MEMS Laser Scanning: Connect Mirror Motion to Barcode Reads — working record
Yenra | October 3, 2026
https://yenra.com/mems/laser.html

Purpose: Explain MEMS beam steering and define a barcode-scanning comparison using representative targets, distances, motion and read outcomes.

Instructions: Make a working copy. Fill the fields below with actual evidence and units. Record unavailable information as unknown, give it an owner, and resolve it before using the record for acceptance. Keep raw evidence by reference. Use the approved method, equipment limits and acceptance rules for your application. This blank record does not establish qualification.

1. Application; scanner model/firmware; supported symbologies
   Response / evidence reference: ______________________________

2. Scan-rate and angle definitions; manufacturer operating envelope
   Response / evidence reference: ______________________________

3. Target IDs and expected data; symbol size/print/surface condition
   Response / evidence reference: ______________________________

4. Distance/angle/orientation; motion speed; reading window and trigger
   Response / evidence reference: ______________________________

5. Lighting and other operating conditions
   Response / evidence reference: ______________________________

6. Presentation log: expected / decoded / on-time / late / no-read / wrong-read
   Response / evidence reference: ______________________________

7. First-presentation and retry denominators; repeated target identity
   Response / evidence reference: ______________________________

8. Host interruption/duplicate/acknowledgement checks
   Response / evidence reference: ______________________________

9. Fictional checks: 500 x 0.08 = 40 sweeps; 980/1000 = 98% on-time
   Response / evidence reference: ______________________________

10. Approved configuration; limits; unresolved findings; reviewer
   Response / evidence reference: ______________________________

Teaching example (fictional; not acceptance criteria):
Fictional scan-window calculation A target remains in the usable region for 0.08 seconds. A stated rate of 500 scans per second suggests 500 × 0.08 = 40 nominal sweeps during that window, if the rate applies continuously to the defined scan pattern. It does not imply 40 complete or independent decoding attempts. Orientation, trigger timing, trajectory and signal quality determine which sweeps are useful. Measure correct reads within the window directly.

Primary source context (consult for applicable method and scope):
Hamamatsu's MEMS mirror technical note
https://www.hamamatsu.com/content/dam/hamamatsu-photonics/sites/documents/99_SALES_LIBRARY/ssd/mems_mirror_koth9003e.pdf
MicroVision's 2007 scanner announcement
https://ir.microvision.com/news/press-releases/detail/261/microvision-unveils-new-mems-based-laser-bar-code-scanner

Review outcome: accepted / held / further evidence needed
Reviewer and date: __________________
Open actions, owner and due date: __________________