2000

• Device Techno Center established in May
• Achieved monthly production of 4.6 million CD sensor
• Development of 500MHz silicon high-speed PIN-type photo diode
• Development of small-type optical encoder (180LPI)
• Development of 3D device
• Development of inverter resistant PICS
• Development of single-mold infrared receiver module (3V)
• Development of IrDA Ver. 1.0

2001

• Development of light-emitting IC for optical communication
• Development of IrDA Ver.1.2
• Development of small-type optical encoder (300LPI)
• Development of 600MHz silicon high-speed PIN-type photo diode
• Development of bistable light switch (for power supply voltage 1.5V)
• Development of device for SMD-type

2002

• Company name changed to “KODENSHI CORP.” in May
• 30th anniversary of KODENSHI founding
• Acquisition of ISO14001 certification in September

2003

• Acquisition of ISO9001 certification in March
• Shanghai office established in April
• Development of photo IC for digital audio interface
• Release of infrared LED for photoelectric sensor
• Release of SMD-type photo diode

2004

• Development of optical connector for digital audio interface
• Development of front monitor・photo IC for optical device
• Development of optical filter less type ambient light sensor
• Development of SMD small-type remote control module

2005

• KODENSHI SY CORP. acquired ISO14001 certification
• Shenzhen office opened in December
• Development of optical filter less type ambient light sensor IC
• Development of high-resolution encoder (600LPI)
• Release of long-distance paper sensor (22mm)
• Release of manuscript size sensor (platen distance 42mm)
• Release of large scale LED print head for industrial printer

2006

• Release of high-output infrared LED
• Release of sensor for print-start timing detection
• Development of multiplier LSI
• Development of high-temperature compatible paper sensor
• Development of manuscript size sensor (platen distance 50mm)
• Development of ultra-small double molding interrupter
• Development of blue chip LED

2007

• Bangkok office opened in April
• KODENSHI DH CORP. established in July
• Development of high-speed photo diode for laser(blue purple)
• Development of multiplier IC compatible analog encoder
• Development of infrared range finding sensor
• Development of connector-integrated paper sensor
• Development of spot LED for digital camera
• Release of bullet-shaped LED

2008

• Exhibited at Electronica2008
• Development of thin-type manuscript size sensor (platen distance 75mm)
• Release of pastel color LED

2009

• Made 「コーセイ電子株式会社」 a subsidiary by 100% invested
• Company name changed to “KODENSHI TK CORP.”