WO2020221084A1 - 成像装置及方法 - Google Patents

成像装置及方法 Download PDF

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Publication number
WO2020221084A1
WO2020221084A1 PCT/CN2020/086241 CN2020086241W WO2020221084A1 WO 2020221084 A1 WO2020221084 A1 WO 2020221084A1 CN 2020086241 W CN2020086241 W CN 2020086241W WO 2020221084 A1 WO2020221084 A1 WO 2020221084A1
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WO
WIPO (PCT)
Prior art keywords
light
light guide
image
guide surface
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2020/086241
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English (en)
French (fr)
Inventor
黄国生
郁志勇
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Publication of WO2020221084A1 publication Critical patent/WO2020221084A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2013—Plural light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof

Definitions

  • the invention relates to the field of optical imaging, in particular to an imaging device and method.
  • the existing DMD Digital Micromirror Device
  • DMD Digital Micromirror Device
  • each micromirror can flip quickly, and realizes the display control of frame and chromaticity and gray scale through time compounding.
  • the existing LCD Liquid Crystal Display, liquid crystal display
  • the existing LCD controls the shape of the liquid crystal to change different light transmittances to realize the display control of the frame and the chromaticity gray scale.
  • the existing L-COS Liquid Crystal ON Silicon, liquid crystal on silicon controls the shape of the liquid crystal to change the light transmittance and emissivity to realize the display control of the frame and the chromaticity gray scale.
  • the present invention provides an imaging device.
  • the imaging device includes a light emitting device, the light emitting device includes at least one row of light emitting units, the at least one row of light emitting units includes a plurality of light source pixel units, and the multiple light source pixel units correspond to one frame A column of pixels of an image; an image processing device for receiving image data of at least one frame of image, and processing the image data to obtain an image grayscale signal and a frame synchronization signal; a grayscale-current conversion device for converting the The image grayscale signal is converted into a current signal of corresponding intensity, wherein the image grayscale signals corresponding to the pixels of different columns of the frame image are sequentially converted into current signals of corresponding intensity in a predetermined sequence, and the current signals of corresponding intensity are sequentially output;
  • the light source driving device is used to control the at least one row of light-emitting units of the light-emitting device to sequentially emit image light beams under the drive of the sequentially output current signals;
  • the light guide device includes at least
  • the present invention also provides an imaging method, which includes: receiving image data of at least one frame of image, processing the image data to obtain an image grayscale signal and a frame synchronization signal; and converting the image grayscale signal into a corresponding intensity The current signal, wherein the image grayscale signals corresponding to the pixels in different columns of the frame image are sequentially converted into current signals of corresponding intensity in a predetermined sequence, and the current signals of corresponding intensity are sequentially output; Driven to control at least one row of light-emitting units to sequentially emit image light beams; drive at least one light guide surface to move according to the frame synchronization signal to guide the image light beams sequentially emitted by the at least one row of light-emitting units to different positions on the subject The frame image is displayed on the subject.
  • At least one row of light-emitting units is provided, and the at least one row of light-emitting units includes a plurality of light source pixel units, and the multiple light source pixel units correspond to a column of pixels of a frame of image, and then use image processing and grayscale.
  • Step-current conversion and other means according to the gray levels of pixels in different columns of a frame of image, sequentially drive the row of light-emitting units to emit image beams, and at the same time, by controlling the movement of the light guide surface of a light guide device, the image beams sequentially emitted by the light-emitting units are guided To different positions of the target object, thereby presenting the frame image on the target object, the imaging device provided by the present invention has a simple structure, low cost and easy implementation.
  • FIG. 1 is a three-dimensional schematic diagram of an imaging device provided by an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the components of the imaging device shown in FIG. 1.
  • 3a to 3d are schematic diagrams of the imaging process of the imaging device shown in FIG. 1.
  • FIG. 4 is a schematic diagram of a second embodiment of the light guide device of the imaging device shown in FIG. 1.
  • FIG. 5 is a schematic diagram of a third embodiment of the light guide device of the imaging device shown in FIG. 1.
  • FIG. 6 is a schematic diagram of a fourth embodiment of the light guide device of the imaging device shown in FIG. 1.
  • FIG. 7 is a method flowchart of an imaging method in an embodiment of the present invention.
  • the imaging device 1 includes a light-emitting device 10 and a light guide device 20, and the light guide device 20 is disposed on the light path of the light-emitting device 10 emitting image light beams.
  • the light guide device 20 has at least one light guide surface 21, and the image beams sequentially emitted by the light emitting device 10 are guided to different positions of a target object (the screen 8 is taken as an example below) through the movement of the light guide surface 21, thereby At least one frame of image is displayed on the screen 8.
  • the image light beam refers to a light beam that carries image information, for example, the image light beam is a light beam that carries grayscale information of one or more pixels in a frame of image.
  • the subject may be anything that can be projected and present the projected image, including walls, screens, and so on.
  • the imaging device 1 further includes an image processing device 30, a grayscale-current conversion device 40, a light source driving device 50 and a light guide driving device 60.
  • the image processing device 30 is configured to receive image data of at least one frame of image, and process the image data to obtain an image grayscale signal and a frame synchronization signal.
  • the image gray-scale signal is output to the gray-scale-current conversion device 40, and is converted by the gray-scale-current conversion device 40 into a current signal of corresponding intensity for controlling the light source driving device 50 in a predetermined sequence.
  • the predetermined sequence emits image beams of different intensities.
  • the frame synchronization signal is output to the light guide driving device 60, and the light guide driving device 60 drives the light guide device 20 to move according to the frame synchronization signal, thereby driving the light guide surface 21 to move, so that the light guide
  • the light surface 21 guides the image beams of different intensities sequentially emitted by the light-emitting unit 10 to different positions on the screen 8 during the movement process, so as to realize the display of the frame image on the screen 8.
  • the light guide device 20 is a rotatable light guide rod
  • the rotatable light guide rod includes a rotating shaft 22 and four light guide surfaces 21 arranged around the rotating shaft 22.
  • the rotating shaft 22 is connected to the light guide driving device 60 to be driven to rotate by the light guide driving device 60 to drive the four light guide surfaces 21 to rotate.
  • the four light guide surfaces 21 are reflective light guide surfaces that are sequentially connected end to end, and each light guide surface 21 extends in a direction parallel to the rotation axis 22.
  • the four light guide surfaces 21 are connected end to end to form a square pattern on any cross section perpendicular to the direction of the rotation axis 22.
  • the four light guide surfaces 21 sequentially enter the exit light path of the light emitting device 10, and each light guide surface 21 sequentially completes the task of reflecting the image beam of one frame of image to the screen 8 for display .
  • FIGS. 3a to 3d are schematic diagrams of a process in which one of the light guide surfaces 21 reflects the image light beam b of a frame of image onto the screen 8 for display during the rotation process.
  • the light guide surface 21 is driven by the rotating shaft 22 to rotate in a clockwise direction, and includes a front end 211 and a rear end 212 along the rotation direction.
  • the image beams b corresponding to a frame of image emitted by the light emitting device 10 are displayed on the screen 8 by the light guide surface 21 from left to right. As shown in FIG.
  • the front end 211 of the light guide surface 21 enters the exit light path of the light emitting device 10, and the image beam b emitted by the light emitting device 10 is reflected by the light guide surface 21 to the left end of the screen 8.
  • the light guide surface 21 clockwise Rotating, the light guide surface 21 enters the exit light path of the light emitting device 10 sequentially from the front end 211 to the rear end 212.
  • the image beam b is guided The light surface 21 is reflected to different positions of the screen 8.
  • the image beam b is incident on the light guide surface 21 at a position near the front end 211, and is reflected by the light guide surface 21 to a position near the left of the screen 8, as shown in FIG.
  • the image beam b is incident on the middle position of the light guide surface 21, and is reflected by the light guide surface 21 to the right of the center of the screen 8.
  • the image beam b is incident on the light guide surface 21
  • the rear end 212 is reflected by the light guide surface 21 to the right end of the screen 8.
  • one frame of image display is completed, and the light guide surface 21 leaves the exit light path of the image beam b, and is next to the other light guide surface 21 in the rotation direction.
  • the light guide surface 21 enters the exit light path of the image light beam b, and continues to reflect the image light beam of another frame image onto the screen 8.
  • the light-emitting device 10 includes at least one row of light-emitting units 11 and a mounting frame 13 for installing the light-emitting units 11, and the row of light-emitting units 11 is arranged in a direction parallel to the rotation axis 22 of the light guide device 20. Mentioned on the mounting frame 13.
  • Each light emitting unit 11 emits an image beam to the light guide surface 21.
  • the light emitting unit 11 includes a red light emitting unit 11a, a green light emitting unit 11b, and a blue light emitting unit 11c, and the red light emitting unit 11a, the green light emitting unit 11b and the blue light emitting unit 11c are parallel to the rotation axis 22. The directions are set in sequence.
  • a red light emitting unit 11a, a green light emitting unit 11b, and a blue light emitting unit 11c constitute a light source pixel unit, and each light source pixel unit corresponds to a pixel of the image. After a pixel of a frame of image is decoded by the image processing device 30, the red light gray level signal, the green light gray level signal, and the blue light gray level signal of the pixel are obtained.
  • the red light gray level signal and the green light gray level signal are And the blue gray scale signal is converted by the gray scale-current conversion device 40 into current signals that control the corresponding red light emitting unit 11a, green light emitting unit 11b, and blue light emitting unit 11c, thereby controlling the corresponding red light emitting unit 11a, green
  • the light emitting unit 11b and the blue light emitting unit 11c emit image light beams of corresponding intensity, and the image light beams emitted by the red light emitting unit 11a, the green light emitting unit 11b and the blue light emitting unit 11c are guided to the corresponding positions of the screen 8 by the light guide surface 21 Point to show a spot of the desired color at that position.
  • the row of light-emitting units 11 includes a plurality of light source pixel units, and the plurality of light source pixel units correspond to a row of pixels of a frame of image.
  • the gray-scale signals of pixels in different columns of a frame of image are output to the gray-scale-current conversion device 40, and the gray-scale-current conversion device 40 is sequentially converted into control in a predetermined sequence.
  • the current signal of the light source driving device 50 is used to control the luminous intensity of the image beams sequentially emitted by the row of light-emitting units 11, so as to finally display a frame of image on the screen 8.
  • each light-emitting unit 11 may be a laser, or a collimated LED lamp or the like. In other embodiments, each light-emitting unit 11 has a certain emission angle, so that the image beam emitted by each light-emitting unit 11 is expanded. Thereby, the area of the image presented on the screen 8 is enlarged. In addition, when the image light emitted by each light-emitting unit 11 is enlarged, the distance between the light-emitting unit 11 and the light guide 20 and/or the distance between the light guide 20 and the screen 8 can be adjusted to adjust the display on the screen. 8. The size of the image area.
  • each light-emitting unit 11 on the mounting frame 13 is fixed, that is, each light-emitting unit is fixed to a fixed position on the mounting frame 13.
  • the position of each light-emitting unit 11 on the mounting frame 13 can also be set to be movable, so as to adjust the distance between adjacent light-emitting units 11 according to different application conditions.
  • the red light emitting unit 11a, the green light emitting unit 11b, and the blue light emitting unit 11c in a row of light emitting units 11 are arranged in sequence to achieve a color display effect.
  • two or more rows of light-emitting units 11 may be provided, and each row of light-emitting units 11 is only a single color or two colors are interleaved.
  • two rows of light-emitting units 11 may be provided, one of which is red light.
  • the light-emitting units 11a and the green light-emitting units 11b are alternately arranged, and the other row of light-emitting units 11 are green light-emitting units 11b and blue light-emitting units are alternately arranged.
  • three rows of light-emitting units 11 can be arranged, and one row of light-emitting units 11 is red light-emitting units. 11a.
  • the other row of light emitting units 11 are green light emitting units 11b, and the other row of light emitting units 11 are blue light emitting units 11c.
  • all the light-emitting units 11 may be of the same color or only include two colors as required.
  • the grayscale signals of pixels in different columns of a frame of image are output to the grayscale-current conversion device 40, and are sequentially converted by the grayscale-current conversion device 40 in a predetermined order to control the light source driving device 50 ⁇ current signal.
  • the gray-scale signals of pixels in different columns of a frame of image are sequentially output to the gray-scale-current conversion device in a predetermined sequence, and then are sequentially converted into the control signal by the gray-scale-current conversion device 40 in the predetermined sequence.
  • the current signal of the light source driving device 50 is described.
  • each light guide surface 21 is rotated to reflect the image beams sequentially emitted by a row of light-emitting units 11 onto the screen 8 from left to right, so that images are presented on the screen 8 from left to right.
  • the light-guiding surface 21 can sequentially distribute the image beams emitted by a row of light-emitting units 11 Right to left or top to bottom, bottom to top reflection onto the screen 8, so that the screen 8 presents images from right to left, top to bottom, or bottom to top.
  • the light-emitting unit 11 in the light-emitting device 10 is arranged differently, and the image gray-scale signal of the entire frame of image is cut in different ways by the image processing device 30 or the gray-scale-current conversion device 40.
  • the image processing device 30 or the gray-scale-current conversion device 40 By dividing and setting different output sequences and controlling the movement mode of the light guide device 20, a variety of different ways of presenting images can also be realized on the screen.
  • the four successively connected surfaces of the light guide device 20 are light guide surfaces, that is, all surfaces of the light guide device 20 are light guide surfaces.
  • part of the light guide device 20 may be a light guide surface.
  • only one surface of the light guide device 20 is a light guide surface.
  • the shape, size, and arrangement of the other surfaces of the light guide device 20 that are not used as the light guide surface may be different from those of the light guide surface.
  • the multiple surfaces of the light guide device 20 may not be connected to each other.
  • the light guide device 20 may also include only one surface, the surface being the light guide surface 21, and the light guide device 20 is controlled to rotate so that the light guide surface 21 will The image beam of the frame image is guided to the screen 8 for display.
  • the light guide device 20 can also be controlled to move instead of rotating so that the light guide surface 21 guides the image beam of each frame of image to the screen 8 for display.
  • the light guide surface 21 of the light guide device 20 can guide the image light beam to the screen 8 for display by means of transmission or refraction.
  • the light guide surface 21 of the light guide device 20 extends in a direction parallel to the rotation axis 22, that is, the light guide surface 21 is parallel to the rotation axis 22.
  • the light guide surface 21 may not be parallel to the rotation axis 22, that is, an included angle may be formed between the plane where the light guide surface 21 is located and the rotation axis 22.
  • the arrangement of the light-emitting units 11 in a row of light-emitting units 11 may not be along the direction parallel to the rotation axis 22, and the arrangement direction of the light-emitting units 11 in a row of light-emitting units 11 may also form an angle with the rotation axis 22. .
  • FIG. 4 is a schematic cross-sectional view of the light guide device 20a perpendicular to its rotation axis 22a in the second embodiment.
  • the light guide device 20a is provided with eight end-to-end guides around its rotation axis 22a. Smooth 21a.
  • the eight light guide surfaces 21a surround the cross section to form a regular octagonal pattern.
  • FIG. 5 is a schematic cross-sectional view of the light guide device 20b perpendicular to its rotation axis 22b in the third embodiment.
  • the light guide device 20b is provided with three light guide surfaces connected end to end around its rotation axis 22b. 21b.
  • the three light guide surfaces 21b surround the cross section to form an equilateral triangle pattern.
  • FIG. 6 is a schematic cross-sectional view of the light guide device 20c perpendicular to its rotation axis 22c in the fourth embodiment.
  • the light guide device 20c is provided with four end-to-end guides around its rotation axis 22c. Smooth 21c.
  • the four light guide surfaces 21c are not flat as the light guide surface in the previous embodiment, but are designed with curved surfaces to solve the problem that the flat light guide surface guides image beams corresponding to different columns of pixels in a frame of image.
  • the moving speed is different.
  • the dot pitch (that is, the distance between adjacent pixels) on the screen 8 is different, and the scan rate is not uniform.
  • the image beam projected on the screen 8 is different in the dot pitch, which will cause the display on the screen 8. Distortion of the image on the screen, and the different scanning speed will cause the image to appear quickly and slowly when displayed column by column, which will affect the user's perception.
  • the light guide surface 21c intersects with a plane parallel to the rotation axis 22c in a straight line, and intersects with a plane perpendicular to the rotation axis 22c in a curve, so as to be curved in the rotation plane of the rotation axis 22c.
  • the four light guide surfaces 21c are connected end to end, and each light guide surface 21c intersects with the adjacent light guide surface 21c to form a corner 23.
  • the corner 23 is processed to eliminate The extra light at the edge of the image on the screen 8.
  • the corner 23 is set to be concave to eliminate the extra light at the edge of the image on the screen 8.
  • the concave means that the corner portion is concave toward the inside of the pattern formed by the light guide surface 21c.
  • the corners 23 can be chamfered or pasted with light-absorbing materials to also achieve the effect of eliminating excess light at the edges of the image.
  • the imaging device provided by the present invention is provided with at least one row of light-emitting units, the at least one row of light-emitting units includes a plurality of light source pixel units, and the multiple light source pixel units correspond to a column of pixels of a frame of image, and the image is reused.
  • Processing and grayscale-current conversion methods according to the grayscale of different columns of pixels in a frame of image, sequentially drive the emitted image beams of the row of light-emitting units, and at the same time, by controlling the movement of the light guide surface of a light guide device, the light-emitting units are sequentially emitted The image beam is guided to different positions on the screen, thereby presenting the frame image on the screen.
  • the imaging device provided by the present invention has a simple structure, low cost and easy implementation.
  • FIG. 7 is a method flowchart of an imaging method in an embodiment of the present invention.
  • the imaging method can be applied to the aforementioned imaging device 1.
  • step S701 the image processing device 30 receives image data of at least one frame of image, and processes the image data to obtain an image grayscale signal and a frame synchronization signal.
  • step S703 the grayscale-current conversion device 40 converts the image grayscale signal into a current signal of corresponding intensity, wherein the image grayscale signals corresponding to pixels in different columns of the frame image are sequentially converted into corresponding intensity signals in a predetermined order.
  • a current signal, the current signal of corresponding intensity is sequentially output to the light source driving device 50.
  • step S705 the light source driving device 50 controls the at least one column of light emitting units 11 to sequentially emit image light beams under the driving of the current signals sequentially output.
  • step S707 the light guide driving device 60 drives the light guide surface 21 (or the light guide surfaces 21a, 21b, 21c) to move according to the frame synchronization signal to guide the image beams sequentially emitted by the at least one column of light-emitting units 11 to the screen 8. To display the frame image.
  • the light guide driving device 60 drives the rotation shaft 22 (or the rotation shafts 22a, 22b, 22c) of the light guide device 20 (or the light guide device 20a, 20b, 20c) to rotate according to the frame synchronization signal to drive
  • the light guide surface 21 (or light guide surfaces 21a, 21b, 21c) rotates around the rotation axis 22 (or rotation axis 22a, 22b, 22c).

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Abstract

本发明提供一种成像装置及方法，包括：包括至少一列发光单元的发光装置，发光单元包括对应一帧图像的一列像素的多个光源像素单元；图像处理装置，用于对一帧图像的图像数据进行处理以获得图像灰阶信号与帧同步信号；灰阶-电流转换装置，用于将图像灰阶信号依次转换成对应强度的电流信号并依次输出电流信号；光源驱动装置，用于在依次输出的电流信号的驱动下控制发光单元依次发出图像光束；导光装置，包括导光面，导光面通过运动进入和退出发光装置的出射光路，在进入发光装置的出射光路后将发光单元依次发出的图像光束引导至一标的物的不同位置，以在该标的物上显示该帧图像；及导光驱动装置，用于根据帧同步信号驱动导光面运动。本发明结构简单且成本较低。

Description

成像装置及方法 技术领域
本发明涉及光学成像领域，尤其涉及一种成像装置与方法。
背景技术
现有的DMD(Digital Micromirror Device，数字微镜器件)采用数字微镜技术，利用每个微镜能快速翻转的特性，通过时间复合的方式，实现对帧及色度灰阶的显示控制。
现有的LCD(Liquid Crystal Display，液晶显示)通过控制液晶形态，改变不同的透光率，实现对帧及色度灰阶的显示控制。
现有的L-COS(Liquid Crystal ON Silicon，硅基液晶)通过控制液晶形态，改变透光率和发射率，实现对帧及色度灰阶的显示控制。
然现有的这些显示技术，均存在结构复杂且价格昂贵等问题。
发明内容
鉴于上述状况，有必要提供一种能够结构简单且成本较低的成像装置及方法。
本发明提供一种成像装置，所述成像装置包括：发光装置，所述发光装置包括至少一列发光单元，所述至少一列发光单元包括多个光源像素单元，所述多个光源像素单元对应一帧图像的一列像素；图像处理装置，用于接收至少一帧图像的图像数据，对所述图像数据进行处理以获得图像灰阶信号与帧同步信号；灰阶-电流转换装置，用于将所述图像灰阶信号转换成对应强度的电流信号，其中，对应该帧图像不同列像素的图像灰阶信号被按预定顺序依次转换成对应强度的电流信号，所述对应强度的电流信号被依次输出；光源驱动装置，用于在依次输出的所述电流信号的驱动下控制所述发光装置的所述至少一列发光单元依次发出图像光束；导光装置，包括至少一导光面，所述至少一导光面通过运动进入和退出所述至少一列发光装置的出射光路， 并在进入所述至少一列发光装置的出射光路后通过运动将所述至少一列发光单元依次发出的图像光束引导至一标的物的不同位置，以在该标的物上显示该帧图像；及导光驱动装置，用于根据所述帧同步信号驱动所述导光装置的所述至少一导光面运动。
本发明还提供一种成像方法，包括：接收至少一帧图像的图像数据，对所述图像数据进行处理以获得图像灰阶信号与帧同步信号；将所述图像灰阶信号转换成对应强度的电流信号，其中，对应该帧图像不同列像素的图像灰阶信号被按预定顺序依次转换成对应强度的电流信号，所述对应强度的电流信号被依次输出；在依次输出的所述电流信号的驱动下控制至少一列发光单元依次发出图像光束；根据所述帧同步信号驱动至少一导光面运动以将所述至少一列发光单元依次发出的图像光束引导至标的物上的不同位置，以在该标的物上显示该帧图像。
本发明提供的成像装置及方法，通过设置至少一列发光单元，所述至少一列发光单元包括多个光源像素单元，所述多个光源像素单元对应一帧图像的一列像素，再利用图像处理与灰阶-电流转换等手段，根据一帧图像不同列像素的灰阶依次驱动所述一列发光单元发出图像光束，同时通过控制一导光装置的导光面运动，将发光单元依次发出的图像光束引导至标的物的不同位置，从而在标的物上呈现该帧图像，本发明提供的成像装置结构简单，成本较低且易于实现。
附图说明
图1为本发明一实施方式提供的成像装置的立体示意图。
图2为图1所示成像装置的部件组成示意图。
图3a-图3d为图1所示成像装置成像过程的示意图。
图4为图1所示成像装置的导光装置的第二种实施方式的示意图。
图5为图1所示成像装置的导光装置的第三种实施方式的示意图。
图6为图1所示成像装置的导光装置的第四种实施方式的示意图。
图7为本发明一种实施方式中的成像方法的方法流程图。
符号说明
成像装置 1
屏幕 8
发光装置 10
发光单元 11
安装架 13
导光装置 20
导光面 21、21a、21b、21c
转动轴 22、22a、22b、22c
角部 23
图像处理装置 30
灰阶-电流转换装置 40
光源驱动装置 50
导光驱动装置 60
前端 211
后端 212
图像光束 b
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是本发明还可以采用其他不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似应用，因此本发明不受下面公开的具体实施例的限制。
请参阅图1所示，在一种实施方式中，成像装置1包括发光装置10及导光装置20，所述导光装置20设置于所述发光装置10发出图像光束的光路上。所述导光装置20具有至少一导光面21，通过所述导光面21的运动将发光装置10依次发出的图像光束引导至一标的物(以下以屏幕8为例)的不同位置，从而在屏幕8上实现至少一帧图像的显示。其中，所述图像光束是指携带图像信息的光束，例如，所述图像光束是携带一帧图像中的一或多个像素点的灰阶信息的光束。
可以理解，所述标的物可以是能被投影并呈现所投影图像的任何事物，包括墙壁、屏幕等。
请参阅图2所示，所述成像装置1还包括图像处理装置30、灰阶-电流转换装置40、光源驱动装置50及导光驱动装置60。其中，所述图像处理装置30用于接收至少一帧图像的图像数据，对所述图像数据进行处理以获得图像灰阶信号与帧同步信号。所述图像灰阶信号被输出至灰阶-电流转换装置40，被所述灰阶-电流转换装置40按照预定顺序转换成对应强度的控制所述光源驱动装置50的电流信号，所述电流信号被按照所述预定顺序输出至所述光源驱动装置50，所述光源驱动装置50根据依次接收到的电流信号的强弱控制所述发光装置10的发光强度，从而使所述发光装置10按照所述预定顺序发出不同强度的图像光束。所述帧同步信号被输出至导光驱动装置60，所述导光驱动装置60根据所述帧同步信号驱动所述导光装置20运动，从而带动所述导光面21运动，使所述导光面21在运动过程中将所述发光单元10依次发出的不同强度的图像光束引导至屏幕8上的不同位置，从而实现该帧图像在屏幕8上的显示。
在本实施方式中，所述导光装置20为一可旋转导光柱，所述可旋转导光柱包括转动轴22及环绕所述转动轴22设置的四个所述导光面21。所述转动轴22被连接至所述导光驱动装置60以被所述导光驱动装置60驱动旋转，从而带动四个所述导光面21旋转。在本实施方式中，四个导光面21为彼此首尾顺次相接的反射式导光面，每一导光面21均沿平行于转动轴22的方向延伸。四个导光面21在垂直于转动轴22方向的任一截面上彼此首尾相接围合成一正方形图案。在被旋转轴22带动旋转的过程中，四个导光面21依次进入发光装置10的出射光路，每一导光面21依次完成反射一帧图像的图像光束至屏幕8上进行显示的任务。
请参阅图3a-图3d所示，为其中一个导光面21在转动过程中将一帧图像的图像光束b反射至屏幕8上进行显示的过程示意图。其中，所述导光面21被旋转轴22带动进行顺时针方向的旋转，沿其转动方向包括一前端211与一后端212。在导光面21顺时针旋转的过程中，发光装置10发出的对应一帧图像的强度不一的图像光束b被导光面 21由左至右显示于屏幕8上。如图3a所示，导光面21的前端211进入发光装置10的出射光路，发光装置10发出的图像光束b被导光面21反射至屏幕8的左端，随着导光面21顺时针转动，导光面21从前端211到后端212依次进入发光装置10的出射光路，同时由于导光面21在旋转过程中与图像光束b之间呈不同的角度，因此图像光束b被导光面21反射至屏幕8的不同位置，如图3b所示，图像光束b入射至导光面21中部靠前端211的位置，被导光面21反射至屏幕8的中部靠左的位置，如图3c所示，图像光束b入射至导光面21的中间位置，被导光面21反射至屏幕8的中部靠右的位置，如图3d所示，图像光束b入射至导光面21的后端212，被导光面21反射至屏幕8的右端，至此，一帧图像显示完成，导光面21离开图像光束b的出射光路，在旋转方向上紧接导光面21的另一导光面21进入图像光束b的出射光路，继续将另一帧图像的图像光束反射至屏幕8上。
在本实施方式中，所述发光装置10包括至少一列发光单元11及安装所述发光单元11的安装架13，所述一列发光单元11沿平行导光装置20的旋转轴22的方向设置于所述安装架13上。每一发光单元11发出一束图像光束至导光面21。在本实施方式中，发光单元11包括红光发光单元11a、绿光发光单元11b及蓝光发光单元11c，且红光发光单元11a、绿光发光单元11b与蓝光发光单元11c沿平行于旋转轴22的方向依次设置。一红光发光单元11a、一绿光发光单元11b及一蓝光发光单元11c构成一光源像素单元，每一光源像素单元对应于图像的一像素。一帧图像的一像素在被所述图像处理装置30解码后获得该像素的红光灰阶信号、绿光灰阶信号和蓝光灰阶信号，所述红光灰阶信号、绿光灰阶信号以及蓝光灰阶信号被所述灰阶-电流转换装置40转换成控制对应红光发光单元11a、绿光发光单元11b及蓝光发光单元11c的电流信号，从而控制对应的红光发光单元11a、绿光发光单元11b及蓝光发光单元11c发出相应强度的图像光束，所述红光发光单元11a、绿光发光单元11b及蓝光发光单元11c发出的图像光束被导光面21引导至屏幕8的对应位置点，以在该位置点呈现出所需颜色的光斑。所述一列发光单元11包括多个光源像素单元，所述多个光源像素单元对应一帧图像的一列像素。在随着导光面21移动的过程 中，一帧图像不同列像素的灰阶信号被输出至灰阶-电流转换装置40，被所述灰阶-电流转换装置40按预定顺序依次转换成控制所述光源驱动装置50的电流信号，以控制所述一列发光单元11依次出射的图像光束的发光强度，从而最终在屏幕8上显示一帧图像。
在本实施方式中，每一发光单元11可以是激光，还可以是经过准直处理的LED灯等。在其他实施方式中，每一发光单元11具有一定的发射角度，从而使每一发光单元11发出的图像光束呈扩大状。从而扩大呈现在屏幕8上的图像面积。另外，在每一发光单元11发出的图像光呈扩大状时，还可通过调节发光单元11至导光装置20之间的距离及/或导光装置20至屏幕8的距离来调节呈现在屏幕8上的图像面积的大小。
在本实施方式中，每一发光单元11在安装架13上的位置固定，也就是说，每一发光单元被固定至安装架13上的固定位置。在其他实施方式中，每一发光单元11在安装架13上的位置也可设置成活动式，以便根据不同应用情况调节相邻发光单元11之间的间距。
在本实施方式中，一列发光单元11中红光发光单元11a、绿光发光单元11b、蓝光发光单元11c依次排列以实现彩色显示效果。在其他实施方式中，可以设置两或多列发光单元11，每一列发光单元11仅为单一颜色或两种颜色交错设置，例如，可以设置两列发光单元11，其中一列发光单元11为红光发光单元11a与绿光发光单元11b交错设置，另一列发光单元11为绿光发光单元11b与蓝光发光单元交错设置，再如，可以设置三列发光单元11，一列发光单元11为红光发光单元11a、另一列发光单元11为绿光发光单元11b、再一列发光单元11为蓝光发光单元11c。在其他实施方式中，根据需要，所有发光单元11可以是同一颜色，或仅包括两种颜色。
在本实施方式中，一帧图像不同列像素的灰阶信号被输出至灰阶-电流转换装置40，被所述灰阶-电流转换装置40按预定顺序依次转换成控制所述光源驱动装置50的电流信号。在其他实施方式中，一帧图像不同列像素的灰阶信号被按预定顺序依次输出至灰阶-电流转换装置，再被所述灰阶-电流转换装置40按该预定顺序依次转换成控制所述光源驱动装置50的电流信号。
在本实施方式中，每一导光面21被转动以将一列发光单元11依次发出的图像光束依次由左至右反射至屏幕8上，使屏幕8上由左至右呈现图像。在其他实施方式中，通过改变发光装置10、导光装置20及屏幕8三者之间的位置关系、摆放方向，所述导光面21可以将一列发光单元11依次发出的图像光束依次由右至左或者由上至下、由下至上反射至屏幕8上，使屏幕8上由右至左、由上至下或者由下至上地呈现图像。甚至，在其他实施方式中，通过对发光装置10中发光单元11进行不同的排布、通过图像处理装置30或灰阶-电流转换装置40对整帧图像的图像灰阶信号进行不同方式的切分及设定不同的输出顺序、及通过控制导光装置20的运动方式，还可在屏幕上实现多种呈现图像的不同方式。
在本实施方式中，所述导光装置20的四个首尾顺次相连的面均为导光面，即所述导光装置20的所有面均为导光面。在其他实施方式中，所述导光装置20可以是部分面为导光面。例如，所述导光装置20仅有一个面为导光面，此时，导光装置20中其他不作为导光面的面的形状、大小、摆放方式可以与作为导光面的面不同。在其他实施方式中，所述导光装置20的多个面之间也可以不相互连接。在其他实施方式中，所述导光装置20也可仅包含一个面，所述面为所述导光面21，所述导光装置20被控制转动以使所述导光面21将每一帧图像的图像光束引导至屏幕8上进行显示。在其他实施方式中，所述导光装置20也可被控制移动而非转动以使导光面21将每一帧图像的图像光束引导至屏幕8上进行显示。在其他实施方式中，所述导光装置20的导光面21可以通过透射或折射的方式引导图像光束至屏幕8上进行显示。
在本实施方式中，导光装置20的导光面21沿平行于转动轴22的方向延伸，亦即所述导光面21平行于所述转动轴22。在其他实施方式中，所述导光面21亦可不平行所述转动轴22，也就是说，所述导光面21所在的平面与转动轴22之间可以呈一夹角。在其他实施方式中，一列发光单元11中发光单元11的排列也可不沿平行于旋转轴22的方向，一列发光单元11中发光单元11的排列方向也可与转动轴22之间呈一夹角。
请参阅图4所示，为第二种实施方式中的导光装置20a垂直其转 动轴22a的截面示意图，所述导光装置20a环绕其转动轴22a设置了八个首尾顺次相接的导光面21a。所述八个导光面21a在所述截面上环绕构成一正八角形图案。
请参阅图5所示，为第三种实施方式中的导光装置20b垂直其转动轴22b的截面示意图，所述导光装置20b环绕其转动轴22b设置了三个首尾相接的导光面21b。所述三个导光面21b在所述截面上环绕构成一正三角形图案。
请参阅图6所示，为第四种实施方式中的导光装置20c垂直其转动轴22c的截面示意图，所述导光装置20c环绕其转动轴22c设置了四个首尾顺次相接的导光面21c。在本实施方式中，四个导光面21c并非如前面实施例中的导光面一样呈平面，而是呈曲面设计，以解决平面导光面在引导对应一帧图像不同列像素的图像光束至屏幕8时，由于图像光束从发光单元11至屏幕8不同位置的距离不等及导光面在垂直转动轴的方向上每点与转动轴之间的距离不等因而移动速度不等等，而导致的屏幕8上的点距(即相邻像素点之间的距离)不一及扫描速率不一等问题，其中，投射于屏幕8上的图像光束点距不一会导致显示于屏幕8上的图像变形，扫描速度不一会导致图像在逐列显示时呈现时快时慢的现象，进而影响用户观感。在本实施方式中，所述导光面21c与平行于转动轴22c的平面相交呈一直线，而与垂直转动轴22c的平面相交呈一曲线，从而在转动轴22c的转动平面内呈曲面设计，以修正屏幕上显示图案的点距及扫描移动速率。
在本实施方式中，四个导光面21c首尾顺次相接，每一导光面21c与相邻导光面21c之间相交形成一角部23，所述角部23被处理以消除呈现在屏幕8上的图像边缘的多余光，在本实施方式中，所述角部23设置成内凹，以消除呈现在屏幕8上的图像边缘的多余光。其中，所述内凹是指所述角部朝向导光面21c围合形成的图案内部凹陷。在其他实施方式中，所述角部23可被削角或贴吸光材料，以同样达到消除图像边缘多余光的效果。
综上所述，本发明提供的成像装置，通过设置至少一列发光单元，所述至少一列发光单元包括多个光源像素单元，所述多个光源像素单元对应一帧图像的一列像素，再利用图像处理与灰阶-电流转换等手 段，根据一帧图像不同列像素的灰阶依次驱动所述一列发光单元的发出图像光束，同时通过控制一导光装置的导光面运动，将发光单元依次发出的图像光束引导至屏幕的不同位置，从而在屏幕上呈现该帧图像，本发明提供的成像装置结构简单，成本较低且易于实现。
请参阅图7所示，为本发明一实施方式中的成像方法的方法流程图。所述成像方法可应用于前述的成像装置1中。
在步骤S701中，图像处理装置30接收至少一帧图像的图像数据，对所述图像数据进行处理以获得图像灰阶信号与帧同步信号。
步骤S703中，灰阶-电流转换装置40将所述图像灰阶信号转换成对应强度的电流信号，其中，对应该帧图像不同列像素的图像灰阶信号被按预定顺序依次转换成对应强度的电流信号，所述对应强度的电流信号被依次输出至光源驱动装置50。
步骤S705中，光源驱动装置50在依次输出的电流信号的驱动下控制所述至少一列发光单元11依次发出图像光束。
步骤S707中，导光驱动装置60根据所述帧同步信号驱动导光面21(或导光面21a、21b、21c)运动以将所述至少一列发光单元11依次发出的图像光束引导至屏幕8上的不同位置，以显示该帧图像。
进一步地，所述导光驱动装置60根据所述帧同步信号驱动导光装置20(或导光装置20a、20b、20c)的转动轴22(或转动轴22a、22b、22c)转动，以带动所述导光面21(或导光面21a、21b、21c)绕所述转动轴22(或转动轴22a、22b、22c)转动。
以上实施方式仅用以说明本发明的技术方案而非限制，对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种成像装置，其特征在于，包括：
    发光装置，所述发光装置包括至少一列发光单元，所述至少一列发光单元包括多个光源像素单元，所述多个光源像素单元对应一帧图像的一列像素；
    图像处理装置，用于接收至少一帧图像的图像数据，对所述图像数据进行处理以获得图像灰阶信号与帧同步信号；
    灰阶-电流转换装置，用于将所述图像灰阶信号转换成对应强度的电流信号，其中，对应该帧图像不同列像素的图像灰阶信号被按预定顺序依次转换成对应强度的电流信号，所述对应强度的电流信号被依次输出；
    光源驱动装置，用于在依次输出的所述电流信号的驱动下控制所述发光装置的所述至少一列发光单元依次发出图像光束；
    导光装置，包括至少一导光面，所述至少一导光面通过运动进入和退出所述至少一列发光装置的出射光路，并在进入所述至少一列发光装置的出射光路后通过运动将所述至少一列发光单元依次发出的图像光束引导至一标的物的不同位置，以在该标的物上显示该帧图像；及导光驱动装置，用于根据所述帧同步信号驱动所述导光装置的所述至少一导光面运动。
  2. 如权利要求1所述的成像装置，其特征在于，所述导光装置还包括转动轴，所述导光驱动装置驱动所述转动轴转动以驱动所述至少一导光面绕所述转动轴转动。
  3. 如权利要求2所述的成像装置，其特征在于，所述至少一导光面沿平行于所述转动轴的方向延伸，所述至少一列发光单元中每列发光单元沿平行于所述转动轴的方向设置。
  4. 如权利要求1所述的成像装置，其特征在于，所述至少一导光面中的每一导光面为平面导光面。
  5. 如权利要求1所述的成像装置，其特征在于，所述至少一导光面中的 每一导光面为曲面导光面。
  6. 如权利要求5所述的成像装置，其特征在于，所述导光装置还包括转动轴，所述导光驱动装置驱动所述转动轴转动以驱动所述至少一导光面绕所述转动轴转动，所述至少一导光面中的每一导光面与垂直所述转动轴的平面相交呈一曲线。
  7. 如权利要求2所述的成像装置，其特征在于，所述至少一导光面的数量为至少两个，所述至少两个导光面在所述转动轴转动的方向首尾顺次相连。
  8. 如权利要求7所述的成像装置，其特征在于，所述至少两个导光面中的相邻导光面之间相交形成一角部，所述角部被设置成内凹、削角或者贴附吸光材料。
  9. 一种成像方法，其特征在于，包括：
    接收至少一帧图像的图像数据，对所述图像数据进行处理以获得图像灰阶信号与帧同步信号；
    将所述图像灰阶信号转换成对应强度的电流信号，其中，对应该帧图像不同列像素的图像灰阶信号被按预定顺序依次转换成对应强度的电流信号，所述对应强度的电流信号被依次输出；
    在依次输出的所述电流信号的驱动下控制至少一列发光单元依次发出图像光束；及
    根据所述帧同步信号驱动至少一导光面运动以将所述至少一列发光单元依次发出的图像光束引导至一标的物上的不同位置，以在该标的物上显示该帧图像。
  10. 如权利要求9所述的成像方法，其特征在于，根据所述帧同步信号驱动所述至少一导光面运动具体为：根据所述帧同步信号驱动一转动轴转动，所述转动轴的转动带动所述至少一导光面绕所述转动轴转动。
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