1812results about "Spectral modifiers" patented technology

A waist fan includes a housing, a fan assembly arranged in the accommodating cavity and configured to guide airflow from the air inlet to the air outlet, a light-emitting assembly, and a control assembly electrically connected to the light-emitting assembly and configured to control the light-emitting assembly to emit flashing light in different colors and / or warning flashing light. The housing includes an accommodating cavity, an air inlet communicated with the accommodating cavity, and an air outlet communicated with the accommodating cavity.

The present technology relates to a lighting control device that enables effective use of a roof light disposed along the outer periphery of a roof window of the vehicle, a lighting control method, and a vehicle. A lighting control device includes a light control unit that controls a roof light disposed along the outer periphery of a roof window of a vehicle, on the basis of at least one of a state of the vehicle, a situation around the vehicle, a situation inside the vehicle, or an operation on the vehicle. The present technology can be applied to a vehicle that has a roof window, for example.

A lighting device (10) is provided. The lighting device (10) comprises: a light emitting element (11), and a translucent envelope (20) enclosing the light emitting element (11) and having a surface area at least three times bigger than the light emitting area of the light emitting element (11), wherein the envelope (20) is coated with a layer (22) of phosphor with a thickness of 0.05-1.0 mm and the layer (22) of phosphor is configured to block less than 30% of the visible light emitted by the light emitting element (11).

A refrigerator includes a cabinet, in which a storage space is defined, and a door configured to open and close the storage space. The door includes a door body and a panel assembly mounted in front of the door body. The panel assembly includes a lighting device configured to irradiate light, a panel which is configured to define a front surface of the door and through which light is transmitted, a light guide plate provided behind the panel to guide the light irradiated from the lighting device to the panel, and an upper bracket provided above the panel to define a top surface of the panel assembly. The light guide plate extends more upward than an upper end of the panel, and an extending upper end of the light guide plate is accommodated in the upper bracket.

An illumination device includes: a light source part emitting light; a light distribution shape setter setting a light distribution shape of light from the light source part; a storage storing therein light distribution shape data related to the light distribution shape; and a controller controlling the light distribution shape setter based on the light distribution shape data. Further, the light distribution shape setter sets the light distribution shape based on a signal level input from the controller, and when changing the signal level input to the light distribution shape setter from a first level to a second level, the controller changes the signal level from the first level to a third level that is a level between the first level and the second level, and changes the signal level from the third level to the second level after maintaining the third level for a predetermined time period.

The invention discloses an LED dimming system and method, and the system comprises a white light LED which is used for emitting a spectrum in a 400-650 nm wave band; at least three red light LEDs of blue light excitation fluorescent powder respectively emit red light with different central wavelengths, the central wavelength of the first red light LED is 660nm + / -2nm, the half-peak width is less than or equal to 15nm, and an I < n > GaA < l > P material vertical cavity surface emission structure is adopted; the central wavelength of the second red light LED is 730nm + / -3nm, the half-peak width is less than or equal to 20nm, and the second red light LED adopts an A < l > GaAs material quantum well structure; the center wavelength of the third red light LED is 780nm + / -5nm, the half-peak width is less than or equal to 25nm, and a GaAsP material gradient refractive index waveguide structure is adopted; the driving control module comprises three independent constant-current driving units which are used for respectively controlling the current and PWM duty ratio of each red light LED; the optical mixing module is composed of a two-stage integral rod and a micro lens array and is used for realizing uniform mixing of spectrums.

The invention discloses a lighting source and a lighting device. The illumination light source comprises at least one light emitting diode chip emitting light of at least two wave bands; the emergent light at least comprises a plurality of wavelengths in the wave band of 420-740 nm and has spectral continuity; and the optical fiber at least comprises two characteristic wavelengths, and the two characteristic wavelengths comprise at least one of the wavelength of 470-520 nm and the wavelength of 540-600 nm. The light-emitting diode chip capable of emitting at least two wave bands is adopted to obtain the illumination light source, the full-spectrum continuity characteristic is achieved, the color rendering indexes R1-R15 are very high, the reduction degree of an article at night is very high, the recognition capacity of travelers at night is improved, the illumination light source further has several prominent characteristic wavelengths on the basis of the full spectrum, and the illumination light source has the good illumination effect. The LED lamp has the advantages of being high in light and shade visual lighting effect, high in road surface reflectivity, high in rain, fog and haze penetrability and high in alertness, the outdoor lighting safety is comprehensively considered, and the night travel safety is guaranteed.

To provide a light-emitting device having a sharp peak in a wavelength range with a peak wavelength therebetween.SOLUTION: A light-emitting device includes: a plurality of solid-state light sources that emit light having a different peak wavelength from each other and are mounted on a substrate having a wiring pattern; and a phosphor having a fluorescent material, disposed in a traveling direction of the light emitted from the plurality of solid-state light sources and capable of transmitting the light emitted from the plurality of solid-state light sources. A first solid-state light source of the plurality of solid-state light sources is a light source having a peak wavelength in a range of 280 nm or less, and a second solid-state light source different from the first solid-state light source of the plurality of solid-state light sources is a light source having a peak wavelength between 420 nm and 470 nm.SELECTED DRAWING: Figure 1

The invention relates to the technical field of cultural relic exhibition and protection, in particular to a dynamic cultural relic display cabinet based on a mixed reality technology. The display cabinet comprises a cabinet body assembly used for forming a closed cabinet body and placing and displaying exhibition articles, a light assembly used for illumination and illumination adjustment in the cabinet body assembly, a virtual projection assembly used for dynamic observation and display of the exhibition articles in the closed cabinet body, and a monitoring sensing assembly used for monitoring environment data in the cabinet body assembly and controlling the closed environment state. And the networking control assembly is used for uniformly managing all the cabinet body assemblies and accessories thereof in the area. A closed and controllable environment is formed through facilities such as a transparent protective cover, a thermostat and a dryer, cultural relics are effectively prevented from being damaged by environmental factors such as temperature and humidity and dust, the safety of the cultural relics is guaranteed, dynamic three-dimensional display of the cultural relics is achieved through a mixed reality mirror, a projector and a holographic projection cover, immersive and interactive exhibition experience is brought to audiences, and the intellectualization of the cultural relics is achieved. And the exhibition attraction is improved.

A compensation type color mixing system comprises a light source, a light through hole formed in a main light path, three single-color annular light filters arranged on a light emitting light path in parallel at intervals and a driving device used for driving the light filters to rotate, and the three light filters are the C light filter, the M light filter and the Y light filter respectively. A light-transmitting area and a color area which are annularly arranged and connected end to end are arranged on the optical filter; the light source is characterized by further comprising at least one color complementing piece which is arranged on a light emitting path, has the same color type as the light filter and is arranged adjacent to the light filter in parallel at intervals; the shape, the size and the color area shape and the size of the light filter are the same as those of the color complementing piece, the linear gradual change direction of the color area of the light filter is opposite to the light emitting direction of the color complementing piece, and part of the color area of the color complementing piece is selectively and statically arranged on a main light path.

The invention provides a light generating system (1000) comprising light generating devices (110,120,130), a luminescent material (200), a control system (300), optics (500), a polarization control system (600), a diffuser system (1710), and a light exit (1090); wherein: (I) each of the light generating devices (110,120,130) comprise a solid-state light source (10,20,30); the luminescent material (200) is configured to convert at least part of the device light received by the luminescent material (200) into luminescent material light (201): the diffuser system (1710) is configured to diffuse at least part of the device light received by the diffuser system (1710) into diffused device light (711); (II) the optics (500) comprise redirection optics (510); wherein the redirection optics (510) comprise polarization based redirection optics (PPBS1,PBS2) and dichroic based redirection optics (DBS1,DBS2); (III) a first dichroic redirection optics (DBS1) is configured to combine first device light (111) and second device light (121) received by the first dichroic redirection optics (DBS1); the polarization control system (600) is configured to control a polarization of device light propagating from the first dichroic redirection optics (DBS1) to the first polarization redirection optics (PPBS1) via the polarization control system (600); the first polarization redirection optics (PPBS1) is configured to direct device light received from the first dichroic redirection optics (DBS1), in dependence of its polarization, to one or more of (a) the luminescent material (200) via second dichroic redirection optics (DBS2) and (b) the diffuser system (1710) via second polarization redirection optics (PBS2); the second dichroic redirection optics (DBS2) is configured to direct device light received from the first polarization redirection optics (PPBS1) to the luminescent material (200) and to direct the luminescent material light (201) to the light exit (1090); the second polarization redirection optics (PBS2) is configured to direct the device light received from the first polarization redirection optics (PPBS1) to the diffuser system (1710) and to direct diffused device light (711) to the light exit (1090); and (IV) the control system (300) is configured to control a spectral power distribution of system light (1001) of the light generating system (1000).

The present invention relates to the technical field of the preparation of Cr3+-doped fluorescent materials. Disclosed are the preparation of a Cr3+-doped fluorescent material and the use thereof in a plant light supplement lamp. The preparation comprises the following steps: weighing a matrix raw material and a Cr3+-containing raw material according to the stoichiometric ratio, and respectively grinding and then storing same in a dryer; placing the raw materials into a ball milling tank, and subjecting same to planetary ball milling for 3-6 hours; transferring same to an alumina crucible, and pre-sintering same for 2-5 hours; after secondary ball milling, adding a fluxing agent thereto; placing same in a high-temperature furnace and sintering same for 6-10 hours, and furnace cooling same or cooling same under the protection of an inert gas; and firstly coarsely crushing same, then grinding same to 10-30 μm, alternately cleaning same with deionized water and ethanol, drying same in an air dry oven, detecting and screening the product by using a fluorescence spectrophotometer, an X-ray diffractometer and a scanning electron microscope, and remanufacturing unqualified products after adjusting process parameters according to detection results. The present invention has a high light-emitting efficiency, and the spectrum thereof is suitable for plant photosynthetic absorption. When being applied to a light-supplementing lamp, plant growth can be promoted, the plant height and the chlorophyll content are significantly increased, and the natural spectrum is simulated, such that the material is suitable for multiple cultivation scenarios.

The invention discloses an illumination device, an illumination adjusting method and wafer detection equipment. The device comprises an illumination light source, an illumination adjusting device and a wafer detection device, wherein the illumination light source comprises a light-emitting surface for exporting illumination light to the outside; the light-emitting surface adjusting part is used for adjusting the position of the light-emitting surface; the objective lens group comprises a plurality of objective lenses which are different in multiplying power and can be mutually switched, calibration data are pre-stored in the controller and comprise pupil plane size information, pupil plane position information and light-emitting surface position information of the objective lenses different in multiplying power, and the controller is used for adjusting the position of the light-emitting surface by the light-emitting surface adjusting part according to the multiplying power information of the objective lenses and the calibration data. According to the invention, rapid and automatic matching between the illumination system and pupil planes of objective lenses with different multiplying powers is realized, and uneven illumination and stray light caused by mismatching of the pupil planes are effectively eliminated.

This specification discloses a light control film and a display device to which the light control film is applied. The light control film, when applied to a display device, enables precise control of the light output angle, ensuring high transmittance, high brightness, and excellent resolution within the light output angle, and blocking unwanted light that can cause defects such as ghosts or moire. Even when applied to an OLED display, the light control film exhibits the above-mentioned performance without causing defects such as stripes that are noticeable to a viewer. This specification also discloses a display device to which the light control film is applied.

The utility model relates to an LED light source module and an LED light source. The LED light source module comprises a light source plate and a plurality of light-emitting units. The light source plate comprises a first light-emitting area and a second light-emitting area, and the first light-emitting area and the second light-emitting area are symmetrically arranged with respect to a symmetry axis extending in the longitudinal direction and passing through the center of the light source plate. The light-emitting units are arranged on the light source plate in an array mode, and the light-emitting units are distributed in the first light-emitting area and the second light-emitting area in a one-to-one symmetry mode. Each light-emitting unit comprises a red light source device, a green light source device and a blue light source device which are distributed in a preset mode. The distribution positions and orientations of the light source devices in the light emitting units in the first light emitting area are the same, and the distribution positions and orientations of the light source devices in the light emitting units in the second light emitting area are the same. The distribution orientation of the light source devices in the light emitting units in the first light emitting area is opposite to that of the light source devices in the light emitting units in the second light emitting area. The light emitting uniformity of the LED light source module is high, and the lighting requirement of the photography and video recording lamp can be met.

A device includes a LED die having a peak emission at a blue or shorter wavelength, a LED die having a peak emission at a red, orange, yellow, green, or cyan wavelength, and a homogenous light conversion material positioned to receive light emitted from the LED dies. The light conversion material including: (i) a first phosphor compound having a peak emission at a green wavelength; (ii) a second phosphor compound having a peak emission at an orange wavelength; and (iii) a third phosphor compound having a peak emission at a red, orange, yellow, green, or cyan wavelength. The device is a packaged LED device and a relative concentration of the phosphor compounds and a relative luminosity of the LED dies are selected so the device emits white light satisfying a preference P1 and a fidelity F3 according to a TM-30 standard for color rendering.

The utility model belongs to the technical field of lamps, solves the problem that the glare phenomenon of an LED lamp strip in the prior art causes different degrees of damage to vision, and provides an anti-glare polarized light optical lamp strip and a lighting device. Comprising a dimming part, a light source, a shell and an anti-dazzle layer, the dimming part and the anti-dazzle layer are sequentially installed in an inner cavity of the shell in the height direction of the shell, the light source is installed in the dimming part, the anti-dazzle layer is located on the light emitting direction side of the dimming part, and the dimming part is fixed in the shell in an abutting and clamping mode. And the edge of the anti-dazzle layer is matched with the second clamping part, so that the anti-dazzle layer is clamped in the shell. According to the utility model, the anti-dazzle layer is arranged in the light emitting direction of the lamp strip shell, so that the dazzle influence of a light source on the environment is weakened; meanwhile, the dimming piece is directly arranged between the anti-dazzle layer and the light source, the light source is subjected to secondary optical adjustment by combining the small angle of the light source with the light transmitting piece in a specific shape, various small-angle polarization control is achieved, and the small angle of the light source is achieved.

The invention discloses an LED illuminating lamp easy to disassemble and assemble, and relates to the technical field of illuminating devices. Comprising a mounting base, a lampshade detachably connected with the mounting base, a standby power supply arranged at the bottom of the mounting base and a controller. According to the LED street lamp, the middle light-emitting lamp panel, the two side light-emitting lamp panels and the driving assembly are arranged, when power is cut off, the two side light-emitting lamp panels rotate downwards, an isosceles trapezoid structure is formed between the two side light-emitting lamp panels and the two inclined plates, and at the moment, the standby power source supplies power to the side light-emitting lamp panels and the middle light-emitting lamp panel; light on the two longitudinal sides of the middle light-emitting lamp panel can irradiate the ground to illuminate walking people, and light in the middles of the side light-emitting lamp panels and the middle light-emitting lamp panel penetrates through the two full-color light-transmitting plates and the half-color light-transmitting plates combined with the full-color light-transmitting plates to irradiate the walls on the two sides of the channel and the ground of the channel. The LED lighting lamp has a guiding function after power failure, and therefore evacuation direction guidance can be provided for people in time.

The invention relates to the technical field of semiconductor display, in particular to a vehicle-mounted high-color-gamut QD-LED backlight display module which further comprises a high-color-gamut QD-LED lamp bead which serves as a lateral light source and is arranged on at least one side edge of a light guide plate. The high-color-gamut QD-LED lamp bead comprises a circuit board and a plurality of LED lamp beads welded on the circuit board, and the LED lamp beads are patch devices packaged by composite luminescent materials of green quantum dots and KSF fluorescent powder. The circuit board and the LED lamp beads on the circuit board are integrally packaged by a silica gel packaging layer, and the silica gel packaging layer is connected with the light guide plate through a light guide protection layer, so that the high-color-gamut QD-LED lamp beads and the light guide plate are integrated. Through multi-dimensional collaborative innovation, the problems of reliability, light quality, mechanical durability and the like are comprehensively solved, a vehicle-mounted display backlight solution which is ultrahigh in color gamut, high in brightness, high in uniformity, high in reliability and long in service life is created, and high commercial value and market prospects are achieved.

A simulated candle flame structure of an electronic candle is provided. The electronic candle includes a candle body. A flame simulating board is mounted on a top end of the candle body. A light emitting element is arranged in the interior of the candle body. The light emitting element emits light toward the flame simulating board to be reflected thereby so as to simulate the appearance of a candle in burning. A wick flame pattern is provided on a bottom end of the flame simulating board. The wick flame pattern can be directly transfer-printed on the flame simulating board or is adhesively attached to the flame simulating board, so that the light from the light emitting element is reflected to demonstrate the appearance of a wick burning in a flame, thereby displaying a more realistic electronic candle.

The invention relates to the technical field of electronic glow sticks, in particular to a detachable glow stick and a using method thereof.The detachable glow stick comprises a grip, a sealing cover and a plurality of detachably-connected fluorescent assemblies, a battery assembly is arranged in the grip, the multiple fluorescent assemblies are connected end to end, the grip is connected with the fluorescent assembly at the bottom, and the sealing cover is connected with the fluorescent assembly at the top. The fluorescent assembly comprises a bearing assembly, a rotatable light-emitting assembly and a plastic shell which is fixedly connected with the light-emitting assembly and wraps the bearing assembly, and when the light-emitting assembly rotates, the fluorescent assembly changes the fluorescent color; the fluorescent rod is split into the multiple fluorescent assemblies, so that the product has the function of adjusting the size of the product, the long-strip-shaped fluorescent rod is formed after the multiple fluorescent assemblies are connected end to end and installed, the long-strip-shaped fluorescent rod can be suitable for scenes such as concerts and performance, and the multiple fluorescent assemblies can be split to form the long-strip-shaped fluorescent rod. And then the split fluorescent assembly is used as a block-shaped fluorescent rod and is placed at home as a noctilucent lamp.

A system for free-space optical coupling between a two-dimensional optical transmitter array and a two-dimensional optical receiver array using planar optical elements includes a transmitter array configured to emit one or more optical beams, a first planar optical element configured to receive the optical beams from the transmitter array and generate one or more intermediate optical beams, a first spacer disposed between the optical transmitter array and the first planar optical element, a receiver array, a second planar optical element configured to receive the intermediate optical beams and generate one or more output optical beams directed to the receiver array, and a second spacer disposed between the second planar optical element and the optical receiver array. The TX and RX portions of the optical coupling system can be used in a LiDAR system as a light emitting element (beam steerer) and a detector, respectively. The planar optical element is configured to provide a wide field of view for the LiDAR.

A phosphor (1) is specified with the general formula EA3-3 / 2u-xw-zSE1+u+xT6-y-x+zDy+x-zN11-y-2wOy+2w:A, where- EA is selected from Mg, Ca, Sr, Ba, Zn or combinations thereof,- SE is selected from the group of rare earth elements or combinations thereof,- T is selected from the group of tetravalent elements or combinations thereof,- D is selected from the group of trivalent elements or combinations thereof,- A is selected from Ce, Eu, Mn, Bi, Tb, Dy, Ni, Cr, Cu, Er or combinations thereof,-− 2*(3−3 / 2u−x−w−z)+3*(1+u+x)+4*(6−y−x+z)+3*(y+x−z)−3*(11−y−2w)−2*(y+2w)=0,-0≤y+x−z≤6,-0≤y+2w≤11,and- if u+x > 0, then w ≤ 0 and z ≤ 0; or- if u+x = 0, then w > 0 or z > 0.Furthermore, an optoelectronic component (10), a method for producing a phosphor (1), a turning signal light (17) and a street light (18) are specified.

The transmission-type wavelength conversion device comprises a laser scattering layer, a heat sink substrate layer, a wavelength conversion layer and a light homogenizing layer which are sequentially arranged in a stacked mode. Wherein the laser scattering layer is used for scattering laser from a form of Gaussian distribution of energy and strip-shaped light spots into a form of weak Gaussian distribution of energy and round or similar round light spots, the heat sink substrate layer is a light-transmitting substrate with the laser transmittance being 75% or above, and the wavelength conversion layer is used for converting at least part of the laser into fluorescent light. And the light homogenizing layer is used for scattering fluorescent light and residual laser. According to the device, on the premise that no extra lens is added and the size of the white laser light source is not enlarged, through the dual effects of the laser scattering layer and the light beam homogenizing layer, effective shaping of laser spots can be achieved, and the color uniformity and the illumination quality of the white laser light source can be remarkably improved; and a feasible solution is provided for application of a miniaturized and integrated white laser light source in a circular light spot scene.

Provides is an ultra-microlight transmission device using secondary electrons according to various embodiments of the present invention for implementing the above-objects. The ultra-microlight transmission device includes a light source module configured to generate light, a housing which includes an interior space and performs spectroscopy and diffuse reflection on light introduced into the interior space, a first filter unit configured to convert the spectroscopic and diffusely reflected light into monochromatic light, and a second filter unit configured to cause diffraction and interference for the converted light.

The invention discloses a multi-channel LED spectrum adjusting method and system. The method comprises the steps that a light source containing three LED channels is configured; wherein the first LED channel light source outputs short-wave purple light of 400-430 nm, and a purple light chip packaged by packaging glue containing first fluorescent powder is adopted; the second LED channel light source outputs full-wave-band white light of 400-700 nm, and a purple light chip packaged by packaging glue containing second fluorescent powder is adopted; the third LED channel light source outputs long-wave red light of 700-780 nm, and a blue light chip packaged by packaging glue containing third fluorescent powder is adopted; collecting spectral data of a target area through a four-node cross-distributed spectral sensor to obtain a current spectrum; determining a deviation value between the current spectrum and a preset template; and dynamically adjusting the three LED channel light sources according to the deviation value. The radiation intensity of short-wave purple light and long-wave red light can be remarkably improved, the color rendering index is optimized, and the high-precision illumination requirement is met.

A beam projection apparatus includes a light source, micromirror component, a light guide lens set, a projection lens, a condensing lens with a lens portion and an asymmetrical lens portion extending from the lens portion and having a cut surface, and a wavelength conversion component disposed at a side of the condensing lens for at least partially converting a wavelength of a color light and reflecting the color light to the condensing lens. The light source is disposed corresponding to the cut surface and emits the color light. The micromirror component is disposed at another side of the condensing lens relative to the wavelength conversion component. The light guide lens set is disposed on a light exit axis of the lens portion to guide the color light to be incident to the micromirror component for forming a projection beam. The projection lens receives the projection beam for optical projection.

The invention discloses a small-size wavelength conversion device and a light source device thereof, and belongs to the technical field of optical illumination. The wavelength conversion device can convert most of the exciting light with the first polarization state into excited light and change the polarization state of the remaining exciting light. The light source device comprises the wavelength conversion device, an excitation light source, a dichroscope, a shaping lens group and a reflector. Light splitting and light combination are performed through the dichroscope based on the polarization state and the wavelength, and the unused exciting light is returned to the wavelength conversion device for recycling by using the reflector, so that an independent blue light processing light path is canceled. The size of the light source is effectively reduced, the cost is reduced, and the light source is easier to adapt to an existing stage lamp structure.

The invention provides a light generating system comprising one or more light generating devices, a luminescent material, a diffuser element, a polarization changing element, central optics, and a control system, wherein: (A) the one or more light generating devices are configured to generate device light; wherein the one or more light generating devices comprise light sources selected from a laser diode and a superluminescent diode; wherein the device light received by the central optics comprises a controllable polarization; (B) the luminescent material is configured to convert at least part of the device light received by the luminescent material into luminescent material light; (C) the diffuser element is configured to diffuse at least part of the device light received by the diffuser element thereby providing diffused device light while maintaining at least part of the polarization; (D) the polarization changing element is configured in an optical path of the device light between the central optics and the diffuser element; (E) the central optics comprises (i) a central optics polarizing beam splitter, and (ii) a central optics dichroic beam splitter; wherein the central optics are configured to transmit and / or reflect device light, diffused device light, and luminescent material light, received by the central optics in dependence of one or more of their polarizations and their spectral power distributions; (F) the control system is configured to control the polarization of the device light received by the central optics; (G) the light generating system is configured to provide system light comprising one or more of diffused device light and luminescent material light; and wherein the light generating system is configured such that in a first operational mode of the light generating system (a) at least part of the device light irradiates the luminescent material via the central optics, and the luminescent material light escapes from the light generating system via the central optics, and (b) at least part of the device light irradiates the diffuser element via the central optics, and at least part of the diffused device light escapes from the light generating system via the central optics.

The starry sky projection lamp comprises an upper shell, a lower shell and an adjusting assembly, and the upper shell is provided with a first light outlet, a second light outlet and a third light outlet; a mounting cavity is defined between the upper shell and the lower shell, a controller, a battery, a nebula lamp assembly, a star lamp assembly and a moon-shaped lamp assembly are arranged in the mounting cavity, the nebula lamp assembly is used for emitting water-wave-shaped light, the star lamp assembly is used for emitting star-shaped light, and the moon-shaped lamp assembly is used for emitting moon-shaped light; the adjusting assembly comprises a base, a magnet and an iron ball, the magnet is fixedly arranged at the bottom of the lower shell, a conical hole is formed in the lower end of the magnet, the diameter of the conical hole is gradually reduced in the axial direction of the magnet towards the direction close to the lower shell, the iron ball is arranged at the upper end of the base and movably connected to the conical hole, and the magnet can attract the iron ball. Therefore, the lower shell can be fixed in a universal rotation manner. The projection angle and direction can be adjusted according to needs, so that the user experience is improved.