Benq Corporation

Prodisc Technology Inc.

Nai-Yueh Liang

Ta-Kun Kung

Chih-Neng Chang

Ke-Shu Chin

An-Hwa Yu

Yu-Yang Lu

Yen-Chun Chou

Wei-Chung Wang

Chong-Han Tsai

Shu-Ching Chan

A light tunnel with a gradient filter layer includes a light tunnel body and a gradient filter layer. In this case, the gradient filter layer is disposed at a light emerging side. The transmission rate at the central area of the gradient filter layer is smaller than the transmission rate at the edge area of the gradient filter layer.

Light tunnel with gradient filter layer

A projection system includes a light source, an image unit, a projection unit, a light-reflection unit and a screen. The light source emits a light beam. The image unit receives the light beam from the light source and forms an image light. The projection unit is disposed on the route of the image light. The projection unit receives the image light from the image unit and projects it out. The light-reflection unit disposed on the route of the image light has a reflecting layer and at least one light-pervious reflecting layer, and receives the image light from the projection unit. The light-pervious reflecting layer reflects the received image light to form a first image light. The reflecting layer reflects the received image light to form a second image light. The screen is disposed on the route of the first image light and the second image light. The first image light is projected on the screen to form a first image. The second image light is projected on the screen to form a second image. There is a displacement between the first and the second images.

Projection system

This invention discloses a method of producing a light source compensating element for adjusting the brightness distribution of light projected from a light source of a scanner onto a scanned object. The light source compensating element produced in accordance with this invention can be arranged between the scanner light source and the scanned object, thereby obtaining an even (or uniform) brightness distribution on the scanned object. In addition, compensating element with specific transmittance distribution can also be produced and placed between the light source of the scanner and the scanned object, whereby the light emitted from the light source through the compensating element has a specific brightness distribution on the scanned object.

Method of producing a light source compensating element

Method of producing light source compensating element and scanning apparatus applying the light source compensating element

A method of measuring sensor chip shift comprises the following steps. First, provide a contact image sensor module comprising a plurality of sensor chips arranged in a row on a main board, with each sensor chip having multiple sensors. Next, provide a test chart with a predetermined pattern. Further, enable the multiple sensors of the contact image sensor module to scan the predetermined pattern of the test chart. Moreover, select signal waves sensed by the sensors at the ends of two adjacent sensor chips. Finally, calculate the gap between the sensors at the ends of the two adjacent sensor chips according to the signal waves.

System and method of measuring image sensor chip shift

Growing community of inventors

Taipei, Taiwan

Nai-Yueh Liang