ADJUSTING STRUCTURE OF REFLECTOR AND PROJECTING APPARATUS

• US 20190361326A1
• Filed: 04/23/2019
• Published: 11/28/2019
• Est. Priority Date: 05/22/2018
• Status: Active Grant

• Current Assignee: Coretronic Corporation
• Original Assignee: Coretronic Corporation
• Inventors: Liu, Ming-Chen, Tseng, Tsan-Fu, Wu, Liang-Wei
• Granted Patent: US 10,642,134 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 27/0977 Reflective elements
• CPC Class Codes: G02B 7/022 lens and mount having complementary engagement means, e.g. screw/thread
• CPC Class Codes: G03B 21/142 Adjusting of projection optics
• CPC Class Codes: G03B 21/145 Housing details, e.g. position adjustments thereof
• CPC Class Codes: G03B 21/2066 Reflectors in illumination beam in projection beam G03B21/28

Abstract

An adjusting structure of reflector includes a base, a pivoting component, a reflector, a first adjusting screw and a second adjusting screw. The pivoting component is connected to the base, and the base is pivoted to a housing by using the pivoting component, and has freedoms of motion rotating around a first axial direction and a second axial direction perpendicular to the first axial direction. The reflector is disposed on the base. The first adjusting screw and the second adjusting screw are configured to be penetrated the housing and connected to the base. An adjusting direction of the first adjusting screw and the first axial direction may intersect with each other. The first adjusting screw and the second adjusting screw are located at the same side of the base. A projecting apparatus comprising the above adjusting structure of reflector is also provided.

Claims

1. An adjusting structure of reflector, comprising:

a base;

a pivoting component, connected to the base, wherein the base is pivoted to a housing by using the pivoting component, and has freedoms of motion rotating around a first axial direction and a second axial direction perpendicular to the first axial direction;

a reflector, disposed on the base;

a first adjusting screw, configured to be penetrated the housing and connected to the base, wherein an adjusting direction of the first adjusting screw and the first axial direction intersect with each other; and

a second adjusting screw, configured to be penetrated the housing and connected to the base, wherein the first adjusting screw and the second adjusting screw are located at the same side of the base.

2. The adjusting structure of reflector of claim 1, wherein the base comprises two opposite side edges, and the pivoting component is located between the two side edges, wherein a distance between the pivoting component and one of the two side edges is less than a distance between the pivoting component and the other one of the two side edges.

3. The adjusting structure of reflector of claim 1, wherein the adjusting direction of the first adjusting screw and an adjusting direction of the second adjusting screw intersect with the second axis respectively at one point, and the first axis and the second axis are perpendicular to each other.

4. The adjusting structure of reflector of claim 1, further comprising at least one elastic component connected to the base, wherein the at least one elastic component and the reflector are respectively located at two opposite sides of the base, the at least one elastic component abuts against the housing, and the first adjusting screw and the second adjusting screw are respectively located at two opposite sides of the at least one elastic component.

5. The adjusting structure of reflector of claim 4, wherein the least one elastic component respectively comprises an abutting part configured to abut against the housing, wherein the first adjusting screw and the abutting part are located on a second axis.

6. The adjusting structure of reflector of claim 4, wherein the base comprises two opposite side edges, and the at least one elastic component respectively comprises an abutting part configured to abut against the housing, wherein the pivoting component is connected to one of the two side edges, and a distance between the abutting part and one of the two side edges is greater than a distance between the abutting part and the other one of the two side edges.

7. The adjusting structure of reflector of claim 4, wherein the base comprises:

a first holding part, wherein the pivoting component is connected to the first holding part, the first holding part comprises a first surface and a second surface opposite to each other, the reflector abuts against the first surface, and the first adjusting screw and the second adjusting screw are connected to the second surface; and

a second holding part, fixed on the second surface, wherein the least one elastic component is connected to the second holding part.

8. The adjusting structure of reflector of claim 7, wherein the first holding part comprises a holding portion protruding out of the first surface, and the reflector abuts against the holding portion.

9. The adjusting structure of reflector of claim 7, wherein the second holding part is provided with a first limiting portion, a second limiting portion and a third limiting portion, the second limiting portion and the third limiting portion are respectively located at two opposite sides of the first limiting portion, the first limiting portion abuts against a first side edge of the first holding part, and the second limiting portion and the third limiting portion respectively extend to pass over a second side edge and a third side edge of the first holding part.

10. The adjusting structure of reflector of claim 9, wherein the reflector comprises a reflecting surface opposite to the first surface, wherein the second limiting portion extends to pass over one side of the reflector and is buckled against the reflecting surface, and the third limiting portion extends to pass over the other side of the reflector and is buckled against the reflecting surface.

11. The adjusting structure of reflector of claim 4, wherein the least one elastic component comprises two parallel elastic parts connected to the base, wherein the two elastic parts and the reflector are respectively located at the two opposite sides of the base.

12. A projecting apparatus, comprising:

a housing, a light source module, a reflector adjusting structure, an imaging module and a projection lens module,

wherein the light source module is disposed on the housing, and is configured to emit an illuminating beam;

the adjusting structure of reflector is disposed on the housing, wherein the adjusting structure of reflector comprises a base, a pivoting component, a reflector, a first adjusting screw and a second adjusting screw, wherein

the pivoting component is connected to the base, and the base is pivoted to the housing by using the pivoting component, and has freedoms of motion rotating around a first axial direction and a second axial direction perpendicular to the first axial direction;

the reflector is disposed on the base and located on a transmission path of the illuminating beam, and is configured to deflect the illuminating beam;

the first adjusting screw is configured to be penetrated the housing and connected to the base, and an adjusting direction of the first adjusting screw and the first axial direction intersect with each other; and

the second adjusting screw is configured to be penetrated the housing and connected to the base, and the first adjusting screw and the second adjusting screw are located at the same side of the base;

the imaging module is disposed in the housing, and is configured to modulate the illuminating beam deflected by the reflector into an image beam; and

the projection lens module is disposed on the housing, and is configured to receive and projecting the image beam.

13. The projecting apparatus of claim 12, wherein the base comprises two opposite side edges, and the pivoting component is located between the two side edges, wherein a distance between the pivoting component and one of the two side edges is less than a distance between the pivoting component and the other one of the two side edges.

14. The projecting apparatus of claim 12, wherein the adjusting direction of the first adjusting screw and an adjusting direction of the second adjusting screw intersect with the second axis respectively at one point, and the first axis and the second axis are perpendicular to each other.

15. The projecting apparatus of claim 12, wherein the projecting apparatus also comprises at least one elastic component connected to the base, wherein the at least one elastic component and the reflector are respectively located at two opposite sides of the base, the at least one elastic component abuts against the housing, and the first adjusting screw and the second adjusting screw are respectively located at two opposite sides of the at least one elastic component.

16. The projecting apparatus of claim 15, wherein the at least one elastic component respectively comprises an abutting part configured to abut against the housing, wherein the first adjusting screw and the abutting part are located on a second axis.

17. The projecting apparatus of claim 15, wherein the base comprises two opposite side edges, and the at least one elastic component respectively comprises an abutting part configured to abut against the housing, wherein the pivoting component is connected to one of the two side edges, and a distance between the abutting part and one of the two side edges is greater than a distance between the abutting part and the other one of the two side edges.

18. The projecting apparatus of claim 15, wherein the base comprises:

a first holding part, wherein the pivoting component is connected to the first holding part, the first holding part comprises a first surface and a second surface opposite to each other, the reflector abuts against the first surface, and the first adjusting screw and the second adjusting screw are connected to the second surface; and

a second holding part, fixed on the second surface, wherein the least one elastic component is connected to the second holding part.

19. The projecting apparatus of claim 18, wherein the first holding part comprises a holding portion, protruding out of the first surface, and the reflector abuts against the holding portion.

20. The projecting apparatus of claim 18, wherein the second holding part is provided with a first limiting portion, a second limiting portion and a third limiting portion, the second limiting portion and the third limiting portion are respectively located at two opposite sides of the first limiting portion, the first limiting portion abuts against a first side edge of the first holding part, and the second limiting portion and the third limiting portion respectively extend to pass over a second side edge and a third side edge of the first holding part.

21. The projecting apparatus of claim 20, wherein the reflector comprises a reflecting surface opposite to the first surface, wherein the second limiting portion extends to pass over one side of the reflector and is buckled against the reflecting surface, and the third limiting portion extends to pass over the other side of the reflector and is buckled against the reflecting surface.

22. The projecting apparatus of claim 15, wherein the at least one elastic component comprises two parallel elastic parts connected to the base, wherein the at least one elastic component and the reflector are respectively located at the two opposite sides of the base.