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