Our Solutions
1- Front Facing (selfie) Camera Solutions
Sheba MEMS technology is perfect for AF in compact and ultra low profile selfie cameras.
(A) SHEBA AF SELFIE  USING LENS BARREL MOTION 

This camera incorporates a single Sheba µPistons actuator that translates the lens barrel along the optical axis to achieve autofocus.The positioning of the actuator around the optics, leads to zero z-axis thickness added to the Total Track Length (TTL) while maintaining a very low camera profile.

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(B) SHEBA AF SELFIE USING IMAGE SENSOR MOTION

This selfie camera achieves AF by moving the image sensor along the optical axis (z) using a single Sheba µPistons actuator. It has an ultra slim profile while achieving instant AF. It enables the selection of larger optics that have shallow depth of  field such that the user face is in focus while the background is blurred.

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Rear Camera Solutions (AF and OIS)
(C) Sheba AF+OIS using the tilt of the lens and sensor

Sheba Microsystems has also developed a complete MEMS solution to achieve optical image stabilization (OIS) and Autofocus (AF) for smartphone cameras that was possible with the Sheba µPistons™ technology.

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Reliability (Drop Test)
Sheba MEMS AF cameras using image sensor motion have successfully passed the drop test from 1.5 m height on a steel ground while mounted in a 167 g phone jig

(A) SHEBA AF SELFIE USING LENS MOTION

Key advantages

 

  • Compact size (zero thickness is added to the TTL)
  • Low profile
  • Fast response
  • Natural bokeh effect
  • Low power
  • High repeatability (< 1um)
  • An image with natural bokeh effect taken by a single lens Sheba AF selfie MEMS camera using lens barrel motion. No image enhancement or AI algorithm were used. The focus of the image is on the user face.
  • An image with natural bokeh effect taken by a single lens Sheba AF selfie MEMS camera using lens barrel motion. No image enhancement or AI algorithm were used. The focus of the image is on the background.
Demo of Sheba AF selfie camera using lens motion

Search based algorithm is used (10 steps), no pdaf.

(B) SHEBA AF SELFIE USING IMAGE SENSOR MOTION

Key advantages

 

  • Compact size
  • Ultra Low profile
  • Compatible with larger optics (as optics don’t move)
  • Faster response
  • Natural bokeh effect
  • Low power
  • High repeatability (< 1um)
  • An image with natural bokeh effect taken by a single lens Sheba AF selfie MEMS camera using image sensor motion. No image enhancement or AI algorithm were used. The focus of the image is on the user face.
  • An image with natural bokeh effect taken by a single lens Sheba AF selfie MEMS camera using image sensor motion. No image enhancement or AI algorithm were used. The focus of the image is on the background.
Demo of Sheba AF selfie camera using Image sensor motion

Search based algorithm is used (10 steps), no pdaf.

(C) SHEBA AF+OIS USING THE TILT OF THE LENS AND SENSOR

This camera offers a complete MEMS solution to achieve optical image stabilization (OIS) and Autofocus (AF). It utilizes a unique approach to achieving AF and OIS using a simultaneous lens-sensor-tilt; where the camera system consists of 2 actuators (one around the lens barrel and a second placed behind the image sensor). Each actuator has 3-DOF motion: pitch, yaw, and z-axis translation; both actuators move relative to each other to achieve AF and tilt simultaneously to achieve OIS.

Lens barrel in motion using Sheba 3-DOF motion piston tube actuator

Image sensor in motion using Sheba 3-DOF motion piston tube actuator

ACTUATOR PERFORMANCE
  1. Large Translation Strokes (150 microns for each actuator, 300 microns for the total stroke)
  2. Two-Axis Tilt/Rotation
  3. Tilt Angle (±0.8 – yaw and pitch)
  4. Large Force (130+ mg payload)
  5. High Speed: 200-500 Hz resonance depending on load
  6. Low Power:  <2 mW
  7. Ultra-thin:  0.5 to 0.6 mm
  8. Precise Positioning (sub-micron accuracy)
  9. Compatible with Large Lens Barrels: 7 elements, F#1.7
  10. Compatible with Large Image Sensor format (1/2.55) e.g. IMX362
KEY ADVANTAGES
  • low light photography
  • Super resolution zooming
  • 3D depth mapping
  • Sharp images
  • Low power
Demo of Sheba AF+OIS camera using lens-sensor tilt