CN1318884C

CN1318884C - Method for regulating optical machine of projection

Info

Publication number: CN1318884C
Application number: CNB2004100493397A
Authority: CN
Inventors: 李俊成
Original assignee: BenQ Corp
Current assignee: BenQ Corp
Priority date: 2004-06-11
Filing date: 2004-06-11
Publication date: 2007-05-30
Anticipated expiration: 2024-06-11
Also published as: CN1707310A

Abstract

The present invention relates to a method for regulating optical machines of projecting cameras. The method comprises the following steps: firstly, viewing from the entrance pupil of a collimator to the exit pupil of the collimator and the first relative position of an imaging component; then regulating an optical system or the imaging component based on the first relative position so as to form a second relative position between the exit pupil of the collimator and the imaging module when people view from the entrance pupil of the collimator.

Description

Adjust the method for the ray machine of projector

Technical field

The present invention relates to a kind of method of adjustment of ray machine, and particularly relate to a kind of method of adjustment that is applied to the ray machine in the projector.

Background technology

The quickening of scientific-technical progress, new technology is constantly weeded out the old and bring forth the new, and the development of projector's industry also is like this.Stressing efficient, working in the field domain easily, compact, compose maneuverability and projector limpid in sight, certainly will become trend become.

Besides along with the raising of compatriots to the quality of the life requirement, the idea of family's theater is goed deep into all orders of society at present, and the projector market of family's theater also becomes the battlefield that manufacturer of projector of every family falls over each other to compete.Therefore, for consumers, it will be important increasingly choosing a high-quality projector.And,, manufacture the high-quality projector that meets consumer's hope as the more efficient mode of production how for the manufacturer, also become an inevitable important topic.

Projector comprises ray machine and shell at least; Ray machine comprises light source, image-forming assembly and lens combination at least.Projector makes light source projects on image-forming assembly in when running, again with the effect of the light scioptics group that image-forming assembly reflected and enlarging projection on screen.At this moment, light source needs correctly to the light path that image-forming assembly arrives lens combination again, so that the image energy in the image-forming assembly intactly is projeced on the screen.Image-forming assembly for example be Digital Micromirror Device (Digital Micro-mirror Device, DMD) or display panels (LiquidCrystal Display Panel, LCD Panel) etc.

Yet the assembly of projector is considerably many, if in process of production, the not suitably combination critically of each assembly in the projector, easy light path produces deviation, and the image in the image-forming assembly can't intactly be projeced on the screen, for example is a scarce left side, lacks the right side, lacks upward or lack inferior.Just find the light path deviation if assembling by the time finishes, then need be taken projector shell apart in addition adjustment again.So adjustment mode is quite inconvenient, and labor intensive and time.

Summary of the invention

In view of this, purpose of the present invention is exactly that a kind of method of adjusting the ray machine of projector is being provided, can be comparatively simple in the manufacture process that makes projector.Make the production of projector can save many times, the cost of production projector can effectively be reduced.

According to above-mentioned purpose, the present invention proposes a kind of method of adjusting the ray machine of projector.This method comprises the following steps: at first, from the inlet end of even light pipe see into, with the endpiece of seeing even light pipe and first relative position of image-forming assembly; And, make and see fashionablely from the inlet end of even light pipe to have second relative position between the endpiece of even light pipe and the image-forming assembly according to first relative position and adjust ray machine or image-forming assembly.

For above-mentioned purpose of the present invention, feature and advantage can be become apparent,, and in conjunction with the accompanying drawings, be described in detail below below especially exemplified by preferred embodiment.

Description of drawings

Fig. 1 is the synoptic diagram of the ray machine of expression projector.

Fig. 2 A～Fig. 2 D is the synoptic diagram of the relative position of expression first light beam, 122 formed light area 122a and image-forming assembly 112.

Fig. 3 is the process flow diagram of expression according to the method for the ray machine of the adjustment projector of preferred embodiment of the present invention.

Fig. 4 is the synoptic diagram of second relative position of the endpiece 106b of the even light pipe 106 of expression and image-forming assembly 112.

The drawing reference numeral explanation:

100: ray machine

102: lampshade

104: fluorescent tube

106: even light pipe

106a: inlet end

106b: endpiece

108a, 108b: collector lens

110: catoptron

112: image-forming assembly

114: projection lens

116: convergent point

118: the second light beams

120: the three light beams

122: the first light beams

122a: light area

124: screen

Embodiment

The present invention is described in detail with a preferred embodiment.Yet this embodiment can't limit invention which is intended to be protected.Embodiment in this article only is a kind of method of adjusting the ray machine of projector under the invention spirit of the present invention.Below, earlier technical characterstic of the present invention is described in detail.

With reference to Fig. 1, Fig. 1 is the synoptic diagram of the ray machine of expression projector.Be generally used in the ray machine 100 in the projector, comprise light source assembly, image-forming assembly 112 and projection lens 114.Light source assembly comprises lampshade 102, fluorescent tube 104, even light pipe (light pipe) 106,

collector lens

108a and 108b and catoptron 110.Image-forming assembly 112 for example be a Digital Micromirror Device (Digital Micro-mirror Device, DMD) or a display panels (Liquid Crystal Display Panel, LCD Panel).

Fluorescent tube 104 is disposed in the lampshade 102.Lampshade 102 in order to the light that converges fluorescent tube 104 and sent in convergent point 116.Even light pipe 106 is arranged at the side of lampshade 102, injects the light of even light pipe 106 in order to homogenising.And even light pipe 106 has inlet end 106a and endpiece 106b.The corresponding convergent point 116 of the inlet end 106a of even light pipe 106 makes the light that converged by lampshade 102, can enter even light pipe 106.

Light sees through inlet end 106a and enters even light pipe 106, and forms second light beam 118 once homogenising in endpiece 106b.And second light beam 118 of homogenising, on the cross section of the direction of being advanced perpendicular to second light beam 118, light intensity is about equally.

Collector lens

108a, 108b are arranged on the side of the endpiece 106b of even light pipe 106, in order to assemble second light beam 118, make second light beam 118 become the 3rd light beam 120.Catoptron 110 is arranged on the side of collector lens 108b, catoptron 110 is in order to the 3rd light beam 120, reflection becomes first light beam 122, with image-forming assembly 112 same planes on form a light area 122a, this light area 122a is in order to illuminate image-forming assembly 112.

Image on the image-forming assembly 112 (for example sees through the computing machine that is connected with projector, literal or the graph data on the image-forming assembly that exports to 112), illuminate through first light beam, 122 formed light area 122a earlier, again after image-forming assembly 112 reflexes to projection lens 114, be projected to screen 124 and imaging, and by we are seen.Therefore, projector is before assembling is finished, and its ray machine 100 must make first light beam, 122 formed light area 122a earlier through adjusting, and can contain full wafer image-forming assembly 112 fully.Make the image on the image-forming assembly 112, can be entirely first light beam 122 and shine, and can intactly be projected on the screen 124.

In traditional projector's manufacture process, earlier adjust ray machine 100 after, just carry out the assembling of shell etc.Yet, traditional adjustment mode can't be learnt the size of the fringe region of light area 122a and image-forming assembly 112, might be complete in being imaged as of screen 124 after ray machine 100 adjustment, but tolerance or the false touch because of part makes imaging again not for complete after projector's assembling is finished.Through inspecting the incomplete reason of imaging, be that the fringe region of light area 122a and image-forming assembly 112 is too small after adjusting ray machine 100, below with further explanation reasons.

The method of the ray machine 100 of traditional adjustment projector is will to be projected on the screen 124 through the image-forming assembly 112 that first light beam 122 illuminates earlier.Then, whether complete according to the imaging on the screen 124 again, and judge whether first light beam, 122 formed light area 122a contain full wafer image-forming assembly 112 fully, then need adjustment according to this if imperfect.

Fig. 2 A～Fig. 2 D is expression first light beam 122 formed light area 122a and the synoptic diagram of the different relative positions of image-forming assembly 112.In Fig. 2 D, because image-forming assembly 112 only have the oblique line part to be shone by the light area 122a of first light beam 122, so the image that image-forming assembly 112 is projected on the screen 124 is imperfect.In classic method, people can see through the image on the screen 124 and learn that light area 122a do not contain full wafer image-forming assembly 112, therefore need adjust projector according to this, just see through and adjust between each optical module such as even light pipe 106,

collector lens

108a, 108b and reflective mirror 110 of forming ray machine 100, or be oppositely arranged the position between image-forming assembly 112 and the above-mentioned optical module, make the light beam 122 formed light area 122a that win contain image-forming assembly 112 fully.

In Fig. 2 A～2C, the image of screen that image-forming assembly 112 is presented in 124 when therefore using the classic method adjustment, will think that these three kinds of aspects are all correctly still for complete.But image-forming assembly shown in Fig. 2 B and Fig. 2 C 112 is too little with the fringe region of light area 122a, easily because the error when carrying out the follow-up assembling of ray machine and after making assembling finish the imaging in screen 124 become imperfect.At this moment, then must the projector of tool labyrinth be disassembled again, carrying out again for the adjustment of ray machine 100 and to the re-assemblying of projector, so adjusting process will make that the manufacture process of projector is comparatively complicated.Therefore, also will make the production of projector need expend the more time, the cost of production projector also can't effectively reduce.

Fig. 3 is the process flow diagram of expression according to the method for the ray machine of the adjustment projector of a preferred embodiment of the present invention.When ray machine 100 normal runnings, by even light pipe 106 outgoing beams, and on image-forming assembly 112, form light area 122a, therefore human eye is seen fashionable from the inlet end 106a of even light pipe 106, see the endpiece 106b of even light pipe 106, by the conjugate principle of imaging as can be known, four edges of this endpiece 106b are four edges of the light area 122a when corresponding to normal running.When the adjusting stage, at first, in step 310, human eye from the inlet end 106a of even light pipe 106 see into.Owing to see fashionablely from the inlet end 106a of even light pipe 106, be four edges seeing endpiece 106b, also can see image-forming assembly 112 simultaneously, wherein four of endpiece 106b edges are just corresponding to four edges of light area 122a.Therefore human eye can be seen first relative position of endpiece 106b and image-forming assembly 112.

Then, in step 312, endpiece 106b that is seen in inlet end 106a according to human eye and first relative position of image-forming assembly 112 are adjusted into second relative position, as shown in Figure 4, just make second relative position be positioned at the centre of endpiece 106b and image-forming assembly 112.

The mode that is adjusted into second relative position is for adjusting light source assembly, image-forming assembly 112 or adjusting light source assembly simultaneously and image-forming assembly 112.Adjusting light source assembly can reach through the second end 106b,

collector lens

108a, 108b or the catoptron 110 of optionally adjusting even light pipe 106.Also promptly, optionally adjust the direct of travel and the image-forming assembly 112 of first light beam 118, second light beam 120, the 3rd light beam 122.

With reference to Fig. 4, Fig. 4 is the synoptic diagram of second relative position of expression endpiece 106b and image-forming assembly 112.Because light area 122a must be contained image-forming assembly 112, and light area 122a is determined by endpiece 106b, therefore, adjust the relative position of endpiece 106b and image-forming assembly 112 and can reach calibration function.

Therefore, though the assembling of parts has the assembling tolerance, but the embodiment that sees through the invention described above adjusts the result behind the ray machine 100 of projector, presents aspect as shown in Figure 4, afterwards, when projector is finished in assembling, though may produce a little errors again, yet image-forming assembly 112 is enough big with the fringe region of light area 122a, so these errors are in the tolerable scope, light area 122a is become to contain image-forming assembly 112, present similar state as Fig. 2 D.

So the method for the ray machine of the adjustment projector of the embodiment of use the invention described above comes the ray machine 100 of projector is adjusted, and can guarantee that the fringe region of image-forming assembly and light area is enough big, will make that the manufacture process of projector is comparatively simple.Therefore, also can be so that the production of projector need not expend the too much time, the cost of production projector also is able to effective reduction.

In sum; though the present invention discloses as above with embodiment; yet it is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; certainly can be used for a variety of modifications and variations, so being as the criterion of should claims scope being defined of protection scope of the present invention.

Claims

1. method of adjusting the ray machine of projector, this ray machine comprise an even light pipe and an image-forming assembly, and this method comprises:

From the inlet end of this even light pipe see into, with the endpiece of seeing this even light pipe and one first relative position of this image-forming assembly; And

Adjust this ray machine according to this first relative position, make and to see fashionablely from the inlet end of this even light pipe to have one second relative position between the endpiece of this even light pipe and this image-forming assembly.

2. the method for claim 1, it is characterized in that: at this second relative position place of being seen, this image-forming assembly is positioned at the central authorities of the endpiece of this even light pipe.

3. the method for claim 1 is characterized in that: carry out following set-up procedure: adjusting should even light pipe, makes to see fashionablely from the inlet end of this even light pipe, has this second relative position between the endpiece of this even light pipe and this image-forming assembly.

4. the method for claim 1 is characterized in that: carry out following set-up procedure: adjust this image-forming assembly, make and see fashionablely from the inlet end of this even light pipe to have this second relative position between the endpiece of this even light pipe and this image-forming assembly.

5. the method for claim 1 is characterized in that: carry out following set-up procedure: adjust the endpiece of this even light pipe, make and see fashionablely from the inlet end of this even light pipe to have this second relative position between the endpiece of this even light pipe and this image-forming assembly.

6. the method for claim 1, it is characterized in that: this ray machine also comprises:

One luminescence component, this luminescence component is in order to send a light to sparing light pipe, so that should penetrate one second light beam by even light pipe;

One collector lens, this collector lens is disposed at the side of the endpiece of this even light pipe, becomes one the 3rd light beam to assemble this second light beam; And

One catoptron, this mirror arrangement are in the side of this collector lens, and this catoptron becomes a light beam in order to reflect the 3rd light beam, and this light beam is in order to this image-forming assembly that throws light on.

7. method as claimed in claim 6 is characterized in that: carry out following set-up procedure: adjust this collector lens.

8. method as claimed in claim 6 is characterized in that: carry out following set-up procedure: adjust this catoptron.

9. the method for claim 1, it is characterized in that: this image-forming assembly is a Digital Micromirror Device.

10. the method for claim 1, it is characterized in that: this image-forming assembly is a display panels.