Abstract: A light source module includes first to second laser arrays, first to fourth light guiding elements, and an optical lens element. The first laser array provides first light and second light. The second laser array provides third light and fourth light. The first to the fourth light guiding elements are located between the first and the second laser arrays. The first light guiding element is adapted to reflect the first light. The second light guiding element is adapted to reflect the second light and allowing the first light to pass through. The third light guiding element is adapted to reflect the third light. The fourth light guiding element is adapted to reflect the fourth light and allowing the third light to pass through. An orthographic projection of the second light guiding element partially overlaps an orthographic projection of the fourth light guiding element on the optical lens element.

Abstract: A configuration method for projecting apparatus and a projecting apparatus are provided. In the method, at least one first identification pattern is projected, where the first identification pattern records a first configuration data of a target projecting apparatus. A first captured image is obtained, where the first captured image captures the first identification pattern. The first configuration data of the target projecting apparatus is identified from the first captured image. At least one parameter of a projecting apparatus is configured according to the first configuration data. Therefore, the efficiency of configuring projecting apparatuses could be improved.

Abstract: The invention relates to a wavelength conversion device and a manufacturing method thereof. The manufacturing method includes: mixing a fluorescent material, a binding material, and a solvent to form a mixed solution. The volume percentage concentration of the fluorescent material is about 50% to 80%, the volume percentage concentration of the binding material is 10% to 40%, and the volume percentage concentration of the solvent is 10% to 30%. The mixed solution is coated on the substrate. A heat treatment is performed on the mixed solution at a first temperature to form a wavelength conversion layer. The first temperature is higher than the boiling point of the solvent, and the wavelength conversion layer has a porosity of 10% to 30%. The wavelength conversion device manufactured by the manufacturing method of the invention has better toughness, and may provide stable optical quality and improve image brightness.

Abstract: A display device is provided. At least one base color of a red base color, a green base color, and a blue base color of the display device is formed by mixing at least two primary colors of the three primary colors. The display device of the invention may decrease the issue of color distortion.

Abstract: An anti-peeping display method and an anti-peeping display device are provided. The anti-peeping display method includes the following. A current display state of the anti-peeping display device is obtained. A designated display state is received and whether the designated display state matches the current display state is determined. In response to a determination result that the designated display state does not match the current display state, the anti-peeping display device is controlled to perform a progressive switching operation.

Abstract: An electrically controllable viewing angle switch device is provided with a first substrate, a second substrate, a liquid crystal layer, multiple spacers, and multiple light-shielding patterns. The first substrate and the second substrate are overlapped with each other. The liquid crystal layer and the multiple spacers are disposed between the first substrate and the second substrate. The multiple light-shielding patterns are disposed on the second substrate. The orthographic projection area of each spacer on the second substrate is less than or equal to the orthographic projection area of each light-shielding pattern on the second substrate. The orthographic projection of each spacer on the second substrate is located within the orthographic projection of each light-shielding pattern on the second substrate. A display apparatus using an electrically controllable viewing angle switch device is also provided, in which light leakage near the spacer is extremely slight.

Abstract: An illumination system including a plurality of light-emitting elements, a light combining module, a first lens group, a second lens group and a wavelength conversion device is provided. The plurality of light-emitting elements provide a plurality of first light beams. The light combining module is used for combining the plurality of first light beams into a second light beam. The wavelength conversion device is used for converting the second light beam into the third light beam or reflecting the second light beam. The first lens group has a first central axis. The first lens group includes a first part and a second part which are symmetrical with respect to the first central axis and have equal areas, and a luminous flux of the second light beam passing through the first part is greater than a luminous flux passing through the second part.

Abstract: A light source module includes a first to a fourth laser diode array and a first light combiner to a third light combiner. The first light combiner includes a plurality of first transmissive regions and a plurality of first reflective regions arranged in an alternate order along a first arrangement direction to guide a first light and a second light to the second light combiner. The second light combiner includes a plurality of second transmissive regions and a plurality of second reflective regions arranged in the alternate order along a second arrangement direction to guide first light to a third light to the third light combiner. The third light combiner includes a plurality of third transmissive regions and a third reflective region to guide the first to fourth light to be transmitted in the second direction.

Abstract: A projection device includes a shell, a lens, two first ribs, two second ribs, and a sliding cover. The shell has a top plate, a left sidewall, and a right sidewall, the top plate is respectively connected to the left sidewall and the right sidewall, and the top plate has an opening. The lens is disposed in the shell and exposed by the opening. The two first ribs are disposed on the top plate, extending directions of the two first ribs are perpendicular to the left sidewall and the right sidewall, and the opening is disposed between the two first ribs. The sliding cover is slidably disposed on the shell for covering the opening. The two second ribs are disposed on a top cover body of the sliding cover, and one of the two second ribs is located between the two first ribs.

Abstract: A projection device of the present invention includes a casing, a light source module, a light source thermal module, a fan, and a projection lens; wherein the light source module, the light source thermal module, the fan and the projection lens are disposed in the casing, and the casing has a first side wall, a second side wall, and a bottom plate, wherein the first side wall includes a first air inlet, and the second side wall includes an air outlet; the orthographic projection range of the air outlet on the first side wall overlaps with the orthographic projection range of the light source thermal module on the first side wall, and the orthographic projection range of the projection lens on the first side wall does not overlap with the orthographic projection range of the light source thermal module on the first side wall.

Abstract: An optical module includes a frame body and an optical element. The frame body includes at least one fixing portion, at least one frame portion, at least one shaft portion, and at least one reinforcement structure. The frame portion is connected to the fixing portion through the shaft portion. The reinforcement structure is connected to the frame portion and forms at least one fracture. The position of the fracture corresponds to the at least one shaft portion. The optical element is disposed in the frame portion. In addition, a projection device having the optical module is also provided.

Abstract: Disclosed are an optical engine module and a projection device. The optical engine module includes a housing, a prism component, a light valve, an air guiding channel, a first fan, and a first heat-dissipating module. The housing has a first opening and a second opening. The prism component is disposed in the housing. The light valve is disposed in the housing. The air guiding channel is disposed outside the housing and communicates with the first opening and the second opening of the housing. The first fan is disposed in the air guiding channel. The first heat-dissipating module includes a first heat-dissipating fin disposed in the air guiding channel, and a second heat-dissipating fin disposed outside the air guiding channel.

Abstract: An illumination system provides an illumination light beam and includes a light source device providing a first light beam, a dichroic element, a lens module, and a wavelength conversion element disposed on a transmission path of the first light beam and configured to convert the first light beam into a second light beam. The dichroic element is disposed between the light source device and the wavelength conversion element, guides the first light beam from the light source device to the wavelength conversion element, and transmits the second light beam from the wavelength conversion element. The lens module is disposed between the dichroic element and the wavelength conversion element. The lens module includes a first lens element including a first surface and a second surface opposite to each other, and at least one of the first surface and the second surface is a Fresnel structure surface.

Abstract: A wearable projection device includes a main body, an optical-mechanical module, a waveguide module, a first thermally conductive plate, and a control module. The main body has a display portion and a support portion connected to each other. The optical-mechanical module is disposed at the display portion and includes at least one light source. The waveguide module is disposed at the display portion. The first thermally conductive plate is connected to the light source and extends from the display portion to the support portion. The control module is electrically connected to the optical-mechanical module, so that an image generated by the optical-mechanical module is displayed on the display portion by the waveguide module. The wearable projection device is able to increase a heat dissipation area through the first thermally conductive plate, so that the wearable projection device may achieve an improved heat dissipation effect and have an improved display quality.

Abstract: A display apparatus, including a first electrically controlled liquid crystal cell and a second electrically controlled liquid crystal cell, is proposed. The first electrically controlled liquid crystal cell includes a first substrate, a second substrate, a first liquid crystal layer, and a touch electrode layer. The first liquid crystal layer and the touch electrode layer are disposed between the first substrate and the second substrate. The second electrically controlled liquid crystal cell is disposed on one side of the first substrate of the first electrically controlled liquid crystal cell and overlapping the first electrically controlled liquid crystal cell. A spacer layer or a conductive layer is disposed between the first electrically controlled liquid crystal cell and the second electrically controlled liquid crystal cell, and the spacer layer or the conductive layer is disposed on a surface of the first substrate facing away from the first liquid crystal layer.

Abstract: A light adjustment module is suitable for being disposed on a transmission path of a light beam. The light adjustment module comprises a housing, a moveable plate, a diffuser, and a light sensor. The housing comprises a base and a cover connected to each other. The cover has a light entrance. The moveable plate is disposed between the base and the cover. The moveable plate moves relative to the housing along a moving direction. The diffuser is disposed on the moveable plate and the transmission path of the light beam from the light entrance. The light sensor is disposed on the base to sense the light beam from the diffuser. The diffuser has at least two regions arranged in the moving direction. The at least two regions respectively have different optical properties. The light beam has different brightness after respectively passing through the at least two regions.

Abstract: An optical lens is provided. The optical lens includes a first lens element to a fifth lens element sequentially arranged from a light incident side to a light exit side. An image generation device is disposed at the light incident side, and the optical lens is configured to receive an image beam provided by the image generation device. The image beam forms a stop at the light exit side. The stop has a minimum cross-sectional area of beam shrinkage of the image beam. The optical lens provided by the invention exhibits good optical quality and thermal stability.

Abstract: A projection apparatus includes an illumination system, a prism assembly, a first light valve, a second light valve and a projection lens. The illumination system includes a blue light emitting element, a red light emitting element, a wavelength conversion device, a dichroic assembly, a first light diffusing element and a second light diffusing element. The second light diffusing element has a diffusion area and a non-diffusion area. The diffusion area is located on a transmission path of a blue beam from the dichroic assembly, and the non-diffusion area is located on a transmission path of a green beam from the dichroic assembly. The prism assembly has a dichroic film. The dichroic film is configured to transmit a red beam to the first light valve. The dichroic film is configured to transmit the green beam and the blue beam to the second light valve.

Abstract: An illumination system and a projection apparatus are provided. The illumination system includes a blue light-emitting element, a red light-emitting element, a wavelength conversion device, a dichroic assembly, a first light diffusion element, and a second light diffusion element. The wavelength conversion device includes a reflective region and a wavelength conversion region. The wavelength conversion region is configured to convert a blue light beam emitted by the blue light-emitting element into a green light beam. The dichroic assembly is disposed between the blue light-emitting element and the wavelength conversion device. The first light diffusion element is disposed between the red light-emitting element and the dichroic assembly. The second light diffusion element has a diffusion region and a non-diffusion region. The diffusion region is located on a transmission path of the blue light beam. The non-diffusion region is located on a transmission path of the green light beam.

Abstract: A projection device and a safety protection method of the projection device are provided. The projection device calculates a warning range according to lens information. Whether an object enters the warning range is detected. The projection device is controlled to reduce brightness of a light source or turn off the light source in response to the object entering the warning range. The projection device and the safety protection method thereof proposed by the disclosure can effectively ensure the usage safety of the projection device.