WO2019127828A1 - 光源系统及投影设备 - Google Patents

光源系统及投影设备 Download PDF

Info

Publication number
WO2019127828A1
WO2019127828A1 PCT/CN2018/074744 CN2018074744W WO2019127828A1 WO 2019127828 A1 WO2019127828 A1 WO 2019127828A1 CN 2018074744 W CN2018074744 W CN 2018074744W WO 2019127828 A1 WO2019127828 A1 WO 2019127828A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
color
source system
filter segments
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
Application number
PCT/CN2018/074744
Other languages
English (en)
French (fr)
Inventor
王则钦
戴达炎
郭祖强
杜鹏
李屹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Appotronics Corp Ltd
Original Assignee
Appotronics Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Publication of WO2019127828A1 publication Critical patent/WO2019127828A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/23—Photochromic filters
    • 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
    • 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
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • 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
    • G03B21/208—Homogenising, shaping of the illumination light

Definitions

  • the present invention relates to the field of projection display technologies, and in particular, to a light source system and a projection device.
  • Space light modulators are widely used in the field of projection display.
  • Space light modulators generally include LCD, LCOS, DMD, etc.
  • the monolithic spatial light modulator projection system realizes color projection display based on the base light of timing switching. This system has a simple structure and low cost.
  • the spatial light modulator modulates the illumination light according to the received image signal to respectively generate a red light image, a green light image, and a blue light image (or yellow Light image), the image of each primary color light is time-division multiplexed to form a complete image of one frame.
  • the image display is displayed at a double speed, that is, the refresh frequency of the illumination light is 120 Hz, and the image frame rate is 60 Hz.
  • the primary color light images are displayed twice.
  • the measure adopted is to divide the filter segment.
  • the red filter segment is divided into two segments, and the driving device rotates one turn, and the red image is refreshed twice.
  • the use of such measures also requires corresponding sacrifices.
  • the transmittance lines of each filter segment are inconsistent, the color and brightness of the primary color light will be inconsistent, or The problem of gray scale discontinuity of the primary color light image.
  • the transmission spectrum of each filter segment needs to be consistent, which will increase the difficulty of processing the filter section and increase the cost.
  • the present invention provides a light source system and a projection apparatus with better uniformity of primary light and brightness.
  • a light source system comprising:
  • a primary light source for emitting excitation light
  • a color wheel for receiving the excitation light, the color wheel comprising a plurality of filter segments of the same color, the color wheel periodically moving under the driving of the driving device, so that the plurality of filter segments are emitted
  • the light beam forms a mixed light that is consistent with the color and brightness of the standard primary light on the optical path where the excitation light is located.
  • a projection apparatus comprising a light source system as described above.
  • the present invention provides the light source system and a projection apparatus applying the same, wherein the color wheel in the light source system includes a plurality of filter segments that emit the same color, and the mixed light of the plurality of filter segments is The color and brightness of the standard primary color light are consistent, which ensures the uniformity of the primary light emitted by the light source system, and the projection system normally emits an image.
  • FIG. 1 is a schematic structural diagram of a projection apparatus according to a first aspect of the present invention.
  • FIG. 2 is a schematic top plan view of the color wheel shown in FIG. 1.
  • FIG. 3 is a timing diagram of a filter segment on the color wheel of the color wheel shown in FIG.
  • FIG. 4 is a graph showing the passage rate of the first filter segment and the second filter segment in an embodiment of the color wheel shown in FIG. 1.
  • FIG. 5 is a schematic structural diagram of a projection apparatus according to a second aspect of the present invention.
  • Projection equipment 10 20 Light source system 100,300 Spatial light modulator 200, 400 Main light source 110,310 Drive unit 120,320
  • FIG. 1 is a schematic structural diagram of a projection device 10 according to a preferred embodiment of the present invention.
  • the projection apparatus 10 includes a light source system 100 and a spatial light modulator 200 for modulating a light beam emitted from the light source system 100 and emitting image light.
  • the light source system 100 includes a main light source 110 , a driving device 120 , and a color wheel 130 .
  • the main light source 110 is used to emit excitation light.
  • the color wheel 130 is configured to receive the excitation light and perform wavelength conversion or color modification on the excitation light.
  • the main light source 110 may include an illuminant for generating excitation light and a shimming device that homogenizes the excitation light.
  • the main light source 110 is a red light source that emits red excitation light. It can be understood that the main light source 110 is not limited to a red light source, and the main light source 110 may also be an ultraviolet light source, a blue light source or a green light source.
  • the illuminant is a red laser for emitting red laser light as excitation light. It can be understood that the illuminant can include one or two lasers or a red laser array, and the number of lasers can be selected according to actual needs.
  • the color wheel 130 may include a wavelength conversion region for wavelength-converting incident excitation light to obtain a laser beam, and a filter region for the laser beam.
  • the wavelength conversion region and the filter region are distributed in a ring shape.
  • the filter segments of different colors on the filter region are disposed corresponding to segments of the same color on the wavelength conversion region.
  • the color wheel 130 includes a wavelength conversion region and a filter layer disposed on a side of the wavelength conversion region, the filter layer covers a light exiting side of the wavelength conversion region, and the filter The different colored filter segments of the light layer cover the segments of the same color on the wavelength conversion region, and the color wheel may also include only the filter regions.
  • the color wheel 130 is periodically moved by the driving device 120.
  • the driving device 120 is disposed on a geometric central region of the surface of the color wheel 130 to drive the color wheel 130 to rotate periodically around the driving device 120 at a high speed.
  • the different filter segments on the color wheel 130 are periodically positioned on the optical path where the excitation light is located, and the color wheel 130 sequentially emits three primary colors of light.
  • the driving device 120 is disposed at one end of the color wheel 130, and drives the color wheel 130 to perform periodic motion, and the color wheel 130 sequentially emits three primary colors of light.
  • FIG. 2 is a schematic top view of the color wheel 130 shown in FIG. 1
  • FIG. 3 is a filter on the color wheel of the color wheel shown in FIG. Segment timing diagram.
  • the color wheel 130 includes a plurality of filter segments of the same color, and the plurality of filter segments may be disposed at intervals or may be adjacently disposed.
  • the color wheel 130 includes a first filter segment R1 and a second filter segment R2 that are spaced apart.
  • the first filter segment R1 and the second filter segment R2 are capable of emitting red primary color light, wherein the first filter segment R1 emits red first light and the second filter segment R2 emits red second light.
  • the filter wheel further includes two segments of blue filter segments B1 and B2 capable of emitting blue primary light, and two segments of green filter segments G1 and G2 capable of emitting green primary light. It is to be understood that in other embodiments, the color wheel 130 may include more than two segments of the same color filter segment, and is not limited thereto.
  • the image display is displayed at a frequency of four times speed, that is, the image frame rate is 60 Hz, and the refresh rate of the primary color light is 240 Hz.
  • the color wheel 130 rotates two times in each frame period.
  • the filter segments of the same color are spaced apart.
  • the color wheel 130 emits two red lights, two blue lights, and two green lights. That is, each color base color is refreshed four times in each frame period.
  • the switching speed of the primary color light of different colors is improved under the same rotation speed, thereby greatly reducing the influence of the rainbow effect on the quality of the projected image.
  • the color wheel 130 can increase the refresh frequency of the primary color primary light, such as the display frequency of eight times or higher frequency, driven by the driving device 120.
  • the tolerances of the pass rates of the first filter segment R1 and the second filter segment R2 are the same, and the pass rate is not biased.
  • the first filter segment R1 and the second filter segment R2 have the same tolerance level of 50% corresponding wavelength.
  • the deviation value t is generally greater than 5 nm, and the smaller the tolerance, the greater the manufacturing difficulty and the higher the cost.
  • the standard red primary color light can be emitted from the first filter segment R1 and the second filter segment R2.
  • the filter segments are not limited to two segments, the tolerance levels of the pass rates are the same, and the pass rate is not biased.
  • the standard is the DCI-P3 color standard, which defines the color and brightness of various primary colors of light. It can be understood that in other embodiments, color standards applied in other projection device fields such as Rec. 709 can be selected.
  • the excitation light is time-divisionally irradiated with the first filter segment R1 and the second filter segment R2.
  • the first first filter segment R1 emits the first red light
  • the red second light emitted by the second filter segment R2 is substantially the same red light, which ensures the consistency of the light source system 100 to emit red primary light.
  • the substantially the same means that the color and brightness of the red first light and the red second light are the same in a certain error range.
  • the two green filter segments of the color wheel 130 can adopt the green filter segments with the same tolerance level, and the two blue filter segments can also adopt the blue filter segments with the same tolerance level to ensure The color wheel 130 emits the light uniformity of the three primary colors of light.
  • the pass rate curve of the filter section is shifted, so that the filter section is divided into multiple grades.
  • FIG. 4 is a graph of the pass rate of the first filter segment R1 and the second filter segment R2 in an embodiment of the color wheel 130 shown in FIG. 1 .
  • the first filter segment R1 and the second filter segment R2 are cut-off filter segments, the tolerance levels of the pass rates are different, and the pass rate deviations are complementary.
  • a curve a is a pass rate curve of the first filter segment R1
  • a curve b is a pass rate curve of an ideal red filter segment capable of emitting the standard red primary color light
  • the curve c is a second The pass rate curve of the filter segment R2.
  • the first filter segment R1 and the second filter segment R2 are cut-off filter segments, and the corresponding wavelength is 50% when the pass rate in the filter segment pass rate curve is 50%.
  • the tolerances of the first filter segment R1 and the second filter segment R2 are different, and the pass rate deviation is complementary, and the pass rate deviations of the first filter segment R1 and the second filter segment R2 are added to zero.
  • the red first light covers a wavelength range greater than the standard red primary color light, the red first light increases relative to the standard red primary color, and the color purity may deteriorate; the red second light covers The wavelength range is smaller than the standard red primary color light, and the red second light is reduced in brightness relative to the standard red primary color, and the color purity is increased.
  • the red first light and the red second light are incident on the spatial light modulator 200 in a time division manner.
  • the first filter segment R1 and the second filter segment R2 have different tolerance levels, and the pass rate deviations are complementary.
  • the color wheel 130 includes at least two pairs of filter segments, wherein the absolute values of the deviations of the pass rates of the at least two pairs of filter segments are different.
  • the pair of filter segments of the same color have different tolerance levels and the pass rate deviations are opposite.
  • T50% of the first filter segment R1 A-t
  • T50% of the second filter segment R2 A+2t.
  • the color of the mixed red primary light can be controlled by the relative proportion of the area occupied by the first filter segment R1 and the second filter segment R2 on the color wheel 130. And the brightness is consistent with the standard red primary light.
  • the color wheel 130 can be disposed in the same manner and two blue filter segments B1, B2 to ensure the uniformity of the blue primary light.
  • the ideal green filter segment can emit standard green primary color light
  • the two green filter segments G1 and G2 on the color wheel 130 are band pass filter segments, and the tolerance levels of the center frequencies are different.
  • the center wavelength of the green filter segment G1 pass rate curve is greater than the ideal green filter segment
  • the center wavelength of the green filter segment G2 pass rate curve is smaller than the ideal green filter segment
  • the pass ratio deviation of the green filter segment G1 and the green filter segment G2 is complementary. Therefore, the color wheel 130 emits two green lights, and the mixed light of the standard green primary light color and brightness can be obtained according to the principle of metamerism.
  • the color wheel 130 uses the first filter segment R1 of the same or different pass rate tolerance level in combination with the second filter segment R2, so that the red first light and the red color are emitted.
  • the mixed light of the two lights is consistent with the color and brightness of the standard red primary light, ensuring the consistency of the light source system 100 to emit red primary light.
  • FIG. 5 is a schematic structural diagram of a light source system 300 according to a second aspect of the present invention.
  • the light source system 300 further includes a supplemental light source 340 for emitting supplemental light, and a control device 350 for controlling the primary light source 310 and the supplemental light source 340.
  • the main light source 310 is disposed adjacent to the supplemental light source 340 such that the color wheel 330 outputs a light beam on the same optical path.
  • the main light source 310 and the supplemental light source 340 are different light sources, that is, the excitation light emitted by the main light source 310 is different from the complementary light color and/or brightness emitted by the supplemental light source 340, and the brightness and color of the standard red primary color light are correspondingly interposed between the excitations. Between the light and the supplemental light. Specifically, the wavelength of the standard red primary light is between the excitation light and the supplemental light, and the color coordinate of the standard red primary light is between the excitation light and the supplemental light.
  • Other structures of the light source system 300 are the same as those of the light source system 100 and will not be described again.
  • supplemental light source 350 includes a laser or LED that is the light emitted by the laser or LED.
  • the supplemental light is irradiated onto the plurality of filter segments on the color wheel 330, or the fluorescence excited by the supplemental light is incident on the plurality of filter segments.
  • the excitation light illuminates different filter segments of the plurality of filter segments corresponding to the supplemental light.
  • the control device 350 controls the main light source 310 to be turned on such that the excitation light illuminates the first filter segment R1;
  • control device 350 controls the supplemental light source 340 to be turned on such that the supplemental light illuminates the second filter segment R2.
  • the control device 350 when the control device 350 detects that the excitation light changes according to the first trend, the control device 350 adjusts the supplemental light source 340 such that the supplemental light changes according to a trend opposite to the first trend.
  • the control device 350 adjusts the voltage and/or current of the supplementary light source 340, so that the brightness of the supplementary light increases. Therefore, the brightness of the mixed light of the red first light and the red second light remains unchanged, that is, the brightness correction is implemented to ensure that the brightness of the output image is normal.
  • the light source system 300 configures different main light sources 310 and supplemental light sources 340, and the color and brightness of the standard red primary color light are between the excitation light and the supplementary light.
  • the mixed light of the red first light and the red second light is made to coincide with the color and brightness of the standard red primary light, thereby ensuring the consistency of the light source system 300 to emit the red primary light.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Projection Apparatus (AREA)
  • Optical Filters (AREA)

Abstract

一种光源系统(100)及应用光源系统(100)的投影设备(10)，光源系统(100)包括主光源(110)及色轮(130)，主光源(110)用于发出激发光；色轮(130)用于接收激发光，色轮(130)包括同一颜色的多个滤光段，色轮(130)在驱动装置(120)的带动下周期性运动，使得多个滤光段出射光束在激发光所在的光路上形成与标准基色光的颜色及亮度一致的混合光。保证了光源系统(100)出射基色光的一致性，及投影系统(10)正常出射图像。

Description

光源系统及投影设备 技术领域
本发明涉及投影显示技术领域，尤其涉及一种光源系统及投影设备。
背景技术
本部分旨在为权利要求书中陈述的本发明的具体实施方式提供背景或上下文。此处的描述不因为包括在本部分中就承认是现有技术。
目前，空间光调制器在投影显示领域获得广泛应用，空间光调制器(SLM)一般包括LCD、LCOS、DMD等，单片式空间光调制器投影系统基于时序切换的基色光来实现彩色投影显示，这种系统结构简单，成本较低。
当R、G、B(或Y)照明光按时序照明空间光调制器时，空间光调制器根据接收图像信号对照明光进行调制，分别产生红光图像、绿光图像、蓝光图像(或黄光图像)，各基色光的图像时分复用合成一帧完整的图像。通常图像显示采用二倍速的频率显示，即照明光的刷新的频率为120Hz，图像帧频为60Hz，则每一帧图像中，各基色光图像显示两次。为了实现相同的效果，采用的措施是将滤光段分割，如将红光滤光段分为两段，驱动装置转动一圈，红光图像将刷新两次。但采用这种措施也需要有相应的牺牲，相对于原滤光轮，滤光段分割后，如果每段滤光段的透过率谱线不一致，将导致基色光的颜色、亮度不一致，或基色光图像的灰阶不连续的问题。为了保持与原滤光轮同样的滤光效果，每段滤光段的透过率谱需要保持一致，这将给滤光段加工增加难度，并增加成本。
发明内容
为解决现有技术多倍速显示频率导致的基色光颜色及亮度不一 致的技术问题，本发明提供一种基色光亮度一致性较好的光源系统及投影装置。
一种光源系统，包括：
主光源，用于发出激发光；及
色轮，用于接收所述激发光，所述色轮包括设置的同一颜色的多个滤光段，所述色轮在驱动装置的带动下周期性运动，使得所述多个滤光段出射光束在所述激发光所在的光路上形成与标准基色光的颜色及亮度一致的混合光。
一种投影设备，包括如上所述的光源系统。
本发明提供了所述光源系统及应用所述光源系统的投影设备，所述光源系统中的色轮包括出射同一颜色的多个滤光段，所述多个滤光段的混合光与所述标准基色光的颜色及亮度一致，保证了所述光源系统出射基色光的一致性，及所述投影系统正常出射图像。
附图说明
图1为本发明第一方式提供的投影设备的结构示意图。
图2为如图1所示的色轮的俯视结构示意图。
图3为如图1所示的色轮上位于激发光所在光路上的滤光段时序图。
图4为如图1所示的色轮的一种实施方式中第一滤光段与第二滤光段的通过率曲线图。
图5为本发明第二方式提供的投影设备的结构示意图。
主要元件符号说明
投影设备 10、20
光源系统 100、300
空间光调制器 200、400
主光源 110、310
驱动装置 120、320
色轮 130、330
第一滤光段 R1
第二滤光段 R2
第三滤光段 R3
第四滤光段 R4
第五滤光段 R5
蓝色滤光段 B1、B2
绿色滤光段 G1、G2
公差值 t
曲线 a、b、c
补充光源 340
控制装置 350
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
请参阅图1，为本发明较佳实施方式提供的投影设备10的结构示意图。投影设备10包括光源系统100及空间光调制器200，空间光调制器200用于对光源系统100出射的光束进行调制并出射图像光。
具体地，如图1所示，光源系统100包括主光源110、驱动装置120及色轮130。其中，主光源110用于发出激发光。色轮130用于接收所述激发光，并对所述激发光进行波长转换或修色。
主光源110可以包括用于产生激发光的发光体与对激发光进行匀光的匀光器件。
本实施例中，主光源110为红色光源，发出红色激发光。可以理解的是，主光源110不限于红色光源，主光源110也可以是紫外光源、蓝色光源或绿色光源等。本实施方式中，所述发光体为红色激光器，用于发出红色激光作为激发光。可以理解，所述发光体可以包括一个、两个激光器或红色激光器阵列，具体其激光器的数量可以依据实际需要选择。
本实施方式中，色轮130可以包括波长转换区及滤光区，所述波长转换区用于对入射的激发光进行波长转换从而得到受激光，所述滤光区用于对所述受激光进行修色，波长转换区以及滤光区呈环形分布。具体地，所述滤光区上的不同颜色的滤光段与所述波长转换区上的相同颜色的区段对应设置。在另一中可能的实施方式中，色轮130包括波长转换区及设置于波长转换区一侧的滤光层，所述滤光层覆盖于所述波长转换区的出光侧，并且所述滤光层的不同颜色的滤光段覆盖所述波长转换区上的相同颜色的区段，色轮也可以为仅包括滤光区。
如图1所示，色轮130在驱动装置120的带动下周期性运动。具体地，驱动装置120设置于色轮130表面的几何中心区域，带动色轮130围绕驱动装置120周期性高速旋转。使得色轮130上的不同滤光段周期性位于所述激发光所在的光路上，色轮130时序出射三种基色光。在一种实施方式中，驱动装置120设置于色轮130的一端，并驱动色轮130做周期性的运动，色轮130时序出射三种基色光。
请结合图1进一步参阅图2-图3，图2为如图1所示的色轮130的俯视结构示意图，图3为如图1所示的色轮上位于激发光所在光路上的滤光段时序图。
色轮130包括同一颜色的多个滤光段，所述多个滤光段可以间隔设置，也可以相邻设置。本实施方式中，色轮130包括间隔设置的第一滤光段R1和第二滤光段R2。第一滤光段R1与第二滤光段R2能够出射红色基色光，其中，第一滤光段R1出射红色第一光，第二滤光段R2出射红色第二光。如图2所示，所述滤光轮还包括两段能够出射蓝色基色光的蓝色滤光段B1、B2，及两段能够出射绿色基色光的绿色滤光段G1、G2。可以理解的是，在其他实施方式中，色轮130可以包括多于两段的同一颜色的滤光段，并不以此为限。
本实施例中，图像显示采用四倍速的频率显示，即图像帧频为60Hz，基色光的刷新的频率为240Hz。如图3所示，每一帧图像周期中，色轮130的旋转两圈。相同颜色的滤光段间隔设置，在色轮130的一个旋转周期中，色轮130出射两次红光、两次蓝光及两次绿光。 即每一帧图像周期中，每种颜色基色光刷新四次。相对于一个颜色仅设置一段滤光段的色轮，在相同的旋转速度的情况下，提高了不同颜色基色光的切换速度，从而大大降低了彩虹效应对投影图像质量的影响。可以理解的是，在其他实施方式中，色轮130可以在驱动装置120的驱动下提高各种颜色基色光的刷新频率，比如八倍速或更高频率的显示频率。
在一种实施方式中，第一滤光段R1与第二滤光段R2的通过率的公差等级相同，并且通过率无偏差。比如，第一滤光段R1与第二滤光段R2的通过率为50％对应波长的公差等级相同。一般地，偏差值t一般会大于5nm，公差越小，制造难度越大，成本越高。标准红色基色光能够从第一滤光段R1及第二滤光段R2出射。在其他实施方式中，滤光段不限两段，通过率的公差等级相同，并且通过率无偏差。本发明实施方式中，所述标准为DCI-P3色彩标准，其定义了各种基色光的颜色与亮度。可以理解的是，在其他实施方式中，可以选用Rec.709等其他投影设备领域应用的色彩标准。
所述激发光分时照射第一滤光段R1与第二滤光段R2，在所述激发光的颜色与亮度恒定不变的情况下，第一滤光段R1出射的红色第一光与第二滤光段R2出射的红色第二光为大致相同的红色光，保证了光源系统100出射红色基色光的一致性。所述大致相同是指所述红色第一光与所述红色第二光的颜色及亮度在一定误差范围相同。
可以理解的是，色轮130的两段绿色滤光段可以采用公差等级相同的绿色滤光段，所述两段蓝色滤光段也可以采用公差等级相同的蓝色滤光段，以保证色轮130出射三种基色光的出光一致性。但是在实际滤光段镀膜加工的过程中，难免存在偏差，使得滤光段的通过率曲线发生偏移，从而使得滤光段分为多个等级。
请参阅图4，为如图1所示的色轮130的一种实施方式中第一滤光段R1与第二滤光段R2的通过率曲线图。在本实施方式中，第一滤光段R1与第二滤光段R2为截止滤光段，通过率的公差等级不同，并且通过率偏差互补。
具体地，如图4所示，曲线a为第一滤光段R1的通过率曲线，曲线b为能够出射所述标准红色基色光的理想红色滤光段的通过率曲线，曲线c为第二滤光段R2的通过率曲线。
第一滤光段R1与第二滤光段R2为截止滤光段，滤光段通过率曲线中通过率为50％时对应的波长记为T50％。
其中，第一滤光段R1的T50％小于理想红色滤光段的T50％，第一滤光段R1的通过率偏差为-t，即，第一滤光段R1的T50％＝A-t。第二滤光段R2的T50％大于理想红色滤光段的T50％，第二滤光段R1的通过率偏差为+t，即，第二滤光段R2的T50％＝A+t。第一滤光段R1与第二滤光段R2的通过率所属的公差等级不同，通过率偏差互补，第一滤光段R1与第二滤光段R2的通过率偏差相加为0。
所述红色第一光覆盖的波长范围大于所述标准红色基色光，所述红色第一光相对于所述标准红色基色光亮度会增加，色纯度会变差；所述红色第二光覆盖的波长范围小于所述标准红色基色光，所述红色第二光相对于所述标准红色基色光亮度会减小，色纯度会提高。所述红色第一光与所述红色第二光分时入射至空间光调制器200。
所述红色第一光与所述红色第二光经混合后，根据同色异谱原理，可以得到与所述标准红色基色光颜色及亮度一致的混合光。
第一滤光段R1与第二滤光段R2的公差等级不同，通过率偏差互补。在一种实施方式中，第一滤光段R1的T50％＝A-2t；理想红色滤光段的T50％＝A；第二滤光段R2的T50％＝A+2t。在另一种实施方式中，色轮130包括至少两对滤光段，其中至少两对滤光段的通过率的偏差绝对值不同。比如，色轮130包括滤光段R1-R5，五个滤光段中包括两对通过率偏差绝对值不同的滤光段，即：第一滤光段R1的T50％＝A-2t，第二滤光段R2的T50％＝A+2t，第三滤光段R3的T50％＝A-t，第四滤光段R4的T50％＝A+t，第五滤光段R5的T50％＝A。即，色轮130包括通过率偏差绝对值分别为t及2t的两对滤光段，根据同色异谱原理，混合后的红色基色光与标准基色光的亮度及颜色一致。
可以理解的是，在一种实施方式中，同一颜色的一对滤光段的公差等级不同，通过率偏差趋势相反。比如，第一滤光段R1的T50％＝A-t，第二滤光段R2的T50％＝A+2t。在一种可能的实施方式中，根据同色异谱原理，可以通过第一滤光段R1及第二滤光段R2在色轮130上所占区域的相对比例，来控制混合红色基色光的颜色及亮度与标准红色基色光一致。
可以理解的是，色轮130可以采用相同的方式设置及两段蓝色滤光段B1、B2，以保证出射蓝色基色光的一致性。
进一步地，理想绿色滤光段能够出射标准绿色基色光，色轮130上的两个绿色滤光段G1、G2为带通滤光段，且中心频率的公差等级不同。在一种可能的实施方式中，绿色滤光段G1通过率曲线的中心波长大于所述理想绿色滤光段，绿色滤光段G2通过率曲线的中心波长小于所述理想绿色滤光段，并且绿色滤光段G1与绿色滤光段G2的通过率偏差互补。从而，色轮130出射两束绿色光，根据同色异谱原理也能够得到与所述标准绿色基色光颜色及亮度一致的混合光。
本实施方式中，根据同色异谱原理，色轮130通过将相同或不同通过率公差等级的第一滤光段R1与第二滤光段R2配合使用，使得出射的红色第一光与红色第二光的混合光与所述标准红色基色光的颜色及亮度一致，保证了光源系统100出射红色基色光的一致性。
请参阅图5，为本发明第二方式提供的光源系统300的结构示意图。本实施方式中，光源系统300还包括用于发出补充光的补充光源340，及用于控制主光源310及补充光源340的控制装置350。其中,主光源310与补充光源340邻近设置，使得色轮330在同一光路输出光束。主光源310与补充光源340为不同光源，即主光源310发出的激发光与补充光源340发出的补充光颜色及/或亮度不同，标准红色基色光的亮度及颜色均对应地介于所述激发光与所述补充光之间。具体地，标准红色基色光的波长介于所述激发光与所述补充光之间，并且，标准红色基色光的色坐标介于所述激发光与所述补充光之间。光源系统300的其他结构与光源系统100相同，不做赘述。
具体地，补充光源350包括激光器或LED，所述补充光为所述激光器或LED发出的光。所述补充光经过修色照射至色轮330上的多个滤光段，或所述补充光激发出的荧光入射至所述多个滤光段。
所述激发光与所述补充光对应照射所述多个滤光段中的不同滤光段。
当第一滤光段R1位于所述激发光所在的光路上时，控制装置350控制主光源310开启使得所述激发光照射第一滤光段R1；
当第二滤光段R2位于所述补充光所在的光路上时，控制装置350控制补充光源340开启使得所述补充光照射第二滤光段R2。
根据同色异谱原理，红色第一光与红色第二光混合后，也能够得到与标准红色基色光颜色及亮度一致的混合光。
在一种实施方式中，当控制装置350检测到所述激发光的按照第一趋势改变时，控制装置350调整补充光源340，使得所述补充光按照与所述第一趋势相反的趋势变化，以保证光源系统100出射基色光的一致性。比如，所述激发光亮度衰减时，所述红色第一光亮度也随着所述激发光衰减，控制装置350调整补充光源340的电压及/或电流，使得所述补充光的亮度升高，从而所述红色第一光与所述红色第二光的混合光的亮度保持不变，即实现亮度校正，以保证输出图像亮度正常。
本实施方式中，根据同色异谱原理，光源系统300通过配置不同的主光源310与补充光源340，所述标准红色基色光的颜色及亮度均介于所述激发光与所述补充光之间，使得出射的红色第一光与红色第二光的混合光与所述标准红色基色光的颜色及亮度一致，保证了光源系统300出射红色基色光的一致性。
以上仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

  1. 一种光源系统，其特征在于，包括：
    主光源，用于发出激发光；及
    色轮，用于接收所述激发光，所述色轮包括设置的同一颜色的多个滤光段，所述色轮在驱动装置的带动下周期性运动，使得所述多个滤光段出射光束在所述激发光所在的光路上形成与标准基色光的颜色及亮度一致的混合光。
  2. 如权利要求1所述的光源系统，其特征在于，所述多个滤光段的通过率的公差等级相同，并且通过率无偏差。
  3. 如权利要求1所述的光源系统，其特征在于，所述多个滤光段包括至少一对滤光段，其中每对对滤光段的通过率的公差等级不同，并且通过率偏差互补。
  4. 如权利要求3所述的光源系统，其特征在于，所述多个滤光段包括多对滤光段，其中至少两对滤光段的通过率的偏差绝对值不同。
  5. 如权利要求1所述的光源系统，其特征在于，所述光源系统还包括用于发出补充光的补充光源，所述标准基色光的颜色及亮度均对应地介于所述激发光与所述补充光之间；所述激发光与所述补充光对应照射所述多个滤光段中的不同滤光段。
  6. 如权利要求5所述的光源系统，其特征在于，所述主光源包括激光器，所述激发光包括所述激光器发出的激光。
  7. 如权利要求5所述的光源系统，其特征在于，所述补充光源包括激光器或LED，所述补充光为所述激光器或LED发出的光。
  8. 如权利要求7所述的光源系统，其特征在于，所述补充光经过修色照射至所述多个滤光段，或所述补充光激发出的荧光入射至所述多个滤光段。
  9. 如权利要求5所述的光源系统，其特征在于，所述光源系统还包括控制装置，当所述控制装置检测到所述激发光的按照第一趋势改变时，所述控制装置调整所述补充光源，使得所述补充光按照与所述 第一趋势相反的趋势变化。
  10. 一种投影设备，其特征在于，所述投影设备包括如权利要求1-9任意一项所述的光源系统。
PCT/CN2018/074744 2017-12-29 2018-01-31 光源系统及投影设备 Ceased WO2019127828A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711484114.8 2017-12-29
CN201711484114.8A CN109991799B (zh) 2017-12-29 2017-12-29 光源系统及投影设备

Publications (1)

Publication Number Publication Date
WO2019127828A1 true WO2019127828A1 (zh) 2019-07-04

Family

ID=67064970

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/074744 Ceased WO2019127828A1 (zh) 2017-12-29 2018-01-31 光源系统及投影设备

Country Status (2)

Country Link
CN (1) CN109991799B (zh)
WO (1) WO2019127828A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119157466B (zh) * 2023-12-22 2025-06-24 常州联影智融医疗科技有限公司 内窥镜色调校正方法、装置、调节设备和内窥镜系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006011087A (ja) * 2004-06-25 2006-01-12 Funai Electric Co Ltd プロジェクタ及びその制御方法
JP2006285029A (ja) * 2005-04-01 2006-10-19 Casio Comput Co Ltd カラーホイール装置及び投影装置
TW200905359A (en) * 2007-07-19 2009-02-01 Young Optics Inc Projection apparatus and color wheel module thereof
JP2016177060A (ja) * 2015-03-19 2016-10-06 株式会社リコー カラーフィルタ装置および画像投射装置
CN107037680A (zh) * 2017-05-08 2017-08-11 苏州佳世达光电有限公司 投影系统
US20170371150A1 (en) * 2016-06-27 2017-12-28 Carl Zeiss Ag Illumination device for a projector comprising a light modulator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050076883A (ko) * 2004-01-26 2005-07-29 엘지전자 주식회사 마이크로 디바이스를 이용한 디스플레이의 조명 광학계
JP4186905B2 (ja) * 2004-10-08 2008-11-26 松下電器産業株式会社 カラーホイールとそれを用いた投写型表示装置
CN101995627A (zh) * 2009-08-27 2011-03-30 上海华博数码科技有限公司 一种用于三维立体投影显示的带通色轮装置
CN101715140B (zh) * 2009-09-09 2011-08-03 苏州佳世达光电有限公司 投影动态调整方法及投影显示装置
CN102650813B (zh) * 2011-11-28 2015-02-04 深圳市光峰光电技术有限公司 光源系统、投影装置及其色平衡调整方法
CN104898363B (zh) * 2012-08-06 2018-07-24 深圳市光峰光电技术有限公司 发光装置及相关投影系统
US9664892B2 (en) * 2013-01-14 2017-05-30 Texas Instruments Incorporated Hybrid laser excited phosphor illumination apparatus and method
CN204595412U (zh) * 2014-12-08 2015-08-26 深圳市光峰光电技术有限公司 发光装置和投影系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006011087A (ja) * 2004-06-25 2006-01-12 Funai Electric Co Ltd プロジェクタ及びその制御方法
JP2006285029A (ja) * 2005-04-01 2006-10-19 Casio Comput Co Ltd カラーホイール装置及び投影装置
TW200905359A (en) * 2007-07-19 2009-02-01 Young Optics Inc Projection apparatus and color wheel module thereof
JP2016177060A (ja) * 2015-03-19 2016-10-06 株式会社リコー カラーフィルタ装置および画像投射装置
US20170371150A1 (en) * 2016-06-27 2017-12-28 Carl Zeiss Ag Illumination device for a projector comprising a light modulator
CN107037680A (zh) * 2017-05-08 2017-08-11 苏州佳世达光电有限公司 投影系统

Also Published As

Publication number Publication date
CN109991799B (zh) 2022-01-04
CN109991799A (zh) 2019-07-09

Similar Documents

Publication Publication Date Title
JP6979389B2 (ja) 光源システム及び投影表示装置
US10139713B2 (en) Light source system and projection system
US10134317B2 (en) Projection device, projection control system, and projection control method
US20170264870A1 (en) Display uniformity compensation method, optical modulation apparatus, signal processor, and projection system
CN105022208B (zh) 投影装置及其控制方法
CN206321932U (zh) 一种投影显示系统
JP6589141B2 (ja) 投写型映像表示装置
JP2006171722A (ja) カラーディスプレイ、マルチディスプレイシステム、調節装置、ならびにカラーディスプレイを設定および／または調節するための方法
US10939079B2 (en) Display apparatus
JP2010513946A (ja) 多重１次ｌｅｄ投影システム
US20200159102A1 (en) Phase modulator, lighting system, and projector
JP2016105122A (ja) 照明装置および映像表示装置
CN108227356A (zh) 一种投影显示系统
JP2017525183A (ja) 表示制御システム及び表示装置
CN110941134B (zh) 显示设备、显示设备的控制方法及计算机可读存储介质
US11953781B2 (en) Display apparatus that time-divisionally illuminates different pixel regions with diffracted color light beams
WO2019127828A1 (zh) 光源系统及投影设备
JP2010164645A (ja) 画像投写装置
EP3413130A1 (en) Projection system and image modulation method
US8368725B1 (en) Laser scrolling color scheme for projection display
WO2006124478A2 (en) Overlapping waveform utilization in projection systems and processes
JP2004286964A (ja) 色分離方法、色合成方法、及び表示装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18896208

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18896208

Country of ref document: EP

Kind code of ref document: A1