Projection device

• US 9,918,056 B2
• Filed: 12/21/2015
• Issued: 03/13/2018
• Est. Priority Date: 03/31/2006
• Status: Active Grant

• Current Assignee: Nikon Corporation
• Original Assignee: Nikon Corporation
• Inventors: Nozaki, Hirotake, Fujinawa, Nobuhiro
• Primary Examiner(s): Breval, Elmito
• Assistant Examiner(s): APENTENG, JESSICA MCMILLAN
• Application Number:
  US14/977,515
• Publication Number:
  US 20160191874A1
• Time in Patent Office: 813 Days
• Field of Search: 362 19, 362296, 396430
• CPC Class Codes: G02B 27/283 used for beam splitting or combining
• CPC Class Codes: G03B 17/54 with projector
• CPC Class Codes: G03B 21/16 Cooling; Preventing overheating
• CPC Class Codes: H04N 23/00 Cameras or camera modules comprising electronic image sensors; Control thereof
• CPC Class Codes: H04N 9/3102 using two-dimensional electronic spatial light modulators micromechanical modulators as such G02B26/0833; liquid crystal modulators as such G02F1/13
• CPC Class Codes: H04N 9/3108 by using a single electronic spatial light modulator
• CPC Class Codes: H04N 9/3141 Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14
• CPC Class Codes: H04N 9/3144 Cooling systems cooling of liquid crystal cells in general G02F1/133382; cooling of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/16
• CPC Class Codes: H04N 9/315 Modulator illumination systems general applications of lighting devices F21V; general optical systems G02B; lamp houses for projectors not peculiar to the presence of an electronic spatial light modulator G03B21/20
• CPC Class Codes: H04N 9/3176 wherein the projection device is incorporated in a camera details of cameras adapted for combination with a projector not peculiar to the presence of an electronic spatial light modulator G03B17/54
• CPC Class Codes: H04N 9/3197 using light modulating optical valves

Abstract

A projection device includes: a plate shaped member that is thermally conductive; a light emitting element that is disposed upon the plate shaped member and emits light; a bending member that bends light from the light emitting element into an orientation parallel to the plate shaped member; a modulation element that modulates light bent by the bending member; and a polarized light separation element that bends light modulated by the modulation element into an orientation going away from the plate shaped member.

Claims

1. An electronic device, comprising:

a projector that includes a projection optical system and projects a projection image;

an image sensor that captures a photography image; and

an illumination unit that includes an illumination optical system which is different from the projection optical system and emits an illumination light by light from a light source when the image sensor captures the photography image, wherein;

the illumination unit does not emit the illumination light when the projector projects the projection image; and

further comprising a processor that controls the projector and the illumination unit, wherein;

the processor controls the projector differently between a case in which the projection image is projected onto a placing surface on which the electronic device is placed and a case in which the projection image is projected onto a surface other than the placing surface.

2. The electronic device according to claim 1, wherein:

the projector projects the projection image based on the light from the light source.

3. The electronic device according to claim 2, wherein:

the light source is a part of the electronic device.

4. The electronic device according to claim 1, wherein:

the processor controls the illumination unit so that the illumination unit does not emit the illumination light when the projector projects the projection image.

5. The electronic device according to claim 1, wherein:

the processor controls deforming the projection image differently between a case in which the projection image is projected onto a placing surface on which the electronic device is placed and a case in which the projection image is projected onto a surface other than the placing surface.

6. The electronic device according to claim 1, further comprising:

an attitude sensor that detects an attitude of the electronic device, wherein;

the processor controls the projector based on the attitude of the electronic device detected by the attitude sensor.

7. The electronic device according to claim 1, further comprising:

an attitude sensor that detects an attitude of the electronic device, wherein;

the processor determines whether the projection image is projected onto the placing surface or the projection image is projected onto a surface other than the placing surface, based on a detection by the attitude sensor.

8. The electronic device according to claim 1, wherein:

the processor detects a brightness of a projection surface onto which the projection image is projected, based on the photography image captured by the image sensor.

9. The electronic device according to claim 8, wherein:

the projector projects the projection image based on the light from the light source; and

the processor controls the light source based on the brightness of the projection surface.

10. The electronic device according to claim 8, wherein:

the processor performs stopping of projection by the projector based on the brightness of the projection surface.

11. The electronic device according to claim 10, further comprising:

a display that displays information related to the stopping of the projection by the projector controlled by the processor.

12. The electronic device according to claim 1, further comprising:

a temperature sensor that detects a temperature of surroundings of the projector, wherein;

the processor controls the projector based on the temperature detected by the temperature sensor.

13. The electronic device according to claim 12, wherein:

the processor performs stopping of projection by the projector.

14. The electronic device according to claim 13, further comprising:

a display that displays information related to the stopping of the projection by the projector controlled by the processor.

15. The electronic device according to claim 1, further comprising:

a display that displays information, wherein;

the processor controls the display to turn off when the projector projects the projection image.

16. The electronic device according to claim 1, further comprising:

an operation unit that changes over between projecting the projection image by the projector and capturing the photography image by the image sensor.

17. An electronic device, comprising:

a projector that projects a projection image;

a processor that controls the projector differently between a case in which the projection image is projected onto a placing surface on which the electronic device is placed and a case in which the projection image is projected onto a surface other than the placing surface.

18. The electronic device according to claim 17, wherein:

the processor controls deforming the projection image differently between a case in which the projection image is projected onto a placing surface on which the electronic device is placed and a case in which the projection image is projected onto a surface other than the placing surface.

19. The electronic device according to claim 17, further comprising:

an attitude sensor that detects an attitude of the electronic device, wherein;

the processor determines whether the projection image is projected onto the placing surface or the projection image is projected onto a surface other than the placing surface, based on a detection by the attitude sensor.