Inventor

CHANG PING-JU

TW3 patents

⚠️ This page may combine multiple inventors who share the name “CHANG PING-JU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TOPRAY MEMS INC

2 patents

US9195026B1Nov 24, 2015

Step response suppression structure of lens driving apparatus

TOPRAY MEMS INC11 citations80

US9341811B2May 17, 2016

Method and apparatus for adjusting-free automatic focus

TOPRAY MEMS INC0 citations45

CHANG TSUNG-KAI

1 patent

US8291442B2Oct 16, 2012

Electromagnetic actuator of optical pickup head

CHANG TSUNG-KAI0 citations28