TW594107B - Optically integrated device - Google Patents

Abstract

The present invention relates to an optically integrated device, and more particularly, to an optically integrated device with low light loss. A color filter is attached to an optical integrator to filter through a portion of the light, and reflect the other portion of the light back to the optical integrator. The optically integrated device recycles the reflected light inside the optical integrator to prevent light loss.

Description

594107 V. Description of the invention (l) 1. [Technical field to which the invention belongs] The present invention relates to a light-collecting device, and particularly to a light-collecting device that improves the utilization rate of light. I. [Previous Technology] Technological Progress ’Various optical systems are continuously developing. And how to improve the utilization rate of the light source, so as to achieve the same volume can increase the brightness and reduce the power consumption rate, etc., are the focus of the development of optical systems. Taking the Digital Light Processing (DLP) image processing device developed in recent years as an example, it is an image processing device that combines the advantages of high light utilization and small volume. The optical collector 3 (0ptical Integrator) installed in the digital optical processing image processing device as shown in the first figure is a columnar body with four sides and two end faces; The optical port 5 has a light emitting surface 9 on the other end surface and a reflecting portion 7 on the four side surfaces. The light L emitted from the light source 1 passes through the light collector 3 and directly penetrates the light-emitting surface 9 or reaches and penetrates the color wheel 11 by reflection 'of the reflection portion 7'. In order to match the output image with a rectangular shape, the light entrance 5 of the light collector 3 is usually designed to be rectangular, but if the light source 1 used has a circular cross section, part of the light L will be caused by the shape of the light entrance. It cannot enter the light collector 3 and is reflected as light L ', so that the utilization rate of light is limited to a certain range.

Page 5 594107 V. Description of the Invention (2) In addition, one of the reasons why the light L cannot be properly used is because the light collector 3 cooperates with the color wheel 11 to perform the beam splitting operation. As shown in the second figure, if the area where the light L passes through the color wheel 11 is red, only the red light L 0 can pass through, and a part of the light L will be absorbed by the color wheel 11 and the light L 0 of other colors It is reflected by the color wheel 11 and can no longer be used. In the same way, for each color area, only light of a single color gamut L 0 is passed to form an image, and the reflected light L 0 ′ is wasted. Naturally, the utilization rate of the light l will have a certain limit and cannot be properly applied to the imaging surface. In the conventional technology, there is a three-piece digital optical processing image processing device (not shown) designed to increase light utilization and improve image redundancy. It uses light of different wavelengths in the light L to Mirrors have different refractive index properties, and the light L is directly divided into three primary colors, and then projection and imaging are performed. Such an image processing device can increase the light utilization rate ', but it will relatively increase the volume and cost of the product. As described above, how to improve the light utilization rate without increasing the volume and cost of the conventional image processing device has become one of the development priorities of the image processing device. 3. Summary of the Invention In view of the shortcomings of the conventional technology described above, one object of the present invention is to provide a light-collecting device to change the arrangement between the light-collector and the filter layer without adding other equipment. Relationship, recycling reflected by the filter

Page 6 594107 V. Description of the invention (3) Light, increase the utilization of light. Another object of the present invention is to provide a high-brightness image processing device, which can improve the brightness without changing the volume by changing the relationship between the arrangement of the light collector and the filter layer. '' Another object of the present invention is to provide a high-brightness image processing device. By improving the ability of the light collecting device to collect light, the brightness of the image processing device is increased to save the conventional technology. In order to increase the brightness, other equipment needs to be added. cost. In the light collecting device of the present invention, the filter layer is fixed on the light collector, and the light reflected by the filter layer is recovered by using the phenomenon that the light that fails to penetrate the filter layer is reflected, so that the reflected light is continuously reflected. It can penetrate the filter layer to improve light utilization. The features of the present invention as described above will be described in detail in the following preferred embodiments. 4. Embodiment The main feature of the present invention is a light collecting device, which will be described in detail below. The embodiment of the present invention mainly solves the problem of the light collecting device described in the prior art, but the scope of the patent of the present invention is not limited to the description of the following figures and embodiments, but should be based on the scope of the patent applied for. The spirit prevails.

594107 V. Description of the invention (5) Point light S0Urce) will first emit light L, and the light [will pass through the light-transmitting portion 251 'and directly penetrate the light collector 23 or be reflected by the reflection portion 27, and be light-reflected by the light-emitting layer 29. (Including the filter layers 291, 2 92, and 2 93) are filtered into light rays L1, L2, and L3. Then, through the imaging device (including the light-condensing elements 30, 稜鏡 31, and the imaging surface 33) near the filter layer 29, the light L1, light L2, and light L3 will pass through the light-condensing element 30 to condense, and then pass through the edge The mirror 31 is projected onto the imaging surface 33. The light ray L1, light ray L2, and light ray L3 are projected onto the imaging surface 33 through the rotating 稜鏡 31, and the periodic arrangement changes. For example, a 'was originally projected on the top of the imaging surface as ray l 丨, the middle is ray L2, and the bottom is ray L3; when 稜鏡 31 is rotated, the top is ray L3' and the middle is ray [1, the bottom is Ray l 2; 稜鏡 3 1 after continuing to rotate, 'the top will be light L2, the middle will be light L3, and the bottom will be light L1; and then, it will be restored to the top, light L1, and the middle is light L2' The bottom is light [3. Of course, 稜鏡 31 can also be replaced with other similar devices that can change the periodic arrangement of light, so that the light is formed on the imaging surface 33 'to form an image. Of course, the imaging device 'that processes the penetrating filter layer 29 is not limited to only 稜鏡 3 丨 and the imaging surface 33, but may include other objects. And when the light L penetrates the light-transmitting portion 2 51 and enters the interior of the light collector 23, a part of the light L will directly pass from the light incident surface 25 to the filter layer 2 9; part of the light L will pass through The reflection from the reflecting portion 27 is advanced toward the filter layer 29. When the light L passes through the transition light layer 29, the light L of the same color as the filter layer 29 will pass through the filter layer 29, and leave the collector and the optical device 2 3, and a part of the light ^ will be reflected back Filter

Page 9 594107 V. Description of Invention (6) 2 3 Inside. For example, when the light L passes through the filter layer 291, a part of the light L becomes the light L1, and a part of the light L reflects the light L1. The light L1 leaving the collector θ 2 3 is processed by the imaging system to form an image. The light L 1 ′ reflected back to the collector 23 is transmitted through the filter layer 2 9 2 and the filter layer 2 9 3 through the reflection 'of the reflection portion 2 7 and the reflection portion 2 5 2 to form the light L 2 or light. L3, or reflect again to form light L2, or light L3 ,. Although the light L, L1, L3, L3, LI, L2, and L3 will be partially or partially absorbed during each reflection or transmission, the design of the light collecting device 20 of the present invention can greatly Improve the reuse rate of light, and make the overall light utilization rate much higher. The form of the light-transmitting layer 29 can be a piece or a piece of film adhered to the light-emitting surface 28, or a filter formed on the light-emitting surface 28 by various manufacturing methods or a combination thereof. The light layer 29 is not limited in its distribution state and arrangement order, but can be changed according to the overall device design requirements. These manufacturing methods include a dyeing method, a pigment dispersion method (p i g m e n t d i s p e r s e d m e t h 〇 d), a printing method, an electrodepositing method, and an inkjet printing technology. Even in the future, methods that can be made into different types of filter layers 29 can be applied to the present invention.

Page 10 594107 V. Description of the invention (7) body; ί; Ξ !, the collector 23 is a hexahedron, and is-a solid hexahedron conforms to a circle ΐ I51 can be only a circular transparent area on a plane In a shape that is the most like a chirp line L, the probability that the light L enters the light collector 23 is increased. Face 25: “The light collector 23 can be a hollow hexahedron, and the incident light is formed on the plane of the hole = 3 one hole (transparent part 251), and the reflective part 2 5 2 is shaped like a ram. Residual 9 «5 2 5; so the light L can penetrate the hole (light transmitting portion 2 5 i) into Guo Youyi and the reflecting portion 252 can reflect the light in the light collector 23. The light collector 23 of the present invention can also have different shape changes according to different needs. As shown in the third diagram of the second embodiment of the present invention, the light collector 23 may be only a tapered cylinder; and the shape of the light collector 23 is not limited to the implementation of the present invention. The shapes shown or described in the examples. y The light collector 23 may also have only one light-entering surface 25 and one reflective portion 27, but no light-exiting surface; that is, the light-collecting device 20 is a hollow cylinder, and the light-collecting layer 29 directly becomes the light-collecting device. Device 23 is a plane of a hollow cylinder. The filter layer 29 may be a dichroic sheet or a dichroic mirror, or other devices having a filtering, light, or beam splitting effect. In the light collecting device of the present invention, by changing the arrangement between the filter layer and the light collecting device, when the light cannot pass through the filter layer, the light will be reflected by the filter layer, which can be lost in the conventional recoverable technology Dropped light, which improves the utilization of light and improves the efficiency of the instrument. And omitting other species can improve

594107 V. Description of the invention (8) Unnecessary components that may increase the cost and volume of the product. The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of patent application for the present invention; all other equivalent changes or modifications made without departing from the spirit disclosed by the present invention should be included in the following Within the scope of patent application.

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Claims (1)

594107 VI. Application Patent Scope 1. A light collecting device comprising: a light collector having a light incident surface, a light emitting surface and a reflecting portion, the reflecting portion being interposed between the light incident surface and the light emitting surface, And can reflect the light passing through the light collector; and a filter layer is fixed on the light emitting surface. 2. The light-collecting device according to item 1 of the scope of the patent application, wherein the above-mentioned filter layers have different colors. 3. The light-collecting device according to item 2 of the scope of the patent application, wherein the above-mentioned filter layer is composed of red, green and blue. 4. The light-collecting device according to item 2 of the scope of the patent application, wherein the above-mentioned filter layer is a dichroic sheet adhered to the light-emitting surface. 5. The light-collecting device according to item 2 of the scope of the patent application, wherein the manufacturing method of the above-mentioned filter layer is selected from one or a group of the following groups: dyeing method, pigment dispersion method, printing method, Photolithography and inkjet. 6. The light-collecting device according to item 1 of the scope of patent application, wherein the light-collecting device described above is a columnar body. 7. The light-collecting device according to item 1 of the scope of patent application, wherein the light-collecting device described above Page 15 594107 6. Scope of patent application The device is a hexahedron. 8. The light-collecting device according to item 1 of the scope of the patent application, wherein the light-incident surface includes a light-transmitting portion and a light-reflecting portion, and light enters the light collector through the light-transmitting portion, and the light-reflecting portion can reflect the light Light in a light device. 9. The light-collecting device according to item 8 of the scope of patent application, wherein the light-transmitting portion is circular. 10. The light collecting device according to item 1 of the scope of patent application, wherein the light incident surface is a plane including a hole, and light penetrates the hole to enter the light collector, and the plane reflects the light collector. In the light. 11. A light collecting device comprising: a light collector having a light incident surface and a reflecting portion; and a filter layer, the filter layer is fixed on the light collector, and the reflecting portion is interposed between the light collecting portion Between the light surface and the filter layer, to reflect the light green in the light collector 02. The light collecting device according to item 11 of the patent application scope, wherein the above-mentioned filter layer is a color separation sheet. 1 3. The light-collecting device according to item 11 of the scope of patent application, wherein the above-mentioned filter layer is composed of red, green, and blue. Page 16 594107 VI. Application for patent scope 1 4. The light collecting device according to item 11 of the patent application scope, wherein the light incident surface includes a light transmitting part and a light reflecting part, and the light transmitting part allows light to pass through the Concentrator, the reflecting part can reflect the light in the concentrator. 15. The light-collecting device according to item 14 of the scope of patent application, wherein the light-transmitting portion is circular. 16. The light-gathering device according to item 11 of the scope of patent application, wherein the light incident surface is a plane including a hole, and light penetrates the hole to enter the light collector, and the plane reflects the light-collecting Light in the device. 17. An image processing device comprising: a light source; a light collecting device having a light incident surface, a filter, a light layer, and a reflecting portion, the reflecting portion being interposed between the light incident surface and the filter layer And an imaging system that processes light passing through the filter layer to form an image; wherein the light collecting device is located between the light source and the imaging system, the light source is near the light incident surface, and the imaging system is near the Filter layer. 18. The image processing device according to item 17 in the scope of the patent application, wherein the light incident surface includes a light transmitting portion and a light reflecting portion, and the light transmitting portion allows light to pass through the light collector, and the light reflecting portion reflects the light Light in the collector. Page 17