Projection imaging lamp with local electrochromic glass

Abstract

The utility model relates to the technical field of illumination imaging, and aims to provide an innovative lamp which combines locally controllable electrochromic glass with a dynamic projection imaging technology, the innovative lamp comprises a glass body, a plurality of electrochromic units, a driving module and an optical system, the plurality of electrochromic units are mounted on the glass body, and the driving module is mounted on the glass body. The electrochromism unit is arranged on the glass body and used for changing color under the action of an external electric field to form a developing area, and the driving module comprises a pulse width modulation circuit based on an FPGA and used for applying voltage to the electrochromism unit to enable the electrochromism unit to change color. The electrochromic glass changes color under the action of an external electric field to form a blue-gray developing area and become a projection curtain, and when projection is not needed, the electrochromic unit on the glass body recovers to a transparent state, and the light transmittance of the electrochromic unit is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting imaging technical field, more specifically, it relates to partial electrochromic glass's projectable imaging lamp. BACKGROUND

[0002] In architectural decoration, stage lighting, vehicle HUD and interactive display scene, the application of projection equipment is more and more extensive, but the existing projection equipment has some defects, which limits its further development in these fields.

[0003] Traditional projection lamps need to rely on external curtain, which limits its use flexibility in some scenes. Moreover, the environmental light has great interference on the projection effect, resulting in low imaging contrast and affecting the viewing experience. For example, in a bright indoor environment, the picture projected by the traditional projector may appear blurred and not bright enough.

[0004] Although static dimming glass can adjust the light transmittance to a certain extent, the overall color change cannot realize local image generation, and the function is relatively single. In the scene where complex images or information need to be displayed, it cannot meet the diversified needs.

[0005] Although transparent display technology, such as OLED transparent screen, has certain transparency and display effect, it is high in cost, high in energy consumption and limited in light transmittance. This makes it face the problems of economy and practicability in large-scale application and long-term use.

[0006] In summary, the existing projection equipment has its own limitations in different application scenarios, and a new type of projection equipment is needed to overcome these technical problems to meet the market demand for high-performance, multifunctional and low-cost projection equipment. UTILITY MODEL CONTENT

[0007] In view of the problems in the prior art, the utility model provides a projectable imaging lamp of partial electrochromic glass to solve the technical problems mentioned in the background art.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: the projectable imaging lamp of partial electrochromic glass, including glass body, a plurality of electrochromic units, drive module and optical system, wherein,

[0009] A plurality of electrochromic units are installed on the glass body and are used to change color under the action of an applied electric field to form a developing area,

[0010] The drive module includes a pulse width modulation circuit based on FPGA, which is used to apply voltage to the electrochromic unit to change color,

[0011] The optical system comprises a short-focus laser projector group and a composite filter, wherein the short-focus laser projector group is used for projecting a picture and projecting the picture at a developing area formed by the electrochromic unit, and the composite filter is used for separating the laser projected by the short-focus laser projector group into different light paths according to wavelengths.

[0012] The utility model further sets up, the electrochromic unit is installed on the glass body in matrix, and the electrochromic unit is electrically connected through the wire between a plurality of.

[0013] The utility model further sets up, the wire between a plurality of electrochromic units is snake shape wiring layout, to reduce the wire shading rate.

[0014] The utility model further sets up, the electrochromic unit includes the outer layer transparent conductive layer, electrochromic layer, solid electrolyte layer, ion storage layer and inner layer transparent conductive layer that are sequentially set from top to bottom, wherein,

[0015] The outer layer transparent conductive layer and inner layer transparent conductive layer are connected with the positive pole and negative pole of power supply respectively,

[0016] The electrochromic layer is used for changing its optical property by the oxidation-reduction reaction of ion intercalation or extraction, and forming blue-gray developing area,

[0017] The solid electrolyte layer is used for providing ion transmission channel and isolating electron conduction to prevent short circuit,

[0018] The ion storage layer is used for storing reverse ion, balancing charge and enhancing cycle stability.

[0019] The utility model further sets up, the local electrochromic glass's projectable imaging lamp still includes control module, and control module includes image recognition processing chip and internet of things communication module, wherein,

[0020] The image recognition processing chip adopts DLP470TP chip, DLP660TE chip, MT9679 chip or Hi3751V811 chip etc.,

[0021] The internet of things communication module adopts ESP32 module, Quectel BG96 module or Semtech LoRa module etc.

[0022] The utility model further sets up, the pulse width modulation circuit based on FPGA includes counter module, duty ratio setting module, comparator module, clock frequency division module and external drive circuit, wherein,

[0023] The counter module is used for generating periodic increment / decrement count value, and decides the period of PWM (pulse width modulation circuit) signal,

[0024] The duty cycle setting module is used for storing the duty cycle value set by the user,

[0025] The comparator module is used for comparing the current value of the counter with the duty cycle setting value, and outputting high / low level,

[0026] The clock frequency division module is used for dividing the frequency of the main clock of the FPGA, and adapting to different PWM frequency requirements,

[0027] The external drive circuit is used for enhancing the driving capability of the FPGA output signal.

[0028] Compared with the prior art, the utility model provides local electrochromic glass's projectable imaging lamp, has the following beneficial effects:

[0029] 1, this application adopts the glass body that installs electrochromic unit as dynamic projection curtain, when projecting, electrochromic glass produces discoloration under the action of applied electric field, forms blue ash development area, becomes projection curtain, when not needing projection, the electrochromic unit on the glass body restores to transparent state, does not influence its light transmittance.

[0030] 2, this application adopts short focus laser projector set and electrochromic unit combination to form projection imaging assembly, maintains projection high definition simultaneously, and economic cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is structural schematic diagram of glass body and a plurality of electrochromic units;

[0032] Figure 2 It is the explosion structural schematic diagram of electrochromic unit;

[0033] Figure 3 It is the installation structure schematic diagram of optical system;

[0034] Figure 4 It is the installation structure schematic diagram of drive module and control module;

[0035] Figure 5 It is the frame flow chart of pulse width modulation circuit based on FPGA.

[0036] In the figure: 1, glass body;2, electrochromic unit;201, outer transparent conductive layer;202, electrochromic layer;203, solid-state electrolyte layer;204, ion storage layer;205, inner transparent conductive layer;3, drive module;4, optical system;401, short focus laser projector set;402, composite filter;5, control module;501, image recognition processing chip;502, internet of things communication module. DETAILED DESCRIPTION

[0037] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0039] The projection imaging lamp of the local electrochromic glass comprises a glass body 1, a plurality of electrochromic units 2, a driving module 3 and an optical system 4, wherein the plurality of electrochromic units 2 are installed on the glass body 1 and are used to change color under the action of an applied electric field to form a developed area, the driving module 3 comprises a pulse width modulation circuit based on FPGA and is used to apply a voltage to the electrochromic units 2 to make them change color, and the optical system 4 comprises a short-focus laser projector group 401 and a composite filter 402, wherein the short-focus laser projector group 401 is used to project a picture and project it at the developed area formed by the electrochromic units 2, and the composite filter 402 is used to separate the laser projected by the short-focus laser projector group 401 into different light paths according to wavelengths, the plurality of electrochromic units 2 are installed on the glass body 1 in a matrix manner, and the electrochromic units 2 are electrically connected through wires, and the wires between the electrochromic units 2 are arranged in a snakelike layout to reduce the light blocking rate of the wires.

[0040] In specific applications, the plurality of electrochromic units 2 are fixed on the glass body 1 in a matrix manner, and the electrochromic units 2 are connected in sequence through the wires arranged in a snakelike layout, the electrochromic layer 202 in the electrochromic unit 2 changes color after being electrified, so that the electrochromic unit 2 shows a blue-gray developed area, the developed area is used as a dynamic projection screen, the short-focus laser projector group 401 and the composite filter 402 are installed in an external lamp, and the short-focus laser projector group 401 projects a picture on the dynamic projection screen to form a projection picture.

[0041] In the embodiment, the electrochromic unit 2 comprises, from top to bottom, an outer transparent conductive layer 201, an electrochromic layer 202, a solid-state electrolyte layer 203, an ion storage layer 204 and an inner transparent conductive layer 205, wherein the outer transparent conductive layer 201 and the inner transparent conductive layer 205 are connected with the positive and negative poles of a power supply respectively, the electrochromic layer 202 is used to change its optical properties by undergoing an oxidation-reduction reaction through ion insertion or extraction to form a blue-gray developed area, the solid-state electrolyte layer 203 is used to provide an ion transmission channel and isolate electronic conduction to prevent short circuit, and the ion storage layer 204 is used to store reverse ions, balance charges and enhance cycle stability.

[0042] In the embodiment, the local electrochromic glass projectable imaging lamp further comprises a control module 5, the control module 5 comprises an image recognition processing chip 501 and an Internet of Things communication module 502, wherein the image recognition processing chip 501 adopts a DLP470TP chip, a DLP660TE chip, an MT9679 chip or a Hi3751V811 chip, etc., the Internet of Things communication module 502 adopts an ESP32 module, a Quectel BG96 module or a Semtech LoRa module, etc., the pulse width modulation circuit based on FPGA comprises a counter module, a duty cycle setting module, a comparator module, a clock frequency division module and an external driving circuit, wherein the counter module is used to generate a periodic increment / decrement count value, to determine the period of the PWM pulse width modulation circuit signal, the duty cycle setting module is used to store the duty cycle value set by the user, the comparator module is used to compare the current value of the counter with the duty cycle setting value, to output a high / low level, the clock frequency division module is used to divide the main clock of the FPGA, to adapt to different PWM frequency requirements, and the external driving circuit is used to enhance the driving capability of the FPGA output signal.

[0043] When applied in a vehicle HUD system, the glass body 1 can be made into the shape of a car windshield, and the curved glass is installed on the windshield, and the short-focus laser projector group 401 projects the picture on the curved glass.

[0044] In all the above-mentioned solutions, although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A projection imaging luminaire using locally electrochromic glass, comprising a glass body (1), characterized in that, it also... include: Several electrochromic units (2) are mounted on the glass body (1) to change color under the action of an external electric field, forming a developing area. The driving module (3) is used to apply voltage to the electrochromic unit (2) to change its color. The optical system (4) includes a short-throw laser projector (401) and a composite filter (402). The short-throw laser projector (401) is used to project an image onto the developing area formed by the electrochromic unit (2). The composite filter (402) is used to separate the laser projected by the short-throw laser projector (401) into different optical paths according to wavelength.

2. The projectable imaging lamp with locally electrochromic glass according to claim 1, characterized in that, The electrochromic units (2) are mounted in a matrix on the glass body (1), and the electrochromic units (2) are electrically connected to each other by wires.

3. The projectable imaging lamp with locally electrochromic glass according to claim 2, characterized in that, The wires between several electrochromic units (2) are arranged in a serpentine pattern.

4. The projection imaging lamp with locally electrochromic glass according to claim 1, characterized in that, The electrochromic unit (2) includes, from top to bottom, an outer transparent conductive layer (201), an electrochromic layer (202), a solid electrolyte layer (203), an ion storage layer (204), and an inner transparent conductive layer (205), wherein, The outer transparent conductive layer (201) and the inner transparent conductive layer (205) are connected to the positive and negative terminals of the power supply, respectively. The electrochromic layer (202) is used to initiate a redox reaction, forming a blue-gray developing region. The solid electrolyte layer (203) is used to provide ion transport channels and isolate electron conduction. The ion storage layer (204) is used to store reverse ions to balance the charge.

5. The projectable imaging lamp with locally electrochromic glass according to claim 1, characterized in that, It also includes a control module (5), which includes an image recognition processing chip (501) and an Internet of Things communication module (502).

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