Single LCD light path system based on fly-eye lens dodging

Abstract

The utility model discloses a fly's-eye lens dodging-based single LCD light path system, which is characterized by comprising a first LED lamp, a second LED lamp, a third LED lamp, a first collimation assembly, a second collimation assembly, a third collimation assembly, a light combination assembly, a fly's-eye lens, a first lens, a second lens, a Fresnel lens and an LCD screen, the first collimating assembly is used for collimating light of the first LED lamp, the second collimating assembly is used for collimating light of the second LED lamp, the third collimating assembly is used for collimating light of the third LED lamp, the light combining assembly is used for combining the collimated light of the first LED lamp, the collimated light of the second LED lamp and the collimated light of the third LED lamp into one beam of light, and the light combining assembly is used for combining the collimated light of the first LED lamp, the collimated light of the second LED lamp and the collimated light of the third LED lamp into one beam of light. The light beams after light combination through the light combination assembly sequentially pass through the fly eye lens, the first lens, the second lens and the Fresnel lens and are projected to the LCD screen.

Description

Technical Field

[0001] The utility model relates to the field of optical equipment, in particular to a single LCD light path system based on fly-eye lens light homogenization. Background Art

[0002] Most existing single-LCD optical systems use a light hopper (reflector) as a homogenizing element, typically using a single white light source. However, the light hopper itself is bulky, inefficient, and produces poor homogenization. Furthermore, the white light source has a narrow color gamut. Therefore, a single-LCD optical system is needed that can address these issues. Utility Model Content

[0003] The main purpose of this application is to provide a single LCD optical path system based on fly-eye lens light uniformity, aiming to solve the problems mentioned in the background technology.

[0004] The present application provides a single LCD light path system based on fly-eye lens light uniformity, comprising a first LED lamp, a second LED lamp, a third LED lamp, a light combining component, a fly-eye lens, a first lens, a second lens, a mirror and an LCD screen;

[0005] The light combining component is used to combine the light from the first LED lamp, the second LED lamp and the third LED lamp into a beam, the first lens is used to focus the light beam passing through, and the second lens is used to z-collimate the light beam passing through. The light beam combined by the light combining component passes through the fly-eye lens, the first lens, the second lens and the Philips lens in sequence and is projected onto the LCD screen.

[0006] Furthermore, the first LED lamp generates red light, the second LED lamp generates green light, and the third LED lamp generates blue light.

[0007] Furthermore, the light combining component includes a first light combining mirror and a second light combining mirror parallel to each other, the first light combining mirror transmits the light of the second LED lamp and reflects the light of the third LED lamp, and the second light combining mirror transmits the light of the first LED lamp and reflects the light of the second LED lamp and the third LED lamp.

[0008] Furthermore, the angle between the light projection direction of the first LED lamp and the second light combining mirror is 45 degrees, the angle between the light projection direction of the second LED lamp and the first light combining mirror is 45 degrees, and the angle between the main light direction of the third LED lamp and the first light combining mirror is 45 degrees.

[0009] Furthermore, the first lens is a convex-concave lens, the second lens is a concave-convex lens, the convex surface of the first lens faces the fly-eye lens, and the convex surface of the second lens faces the fly-eye lens.

[0010] Furthermore, it also includes a reflector arranged between the first lens and the second lens, and the reflector is used to adjust the direction of the light path. The light path after the light is combined by the light combining assembly passes through the fly-eye lens, the first lens, the reflector and the second lens in sequence.

[0011] Furthermore, it also includes a first collimating component, a second collimating component and a third collimating component, the first collimating component is used to collimate the light of the first LED lamp, the second collimating component is used to collimate the light of the second LED lamp, the third collimating component is used to collimate the light of the third LED lamp, and the light combining component is used to combine the collimated light of the first LED lamp, the second LED lamp and the third LED lamp into a beam.

[0012] Furthermore, the first collimating assembly includes a third lens and a fourth lens, and the light generated by the first LED lamp passes through the third lens and the fourth lens in sequence to form a collimated light beam.

[0013] Furthermore, the third lens is a concave-convex lens, with the concave surface of the third lens facing the first LED lamp, and the fourth lens is a biconvex lens, with the larger convex surface of the fourth lens facing the light combining assembly. Furthermore, the first collimating assembly, the second collimating assembly, and the third collimating assembly are identical.

[0014] The utility model improves the color gamut by adopting RGB light combination, and improves uniformity by setting a compound eye lens. Since the compound eye lens element itself is relatively small, the compound eye lens is combined with the first lens and the second lens to improve both uniformity and light efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a structural schematic diagram of a single LCD optical path system based on fly-eye lens light homogenization according to an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Cross-sectional view of an embodiment.

[0019] Figure 3 yes Figure 1 Schematic diagram of the optical path of an embodiment.

[0020] Figure 4 yes Figure 1 Schematic diagram of the embodiment after adding a reflector.

[0021] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] To make the above-mentioned purposes, features, and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] See also Figure 1-3 The present application provides a single LCD optical path system 100, including a first LED lamp 11, a second LED lamp 12, a third LED lamp 13, a light combining component, a fly-eye lens 40, a first lens 51, a second lens 52, a mirror 60 and an LCD screen 70; the light combining component is used to combine the light of the first LED lamp 11, the second LED lamp 12 and the third LED lamp 13 into a beam, the first lens 51 is used to focus the light beam passing through, and the second lens 52 is used to disperse the light beam passing through. The light beam after being combined by the light combining component passes through the fly-eye lens 40, the first lens 51, the second lens 52 and the mirror 60 in sequence and is projected onto the LCD screen 70.

[0024] The present invention improves the color gamut by using RGB light combination, and then enhances the light uniformity capability by setting a fly-eye lens 40. Since the fly-eye lens 40 element itself is relatively small, the fly-eye lens 40 is combined with the first lens 51 and the second lens 52 to enhance the light uniformity capability and improve the light efficiency.

[0025] In one embodiment of the present invention, the first LED lamp 11 generates red light, the second LED lamp 12 generates green light, and the third LED lamp 13 generates blue light.

[0026] In one embodiment of the present invention, the light combining component includes a first light combining mirror 31 and a second light combining mirror 32 which are parallel to each other. The first light combining mirror 31 transmits the light of the second LED lamp 12 and refracts the light of the third LED lamp 13. The second light combining mirror 32 transmits the light of the first LED lamp 11 and refracts the light of the second LED lamp 12 and the third LED lamp 13.

[0027] In one embodiment of the present invention, the angle between the light projection direction of the first LED lamp 11 and the second light combining mirror 32 is 45 degrees, the angle between the light projection direction of the second LED lamp 12 and the first light combining mirror 31 is 45 degrees, and the angle between the light projection direction of the third LED lamp 13 and the first light combining mirror 31 is 45 degrees.

[0028] In one embodiment of the present invention, the first lens 51 is a convex-concave lens, the second lens 52 is a concave-convex lens, and the convex surface of the first lens 51 faces the fly-eye lens 40 , while the convex surface of the second lens 52 faces the filament mirror 60 .

[0029] In one embodiment of the present invention, it also includes a first collimating component, a second collimating component and a third collimating component. The first collimating component is used to collimate the light of the first LED lamp 11, the second collimating component is used to collimate the light of the second LED lamp 12, the third collimating component is used to collimate the light of the third LED lamp 13, and the light combining component is used to combine the collimated light of the first LED lamp 11, the second LED lamp 12 and the third LED lamp 13 into a beam.

[0030] In one embodiment of the present invention, the first collimating assembly includes a third lens 21 and a fourth lens 22 , and the light generated by the first LED lamp 11 passes through the third lens 21 and the fourth lens 22 in sequence to form a collimated light beam.

[0031] In one embodiment of the present invention, the third lens 21 is a concave-convex lens, and the concave surface of the third lens 21 faces the first LED lamp 11 . The fourth lens 22 is a biconvex lens, and the larger convex surface of the fourth lens 22 faces the light combining assembly.

[0032] like Figure 4 As shown, in one embodiment of the present invention, the single LCD optical path system 100 also includes a reflector 80 arranged between the first lens 51 and the second lens 52, and the reflector 80 is used to adjust the direction of the light path. The light path after being combined by the light combining component passes through the fly-eye lens 40, the first lens 51, the reflector and the second lens 52 in sequence.

[0033] In one embodiment of the present invention, the first collimating assembly, the second collimating assembly and the third collimating assembly are identical.

[0034] Fresnel lenses generally refer to Fresnel lenses. Fresnel lenses, also known as threaded lenses, are typically made of thin sheets of polyolefin material, though some are made of glass. One side of the lens is smooth, while the other is engraved with concentric circles from small to large. The pattern is designed based on light interference and perturbation, as well as relative sensitivity and reception angle requirements.

[0035] A compound eye lens is an optical component designed to mimic the visual system of naturally occurring compound-eyed insects, such as dragonflies and flies. Rather than a single lens, a compound eye lens consists of an array of many small lenses, each responsible for capturing a portion of the image. Working together, they provide a wide field of view and excellent depth perception.

[0036] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A single LCD optical path system based on fly-eye lens light homogenization, characterized in that: It includes a first LED lamp, a second LED lamp, a third LED lamp, a light combining component, a compound eye lens, a first lens, a second lens, a mirror and an LCD screen; The light combining component is used to combine the light from the first LED lamp, the second LED lamp and the third LED lamp into a beam, the first lens is used to focus the light beam passing through, and the second lens is used to collimate the light beam passing through the light combining component. The light beam is projected onto the LCD screen through the fly-eye lens, the first lens, the second lens and the Philips lens in sequence.

2. The single LCD optical path system based on fly-eye lens light homogenization according to claim 1, characterized in that: The first LED lamp generates red light, the second LED lamp generates green light, and the third LED lamp generates blue light.

3. The single LCD optical path system based on fly-eye lens light homogenization according to claim 1, characterized in that: The light combining component includes a first light combining mirror and a second light combining mirror parallel to each other, the first light combining mirror transmits the light of the second LED lamp and reflects the light of the third LED lamp, and the second light combining mirror transmits the light of the first LED lamp and reflects the light of the second LED lamp and the third LED lamp.

4. The single LCD optical path system based on fly-eye lens light homogenization according to claim 3, characterized in that: The angle between the main light direction of the first LED lamp and the second light combining mirror is 45 degrees, the angle between the main light direction of the second LED lamp and the first light combining mirror is 45 degrees, and the angle between the main light direction of the third LED lamp and the first light combining mirror is 45 degrees.

5. The single LCD optical path system based on fly-eye lens light homogenization according to claim 1, characterized in that: The first lens is a convex-concave lens, the second lens is a concave-convex lens, the convex surface of the first lens faces the fly-eye lens, and the convex surface of the second lens faces the fly-eye lens.

6. The single LCD optical path system based on fly-eye lens light homogenization according to claim 1, characterized in that: It also includes a reflector arranged between the first lens and the second lens, and the reflector is used to adjust the direction of the light path. The light path after the light is combined by the light combining assembly passes through the fly-eye lens, the first lens, the reflector and the second lens in sequence.

7. The single LCD optical path system based on fly-eye lens light homogenization according to claim 1, characterized in that: It also includes a first collimating component, a second collimating component and a third collimating component. The first collimating component is used to collimate the light of the first LED lamp, the second collimating component is used to collimate the light of the second LED lamp, the third collimating component is used to collimate the light of the third LED lamp, and the light combining component is used to combine the collimated light of the first LED lamp, the second LED lamp and the third LED lamp into a beam.

8. The single LCD optical path system based on fly-eye lens light homogenization according to claim 7, characterized in that: The first collimating assembly includes a third lens and a fourth lens. The light generated by the first LED lamp passes through the third lens and the fourth lens in sequence to form a collimated light beam.

9. The single LCD optical path system based on fly-eye lens light homogenization according to claim 8, characterized in that: The third lens is a concave-convex lens, and the concave surface of the third lens faces the first LED lamp. The fourth lens is a biconvex lens, and the surface of the fourth lens with a larger convexity faces the light combining assembly.

10. The single LCD optical path system based on fly-eye lens light homogenization according to claim 8, characterized in that: The first collimation assembly, the second collimation assembly and the third collimation assembly are identical.

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