Lamp

Abstract

The utility model provides a lamp which comprises a support extending in the axial direction, a light source installation position is arranged at the first end of the support, and an optical assembly installation position is arranged at the second end of the support. The light source is assembled at the light source mounting position; the miniature imaging part is assembled at the optical component mounting position and comprises a plurality of micro lenses; the collimation modulation part is assembled at the second end of the support, covers the outer side of the miniature imaging part and comprises a plurality of lens units arranged in an array mode, light rays emitted by the light source form a plurality of shrunk images through the miniature imaging part, and then the shrunk images are collimated through the collimation modulation part and projected into a light spot array. According to the utility model, the light emitted by the light source is processed by utilizing the synergistic effect of the double-lens structures of the miniature imaging piece and the collimation modulation piece, a plurality of shrunk images are formed and collimated, and finally a plurality of fine light spots can be formed on the light receiving surface, so that the uniformity and fineness of illumination are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting technical field especially relates to a lamp. BACKGROUND

[0002] The firefly lamp can create the effect that the firefly dances in the park grassland, the forest and the like, and has good decoration effect.

[0003] At present, the existing firefly projection lamp usually adopts laser light source to realize the effect through collimation reflection. However, the scheme has many disadvantages: great harm to human eyes, potential threat to the eyes of surrounding personnel in actual use scene; complex structure, involving more optical components and complex optical path design, which not only increases the production difficulty, but also improves the production cost; large volume, which is not conducive to installation and arrangement, and has high requirement on installation space; high price, which limits its large-scale popularization and application.

[0004] Therefore, it is necessary to improve the existing lamp to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model discloses a lamp with compact structure, low cost, fine light spot and safety to human eyes.

[0006] In order to realize the above-mentioned purpose, the utility model provides a lamp, which comprises:

[0007] The bracket axially extends, and the first end of the bracket is provided with a light source mounting position, and the second end of the bracket is provided with an optical component mounting position;

[0008] The light source is assembled in the light source mounting position;

[0009] The micro-imaging part is assembled in the optical component mounting position and comprises a plurality of microlenses;

[0010] The collimation modulation part is assembled at the second end of the bracket and covers the outside of the micro-imaging part, and the collimation modulation part comprises a plurality of arrayed lens units;

[0011] The light emitted by the light source forms a plurality of reduced images through the micro-imaging part, and then is collimated and projected into a light spot array through the collimation modulation part.

[0012] Optionally, the bracket is internally provided with:

[0013] The first optical cavity is surrounded by the light source mounting position to the light entrance surface of the micro-imaging part, and the light source and the micro-imaging part are respectively located at two ends of the first optical cavity;

[0014] The second optical cavity is surrounded by the light entrance surface of the micro-imaging part to the collimation modulation part;

[0015] Wherein, the light emitted by the light source is irradiated to the micro-imaging member through the first optical cavity, and a plurality of reduced images are formed in the second optical cavity.

[0016] Optionally, the plurality of microlenses are arranged on the side of the micro-imaging member facing the light source, and the plurality of microlenses are arranged in a spherical array.

[0017] Optionally, the side of the micro-imaging member facing the collimating and modulating member is a spherical surface, and the spherical center of the spherical surface coincides with the light emitting surface of the light source.

[0018] Optionally, the plurality of lens units form a spherical lens array.

[0019] Optionally, the plurality of lens units are randomly and irregularly distributed.

[0020] Optionally, the two side surfaces of the collimating and modulating member are aspherical surfaces.

[0021] Optionally, the ratio of the size of the light source to the size of the light spot is greater than 1:2.

[0022] Optionally, the motion assembly is further configured to drive the support or the collimating and modulating member to rotate.

[0023] Optionally, the micro-imaging member and the collimating and modulating member are both transparent optical plastic members.

[0024] The lamp of the present application has the following beneficial effects: The lamp of the present application utilizes the double-lens structure of the micro-imaging member and the collimating and modulating member to perform synergistic action, processes the light emitted by the light source, forms a plurality of reduced images, and performs collimation, so that a plurality of fine light spots can be formed on the light receiving surface, greatly improving the uniformity and delicacy of the illumination. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of the lamp according to the embodiment of the present application;

[0026] Figure 2 is Figure 1 an exploded view of the lamp shown in FIG. 1;

[0027] Figure 3 is Figure 2 a sectional view of the lamp shown in FIG. 1;

[0028] Figure 4 is Figure 1 a sectional view of the lamp shown in FIG. 1;

[0029] Figure 5 is Figure 1 a sectional view of the lamp shown in FIG. 1 from another angle;

[0030] Figure 6 is Figure 2A schematic diagram of the structure of a miniature imaging device;

[0031] Figure 7 yes Figure 2 Schematic diagram of the collimator modulator;

[0032] Figure 8 It is the optical path diagram from the light source to the miniature imaging device;

[0033] Figure 9 This is the optical path diagram of the collimator modulator.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100 - Lighting fixtures;

[0036] 110-Bracket, 1101-First end, 1111-Light source mounting position, 1102-Second end, 1121-Optical component mounting position, 1103-First optical cavity, 1104-Second optical cavity;

[0037] 120 - Light source;

[0038] 130 - Miniature imaging component; 1301 - Microlens;

[0039] 140 - Collimation modulator, 1401 - Lens unit. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0042] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] like Figures 1-2As shown, the lamp 100 provided by the utility model. The lamp 100 includes the support 110 of axial extension, light source 120, micro imaging piece 130 and collimation modulation piece 140, wherein, the light emitted by light source 120 can form multiple reduced images by micro imaging piece 130, and then collimate and project by collimation modulation piece 140 to form light spot array. That is to say, the lamp 100 of the utility model embodiment utilizes the double lens structure of micro imaging piece 130 and collimation modulation piece 140 to cooperate, processes the light emitted by light source 120, forms multiple reduced images and collimates, and finally forms multiple tiny light spots on the light receiving surface, greatly improves the uniformity and delicacy of illumination.

[0044] The support 110 provides stable support basis for light source 120, micro imaging piece 130 and collimation modulation piece 140, as Figures 2-3 As shown, it has the first end 1101 and the second end 1102 of opposite arrangement. The first end 1101 is equipped with light source installation site 1111, and the second end 1102 is equipped with optical assembly installation site 1121. The support 110 can be made of plastic or metal material. The outer surface of the support 110 is black to reduce the influence of stray light.

[0045] The light source 120 is assembled in the light source installation site 1111. The selection of light source 120 can be adjusted according to the demand of actual application scene, such as laser diode. Preferably, LED lamp bead becomes one of ideal choices because of its high efficiency, long service life and low energy consumption.

[0046] As Figure 3 As shown, the first optical cavity 1103 is arranged in the support 110. The first optical cavity 1103 is surrounded by the light source installation site 1111 to the light entrance surface of micro imaging piece 130. The light source 120 and micro imaging piece 130 are respectively located at both ends of the first optical cavity 1103. The first optical cavity 1103 makes the light emitted by the light source 120 concentrate and stably irradiate on the micro imaging piece 130, reduces the scattering and loss of light in the propagation process, and improves the light utilization efficiency.

[0047] The second optical cavity 1104 is formed between micro imaging piece 130 and collimation modulation piece 140. That is, the second optical cavity 1104 is surrounded by micro imaging piece 130 to the light entrance surface of collimation modulation piece 140. After the light emitted by the light source 120 irradiates to the micro imaging piece 130 through the first optical cavity 1103, multiple reduced images are formed in the second optical cavity 1104. The second optical cavity 1104 provides a specific space environment for the propagation of light and the formation of image. In this space, the reduced image formed by micro imaging piece 130 can be further propagated and adjusted, and finally collimated and projected on the light receiving surface by collimation modulation piece 140.

[0048] The first optical cavity 1103 and the second optical cavity 1104 not only provide a stable mounting base for the components of the lamp 100, but more importantly form a regular light path channel, which can effectively reduce stray light interference (for example, in laser projection applications, it can reduce a large amount of light energy loss).

[0049] The micro-imaging element 130 is assembled at the optical assembly mounting position 1121 and located in the light emitting direction of the light source 120. As shown in Figure 8 , the core function is to receive the light emitted by the light source 120 and form a plurality of reduced images.

[0050] Specifically, as shown in Figures 5-6 , the side of the micro-imaging element 130 facing the light source 120 is provided with a plurality of microlenses 1301, and the plurality of microlenses 1301 are arranged in a spherical array. When the light emitted by the light source 120 shines on these microlenses 1301, a unique optical effect will be produced. Due to the special structure and arrangement of the microlenses 1301, the light can be accurately focused and refracted, thereby forming a plurality of reduced images.

[0051] In addition, as shown in Figure 2 and Figure 8 , the side of the micro-imaging element 130 facing the collimating and modulating element 140 is a spherical surface, and the center of the spherical surface coincides with the light emitting surface of the light source 120. This concentric design ensures that the light enters the second optical cavity 1104 at the best incident angle, further optimizes the refraction path of the light, makes the propagation of the light in the micro-imaging element 130 more accurate and controllable, enhances the focusing effect of the light, and effectively improves the efficiency and quality of the conversion of the light into reduced images.

[0052] The collimating and modulating element 140 is assembled at the second end 1102 of the bracket 110 and covers the outside of the micro-imaging element 130. As shown in Figure 7 and Figure 9 , the collimating and modulating element 140 is a spherical lens array composed of a plurality of lens units 1401, and the plurality of lens units 1401 are randomly distributed. When the collimating and modulating element 140 collimates the plurality of reduced images formed by the micro-imaging element 130, it can produce a special optical effect. Unlike a regularly arranged lens array, the randomly distributed lens units 1401 can refract and adjust the light from multiple angles, which helps to avoid light interference and unevenness caused by regular arrangement, such as overlapping of light spots, and can achieve clear images in projection display, effectively enhancing the lighting effect.

[0053] As shown in Figure 7As shown, both sides of the collimating modulating piece 140 are aspherical surfaces. Compared with the traditional spherical surface design, the aspherical surface design can better correct aberration, further improving the accuracy of light collimation and the quality of the light spot. After the collimation of the collimating modulating piece 140, the light finally forms a plurality of small light spots on the light receiving surface, greatly improving the uniformity and delicacy of the light. In practical applications, such as stage lighting design, these small light spots can create unique light and shadow effects, adding rich visual elements to stage performances.

[0054] In this embodiment, the microimaging piece 130 and the collimating modulating piece 140 are both transparent optical plastic pieces, such as optical-grade PMMA or PC materials. Optical plastics have the advantages of light weight, low cost, and convenient processing and molding. Compared with traditional optical glass, the optical plastic piece can ensure good optical performance while reducing the overall weight of the lamp 100, facilitating installation and use, and also reducing production costs, making the lamp 100 more competitive in the market. For example, in some portable lighting devices, the lamp 100 using optical plastic pieces is more portable and relatively affordable, better meeting the needs of consumers.

[0055] In this embodiment, the ratio of the size of the light source 120 to the size of the light spot is greater than 1:2. This means that the lamp 100 can effectively focus and reduce the light emitted by the light source 120 to form a light spot that is much smaller than the light source 120. This feature is of great significance in scenarios that require precise lighting, such as jewelry display lighting, where small and bright light spots can highlight the details and luster of the jewelry, enhancing the display effect.

[0056] The lamp 100 also includes a motion assembly (not shown) for driving the rotation of the support 110 or the collimating modulating piece 140. In one embodiment, the motion assembly includes a driving force source and a reducer, which can use a small DC motor or a stepper motor as the driving force source, and is connected to the support 110 or the collimating modulating piece 140 through a reducer (such as a gear reducer, a belt reducer, etc.) to achieve smooth and controllable rotation. In another embodiment, a permanent magnet can be installed on the support 110 or the collimating modulating piece 140, and the rotation of the permanent magnet can be driven by an external rotating magnetic field. In another embodiment, a manual knob or handle can be designed to be directly connected to the support 110 or the collimating modulating piece 140, and the rotation of the manual knob or handle can drive the rotation of the support 110 or the collimating modulating piece 140. The arrangement of the motion assembly greatly increases the flexibility and functionality of the lamp 100. For example, in a stage follow-spot lamp, the rotation of the support 110 or the collimating modulating piece 140 driven by the motion assembly can achieve multi-angle illumination and tracking of the light, meeting the diverse needs for light direction and angle in different scenarios. For example, in a firefly lamp, the visual effect of simulating the flight of fireflies can be achieved.

[0057] The following is a specific embodiment of the present application:

[0058] In this embodiment, a small size LED of 1313 package is selected as the light source 120, and the support 110 is made of black plastic, and the support 110 is internally provided with a first optical cavity 1103. The micro-imaging element 130 and the collimating modulation element 140 are made of PMMA, and the microlenses 1301 on the micro-imaging element 130 are arranged in a spherical array, and the collimating modulation element 140 is composed of a spherical lens array of a plurality of randomly scattered lens units 1401. The overall lamp 100 has a size of about 4cm x 8cm.

[0059] The center thickness of the micro-imaging element 130 is 1mm, the spherical radius of the outer spherical surface is 21mm, the curvature radius of the microlens 1301 is 1.037mm, and the focal length of each microlens 1301 is 2.0mm. When the distance from the LED light emitting surface to the microlens 1301 is 20mm, a reduced image of the LED can be formed at a position 1.5mm away from the outer spherical surface, and the reduction ratio is 0.11. When the 1313 LED is used, the size of the image formed is about 0.14mm x 0.14mm.

[0060] The center thickness of the lens unit 1401 of the collimating modulation element 140 is 5mm, and the surface parameter satisfies the aspherical equation:

[0061]

[0062] Wherein c=1 / R, R is the curvature radius of the lens surface, r is the aperture radius of the lens, k is the quadratic surface coefficient of the lens surface, A and B are the 4th order and 6th order aspherical coefficients of the lens surface respectively.

[0063] The surface parameters are as follows:

[0064] Parameters S1 S2 R 13.91 9.87 k 2.82 -8.45 A -0.0001 0.0006

[0065] Wherein S1 is the side of the collimating modulation element 140 facing the outside, and S2 is the side of the collimating modulation element 140 facing the micro-imaging element 130. Therefore, the focal length of the lens unit 1401 is 12.6mm, the back focal length is 11mm, and when the intermediate image formed by the light source 120 is 11mm away from the lens unit 1401 of the collimating modulation element 140, the collimation of the small light spot can be realized.

[0066] According to the formula for calculating the image height of paraxial optics:

[0067]

[0068] Wherein θ is the field of view angle, which corresponds to the exit angle of a single light spot here, h is the image height, which corresponds to the size of the intermediate image point 0.14mm*0.14mm here, and f is the focal length of the collimating modulation member 140, which corresponds to the focal length of the collimating modulation member 140 of 12.6mm here.

[0069] When the light source 120 uses 1313 LEDs, the exit angle of a single light spot is 0.6°, and the size of a single light spot at a distance of 10 meters is 10mm, which can present relatively fine light spots.

[0070] It should be understood that after the power supply of the lamp 100 is turned on, if it is found that the size and density of the light spot do not meet the expectations, or the overall visual effect after cooperation with the motion assembly is not realistic, the installation positions of the light source 120, the micro-imaging member 130 and the collimating modulation member 140 can be checked to see whether the parameters of the micro-imaging member 130 and the collimating modulation member 140 meet the design requirements, and timely adjustment and optimization can be performed.

[0071] In summary, in the lamp 100 of the embodiment of the present application, the light emitted by the light source 120 first enters the first optical cavity 1103 and irradiates the micro-imaging member 130. The plurality of microlenses 1301 of the micro-imaging member 130 refract and focus the light, forming a plurality of reduced images, which are located in the second optical cavity 1104 between the micro-imaging member 130 and the collimating modulation member 140. The spherical lens array of the collimating modulation member 140 collimates the plurality of reduced images and projects them onto the light receiving surface. Since the lens units 1401 of the collimating modulation member 140 are randomly distributed, the distribution of the light spots on the light receiving surface also presents a disordered effect, which can simulate the visual effect of the flight of fireflies.

[0072] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A lamp, characterized in that, include: An axially extending bracket (110) has a light source mounting position (1111) at its first end (1101) and an optical component mounting position (1121) at its second end (1102). A light source (120) is mounted on the light source mounting position (1111); A miniature imaging element (130), mounted on the optical component mounting position (1121), includes a plurality of microlenses (1301); The collimation modulator (140) is mounted on the second end (1102) of the bracket (110) and covers the outside of the miniature imaging element (130), and includes a plurality of lens units (1401) arranged in an array; The light emitted by the light source (120) is processed by the miniature imaging device (130) to form multiple reduced images, which are then collimated and projected by the collimating modulation device (140) to form a light spot array.

2. The lamp according to claim 1, characterized in that, The bracket (110) has the following features inside: The first optical cavity (1103) is formed by the light source mounting position (1111) to the light incident surface of the miniature imaging element (130), and the light source (120) and the miniature imaging element (130) are located at opposite ends of the first optical cavity (1103); The second optical cavity (1104) is formed by the light-incident surfaces of the miniature imaging element (130) and the collimating modulation element (140); The light emitted by the light source (120) is irradiated by the first optical cavity (1103) onto the miniature imaging device (130), forming multiple reduced images in the second optical cavity (1104).

3. The lamp according to claim 1, characterized in that, Multiple microlenses (1301) are disposed on the side of the miniature imaging element (130) facing the light source (120), and the multiple microlenses (1301) are arranged in a spherical array.

4. The lamp according to claim 3, characterized in that, The side of the miniature imaging element (130) facing the collimation modulation element (140) is a spherical surface, and the center of the sphere coincides with the light-emitting surface of the light source (120).

5. The lamp according to claim 1, characterized in that, The multiple lens units (1401) form a spherical lens array.

6. The lamp according to claim 5, characterized in that, The multiple lens units (1401) are randomly and scattered.

7. The lamp according to claim 5, characterized in that, Both sides of the collimation modulator (140) are aspherical.

8. The lamp according to claim 1, characterized in that, The ratio of the size of the light source (120) to the size of the light spot is greater than 1:

2.

9. The lamp according to claim 1, characterized in that, It also includes a motion component for driving the support (110) or the collimator (140) to rotate.

10. The lamp according to claim 1, characterized in that, Both the miniature imaging element (130) and the collimation modulation element (140) are transparent optical plastic parts.

Images