CN107121880B

CN107121880B - Dynamic image projection system

Info

Publication number: CN107121880B
Application number: CN201710536069.XA
Authority: CN
Inventors: 陈磊; 丁志宇; 姜勤安
Original assignee: Ningbo Micro Array Optical Technology Co ltd
Current assignee: Shenzhen Vithin Technology Co ltd
Priority date: 2017-07-04
Filing date: 2017-07-04
Publication date: 2022-10-18
Anticipated expiration: 2037-07-04
Also published as: CN107121880A

Abstract

The invention discloses a dynamic image projection system, comprising: a light source; the light-gathering convex lens is arranged adjacent to the light source and used for gathering the light source and then emitting first emergent light; the compiling baffle is used for receiving the first emergent light emitted by the condensing convex lens and changing the first emergent light into second emergent light after the first emergent light penetrates through the compiling baffle; the micro lens array assembly receives the second emergent light and emits third emergent light after the second emergent light passes through the micro lens array assembly; a screen for receiving the third emergent light and forming an image; the compiling baffle comprises a plurality of unit baffles arranged in an array, and a dynamic image is formed on the screen by adjusting the light transmission and the shielding of each unit baffle. The invention adopts the compiling baffle plate to control the light transmission and shading of each unit baffle plate in real time, and can realize dynamic adjustment on the whole screen image, so that the single display effect of the image can be overcome.

Description

Dynamic image projection system

Technical Field

The invention relates to the field of illumination display, in particular to a dynamic image projection system.

Background

The greeting lamp is a projection system which firstly irradiates a film with an LED light source and then presents an image on the film on an irradiated object through refraction of a lens. The light is initially mounted at the bottom of the door, and when the door is opened, a courtesy light located at the bottom of the door automatically lights up to illuminate the area beside the door. The design makes the driver get on or off the vehicle more conveniently under the condition of insufficient light. The product can also be used for vehicles such as electric motorcycles and the like, can achieve the warning effect of safe distance, and improves the safety. In addition, in public places such as many shop shops, the name of a shop, LOGO or a special pattern is projected on the ground by applying the technology so as to achieve the purpose of publicity. The products in the market can only project a certain fixed pattern, the effect is slightly monotonous, and particularly when the static pattern is arranged on a vehicle to play a role in warning the safety distance, the static pattern is not easy to attract the attention of people.

Disclosure of Invention

The invention provides a dynamic image projection system aiming at the problems of projection of a certain fixed pattern and slightly monotonous effect in the prior art.

The specific technical scheme of the invention is as follows: a dynamic image projection system comprising:

a light source;

the light-gathering convex lens is arranged adjacent to the light source and emits first emergent light after gathering the light source;

the compiling baffle is used for receiving the first emergent light emitted by the condensing convex lens and changing the first emergent light into second emergent light after the first emergent light penetrates through the compiling baffle;

the micro lens array assembly receives the second emergent light and emits third emergent light after the second emergent light passes through the micro lens array assembly;

the screen receives the third emergent light and forms an image;

the compiling baffle comprises a plurality of unit baffles arranged in an array, and a dynamic image is formed on the screen by adjusting the light transmission and the shielding of each unit baffle.

Preferably, the microlens array assembly optically includes: the micro-lens array comprises a first micro-lens array, a pattern panel and a second micro-lens array, wherein micro-lenses on the two micro-lens arrays are in one-to-one correspondence, and patterns on the pattern panel are also in one-to-one correspondence with the two micro-lens arrays.

Preferably, the unit baffles on the compiling baffle correspond to the micro lenses on the two micro lens arrays one by one.

Furthermore, each unit baffle is formed by a fan blade of a driving motor control switch.

Furthermore, each unit baffle is a liquid crystal panel controlled by a driving circuit, and the driving circuit outputs a control signal to control the light transmission and light shielding of the liquid crystal panel.

Furthermore, each unit baffle is formed by covering a transparent glass with a dimming film controlled by a driving circuit, and the driving circuit outputs a control signal to control the light transmission and light shading of the dimming film.

Preferably, the light source is an LED light source.

The invention adopts the compiling baffle plate to control the light transmission and shading of each unit baffle plate in real time, and can realize dynamic adjustment on the whole screen image, so that the single display effect of the image can be overcome.

Drawings

FIG. 1 is a schematic view of an optical projection according to the present invention;

FIG. 2 is a schematic view of a compilable baffle layout of the present invention;

FIG. 3 is a schematic structural view of embodiment 1 of the unit baffle of the present invention;

FIG. 4 is a schematic structural view of embodiment 2 of the unit baffle of the present invention;

fig. 5 is a schematic structural view of the unit baffle of embodiment 3 of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

Referring to fig. 1 to 2, the present invention provides a dynamic image projection system including: the device comprises a light source 1, a condensing convex lens 2, a compiling baffle 3, a micro-lens array component 4 and a screen 5. Wherein, the micro lens array module 4 includes in terms of the light path: the first microlens array 41, the pattern panel 42, and the second microlens array 43, the microlenses on the two

microlens arrays

41, 43 correspond to each other one by one, and the pattern on the pattern panel 42 also corresponds to the two

microlens arrays

41, 43 one by one.

With continued reference to fig. 1 and fig. 2, the interpretable barrier 3 includes a plurality of unit barriers 31 arranged in an array, and a dynamic image is formed on the screen by adjusting the light transmittance and the light shielding of each unit barrier 31. Specifically, light emitted by the LED light source 1 passes through the condensing convex lens 2 to obtain parallel light (first emergent light), passes through the translatable baffle 3 to reach the first microlens array 41 (second emergent light), passes through the pattern panel 42, and finally passes through the second microlens array 43 to be projected onto the screen 5 (third emergent light). The interpretable baffle 3 is a baffle array composed of a series of unit baffles 31, each unit baffle 31 has two functions of realizing transmission and shielding of incident light, each unit baffle 31 can independently operate, and sequential switching among patterns on the pattern panel 42 can be realized through switching control over each unit baffle 31 on the interpretable baffle 3 (see fig. 2, white represents transmission, and black represents shading), so that dynamic change of images projected on a screen is realized.

The following 3 structures of embodiments that can implement the inventive concept are provided according to the different constitution of the unit barrier 31 in the interpretable barrier 3, but the specific structure thereof does not constitute a limitation of the present invention.

Example 1:

referring to fig. 3, each unit shutter 31 is formed by a blade of a driving motor control switch. The unit baffle 31 can rotate 90 degrees according to requirements, can shield incident light when being level with the outer frame, and can fully transmit the incident light when being vertical to the outer frame.

The structure is similar to a curtain, the opening and closing of each unit baffle 31 are controlled by each driving motor, all the driving motors are electrically connected and collected to a controller for operation and control, wherein the driving motors, the controller and the control mode thereof can be realized by adopting the prior art.

Example 2:

referring to fig. 4, each unit barrier 31' is a liquid crystal panel controlled by a driving circuit, and the driving circuit outputs a control signal to control the light transmission and the light shielding of the liquid crystal panel.

Example 3:

referring to fig. 5, each unit barrier 31 "is a transparent glass 31" b covered by a light adjusting film 31"a controlled by a driving circuit, and the driving circuit outputs a control signal to control the light transmission and light shielding of the light adjusting film.

In the

above embodiments

2 and 3, the light transmission and the light shielding of the liquid crystal panel or the light adjusting film can be realized by a conventional driving circuit, and those skilled in the art can reproduce the two embodiments according to the techniques disclosed in the two embodiments without creative work.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. A dynamic image projection system, comprising:

a light source;

the light-gathering convex lens is arranged adjacent to the light source and gathers light emitted by the light source to emit first emergent light;

the compiling baffle is used for receiving first emergent light emitted by the light-gathering convex lens and changing the first emergent light into second emergent light after the first emergent light penetrates through the compiling baffle;

a screen for receiving the third emergent light and forming an image;

the compiling baffle comprises a plurality of unit baffles arranged in an array, and a dynamic image is formed on the screen by adjusting the light transmission and the shielding of each unit baffle;

each unit baffle is composed of a fan blade for driving a motor control switch.

2. The dynamic image projection system of claim 1, wherein the microlens array assembly optically comprises: the micro-lens array comprises a first micro-lens array, a pattern panel and a second micro-lens array, wherein micro-lenses on the two micro-lens arrays are in one-to-one correspondence, and patterns on the pattern panel are also in one-to-one correspondence with the two micro-lens arrays.

3. The dynamic image projection system of claim 2, wherein the unit baffles on the interpretable baffle correspond one-to-one to the microlenses on the two microlens arrays.

4. The dynamic image projection system of claim 1, wherein the light source is an LED light source.