A projection system and calibration method therefor relate to a light source configured to emit a light in response to an image data, an illumination optical system configured to steer the light, the illumination optical system including a first minor and a second minor, a digital micromirror device (DMD) including a plurality of micromirrors respectively configured to reflect the steered light to a filter as on-state light or to reflect the steered light as off-state light to a light dump; determining a deviation between an actual angle of orientation and an expected angle of orientation of the DMD; calculating a first amount of angle adjustment corresponding to the first minor and a second amount of angle adjustment corresponding to the second mirror; and actuating the first mirror according to the first amount and the second mirror according to the second amount.

A display control method includes displaying, by a projection device, a first user interface related to an adjustment of a projection image, displaying, by a control device communicating with the projection device, a second user interface including a display object corresponding to the projection image, transmitting, by the projection device, first adjustment information based on a first operation to the first user interface to the control device when the projection device accepts the first operation, adjusting, by the projection device, the projection image based on the first adjustment information, updating, by the control device, the display object based on the first adjustment information, transmitting, by the control device, second adjustment information based on a second operation to the second user interface to the projection device when the control device accepts the second operation, adjusting, by the projection device, the projection image based on the second adjustment information, and updating, by the projection device, the first user interface based on the second adjustment information.

A lens module includes a first base, a lens assembly assembled on the first base, a second base stacked on the first base, a first adjustment member, and a second adjustment member. The first base has at least one first rib structure extending along a second axis, and at least one second rib structure extending along a first axis. The first adjustment member is movably engaged with the first rib structure along the first axis. The second adjustment member is movably engaged with the second rib structure along the second axis. When the first base moves along the first axis, the second adjustment member avoids the second rib structure. When the first base moves along the second axis, the first adjustment member avoids the first rib structure. A projection device is also provided.

A projector includes a main body and a projection lens. The main body includes a light source, liquid crystal panels that modulate light outputted from the light source, and a lens holder to and from which the projection lens is attachable and detachable. The projection lens projects the light modulated, and the lens holder includes a first lens holding mechanism and a second lens holding mechanism that hold the projection lens.

A projection image including a test pattern is projected on a projection surface. The projection image is moved in a first direction. An image of the projection image is captured. A change in the test pattern contained in the projection image the image of which has been captured is detected. When a change in the test pattern is detected, it is determined that the projection image has reached an end of the projection surface.

An optical element adjustment device includes a casing base, an optical element, a bearing element, and a first adjustment module. The optical element is movably disposed in the casing base. The bearing element includes an outer frame bearing the optical element and a shaft portion protruding from the outer frame and penetrating from the casing base. The first adjustment module is disposed on the shaft portion. A screw shank is sleeved on the shaft portion and penetrates from the casing base. The first adjustment element is screwed to the screw shank and abuts against the casing base. A limiting element protrudes from a side surface of the shaft portion and is located next to the screw shank. The first elastic element is disposed between the screw shank and the outer frame, such that the screw shank leans closely to the limiting element.

A method for aligning and merging contents from multiple collaborative workstations. Collaborative workstations are multiple workstations that contribute respective contents to be combined into a single computer-generated output. The content generated from each collaborative workstation is the collaborative content. Individual collaborative content is created from each workstation by a user drawing on a piece of paper that is placed on a workspace surface of the workstation. Collaborative contents contributed by multiple workstations are aligned such that a combined product (i.e., a single computer-generated output) including both virtual and physical content appears to be collaboratively drawn by multiple users on a single piece of paper.

A projection system and a projection method are provided. The projection system includes a first projector and a second projector. The first projector is configured to project a first grid picture onto a projection surface. The second projector is configured to project a second grid picture onto the projection surface. The second grid picture and the first grid picture are blended into a blended projection picture. The first grid picture includes a first overlap region. Grid lines of the first overlap region are displayed in a first color. The second grid picture includes a second overlap region. Grid lines of the second overlap region are displayed in a second color. The first color and the second color are complementary colors. When the blended projection picture is formed, grid lines of an overlap region of the first grid picture and the second grid picture are displayed in a recognition color.

A lamp projecting a starry sky is provided. The lamp projecting the starry sky includes at least one beam generator, a reflecting member with uneven and irregular reflecting surface, a first motor, and at least one first lens. The first motor is connected to the reflecting member through a connecting shaft, the reflecting member is driven to rotate when the first motor rotates, a light beam generated by the beam generator irradiates onto a first side of the reflecting member along an incident light path, and a light beam emitted from the reflecting member forms a moving and layering nebula projection after passing through the at least one first lens. In the lamp, after passing from the reflecting member, the light beam is magnified by the lens, so that the generated starry sky will not be too bright and dazzling, which effectively enhances the layering sense of the starry sky.

Various embodiments described herein provide multi-projector (i.e., two or more) imaging apparatuses utilizing integrated illumination-aimer optics. Embodiments of the present disclosure minimize irreparable component offset to improve overall accuracy associated with the functioning of the apparatuses. Additionally, the integrated illumination-aimer optics enables embodiments disclosed herein to be provided in a significantly smaller form factor than conventional multi-projector imaging apparatuses. An example apparatus includes a near-field imaging lens and a far-field imaging lens, an integrated illumination-aimer optics positioned between the near-field imaging lens and the far-field imaging lens, a near-field illuminator source and a far-field illuminator source positioned for projecting via the integrated illumination-aimer optics, a near-field imaging sensor associated with the near-field imaging lens, a far-field imaging sensor associated with the far-field imaging lens, and an apparatus chassis to align the various components for operation.