Projection apparatus and array lens module

• US 8,807,759 B2
• Filed: 03/27/2012
• Issued: 08/19/2014
• Est. Priority Date: 06/30/2011
• Status: Expired due to Fees

• Current Assignee: Coretronic Corporation
• Original Assignee: Coretronic Corporation
• Inventors: Lin, Shiuan-Ting
• Primary Examiner(s): Dowling, William C
• Application Number:
  US13/430,716
• Publication Number:
  US 20130003024A1
• Time in Patent Office: 875 Days
• Field of Search: 353/38, 353/100, 353/101, 353/119, 362326-340, 362307-309
• US Class Current: 353/38
• CPC Class Codes: G02B 27/0961 Lens arrays lens arrays per se G02B3/0006
• CPC Class Codes: G03B 21/208 Homogenising, shaping of the illumination light

Abstract

A projection apparatus includes an optical engine base, a light source, a light valve, a projection lens, and an array lens module. The light source, the light valve, and the projection lens are installed to the optical engine base. The array lens module includes a frame body fixed to the optical engine base, a first array lens, and a second array lens. One of the first array lens and the frame body has a first positioning hole while the other one has a first positioning pillar inserted into the first positioning hole. One of the second array lens and the frame body has a second positioning hole while the other one has a second positioning pillar inserted into the second positioning hole. A light beam emitted by the light source passes through the first array lens, the second array lens, and the light valve sequentially to reach the projection lens.

Claims

1. A projection apparatus, comprising:

an optical engine base;

a light source, assembled to the optical engine base;

a light valve, assembled to the optical engine base;

a projection lens, assembled to the optical engine base; and

an array lens module, comprising;

a frame body, fixed to the optical engine base, having at least one first positioning hole and at least one second positioning hole;

a first array lens, having at least one first positioning pillar, the first positioning pillar being inserted into the first positioning hole of the frame body to fix the first array lens to the frame body; and

a second array lens, having at least one second positioning pillar, the second positioning pillar being inserted into the second positioning hole of the frame body to fix the second array lens to the frame body, wherein a light beam emitted by the light source passes through the first array lens, the second array lens, and the light valve sequentially to reach the projection lens.

2. The projection apparatus as claimed in claim 1, wherein the first array lens and the second array lens are located at respective sides of the frame body, the frame body has an opening and the light beam reaches the second array lens from the first array lens via the opening.

3. The projection apparatus as claimed in claim 1, wherein the first array lens and the second array lens have a space therebetween.

4. The projection apparatus as claimed in claim 1, wherein two of each of the first positioning hole, the second positioning hole, the first positioning pillar, and the second positioning pillar are present in the projection apparatus.

5. The projection apparatus as claimed in claim 1, wherein one of the optical engine base and the frame body has at least one third positioning hole and the other one of the optical engine base and the frame body has at least one third positioning pillar, the third positioning pillar is inserted into the third positioning hole to fix the frame body to the optical engine base.

6. The projection apparatus as claimed in claim 5, wherein two of each of the third positioning hole and the third positioning pillar are present in the projection apparatus.

7. The projection apparatus as claimed in claim 1, wherein the optical engine base has two limit grooves and two respective sides of the frame body are wedged into the two limit grooves respectively.

8. An array lens module adapted to a projection apparatus, the projection apparatus comprising an optical engine base, a light source, a light valve, and a projection lens, the light source, the light valve, and the projection lens being assembled to the optical engine base, the array lens module comprises:

a frame body, fixed to the optical engine base, having at least one first positioning hole and at least one second positioning hole;

a first array lens, having at least one first positioning pillar, the first positioning pillar being inserted into the first positioning hole of the frame body to fix the first array lens to the frame body; and

a second array lens, having at least one second positioning pillar, the second positioning pillar being inserted into the second positioning hole of the frame body to fix the second array lens to the frame body, wherein a light beam emitted by the light source passes through the first array lens, the second array lens, and the light valve sequentially to reach the projection lens.

9. The array lens module as claimed in claim 8, wherein the first array lens and the second array lens are located at respective sides of the frame body, the frame body has an opening and the light beam reaches the second array lens from the first array lens via the opening.

10. The array lens module as claimed in claim 8, wherein the first array lens and the second array lens have a space therebetween.

11. The array lens module as claimed in claim 8, wherein two of each of the first positioning hole, the second positioning hole, the first positioning pillar, and the second positioning pillar are present in the array lens module.

12. The array lens module as claimed in claim 8, wherein one of the optical engine base and the frame body has at least one third positioning hole and the other one of the optical engine base and the frame body has at least one third positioning pillar, the third positioning pillar is inserted into the third positioning hole to fix the frame body to the optical engine base.

13. The array lens module as claimed in claim 12, wherein two of each of the third positioning hole and the third positioning pillar are present in the array lens module.

14. The array lens module as claimed in claim 8, wherein the optical engine base has two limit grooves and two respective sides of the frame body are wedged into the two limit grooves respectively.