Coretronic Corporation

Shou-Chih Chen

Sea-Huang Lee

Hung-Chieh Huang

Chuan-Te Cheng

Sze-Ke Wang

Wen-Ching Ho

An electronic whiteboard includes a projection unit, an adjusting mechanism, and a projection screen. The adjusting mechanism includes a fixing base, a rotary plate, and a first screw. The fixing base is adapted to be fixed to a fixing object. The rotary plate is pivotally connected to the fixing base, and is ball jointed to the projection unit. The first screw is locked on the rotary plate, and is ball jointed to the projection unit. The first screw drives the projection unit to rotate relatively to the rotary plate along a first axis when the first screw is rotated. The projection screen is adapted to be fixed to the fixing object. The projection unit is capable of projecting an image beam onto the projection screen.

Adjusting mechanism, projector, electronic whiteboard, and adjusting methods of projector and electronic whiteboard

The present invention provides a correcting apparatus for correcting images projected from a projection system. The correcting apparatus includes a correcting module and a projection lens. The correcting module shields a light signal for producing a corrected light signal. The projection lens receives the corrected light signal for producing an image light signal. The correcting module is disposed on a first outer circumference at one end of the projection lens.

Correcting apparatus for projection system

An elevating module for a projection apparatus is provided. The elevating module includes a base, a movable leg, a first elastomer, a decelerating module and a fixing component. The base is connected to the projection apparatus and has a slide way, an accommodating space and an opening. The accommodating space is disposed in the base and connected to the opening disposed at one end of the base. The slide way is disposed on one sidewall of the base and connected to the accommodating space. The movable leg penetrates the opening of the base and accommodates within the accommodating space. The first elastomer is connected to the base and the movable leg that can protrude from the opening of the base through the first elastomer. The deceleration module is disposed on the base and connected the movable leg. The fixing component is fixing the base to the movable leg.

Elevating module

A projection optical system includes a light source, a digital micromirror device (DMD), a projection lens and a first block sheet. The light source provides an illumination light. The DMD includes a plurality of micromirrors, and the angles of each micromirrors are changed individually according to an input signal for separating the illumination light reflected from the micromirrors into a signal light, a first stray light and a second stray light. The signal light passes through the projection lens and is further projected onto a screen. The first block sheet is disposed closely to the projection lens to allow the first stray light and the second stray light to be fully shielded off by the first block sheet and thus not to reach the projection lens.

Projection optical system

An adjusting structure of projector includes a base, a slider, a foot member and a controller. The slider is disposed on the base and has an opening. The foot member is installed through the opening of the slider. One end corresponding to the foot member and the slider is respectively disposed a plurality of groove and a blocker. The top of the controller has an inclined part that presses against an inclined plane on one side of the slider. When a user presses the controller, the inclined part pushes the inclined plane of the slider, making the slider slide along one axis to make the blocker separated from the grooves in a parallel direction. A pressing member moves the projector upward or downward along the foot member to a predetermined location, and then the pressing member is released and returns by the elastic member.

Adjusting structure of projector

An adjusting apparatus for a projection lamp has a base, an adjusting module, and a pair of adjusting device and repositioning device, which are on the opposite surfaces of the base. The adjusting module has a plurality of adjusting plates that are combined by the guide-grooves and guide-pins. A projection lamp is fixed to an end of the adjusting module. As using the adjusting device and the repositioning device for adjusting the position of the projection lamp, the projection lamp can be achieved the two-dimensional adjustment and the projection system can reduce the illumination loss.

Growing community of inventors

Chu-Nan, Taiwan

Shou-Chih Chen