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Lens Assemblies and Projectors

A technology of lens components and projection lenses, which is applied in the field of projection, can solve problems such as changes in the installation position of mirrors, deformation of beams, local blurring, etc., and achieve the effects of improving projection effects, reducing deformation phenomena, and reducing extrusion forces

Active Publication Date: 2017-07-25
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the reflector is fixed, it may cause changes in the reflection angle of the curved reflector, and then there will be problems such as offset of the projected image, partial blurring, or uneven focus of the image, which will affect the quality of the projection display. The installation position of the curved reflector is adjusted. When the screws are tightened, the beam is easily deformed under the action of external force. The deformation of the beam will cause the installation position of the reflector to change, which will affect the projection effect of the projector. If it is not adjusted, It will also affect the projection effect of the projector

Method used

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  • Lens Assemblies and Projectors
  • Lens Assemblies and Projectors
  • Lens Assemblies and Projectors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Such as figure 2 as shown, figure 2 Schematic diagram of the structure of the lens assembly provided by the embodiment of the present invention; the lens assembly provided by the present invention includes a mounting base 1, a curved mirror 2 installed in the mounting base 1, and a projection lens 3, wherein: the curved mirror 2 is located on the projection lens 3, the projection lens 3 can project light onto the reflective surface of the curved reflector 2, and the mounting base 1 is provided with an arc-shaped support beam 11. The lens assembly also includes:

[0057] Connecting piece 4, connecting piece 4 is used for clamping the first end of curved surface reflector 2 and arc-shaped support beam 11, and the connecting piece is provided with at least one waist-shaped hole, and the length direction of each waist-shaped hole is along the projection lens 3 extends in the light-emitting direction, and the connector 4 is fixedly connected to the arc-shaped support beam...

Embodiment 2

[0064] Such as image 3 as shown, image 3 The first partial structure schematic diagram of the lens assembly provided by the embodiment of the present invention; the lens assembly provided by the present application also includes: a second adjustment member 6, the second adjustment member 6 passes through one end of the mounting base 1 and the first end of the curved mirror The two ends are connected, and the rotation of the second adjusting member 6 can drive the second end of the curved reflector 2 to move towards the projection lens 3 . Structurally, the rotation axis of the second adjustment part 6 is perpendicular to the rotation axis of the first adjustment part. Due to the influence of the ultra-short-focus optical design, theoretically there is a problem of concave imaging at the top of the screen. The light above the screen corresponds to the bottom of the curved mirror. The projected light shape on the top of the screen is concave, corresponding to the convexity of...

Embodiment 3

[0066] The shape of the above-mentioned connecting piece 4 can be various. In an optional implementation mode provided by the third embodiment, such as Figure 4 , Figure 5 , Image 6 shown, where: Figure 4 An exploded view of the first partial structure of the lens assembly provided by the embodiment of the present invention; Figure 5 Schematic diagram of the structure of the curved mirror provided by the embodiment of the present invention; Image 6 Schematic diagram of the structure of the connecting piece provided for the embodiment of the present invention; the first end of the curved reflector is provided with a lug 21, and the connecting piece 4 includes:

[0067] The installation part 41 fixedly connected with the arc-shaped support beam 11 is provided with a waist-shaped hole 411;

[0068] The engaging portion 42 engaged with the buckle 21 provided on the curved reflector 2 is fixedly connected to the mounting portion 41 and the engaging portion 42 to form an L...

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PUM

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Abstract

The invention discloses a lens assembly and a projector, so as to improve the adjustment accuracy and improve the projection effects of the projector. The lens assembly comprises a mounting seat and a curved mirror and a projection lens arranged in the mounting seat, wherein the curved mirror is located in the light-out direction of the projection lens; the projection lens can project light on the reflection surface of the curved mirror; and an arc-shaped supporting beam is arranged on the mounting seat. The lens assembly also comprises a connection piece and a first adjusting piece, wherein the connection piece is used for enabling the first end of the curved mirror and the arc-shaped supporting beam to be clamped; the connection piece is provided with at least one waist-shaped hole; the length direction of each waist-shaped hole extends along the light-out direction of the projection lens; the connection piece passes through one waist-shaped hole via a screw to be fixedly connected with the arc-shaped supporting beam; the first adjusting piece passes through the second end of the curved mirror to be fixedly connected with the mounting seat; and the first adjusting piece rotates to drive the second end of the curved mirror to move in a direction close to or away from the projection lens.

Description

technical field [0001] The invention relates to the technical field of projection, in particular to a lens assembly and a projector. Background technique [0002] With the continuous advancement of science and technology, projection display technology has developed rapidly in recent years. Among them, short-focus projection has become the focus of recent research due to the advantages of small projection distance and large projection screen. [0003] Currently, one way to realize short-focus projection is reflective short-focus projection. That is, the image is projected on the curved mirror through the projection lens, and reflected to the projection screen through the curved mirror. [0004] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of a lens assembly in the prior art. The upper end of the reflector 03 in the prior art is fixedly connected to the main housing 02 through a straight beam, the upper end of the reflector 03 is fixed on the be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14
CPCG03B21/142G03B21/145
Inventor 杨长明田新团
Owner QINGDAO HISENSE LASER DISPLAY CO LTD