Abstract: A projection system and a control method of a driving current thereof are provided. A power supply of an illumination module provides the driving current to drive a light source to provide an illumination beam. A filter wheel receives the illumination beam and filtered beams are generated. The illumination beam passes through the filter wheel during a first period and a first filtered beam is generated. The illumination beam passes through the filter wheel during a second period and a second filtered beam is generated. The filtered beams include the first filtered beam, the second filtered beam, and an intermediate filtered beam generated during an intermediate period between the first and second periods. A control device controls the power supply to continuously provide the driving current from the first period, through the intermediate period, to the second period.

Abstract: A projection system includes a light source, a projection lens, and a light-adjusting diaphragm element. The light source emits a first light having a first dominant wavelength range and a second dominant wavelength range. The projection lens is disposed on the path of the first light. The light-adjusting diaphragm element, disposed between the light source and the projection lens, has an opening and a light shielding area outside the opening, a filter is disposed in the opening, wherein a part of the first light is blocked by the light shielding area, a wavelength band corresponding to the first dominant wavelength range of other part of the first light passes through the opening, and a wavelength band corresponding to the second dominant wavelength range of the other part of the first light is blocked by the filter to become a second light having a narrow wavelength range.

Abstract: A light source device includes: a first light emitting element that emits first wavelength band light; a fluorescence wheel including a fluorescence emission region with which fluorescence excited by the first wavelength band light is emitted as second wavelength band light; a second light emitting element that emits third wavelength band light; a combining unit that combines the first wavelength band light, the second wavelength band light, and the third wavelength band light; a color wheel; and a CPU that controls the first light emitting element, the second light emitting element, the fluorescence wheel, and the color wheel, wherein the CPU performs synchronization control on the fluorescence wheel and the color wheel, and performs control to shift a synchronization position of the color wheel with respect to the fluorescence wheel in accordance with an output mode.

Abstract: In various embodiments, an optical system is provided. The optical system includes two honeycomb condensers, which are connected one behind the other and in each case have two lenticular array sheets, which are connected one behind the other, and at least one diffuser which is connected downstream of the honeycomb condensers.

Abstract: 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.

Abstract: A wheel apparatus includes a substrate rotatable around a rotation axis, and a plurality of optical elements respectively formed in a plurality of regions different from each other around the rotation axis on the substrate and having wavelength characteristics different from each other. The regions of the plurality of optical elements are adjacent to each other via boundary lines including linear sections. The linear sections of the boundary lines intersect with respective straight lines along the radius of the substrate at the same intersection angle greater than 0 degrees and less than 90 degrees.

Abstract: A lighting apparatus with an image-projecting function that is convenient for a user can be provided. The lighting apparatus includes: an illuminating unit that emits illumination light; and a projection-type image display unit that projects an image. The projection-type image display unit is configured so that a setting menu screen settable about an image displayed by the projection-type image display unit can be displayed.

Abstract: The projector includes a cooler cooling a cooling target based on transformation of a refrigerant into a gas. A refrigerant generator of the cooler includes a moisture absorption/desorption member, a first blower feeding air to the moisture absorption/desorption member, a first heat exchanger, a second blower circulating air inside a circulation channel passing through the first heat exchanger and the moisture absorption/desorption member, a second heat exchanger at least partially disposed in the circulation channel. The second heat exchanger includes a thermoelectric element, a first heat-transfer member coupled to a heat absorption surface of the thermoelectric element, and a second heat-transfer member thermally coupled to a heat dissipation surface of the thermoelectric element. The first heat-transfer member cools the air flowing through the circulation channel. The second heat-transfer member has a heat dissipation section configured to heat the air which was cooled by the first heat-transfer member.

Abstract: The present disclosure describes a laser assembly. The laser assembly includes a support comprising at least one mounting groove. The laser assembly includes at least one laser mounted in the at least one mounting groove in a one-to-one correspondence. Each of the at least one laser includes a light emitting component configured to emit a light beam. A beam-shaping component is disposed at a light path of the light emitting component. The beam-shaping component includes a light incident surface disposed close to the light emitting component, the light incident surface is configured to transmit the light beam emitted from the light emitting component toward an opening of the mounting groove, and the light incident surface is configured to change a divergence angle of the light beam along at least one of a fast axis direction or a slow axis direction of the light beam.

Abstract: The disclosure relates to an optical security feature that is based on a single axis alignment of mirrors or facets in a structured surface that forms a micro mirror array. In an aspect, a device is described that includes a reflecting structure on a first layer, where the reflecting structure has a top surface with multiple embossed facets arranged in a spatial orientation that produces a flat ring optical effect upon incidence of light. In another aspect, a method for making the device is described that provides a reflecting layer and produces the reflecting structure on the reflecting layer with multiple facets arranged in the spatial orientation to produce the flat ring optical effect. In yet another aspect, an apparatus for making the device is described that includes a pressing device and a stamping device to transfer a pattern of the reflecting structure to a reflecting material.

Abstract: An image display device includes a display unit which displays a first image and a second image, and a projection optical system which directs light of the first image and light of the second image toward a windshield. The display unit displays the first image and the second image in different display areas on the same plane. The projection optical system sets an image point of the light of the first image and an image point of the light of the second image, so that a first virtual image and a second virtual image are formed at positions having different distances from a viewing point within a visible area.

Abstract: A display device includes an image display unit that displays a first alert image in response to an alert at a first level, an image projection unit that displays a second alert image in response to an alert at a second level. The second image display unit overlaps the first image display unit. The first alert image appears at a position different from a surface of the second image display unit.

Abstract: An illuminator includes a first light source unit that includes a first light source region, a second light source unit, and a light ray flux adjusting system. The first light source region outputs parallelized first color light. The first light source unit outputs first light containing the first color light. The second light source unit outputs parallelized second light thicker than the first light. The second light is formed of second color light having a color different from the color of the first color light. The light ray flux adjusting system is in the optical path of the first light. The difference in thickness between the first light and the second light on the downstream of the light ray flux adjusting system is smaller than the difference in thickness between the first light and the second light on the upstream of the light ray flux adjusting system.

Abstract: According to one implementation, an image display system includes a motor configured to spin a rotor, first and second projectors, a projection screen having a first projection surface on a first side and a second projection surface on a second side opposite the first side, and a controller. The controller causes the motor to spin the rotor that spins the projection screen, the first projector, and the second projector about an axis, displays a first perspective of an image on the first projection surface using the first projector, and concurrently with displaying the first perspective of the image on the first projection surface, displays a second perspective of the image on the second projection surface using the second projector.

Abstract: A system including a vessel having a vessel body to hold liquid, and an image source having one or more images. The vessel includes one or more partially reflective planar portions to reflect the one or more images of the image source to generate a virtual image within the vessel body based on the one or more images.

Abstract: An optical system includes a reflective optical system on a magnification side along an optical path of the projection optical system and a refractive optical system on a reduction side along the optical path. The reflective optical system includes one reflective optical element having a power. The refractive optical system includes a front group on the magnification side and a rear group on the reduction side. The front group having, in order from the magnification side toward the reduction side, a first lens group with a positive or negative refractive power, a second lens group, and a third lens group with a positive refractive power. The rear group has a positive refractive power. The first lens group moves to the magnification side, and the second lens group and the third lens group move to the reduction side in a change in focus from a long distance to a short distance.

Abstract: A projection system includes a light emitting device, a light valve and a control device. The light emitting device emits light of colors at least including a first color, a second color and a third color, and the third color is a color mixing the first color and the second color. The control device acquires gray scale values corresponding to at least the first color and the second color of each pixel point in an input image, and determines gray scale values corresponding to the first color, the second color and the third color of a corresponding pixel point in a pre-displayed image according to the gray scale values corresponding to the first color and the second color. The present disclosure also provides an image modulation method applied to the projection system.

Abstract: An imaging optical system includes a plurality of lens groups each moving such that spaces between each one of the plurality of lens groups change during a zooming. The imaging optical system conjugates a conjugate point on a magnification side and an intermediate imaging position, and conjugates a conjugate point on a reduction side and the intermediate imaging position. The imaging optical system includes a first lens group located at a furthest place on the magnification side and a rear group in this order from the magnification side toward the reduction side. The first lens group includes a field curvature correction lens group moving along an optical axis when an amount of a field curvature is changed, and a focusing lens group. The imaging optical system satisfies condition (4) below: |{(1??cw2)×?crw2}/{(1??fw2)×?frw2}|<0.

Abstract: An imaging optical system consists of a first lens group and a second lens group, in order from a magnification side along an optical axis, an intermediate image is formed between the first lens group and the second lens group on the optical axis, at least one of the first lens group or the second lens group includes a reflector that bends the optical axis, the second lens group includes a movable lens group that moves during zooming, and predetermined conditional expressions are satisfied.

Abstract: The present invention relates to the introduction, in an electro-optical transfer function that converts an encoded signal into an output signal, of a first calibration parameter that is determined based on a measurement of a luminance of black performed in the film theatre. Thanks to the invention, the movie image takes into account the actual conditions that affect the black rendering in the theatre.