alignment-calibration algorithm with only one gripper-part set, the remaining two sets were successfully manipulated and inserted onto the desired assembly location.

show abstract

Section: Bonding Process Of the Parallel Microgrippermentioning

confidence: 99%