54results about How to "Increase illumination" patented technology

The invention provides an optical lens, and the optical lens comprises a first lens with negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the third lens has positive focal power, and the object side surface of the third lens is a convex surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has focal power; the sixth lens has focal power; a seventh lens with focal power; wherein one of the fifth lens and the sixth lens has positive focal power, the other one of the fifth lens and the sixth lens has negative focal power, and the fifth lens and the sixth lens are glued to form a glued lens. The problem that high resolution, miniaturization, small distortion, low cost and good temperature performance of an optical lens in the prior art are difficult to consider at the same time is solved.

The invention provides a 40-time infinite conjugate microscope objective, and relates to the field of objective lenses. The 40-time infinite conjugate microscope objective comprises a first lens group, a second lens group and a third lens group which are sequentially arranged along an optical axis from an object space to an image space. The first lens group comprises a first lens and a second lens which are sequentially arranged from the object side to the image side in the optical axis direction. The second lens group comprises a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens which are sequentially arranged from the object space to the image space in the optical axis direction. The third lens group comprises a tenth lens and an eleventh lens which are sequentially arranged from the object space to the image space in the optical axis direction. The 40-time infinite conjugate microscope objective can realize a high-resolution flat image plane and apochromatic objective, under a short parfocal distance, the numerical aperture is larger, the illumination at the image plane is increased, the imaging is clearer, the on-axis field of view and the off-axis field of view are close to diffraction limits, and the point array radius is close to be within the Airy spot.

The invention discloses an optical lens, a camera module and terminal equipment, the optical lens comprises six lenses with refractive power, the first lens has positive refractive power, and the object side surface and the image side surface of the first lens are respectively a convex surface and a concave surface; the second lens has negative refractive power, and the object side surface and the image side surface of the second lens are concave surfaces; the object side surface and the image side surface of the third lens are respectively a concave surface and a convex surface; the fourth lens has positive refractive power, and the object side surface and the image side surface of the fourth lens are convex surfaces; the fifth lens has positive refractive power, and the object side surface of the fifth lens is a convex surface; the sixth lens has negative refractive power, and the object side surface and the image side surface of the sixth lens are concave surfaces; the optical lens satisfies the following relational expressions: 15 default; hFOVlt, HFOVt; 20deg, FNOlt, 20deg, FNOlt; 2.1. According to the optical lens, the camera module and the terminal equipment, the miniaturization design requirement can be met, and meanwhile the optical lens has the good imaging quality.

The invention relates to an industrial lens which sequentially comprises a first lens group with positive focal power, a second lens group with negative focal power and a third lens group with positive focal power along an optical axis from an object side to an image side, the first lens group and the third lens group are fixed lens groups, and the second lens group is a focusing group; the first lens group comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power and a fifth lens with positive focal power; the second lens group comprises a sixth lens with positive focal power and a seventh lens with negative focal power; the third lens group comprises an eighth lens and a ninth lens which are opposite in focal power, a tenth lens with positive focal power and an eleventh lens with negative focal power. The industrial lens has at least one of the characteristics of low distortion, high illumination, high resolution, wide focusing object distance range, no virtual focus in the temperature range of-40 DEG C to + 80 DEG C and the like.

The invention discloses an optical lens, a camera module and a terminal device, the optical lens comprises seven lenses, the first lens has negative refractive power, and the object side surface and the image side surface of the first lens are a convex surface and a concave surface near an optical axis respectively; the second lens element with negative refractive power has a concave object-side surface and a convex image-side surface in paraxial regions, respectively. The third lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. The fourth lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region thereof. The fifth lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. The sixth lens element with negative refractive power has an object-side surface and an image-side surface being concave in a paraxial region. The seventh lens element with positive refractive power has a convex object-side surface and a concave image-side surface in paraxial regions, respectively. The optical lens satisfies the following relational expressions: FOV is greater than or equal to 130 degrees and less than or equal to 160 degrees, and R6 / F3 is greater than or equal to-7.5 and less than or equal to-3.0.

The invention discloses an optical lens, a camera module and a terminal device, the optical lens comprises seven lenses, the first lens has negative refractive power, and the object side surface and the image side surface of the first lens are a convex surface and a concave surface near an optical axis respectively; the second lens element with negative refractive power has a concave object-side surface and a convex image-side surface in a paraxial region, respectively. The third lens element with positive refractive power has a convex object-side surface and a concave image-side surface in paraxial regions, respectively. The fourth lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region thereof. The fifth lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. The sixth lens element with negative refractive power has an object-side surface and an image-side surface being concave in a paraxial region. The seventh lens element with positive refractive power has a convex object-side surface and a concave image-side surface in paraxial regions, respectively. The optical lens satisfies the following relational expressions: 130 DEG < = FOV < = 150 DEG and 1.65 DEG < = FNO < = 1.75.

The invention belongs to the technical field of underground coal mine image enhancement, and particularly discloses an underground coal mine image enhancement method and system, computer equipment and a storage medium. The method comprises the following steps: firstly, establishing a glow imaging degradation model to obtain a glow image, and removing glow by adopting a layer separation method to obtain a glow-removed image; secondly, on the basis of a low-illumination enhancement SRLLIE method, an objective function of the low-illumination enhancement SRLLIE method is improved according to the glow-removed image, iterative solution is carried out on the improved objective function, and an illumination image which suppresses overexposure and retains structural details and a denoised reflection image are obtained; adjusting the brightness of the illuminance diagram by using an S-type gamma correction function to obtain an optimized illuminance diagram; and finally, according to a Retinex theory, carrying out point multiplication on the optimized illumination diagram and the reflection diagram to obtain an enhanced image. According to the method, the brightness of the image can be effectively improved, excessive enhancement is inhibited, the detail information of the image can be recovered, and the visual effect of the image is improved.

The present invention provides a light source device and a projection device. A light source device has a simple structure and does not generate gaps between phosphors. In addition, a projection display device capable of obtaining higher illumination can be provided. A fluorescent wheel having an incident surface on which the emitted light of a semiconductor light source is incident has a first segment area and a second segment area adjacent to each other arranged in a circumferential direction on a reflective substrate, and a segment forming layer corresponding to each segment area is applied. The lower layer of the second segment area is the phosphor layer of the first segment area, and the upper layer is a phosphor layer or a diffusion layer of a specified size. Thus, gaps are prevented from being generated between the segment areas, thereby preventing the reflective substrate from being exposed.

The present invention provides a low-glare value photobiological safety eye protection lamp, comprising an iron shell, a head assembly is provided at the end of the iron shell, two light source boards are provided at the inner top of the iron shell, backlight boards are provided on both sides of the light source board, the backlight boards are located in the middle of both sides of the iron shell, an anti-glare lampshade is provided on the surface of the iron shell, an anti-glare grille plate is provided on the surface of the anti-glare lampshade, and a frame is slidably connected to the outer side of the iron shell. Beneficial effect: the present invention solves the problem that the existing classroom lamps have low illumination and poor uniformity in the classroom space, which is convenient for teenagers and teachers to study and work in this environment for a long time, and the striped anti-glare lampshade made of PPS material is added, which solves the problem of illumination loss and too small beam angle caused by the current common use of acrylic frosted boards, and can effectively avoid the formation of strong light and dark intervals indoors while reducing glare.

The present application belongs to the technical field of image enhancement in coal mine, and specifically discloses a coal mine image enhancement method, system, computer device and storage medium. Firstly, a glow imaging degradation model is established to obtain a glow image, and a layer separation method is used to remove the glow to obtain a de-glow image; then, on the basis of a low-illumination enhancement SRLLIE method, a target function of the low-illumination enhancement SRLLIE method is improved according to the de-glow image, the improved target function is iteratively solved, an illumination graph with suppressed overexposure and retained structural details and a de-noised reflection graph are obtained; then, the brightness of the illumination graph is adjusted by using an S-shaped gamma correction function to obtain an optimized illumination graph; finally, the optimized illumination graph and the reflection graph are point multiplied according to the Retinex theory to obtain an enhanced image. The present application can not only effectively improve the brightness of the image and suppress over-enhancement, but also restore the image detail information and improve the visual effect of the image.

The invention discloses a large-target-surface industrial lens and an industrial lens module, and belongs to the technical field of optical imaging, and the large-target-surface industrial lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis, the second lens has positive focal power; the third lens has positive focal power; the fourth lens has negative focal power; the fifth lens has positive focal power; the sixth lens has negative focal power; the large-target-surface industrial lens satisfies the following conditional expressions: ImgH / (SAG11-SAG12) is greater than or equal to-12.001 and less than or equal to-5.309; tTL / EPD is greater than or equal to 3.934 and less than or equal to 5.367. According to the combined configuration of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens, the illumination of the large-target-surface industrial lens is better improved, so that the large-aperture and large-target-surface requirements of the large-target-surface industrial lens are favorably realized, and the imaging quality of the large-target-surface industrial lens is also favorably improved.

The present application discloses an optical lens and an electronic device. The optical lens comprises a first lens with negative optical power, a second lens with optical power, a third lens with positive optical power, a fourth lens with optical power, a fifth lens with optical power and a sixth lens with positive optical power; the positive and negative properties of the optical powers of the fourth lens and the fifth lens are opposite; the center thickness d8 of the fourth lens on the optical axis, the center thickness d9 of the fifth lens on the optical axis and the distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy 0.04≤(d8+d9) / TTL≤0.28; the effective focal length F2 of the second lens and the effective focal length F of the optical lens satisfy 2.8≤|F2 / F|; the effective focal length F6 of the sixth lens and the effective focal length F of the optical lens satisfy 1.25≤F6 / F≤3.5; the air interval d34 between the third lens and the fourth lens on the optical axis and the distance TTL from the center of the first side surface of the first lens to the imaging surface of the optical lens on the optical axis satisfy 0.12≤d34 / TTL≤0.32.

The utility model relates to the technical field of lighting equipment, in particular to an ultrathin ceiling lamp which comprises a cover plate, a transparent cover, a base plate assembly, a first light source, a second light source and a third light source. A mounting groove is formed in the cover plate; the transparent cover is fixed to the outer edge of the cover plate in a surrounding mode. The chassis assembly is fixedly connected with the transparent cover through the outer frame; the light emitting direction of the first light source faces the transparent cover; the light emitting direction of the second light source faces the inner side of the mounting groove; the light emitting direction of the third light source faces the inner frame. According to the ultrathin ceiling lamp provided by the utility model, the overall thickness of the ceiling lamp is reduced; the first light source, the second light source and the third light source can be independently controlled, multiple illumination modes are achieved, the second light source forms face type light emitting, and the light source has the advantages of being soft in emitted light, free of hurting eyes and large in illumination. And the first light source and the third light source can realize linear light emitting, and have the advantages of uniform lines and fine light emitting.

This utility model relates to the field of lighting equipment technology, specifically to a surgical room shadowless lamp lighting device, including a shadowless lamp body. The front of the shadowless lamp body is provided with a shadowless lamp light source and a shadowless lamp cover. A first ambient light module and a first ambient light cover are provided at the center of the back of the shadowless lamp body. Multiple second ambient light modules and second ambient light covers are arranged circumferentially along the edges of the shadowless lamp body, with light-shielding elements between adjacent second ambient light modules. This utility model embeds the first and second ambient light modules on non-primary light-emitting surfaces of the shadowless lamp body, such as the back and sides, and provides corresponding diffuser covers, forming a uniform background lighting effect without direct glare, which can meet the diverse lighting needs of different personnel in the operating room.

This utility model discloses a light source module, comprising: a light-emitting unit, which includes four LEDs arranged in two columns along a first direction and in two rows along a second direction perpendicular to the first direction; the four chips in each LED emit different colors; for two adjacent LEDs in the first direction, the two adjacent chips in the first direction emit different colors; for two adjacent LEDs in the second direction, the two adjacent chips in the second direction emit different colors; and a lens, which includes an incident end, with LEDs disposed at the incident end. The light-emitting unit of this utility model can achieve a light-emitting surface with four colors evenly distributed; and the lens concentrates the light emitted by the LEDs into a smaller angle beam, while the light spots formed by the light-emitting units overlap, thereby obtaining a high-brightness light spot with uniform color.

The application discloses a low-illumination image enhancement method, system, device and medium, relates to the field of image processing, and comprises the following steps: performing color space conversion and channel decoupling on a low-illumination RGB image to obtain a luminance component; performing current mapping on the luminance component to obtain a driving current; utilizing the resistance state flipping probability of a magnetic tunnel junction device and the Sigmoid relationship of the applied current, performing nonlinear mapping enhancement on the luminance component based on the driving current to obtain an enhanced luminance component; and performing image reconstruction based on the enhanced luminance component to obtain an enhanced image. The application can realize efficient enhancement of the luminance of a low-illumination image and solve the problems of slow response, high power consumption, color distortion and poor edge adaptability of a traditional scheme.

The invention discloses a laser light source system which comprises a laser light source emitting laser beams, a collecting lens, a wavelength conversion device and a light receiving lens, the collecting lens, the wavelength conversion device and the light receiving lens are sequentially arranged on the path of the laser beams, the collecting lens converges the laser beams to the wavelength conversion device, and the wavelength conversion device converts at least part of the laser beams into excited light. The light receiving mirror collects excited light and unconverted laser, and the wavelength conversion device comprises a substrate and a wavelength conversion layer which are arranged in sequence; the wavelength conversion layer comprises a fluorescent layer and a scattering layer, the scattering layer is located on the side away from the substrate, and the fluorescent layer is formed by packaging first fluorescent powder particles and first white scattering particles through a first packaging body; and the scattering layer is formed by packaging second white scattering particles by a second packaging body or packaging second fluorescent powder particles and the second white scattering particles by the second packaging body. The laser light source system is compact in structure, good in uniformity of emitted light spots and high in illumination.

The invention discloses a vehicle-mounted projection lamp and a vehicle device, and relates to the technical field of vehicle lamps, the vehicle-mounted projection lamp comprises a light source, a condensing lens, an object space pattern light blocking piece and a projection lens, and a hollowed-out area or a non-hollowed-out area in the object space pattern light blocking piece forms an object space pattern; a beam of parallel light is converged by the light emitting surface of the projection lens and then is transmitted by the light incident surface of the projection lens to be focused on a first focus, and the first focus is located on the surface, facing the projection lens, of the object space pattern light barrier; therefore, light emitted by the light source is converged by the condensing lens, then penetrates through the object space pattern light barrier, then penetrates through the light incident surface of the projection lens, is converged to the central area of the light emergent surface of the projection lens, and is finally projected out from the light emergent surface of the projection lens, so that an image space projection pattern is formed, and the projection pattern is high in illumination and high in definition; the projection part is only provided with a layer of projection lens, so that the number of parts is small, the size chain is small, the manufacturing difficulty is low, the cost is low, the loss is small, the efficiency is high and the error controllability is high.

This application proposes a high-intensity tri-proof lamp comprising a lamp body, a heat sink, and a light source plate. The lamp body is co-extruded from a diffusing material and an opaque material, and has a diffuser cover. The inner surface of the diffusing material portion of the diffuser cover forms a serrated light-controlling structure. The light source plate is disposed within the lamp body. The light source plate is disposed within the lamp body, located on the heat sink, and facing the diffuser cover. Through the structural design of the diffusing and opaque materials, the tri-proof lamp achieves excellent light control while still meeting the requirements for waterproofing, dustproofing, and corrosion resistance.

The utility model relates to the technical field of lighting, especially in kind of double polarized distribution optical system and lamps and lanterns of the combination of reflector cup and lens, optical system includes reflector cup, lens, with the light outlet of reflector cup corresponds, the lens has first polarized part and second polarized part, first polarized part is used for polarized light to first side to second polarized part for polarized light to second side opposite to first side. The double polarized distribution optical system of the combination of reflector cup and lens can make the light of the same light source can illuminate two sides simultaneously, need not set up two groups of light source respectively, can satisfy the illumination need of two target areas under the condition of reducing cost and volume, uses the combination of reflector cup and lens to realize bidirectional polarized light, can effectively improve light utilization, improve the illumination of two target areas, satisfy the illumination need under the condition of reducing energy consumption.

The present invention provides a high-resolution and high-illuminance machine vision system and a manufacturing method thereof. In the optical system of the lens, a front lens group A, a stop, a rear lens group B, and a flat protective glass are sequentially arranged along the incident direction of light from left to right. The front lens group A includes a crescent lens A1 with positive focal power, a crescent lens A2 with positive focal power, and a crescent lens A3 with negative focal power, which are sequentially arranged. The rear lens group B includes a biconcave lens B1 with negative focal power, a crescent lens B2 with positive focal power, a biconvex lens B3 with positive focal power, and a crescent lens B4 with positive focal power. The front lens group A of the optical system has negative focal power, and the rear lens group B has positive focal power. The structure is simple, beautiful, high resolution, and extremely high illumination.

The utility model provides a multi-light-path lens with uniform illumination, a light-emitting assembly and a low-position illuminating lamp. The multi-light-path lens comprises a first refracting surface and a second refracting surface which are respectively arranged on two sides of a scattering light source; the arc-shaped light guide cover is arranged at the top of the scattering light source in a covering mode, a first free-form surface is arranged on the inner side of the arc-shaped light guide cover, a second free-form surface is arranged on the outer side of the arc-shaped light guide cover, and scattering light emitted from the scattering light source to the top sequentially penetrates through the first free-form surface and the second free-form surface. One part of scattered light emitted from the scattered light source to the two sides penetrates through the first refracting surface, is deflected and then is emitted out through the second free-form surface, and the other part of the scattered light penetrates through the second refracting surface, is reflected by the fully reflecting surface and then is diffused outwards; the low-position illuminating lamp solves the problem that in the prior art, a low-position illuminating lamp cannot ensure the uniformity of light rays on a road surface while reducing dazzle light generated to a driver.

This application discloses an optical lens, a camera module, and an electronic device that can meet the requirements of miniaturization and high imaging quality, and can stably image under complex lighting conditions. The optical lens has six refractive lenses, which are arranged sequentially from the object side to the image side along the optical axis: the first lens has negative refractive power, and its object side is concave near the optical axis, and its image side is concave near the optical axis; the second lens has positive refractive power, and its object side is convex near the optical axis, and its image side is convex near the optical axis; the third lens has positive refractive power, and its object side is convex near the optical axis; the fourth lens has positive refractive power, and its object side is convex near the optical axis, and its image side is convex near the optical axis; the fifth lens has negative refractive power, and its object side is concave near the optical axis; the sixth lens has negative refractive power, and its image side is concave near the optical axis; the optical lens satisfies the following relationship: 30°≤FOV≤40°, 1≤CT4 / CT5≤1.4.

The invention relates to an imaging lens which sequentially comprises a first lens group with positive focal power, a second lens group with negative focal power and a third lens group with positive focal power from an object side to an image side along an optical axis, the first lens group and the third lens group are fixed lens groups, and the second lens group is a focusing group; the first lens group comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power; the second lens group comprises a fifth lens with positive focal power and a sixth lens with negative focal power; the third lens group comprises a seventh lens, an eighth lens and a ninth lens, wherein the seventh lens and the eighth lens are opposite in focal power, and the ninth lens is positive in focal power. The effective focal length FG2 of the second lens group and the total effective focal length FI of the imaging lens when the object distance is 0.3 m meet the condition that FG2 / FI is larger than or equal to-2.4 and smaller than or equal to-0.3. The imaging lens at least has one of the characteristics of wide object distance, low distortion, high illumination, no virtual focus at high temperature, athermalization and the like.

The invention relates to a small low-distortion all-glass lens and an imaging method. An optical system of the lens is composed of a first lens, a second lens, a diaphragm, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from left to right along a light incident light path. Wherein the fifth lens and the sixth lens form a balsaming lens group. According to the lens, the design of six glass spherical lenses is adopted, the design requirements of miniaturization, low distortion and high illumination are met by optimizing the parameters of all the lenses and the distance on the axis, meanwhile, the small-aperture design is adopted, the field depth range is enlarged, the athermalization design is achieved through combination with the selection freedom degree of all-glass materials, and the lens is more compact in structure and more compact in structure. And the environmental reliability of the lens is greatly improved.

This invention discloses a double-sided light guide plate and its processing method, as well as a backlight module, relating to the field of light guide plate processing technology. The double-sided light guide plate includes a light guide plate body, which includes a first surface and a second surface disposed opposite to each other. The light guide plate body also includes a light-incoming surface and a light-guiding side surface disposed between the first surface and the second surface. Both the first surface and the second surface include a positioning surface and a light-guiding surface disposed sequentially away from the light-incoming surface. Positioning grooves are formed on both the first positioning surface and the second positioning surface. The positioning grooves extend along a first direction parallel to the light-incoming surface, and at least part of the positioning grooves are arc grooves with intersecting engraved lines. A reflective coating is provided on the light-guiding side surface between the first light-guiding surface and the second light-guiding surface. By adopting a partitioned arrangement of the positioning surface and the light-guiding surface, light with a large scattering angle is refracted outward in the positioning surface. Combined with the reflective coating, the technical effects of light spot suppression and improved uniformity are achieved.

The invention relates to an ultra-wide-angle lens which is arranged along an optical axis from an object side to an image side. The invention relates to a multi-lens zoom lens, which sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens, a sixth lens with positive focal power, a seventh lens with positive focal power, an eighth lens with negative focal power and a ninth lens with positive focal power, the optical total length TTL, the total focal length f and the image height H under the maximum field angle of the ultra-wide-angle lens meet the following relation: TTL * f / H is more than or equal to 6.9 and less than or equal to 7.4. The ultra-wide-angle lens at least has one of the characteristics that the FOV is larger than or equal to 196 degrees, the total optical length is long, the thermal stability is good, the resolution ratio is high, a large aperture (FNO is smaller than or equal to 1.8) can be achieved, and the illumination is high.

The invention provides an optical lens, which sequentially comprises a first lens with negative focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a convex surface; wherein the curvature radius R5 of the object side surface of the third lens and the curvature radius R11 of the object side surface of the sixth lens meet the following formula:-0.7 lt; (R5-R11) / (R5 + R11) lt; and-0.2%. The optical lens provided by the invention has the advantage of excellent imaging quality through specific surface shape arrangement and reasonable focal power distribution.

This invention relates to the field of portable lighting fixtures, and more particularly to a portable LED lighting fixture, comprising a base. A rotating ring assembly, composed of multiple concentric rings, is installed in the center of the base. These concentric rings are rotatably connected by rotating rods. The rotating rods on the inner and outer sides of the concentric rings are vertically distributed. A base column is rotatably connected to the center of the innermost concentric ring via a rotating rod. A counterweight is fixedly connected to the bottom of the base column, and the counterweight is located in the lower part of the base. An electric push rod is installed in the upper part of the base column, and a fixing frame is fixedly connected to the top of the electric push rod. A fixing seat is fixedly connected to the bottom of the fixing frame, and a guide strip is fixedly connected to the center of the bottom end of the fixing seat. This invention allows for free control of the number of illuminated light panels and the actual luminous area according to ambient brightness and lighting requirements. It can achieve both concentrated high-brightness lighting in a small area and full-area illumination by activating all light panels, distributing light power as needed.

This invention discloses a focusing module and a laser optical system. The focusing module is used to gather and / or focus excitation light to a wavelength conversion device. The excitation light has a beam quality product in the x-axis direction that is greater than the beam quality product in the y-axis direction. The focusing module includes a module support, a focusing support, and a focusing lens group. The focusing lens group includes a first lens with negative refractive power, a second lens with positive refractive power, and a third lens with positive refractive power, arranged sequentially. The module support has a first mounting cavity in which the first lens is disposed. The focusing support has a second mounting cavity in which the third lens is disposed. The focusing module can efficiently shape and focus asymmetrical excitation light, has a simple and compact structure, and exhibits excellent focusing effect.