Hansaem Kim

Joined an early-stage PoC project with a major North American tech client(Company A) as a core engineer. Took ownership of all camera module PCB designs and implemented signal shielding solutions to eliminate interference between actuator control and image sensor signals. Introduced and verified a novel sub- micron level position sensor, achieving highly accurate actuator control. Leveraging past experience in OIS, now lead OIS control development, while also managing customer-facing technical discussions including spec alignment, metrology equipment development, and client lab tours.

• Selected image sensors based on comparative evaluation.
• Designed complete PCB layout for camera module, including signal shielding, resulting in 70% noise reduction.
• Developed a control algorithm using a new high-precision position sensor to achieve sub-micron resolution.
• Led actuator spec negotiations and performance test equipment development.
• Performed camera module FACA (for OIS and SFR) and supported process optimization for PoC Sample build.
• Hosted client meetings and lab tours for English speaking customers.

Worked simultaneously on two projects.

In the first, supported mass production of the second-gen continuous zoom model, re-engineering the OIS suppression ratio test process due to removal of the gyro sensor. Developed an alternative test method in collaboration with the client, successfully validating its GRR for production use. Also contributed to firmware updates to address ball-type actuator issues caused by friction.

In the second, joined a fixed-zoom camera project for Google mid-way to solve OIS-related issues. Enhanced OIS noise performance and suppression ratio, and developed a new calibration method to correct optical axis shift during zoom scope variation-directly meeting client performance expectations.

• Led PCB design and developed custom production test processes.
• Optimized and validated OIS/AF firmware.
• Conducted full FACA for OIS and AF actuators.
• Developed new optical axis calibration algorithm for dynamic zoom scenarios.

Contributed to the second-generation continuous zoom mass production project from early development. Took part in image sensor selection through close coordination with the client and led PCB design for OIS and Zoom/AF modules. Applied lessons learned from the first-generation zoom to enhance firmware in collaboration with D-IC partners. Successfully improved OIS noise performance to enhance SFR and participated in re-designing actuator to mitigate AF-OIS crosstalk.

• Designed sensor, OIS, and AF PCBs.
• Verified and improved OIS firmware while performing detailed failure analysis.
• Led FACA for AF and zoom actuators to ensure stable performance.

Took part in the worldʼs first mass production of a continuous zoom camera module for Japan client(Company S). Involved in early-stage development including sensor, OIS, and AF PCB design and control. Worked closely with D-IC vendors to develop calibration algorithms for ball-type actuators and continuous zoom control. Played a key role in aligning product specs and test methods with the customer, and later transitioned into leading the OIS function during production, performing in-depth failure analysis to improve product yield and ensure production readiness.

• Designed module and process PCBs for sensor, OIS, and AF.
• Led discussions with customers to finalize specs and validation methods.
• Co-developed actuator performance tester with vision inspection.
• Conducted OIS process failure analysis (FACA) and participated in customer meetings.
• Collaborated with D-IC vendors on calibration algorithm design and improved prism OIS suppression ratio via PID tuning, resulting in 10% gain in SR.

Joined in advanced development project for front camera utilizing liquid lens technology. Actively participated in sensor PCB design while primarily focusing on reducing image sensor noise caused by PWM-based liquid lens driving. Designed and implemented high-voltage output circuits from low-voltage mobile input, addressed sensor noise via shielding techniques, and developed compensation algorithms to stabilize lens performance against temperature variation.

• Designed high-voltage (70V+) output circuit using low-voltage mobile input for liquid lens actuation.
• Developed shielding PCB design to suppress PWM-induced sensor noise.
• Created compensation algorithms to adjust for temperature-based changes in lens behavior.