A projection device including a projection unit, an image capture device and a control unit is provided. The projection unit includes a light source. The projection unit is configured to project an image picture to a projection area. The image capture device is configured to obtain an image capture picture including the image picture in an image capture range. The image capture range is larger than the projection area. The control unit is coupled to the image capture device. The control unit is configured to determine, according to a picture variation value of the image capture picture, whether to adjust the brightness of the light source. In addition, a brightness adjusting method used for the projection device is also provided. According to the disclosure, the brightness of the light source of the projection device may be properly adjusted according to environmental factors.

An optical system forms an intermediate image between a reduction-side conjugate plane and a enlargement-side conjugate plane. The optical system includes a first optical system and a second optical system including a lens and disposed on the enlargement side of the first optical system. The lens has a first transmission surface, a reflection surface disposed on the enlargement side of the first transmission surface, and a second transmission surface disposed on the enlargement side of the reflection surface. At least one of the reflection surface and the second transmission surface is a free-form surface.

A display device includes a base having a first surface, and a second surface at an opposite side to the first surface, a reflective light modulation element disposed on the first surface, and electrically coupled to the base, a drive circuit board having a third surface electrically coupled to the second surface, and a fourth surface at an opposite side to the third surface, and configured to drive the reflective light modulation element, a vapor chamber having a heat receiver, a heat radiator, and a fluid housing chamber, and a radiation member coupled to the heat radiator in a thermally-transferable manner, wherein the heat receiver has a first area opposed to the second surface, and a second area opposed to the fourth surface, and the first area projects toward the base side from the second area, and is coupled to the second surface in a thermally-transferable manner.

Provided is a wavelength conversion module including a driving assembly, a metal substrate, a first and a second concave-convex structure, a transparent plate, and a wavelength conversion layer. The driving assembly is connected to the substrate and drives the substrate to rotate. The substrate and the first and the second concave-convex structure are integrally formed. The first and the second concave-convex structure are disposed around the center, and the second concave-convex structure surrounds the first concave-convex structure. The substrate has a first balance hole and an accommodating groove. The first concave-convex structure is located between the accommodating groove and the center. The first balance hole is located in the accommodating groove and penetrates the substrate. The transparent plate is disposed in the accommodating groove of the substrate and covers the first balance hole. The wavelength conversion layer is arranged in an annular pattern with the transparent plate.

A shaping system and method of shaping with the shaping system. The shaping system may include a spatial light modulator. The shaping system may include a radiation source to illuminate the spatial light modulator with actinic radiation. The shaping system may include a beam splitter configured to receive actinic radiation from the spatial light modulator and emit a first image of the spatial light modulator and a second image of the spatial light modulator. The shaping system may include a beam combiner configured to receive the first image and the second image and emit a combined image. The combined image may include the first image; and the second image offset from the first image. The shaping system may include a projection system configured to receive the combined image and illuminate formable material between a template and a substrate with a projected image at a plane of the formable material.

A projection device and a projection method thereof are provided. The projection device includes a spatial modulator, a first optical actuator, a driving circuit, and a control circuit. The spatial modulator modulates a beam to generate an image beam. The driving circuit is coupled to the first optical actuator, determines a swinging mode of the first optical actuator according to an input video signal, and converts a display frame into sub-display frames corresponding to the swinging mode. The control circuit is coupled to the spatial modulator and the driving circuit, controls the spatial modulator to generate the image beam according to the sub-display frames, and outputs synchronization signals corresponding to the sub-display frames to the driving circuit. The driving circuit drives the first optical actuator to swing according to the synchronization signals and the swinging mode to change an optical path of the image beam to generate a projection image.

A projection system and a projection method are provided. The projection system includes a digital micromirror device, a digital light processing chip, and a display processing chip. The display processing chip receives a first image signal with a variable frame rate from an external signal source, and outputs a second image signal with one of a plurality of fixed projection frame rates to the digital light processing chip according to the first image signal and one of the fixed projection frame rates supported by the projection system. The digital light processing chip drives the digital micromirror device according to the second image signal. The projection system and the projection method of the invention may realize a variable frame rate function and effectively improve smoothness of a projection image.

In an example, the present invention provides an optical engine apparatus. The apparatus has a laser diode device, the laser diode device characterized by a wavelength ranging from 300 to 2000 nm or any variations thereof. In an example, the apparatus has a lens coupled to an output of the laser diode device and a scanning mirror device operably coupled to the laser diode device. In an example, the apparatus has an un-patterned phosphor plate coupled to the scanning mirror and configured with the laser device; and a spatial image formed on a portion of the un-patterned phosphor plate configured by a modulation of the laser and movement of the scanning mirror device.

The present disclosure provides a Lissajous dual-axial scan component (100) that includes an outer frame (102), a first pair of supports (104A-B), a second pair of supports (106A-B), an inner frame (108), a mirror (110), a sensing arrangement (112), a controller (114) and a memory (116). The memory (116) stores multiple tuples each including a first-axial bias frequency value, a second-axial bias frequency value, and a phase difference between actual driving frequencies (i.e. a first-axial bias frequency and a second-axial bias frequency) of the mirror (110). The controller (114) is coupled to the sensing arrangement (112) to receive signals indicative of current resonant frequencies of the mirror (110) and configured to select one of the tuples from the memory (116) based on the signals received from the sensing arrangement (112) and set the applied bias frequencies, and their phase difference, according to the selected tuple.

A display method includes: displaying, by a first display device, a first image including a plurality of control points; receiving, by the first display device, a first operation of selecting a selection point that is at least one control point among the plurality of control points; and projecting, by a second display device different from the first display device, a third image including a second image corresponding to the selection point at a first position corresponding to a position of the selection point in the first image.