Dual-color laser light source

• US 10,197,901 B2
• Filed: 02/13/2018
• Issued: 02/05/2019
• Est. Priority Date: 06/03/2015
• Status: Active Grant

• Current Assignee: Hisense Co., Ltd. (Qingdao Huatong State-Owned Capital Operation (Group) Co., Ltd.), Hisense International Company Limited (Qingdao Huatong State-Owned Capital Operation (Group) Co., Ltd.), Hisense USA Corporation (Qingdao Huatong State-Owned Capital Operation (Group) Co., Ltd.)
• Original Assignee: Hisense Co., Ltd. (Qingdao Huatong State-Owned Capital Operation (Group) Co., Ltd.), Hisense International Company Limited (Qingdao Huatong State-Owned Capital Operation (Group) Co., Ltd.), Hisense USA Corporation (Qingdao Huatong State-Owned Capital Operation (Group) Co., Ltd.)
• Inventors: Tian, Youliang, Liu, Xianrong, Li, Wei
• Primary Examiner(s): Dowling, William C
• Application Number:
  US15/895,803
• Publication Number:
  US 20180224732A1
• Time in Patent Office: 357 Days
• CPC Class Codes: G02B 26/008 in the form of devices for effecting sequential colour changes, e.g. colour wheels
• CPC Class Codes: G02B 27/1006 for splitting or combining different wavelengths G02B27/1086, G02B27/141 take precedence
• CPC Class Codes: G02B 27/143 using macroscopically faceted or segmented reflective surfaces
• CPC Class Codes: G02B 27/48 Laser speckle optics
• CPC Class Codes: G02B 5/0263 with positional variation of the diffusing properties, e.g. gradient or patterned diffuser
• CPC Class Codes: G02B 5/0278 used in transmission
• CPC Class Codes: G02B 5/0294 adapted to provide an additional optical effect, e.g. anti-reflection or filter
• CPC Class Codes: G03B 21/20 Lamp housings
• CPC Class Codes: G03B 21/2013 Plural light sources
• CPC Class Codes: G03B 21/204 using secondary light emission, e.g. luminescence or fluorescence using different colours G03B33/00; if related to video signals H04N9/3197
• CPC Class Codes: G03B 21/2066 Reflectors in illumination beam in projection beam G03B21/28
• CPC Class Codes: G03B 21/208 Homogenising, shaping of the illumination light
• CPC Class Codes: G03B 33/08 Sequential recording or projection G03B33/02, G03B33/04, G03B33/06 take precedence
• CPC Class Codes: H04N 9/3114 by using a sequential colour filter producing one colour at a time
• CPC Class Codes: H04N 9/3152 for shaping the light beam beam shaping per se G02B27/09
• CPC Class Codes: H04N 9/3158 for controlling the spectrum
• CPC Class Codes: H04N 9/3161 using laser light sources using laser beams scanning the display screen H04N9/3129
• CPC Class Codes: H04N 9/3164 using multiple light sources

Abstract

Methods and apparatuses that provide a technical solution for handling a microphone operation request from more than one application is disclosed. The technical solution for processing data obtained by a microphone of a terminal device includes receiving an audio recording start command sent by a second application running on the terminal while the microphone is being used by a first application running on the terminal. The technical solution further includes assigning an unoccupied data receiving port to the second application, acquiring and broadcasting audio recording data collected by the microphone through a data sending port, receiving the audio recording data by the assigned data receiving port, and sending the audio recording data to the second application by the assigned data receiving port.

Claims

1. A dual-color laser light source, comprising:

a blue laser device configured to emit a blue laser light;

a red laser device configured to emit a red laser light;

a fluorescent wheel including a surface coated with green fluorescent powder excitable by the blue laser light to emit a green fluorescent light; and

a speckle dissipation system comprising;

a first diffusion element fixedly disposed in a first beam shaping optical path of the blue laser light and a second beam shaping optical path of the red laser light, wherein the first diffusion element is configured to diffuse the blue laser light and the red laser light; and

a second diffusion element controlled to rotate and disposed in front of the blue laser light, the red laser light, and the green fluorescent light incidenting into a light bar, wherein the second diffusion element is configured to transmit at least the blue laser light and the red laser light in time sequence and output the blue laser light and the red laser light.

2. The dual-color laser light source according to claim 1, wherein the first diffusion element is a first diffusion plate.

3. The dual-color laser light source according to claim 1, wherein the first diffusion element is disposed at a rear end of the first beam shaping optical path and a rear end of the second beam shaping optical path;

wherein the blue laser light incidents into the fluorescent wheel after transmitting the first diffusion element; and

wherein the red laser light incidents into a light merging component after transmitting the first diffusion element.

4. The dual-color laser light source according to claim 1, wherein the second diffusion element comprises:

a diffusion zone configured to transmit the blue laser light and the red laser light; and

a non-diffusion zone configured to transmit the green fluorescent.

5. The dual-color laser light source according to claim 4, wherein the diffusion zone of the second diffusion element is comprised of a diffusion material and coated with diffusers on the surface thereof.

6. The dual-color laser light source according to claim 4, wherein the non-diffusion zone is a green color filter plate or is of transparent material, and is used to transmit the green fluorescent light which will incident into the light bar.

7. The dual-color laser light source according to claim 4, wherein the diffusion zone of the second diffusion element comprises a blue laser light diffusion zone and a red laser light diffusion zone, wherein both the blue laser light diffusion zone and the red laser light diffusion zone are configured to transmit the blue laser light and the red laser light in time sequence when the second diffusion element rotates.

8. The dual-color laser light source according to claim 7, wherein the red laser light diffusion zone comprises multiple diffusion subzones, and the multiple diffusion subzones have different angles of diffusion for the red laser light.

9. The dual-color laser light source according to claim 8, wherein among the multiple diffusion subzones, the angles of diffusion for the red laser light of the diffusion subzones in the middle are greater than the angles of diffusion for the red laser light of the diffusion subzones on both sides.

10. The dual-color laser light source according to claim 8, wherein among the multiple diffusion subzones, a middle area of the diffusion subzones is bigger than either side areas of the diffusion subzones.

11. The dual-color laser light source according to claim 1, wherein before reaching the fluorescence wheel, the laser lights emitted by the laser devices pass a beam shaping device, and the beam shaping device comprises the first diffusion element.

12. The dual-color laser light source according to claim 11, wherein the beam shaping device comprises one reflector element, one convex lens and one concave lens, and one first diffusion element;

wherein one laser light of the blue and red laser lights is reflected by the reflector element and the other laser light is transmitted by the reflector element; and

wherein the blue laser light and the red laser light reach the first diffusion element after passing the reflector element, the convex lens, and the concave lens in order.

13. The dual-color laser light source according to claim 11, wherein, the beam shaping device comprises one reflector element, two convex lens, and two concave lens, and two first diffusion elements;

wherein one convex lens and one concave lens, and one first diffusion element are provided corresponding to the blue laser device, the other convex lens and the other concave lens, and the other first diffusion element are provided corresponding to the red laser device;

wherein the blue laser light and the red laser light reach the reflector element after passing its convex lens and concave lens, and its first diffusion element respectively; and

wherein one laser light of the blue and red laser lights is reflected by the reflector element and the other laser light is transmitted by the reflector element.

14. The dual-color laser light source according to claim 1, wherein the first diffusion element comprises two diffusion elements fixed arranged separately;

and

wherein the blue laser light passes one of the first diffusion elements before reaching the fluorescence wheel, and the red laser light passes the other first diffusion element and then reach the second diffusion element.

15. A projection display device, comprising:

a projection screen;

a light machine;

a lens; and

a dual-color laser light source configured to provide illumination for the light machine, and images are projected to the projection screen by the lens for displaying, and wherein the dual-color laser light source comprises;

a blue laser device configured to emit a blue laser light;

a red laser device configured to emit a red laser light;

a fluorescent wheel including a surface coated with green fluorescent powder excitable by the blue laser light to emit a green fluorescent light; and

a speckle dissipation system comprising;

a first diffusion element fixedly disposed in a first beam shaping optical path of the blue laser light and a second beam shaping optical path of the red laser light, wherein the first diffusion element is configured to diffuse the blue laser light and the red laser light; and

a second diffusion element controlled to rotate and disposed in front of the blue laser light, the red laser light, and the green fluorescent light incidenting into a light bar, wherein the second diffusion element is configured to transmit at least the blue laser light and the red laser light in time sequence and output the blue laser light and the red laser light.

16. A projection display device, comprising:

a blue laser emitter configured to emit a blue laser light;

a red laser emitter configured to emit a red laser light;

a first diffusion element fixedly disposed in a first optical path of the blue laser light and a second optical path of the red laser light and configured to direct the blue laser light and the red laser light to a light merging component;

wherein the light merging component is configured to transfer the blue laser light to a fluorescent wheel and transfer the red laser light to a second diffusion element;

wherein the fluorescent wheel is configured to receive the blue laser light and emit a green fluorescent light towards the second diffusion element through the light merging component; and

wherein the second diffusion element is controlled to rotate and comprises;

a non-diffusion zone configured to transmit the green fluorescent light; and

a diffusion zone configured to transmit the red laser light outputted by the light merging component.

17. The projection display device according to claim 16, wherein the first diffusion element comprises two diffusion plates;

wherein a first diffusion plate is fixedly disposed in the red laser light optical path located between the red laser emitter and the light merging component; and

wherein a second diffusion plate is fixedly disposed in the blue laser light optical path located between the blue laser emitter and the light merging component.

18. The projection display device according to claim 16, wherein the diffusion zone of the second diffusion element comprises a blue laser light diffusion zone configured to transmit the blue laser light and a red laser light diffusion zone configured to transmit the red laser light;

wherein the blue laser light diffusion zone is comprised of a blue color filter plate provided with blue diffusion particles;

wherein the red laser light diffusion zone is comprised of a red color filter plate provided with red diffusion particles; and

wherein the non-diffusion zone is a green color filter plate.

19. The projection display device according to claim 16, wherein a portion of the blue laser light incidenting into the fluorescent wheel is reflected back into the light merging component and then transmitted to the second diffusion element through the light merging component;

and,

the second diffusion element is also configured to transmit the blue laser light outputted by the light merging component.

20. The projection display device according to claim 16, further comprising a light conduit and an image-forming component;

wherein the light conduit is disposed in the light emitting direction of the second diffusion element; and

wherein the image-forming component is configured to form a projected image based on an image been inputted and the light emitted by the light conduit.