Avago Technologies Ecbu IP Pte. Ltd.

Sai Hong Hung

Weng Fei Wong

Siang Leong Foo

Chee Foo Lum

Gin Ghee Tan

Keen Hun Leong

Song Wah Ooi

Yik Foong Soo

An optical encoder includes an optical encoder pattern of alternating light elements and dark elements, and an optical unit, including an optical emitter providing light to the encoder pattern, and an optical sensor including a photo-detector receiving the light from the optical encoder pattern and in response thereto outputting a sinusoidal signal indicating relative movement between the optical sensor and the encoder pattern. In one embodiment, the photo-detector has a diamond shape, a modified-diamond shape, or an hourglass shape. In another embodiment, at least one of the light elements and the dark elements of the optical encoder pattern has a diamond shape, a modified-diamond shape, or an hourglass shape.

Optical encoder with sinusoidal photodetector output signal

Growing community of inventors

Penang, Malaysia

Sai Hong Hung