Optical imaging processing system

Patent metadata

Field	Value
Publication number	US-9588325-B2
Application number	US-201514880880-A
Country	US
Kind code	B2
Filing date	Oct 12, 2015
Priority date	Oct 14, 2014
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

The present invention provides an optical imaging processing system. The system includes a screen, an incident light source, and at least one optical transmission medium, where the optical transmission medium is disposed in an optical imaging path in which the incident light source is emergent and is projected to the screen; an light incident face of the optical transmission medium faces the incident light source, and an light exiting face of the optical transmission medium faces the screen, where at least one cavity is included between the light incident face and the light exiting face of the optical transmission medium, and a cross-section shape of the cavity is an isosceles trapezoid; and the cavity includes a light transmission area and a light blanking area used for object accommodation, and the optical imaging path bypasses the light blanking area and penetrates through the optical transmission medium through the light transmission area.

First claim

What is claimed is:

1. An optical imaging processing system, comprising:
an incident light source;
a screen; and
at least one optical transmission medium, wherein the at least one optical transmission medium is disposed in an optical imaging path in which the incident light source is emergent and is projected to the screen;
wherein an light incident face of the at least one optical transmission medium faces the incident light source, and a light exiting face of the at least one optical transmission medium faces the screen,
wherein at least one cavity is comprised between the light incident face and the light exiting face of the at least one optical transmission medium, and a cross-section shape of the at least one cavity is an isosceles trapezoid or is a hexagon formed by two isosceles trapezoids,
wherein the at least one cavity comprises a light transmission area and a light blanking area used for object accommodation, and the optical imaging path bypasses the light blanking area and penetrates through the at least one optical transmission medium through the light transmission area,
wherein the screen comprises a rear projection screen, and the incident light source comprises a projector,
wherein an acquiring aperture corresponding to an acquiring view angle of an image acquiring device is provided at a front end of the rear projection screen, and
wherein an optical rod is disposed between the image acquiring device and the front end of the rear projection screen, and the optical rod is used for reducing, on the basis of retaining the acquiring view angle of the image acquiring device unchanged, a size of the acquiring aperture provided at the front end of the rear projection screen.

2. The system according to claim 1 , wherein the at least one cavity comprises:
a first face used for incident light emitted by the incident light source to be incident;
a second face used for the incident light to reflect; and
a third face used for the incident light to be emergent,
wherein the first face and the third face form two waists of the isosceles trapezoid, respectively; and if an incident point of the incident light on the first face is a midpoint of one side waist of the isosceles trapezoid, then an emergent point of the incident light on the third face is a midpoint of the other side waist of the isosceles trapezoid.

3. The system according to claim 2 , wherein a coating film used for increasing a reflection coefficient is attached to the second face.

4. The system according to claim 2 , wherein an incident angle of the incident light on the first inclined face is less than an angle of total reflection.

5. The system according to claim 1 , wherein a cross-section shape of the light blanking area is an isosceles triangle or is a quadrangle formed by two isosceles triangles.

6. The system according to claim 5 , wherein the object accommodated in the light blanking area in the at least one cavity in the at least one optical transmission medium comprises at least one of a support rod of the screen and the image acquiring device.

7. An optical imaging processing system, comprising:
an incident light source;
a screen; and
at least one optical transmission medium, wherein the at least one optical transmission medium is disposed in an optical imaging path in which the incident light source is emergent and is projected to the screen;
wherein an light incident face of the at least one optical transmission medium faces the incident light source, and a light exiting face of the at least one optical transmission medium faces the screen,
wherein at least one cavity is comprised between the light incident face and the light exiting face of the at least one optical transmission medium, and a cross-section shape of the at least one cavity is an isosceles trapezoid or is a hexagon formed by two isosceles trapezoids,
wherein the at least one cavity comprises a light transmission area and a light blanking area used for object accommodation, and the optical imaging path bypasses the light blanking area and penetrates through the at least one optical transmission medium through the light transmission area, and
wherein the screen comprises a rear projection screen, wherein the incident light source comprises a projector, and wherein the projector comprises a processor and an emitter,
wherein the processor is used for: determining a target area and a roll-over shaft of an image, wherein the target area is an area in the image in which the incident light transmitted through the at least one cavity is projected, and the roll-over shaft is a straight line in the target area formed by the projection of the incident light passing through the midpoint of a waist of the isosceles trapezoid; and, performing roll-over processing on the target area along the roll-over shaft, to obtain an incident image after the roll-over processing; and
wherein the emitter is used for: emitting incident light, so as to project, by using the incident light, the image after the roll-over processing.

8. The system according to claim 7 , wherein the at least one cavity comprises:
a first face used for incident light emitted by the incident light source to be incident;
a second face used for the incident light to reflect; and
a third face used for the incident light to be emergent,
wherein the first face and the third face form two waists of the isosceles trapezoid, respectively; and if an incident point of the incident light on the first face is a midpoint of one side waist of the isosceles trapezoid, then an emergent point of the incident light on the third face is a midpoint of the other side waist of the isosceles trapezoid.

9. The system according to claim 8 , wherein a coating film used for increasing a reflection coefficient is attached to the second face.

10. The system according to claim 8 , wherein an incident angle of the incident light on the first inclined face is less than an angle of total reflection.

11. The system according to claim 7 , wherein a cross-section shape of the light blanking area is an isosceles triangle or is a quadrangle formed by two isosceles triangles.

12. The system according to claim 11 , wherein the object accommodated in the light blanking area in the at least one cavity in the at least one optical transmission medium comprises at least one of a support rod of the screen and an image acquiring device.

Assignees

• Huawei Tech Co Ltd
• Cambridge Entpr Ltd

Inventors

• Robertson Brian
• Ll Kun
• Chu Daping
• Yao Jun

Classifications

• G03B21/56 Primary

  Projection screens · CPC title

• G02B17/086 Primary

  wherein the system is made of a single block of optical material, e.g. solid catadioptric systems · CPC title

• H04N9/31

  Projection devices for colour picture display {, e.g. using electronic spatial light modulators [ESLM]} · CPC title

• G03B17/54

  with projector · CPC title

• G03B21/28

  Reflectors in projection beam {(in illumination beam G03B21/2066)} · CPC title