CN208621807U - Bar-shaped integrator holding meanss and projector - Google Patents

Abstract

The utility model inhibits the marginal portion (corner) of the end face of bar-shaped integrator damaged.Bar-shaped integrator holding meanss have the plate (1,2) of the both ends of the surface of the bar-shaped integrator (6) of clamping prism-shaped.Plate (1) has the bending section (11,12) extended on the length direction of plate.

Description

Bar-shaped integrator holding meanss and projector

Technical field

The utility model relates to keeping with optical channel, rod-shaped lens etc. as the holding meanss of the bar-shaped integrator of representative and Use the projector of the holding meanss.

Background technique

The image formation component that projector has light source, spatially the light from light source is modulated and formed image And image formation component is formed by the projecting lens in image projection to screen.Image formation component be liquid crystal display panel, DMD (digital micromirror device), the image forming surface with quadrilateral shape.In order to by the light from light source uniformly and efficiently irradiate Onto the image forming surface, bar-shaped integrator is used.

Bar-shaped integrator is configured to the light guide section for having quadrangular shape, and the light for being incident on light guide section is repeatedly reflected in side And promote, so that the light intensity distributions in exit facet become uniform.The exit facet of the light guide section forms the area source of quadrilateral shape, The illumination from the area source is mapped on image forming surface using the lamp optical system of telecentricity.The figure of image formation component As forming face is configured at the imaging position of lamp optical system.

The component that will be provided with the solid light guide section being made of the transparent material such as glass is known as stick or rod-shaped lens, will The component for having light guide section hollow made of 4 reflective mirrors of fitting is known as optical channel.

As keep bar-shaped integrator construction, usually with 2 plates clip bar-shaped integrator both ends of the surface and holding Construction.In patent document 1, the both ends of the surface of the rack body for having receiving rod-shaped lens and clamping rod-shaped lens are described The rod-shaped lens holding member of 1st plate and the 2nd plate.

Rack body there is base portion and be set on the base portion at a prescribed interval the mutual opposite 1st and the 2nd Side wall.These base portions are arranged in a manner of around the side of rod-shaped lens with the 1st and the 2nd side wall.1st and the 2nd side wall point Do not have the threaded hole of the 1st end face for the 1st plate to be fixed to the end as incident side, and has for by the 2nd plate The threaded hole of the 2nd end face fixed to the end as emitting side.

1st plate has opening in center portion, has the support of the incident end face of support rod-shaped lens in the opening portion Face.An end in the both ends of the length direction of 1st plate is attached by screws to the 1st end face of the 1st side wall, another end It is attached by screws to the 1st end face of the 2nd side wall.

2nd plate has opening in center portion, has the support of the injection end face of support rod-shaped lens in the opening portion Face.An end in the both ends of the length direction of 2nd plate is attached by screws to the 2nd end face of the 1st side wall, another end It is attached by screws to the 2nd end face of the 2nd side wall.

Existing technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2007-298600 bulletin

Utility model content

Utility model project to be solved

In the holding construction documented by patent document 1, due to being rodlike with the supporting surface pressing of the center portion of plate The construction of the end face of mirror, therefore, plate deforms arciformly.In this case, become the curved face (concave face) of plate with The state that the marginal portion (corner) of the end face of rod-shaped lens is in contact, stress concentrates on corner and damaged sometimes.

In the case where replacing rod-shaped lens and use optical channel, also lead to the problem of identical.

The purpose of the utility model is to provide a kind of marginal portions (corner) of end face for being able to suppress bar-shaped integrator Damaged bar-shaped integrator holding meanss and the projector using the bar-shaped integrator holding meanss.

A technical solution to solve project

In order to achieve the above object, a mode according to the present utility model, provides a kind of bar-shaped integrator holding meanss, The 1st plate and the 2nd plate of the both ends of the surface of bar-shaped integrator with clamping prism-shaped, the 1st plate have the length in the 1st plate The 1st bending section that degree side upwardly extends.

Other modes according to the present utility model provide a kind of projector, comprising: above-mentioned bar-shaped integrator holding meanss； Light source；Bar-shaped integrator is held in the bar-shaped integrator holding meanss；Image formation component, the light warp from the light source The image formation component is incident on by the bar-shaped integrator, which spatially adjusts the light of the incidence It makes and forms image；And projecting lens, it is projected to the image that element is formed is formed by described image.

Detailed description of the invention

Fig. 1 is the figure for being shown as the structure of the bar-shaped integrator holding meanss of the 1st embodiment of the utility model, (a) it is perspective view, is (b) its exploded perspective view.

Fig. 2 is to keep from the angle different from Fig. 1 as the bar-shaped integrator of the 1st embodiment of the utility model The figure of device, is (b) perspective view, is (b) its exploded perspective view.

Fig. 3 is the figure for being shown as the bar-shaped integrator holding meanss of the 1st embodiment of the utility model, and (a) is main View is (b) side view from left side (emitting side), is (c) side view from right side (incident side), is (d) to bow View.

Fig. 4 is the enlarged drawing of the circle B of Fig. 3 (b).

Fig. 5 is the enlarged drawing of the circle A of Fig. 3 (c).

Fig. 6 is the enlarged drawing of the circle C of Fig. 3 (a).

Fig. 7 is the solid for being shown as the structure of the bar-shaped integrator holding meanss of the 2nd embodiment of the utility model Figure.

Fig. 8 is the signal for showing an example of projector for the bar-shaped integrator holding meanss using the utility model Figure.

Fig. 9 is the signal for showing the other examples of projector of the bar-shaped integrator holding meanss using the utility model Figure.

Specific embodiment

Next, illustrating the embodiments of the present invention referring to attached drawing.

(the 1st embodiment)

Fig. 1 to Fig. 3 is the structure for being shown as the bar-shaped integrator holding meanss of the 1st embodiment of the utility model Figure.Fig. 1 (a) is perspective view, is (b) its exploded perspective view.Fig. 2 (b) be from the angle different from Fig. 1 in the case where it is vertical Body figure is (b) exploded perspective view.Fig. 3 (a) is main view, is (b) side view from left side (emitting side), be (c) from The side view of right side (incident side) observation, is (d) top view.

Referring to figs. 1 to Fig. 3.Bar-shaped integrator holding meanss have 2 plates 1,2, pressing member 3, cradle portion 4 and fixed Component 5a, 5b.

Cradle portion 4 has base plate 40 and side wall 41~44.Side wall 41~44 is integrated, composition holding on the whole 1 holding member of optical channel 6.Side wall 42,43 is arranged to vertical with plate face in base plate 40.Side wall 41,42 is with mutually mutual Pair mode, be set to the two sides of side wall 43.Side wall 41,42 is parallel to each other, both relative to side wall 43 with substantially 90 ° of angle Degree setting.The insertion hole 43a for being used to fix pressing member 3 and supporting member 43b, 43c are set to side wall 43.

Side wall 44 is arranged to side wall 41~43 respectively in 90 ° of angle.Side wall 41,42 is located at the both ends of side wall 44.Side Wall 44 has support portion 44a, 44b, threaded hole 44c and protrusion 44d.Support portion 44a, 44b are arranged at a prescribed interval, support The lower surface of optical channel 6.Threaded hole 44c and the positioning that pressing member 3 is used for positioned at 2 protrusion 44d of its two sides, are set to Between support portion 44a, 44b.

Pressing member 3 has abutting part 31 and is set to the fixed part 32,33 at the both ends of abutting part 31.Fixed part 33 has Protrusion, by the way that the protrusion is embedded into insertion hole 43a, so that one end of abutting part 31 is fixed to side wall 43.It is supporting Portion 44a, 44b support optical channel 6 lower surface in the state of, abutting part 31 press optical channel 62 sides (upper surface and The nearby face of side).By the way that fixed part 32 is fixed to threaded hole 44c with screw 34, so that the other end of abutting part 31 be fixed To side wall 43.Fixed part 32 has 2 hole 32a of positioning, by the way that each protrusion 44d is embedded into each hole 32a, thus carry out by Press positioning of the component 3 relative to side wall 44.Pass through supporting member 43b, 43c of side wall 43 and support portion 44a, 44b of side wall 44 And the abutting part 31 of pressing member 3, the side of optical channel 6 can be supported.

Plate 1 is fixed on the face 41a in the outside of side wall 41.Side wall 41 has opening 41d in center portion, on the 41a of face, plate Protrusion 41b, 41c of 1 positioning clips opening 41d and is arranged up and down.The upper end and lower end of side wall 41 are respectively provided with L-type for being embedded in fixing component 5a, 5b constructs.Fixing component 5a, 5b is U-shaped spring member.As fixing component 5a, 5b Material, use stainless steel etc..Fixing component 5a sandwiches the upper end of the upper end of plate 1 and side wall 41, and fixing component 5b will The lower end of plate 1 and the lower end of side wall 41 sandwich, so that plate 1 is fixed on side wall 41.

Plate 1 has opening 13 in central portion, has the bending section extended on the length direction of plate in the two sides of opening 13 11,12.Clip opening and 13 be provided with 2 holes 14a, 14b up and down, by by protrusion 41b, 41c be embedded into this some holes 14a, 14b, so as to be positioned relative to side wall 41 to plate 1.

Plate 2 is fixed on the face 42a in the outside of side wall 42.Side wall 42 has opening 42d in center portion, on the 42a of face, plate Protrusion 42b, 42c of 2 positioning clips opening 42d and is arranged up and down.On the 42a of face, further, for determining datum level 2 pedestals 42e, 42f clip opening 42d be arranged up and down, these pedestals 42e, 42f are provided with the spiral shell for fixed plate 2 Pit 42e-1,42f-1.The opening 42d of side wall 42 is opposite with the opening 41d of side wall 41, and optical channel 6 is configured to its both ends and passes through Lead to these openings 41d, 42d.

Plate 2 has opening 21 in central portion.2 holes 22a, 22c are set to the upside of opening 21,2 hole 22b, 22d settings In the downside of opening 21.By the way that protrusion 42b is embedded into hole 22a, protrusion 42c is embedded into hole 22b, can to plate 2 relative to Side wall 42 is positioned.By by screw 23a, 23b respectively via hole 22c, 22d screw thread engaging in threaded hole 42e-1,42f-1, To which plate 2 to be fixed on to pedestal 42e, 42f of side wall 42.Screw 23a, 23b, hole 22c, 22d and threaded hole 42e-1,42f-1 It is the plate fixing component that plate 2 is fixed to side wall 42.In order to improve the rigidity of plate 2, the expectation of plate fixing component is set to opening 21 Peripheral part near.

Plate 1,2 clamps the both ends of the surface of optical channel 6 in the state of being fixed on side wall 41,42.The incident end face of optical channel 6 It is abutted with the face of the peripheral part of the opening 13 of plate 1, the injection end face of optical channel 6 is abutted with the face of the peripheral part of the opening 21 of plate 2. The expectation of plate 1,2 is made of the material (for example, bright aluminium) with bright property.

Fig. 4 is the figure for illustrating the positional relationship for the opening 21 for projecting end face and plate 2 of optical channel 6, is the circle B of Fig. 3 (b) Enlarged drawing.The ejecting end face of optical channel 6 includes the cricoid end face 6a being made of each edge surface of 4 reflective mirrors.Plate 2 is opened Mouth 21 is greater than the internal diameter of end face 6a, less than the shape of end face 6a.In the present embodiment, internal diameter of the opening 21 than end face 6a goes out greatly The half of width (thickness of reflective mirror) d1 of end face 6a.Thickness of the size based on plate 2 of opening 21, end face 6a width d1 with And angle of emergence of optical channel 6 etc. is suitably set, to avoid the shading phenomenon that injection light occurs.

Fig. 5 is the figure for illustrating the positional relationship of the opening 13 of incident end face and plate 1 of optical channel 6, is the circle A of Fig. 3 (c) Enlarged drawing.The incident end face of optical channel 6 includes the cricoid end face 6b being made of each edge surface of 4 reflective mirrors.Plate 1 is opened Mouth 13 is greater than the internal diameter of end face 6b, less than the shape of end face 6b.In the present embodiment, internal diameter of the opening 13 than end face 6b goes out greatly The half of width (thickness of reflective mirror) d2 of end face 6b.Thickness of the size based on plate 1 of opening 13, end face 6b width d2 with And suitably set to incidence angle of optical channel 6 etc., to avoid the shading phenomenon that incident light occurs.

Determine pedestal 42e, 42f of datum level, by the way that plate 2 to be fixed to so as to which the optical channel 6 of plate 2 will be abutted to It projects end face and is set as datum level.Fig. 6 is the enlarged drawing of the circle C of Fig. 3 (a).As shown in fig. 6, the plate face of plate 2 abuts to pedestal The face of 42e, 42f, the injection end face of optical channel 6 abut to the plate face of plate 2.The face of pedestal 42e, 42f are being set as datum level In the case of, the injection end face of optical channel 6 is also consistent with datum level.

In the bar-shaped integrator holding meanss of present embodiment, in the case where optical channel 6 is held in cradle portion 4, Firstly, plate 2 to be fixed on to pedestal 42e, 42f of side wall 42, the formation that the injection end face of optical channel 6 abuts to plate 2 there is into opening 21 face (referring to Fig. 4).Next, the face for making the incident end face of optical channel 6 have opening 13 with the formation of plate 1 abuts (referring to figure 5) plate 1, in this state, is fixed to side wall 41 using fixing component 5a, 5b.Finally, it is logical to fix light using pressing member 3 The side in road 6.

Bar-shaped integrator holding meanss according to the present embodiment, function as follows effect.

The incident end face of optical channel 6 is protruded outward compared to the face 41a of side wall 41, is supported by the incident end face of optical channel 6 It is connected in the state of the center portion of plate 1, fixing component 5a, 5b is to the both ends of the face side 41a pressing plate 1.In this case, for Plate 1, the power for deforming its arciformly play a role.In the present embodiment, plate 1 has the length in plate in the two sides of opening 13 The bending section 11,12 just upwardly extended.The plate face angulation of bending section 11,12 and plate 1 is about 45 degree.The angle is 25 degree It is above.It is of course also possible to be set as vertical (90 degree).It improves by these bending sections 11, the rigidity of 12 bring plates 1, therefore, Plate 1 will not deform arciformly.Therefore, the incident end face of plate 1 and optical channel 6 can be made to carry out face contact and therefore do not generate stress Concentrate on the marginal portion (corner) of the incident end face of optical channel 6 and damaged such problems.

In addition, there is the method (in the following, being denoted as method A) for the thickness for increasing plate, inciting somebody to action in the method as the rigidity for improving plate The method (in the following, being denoted as method B) of side wall is fixed in part near the opening of plate.But replace bending section 11,12 and In the case where the rigidity of application method A, method B to improve plate 1, lead to the problem of as follows.

(the case where application method A)

In the projector equipped with bar-shaped integrator holding meanss, the light from light source is converged to by light collecting lens On the incident end face of optical channel 6.The opening 13 that light from light collecting lens passes through plate 1 is incident on the incident end face of optical channel 6.Such as The thickness of fruit plate 1 increases, then is incident on a part of the light of the incident end face of optical channel 6 by the partial occlusion of opening 13, knot Fruit is that the brightness (brightness of area source) of the injection endface of optical channel 6 reduces.

(the case where application method B)

The opening 13 that light from light collecting lens passes through plate 1 is incident on the incident end face of optical channel 6, but a part of light also according to It is mapped to the part of the periphery of opening 13.Since the intensity of the light from light collecting lens is high, if as plate 1 material and Using stainless steel etc., then sometimes due to light irradiation and be open 13 part fever and melt.Therefore, the material as plate 1 uses Bright aluminium.

Fixing component 5a, 5b is not had the material of bright property by stainless steel etc..Therefore, if with fixing component 5a, 5b come Near the opening 13 of fixed plate 1, then sometimes due to light irradiation and fixing component 5a, 5b fever and melt.

It is the explanation of the function and effect of the plate 1 of the incident surface side about optical channel 6 above.

At the plate 2 of the outgoing surface side of optical channel 6, the power for deforming its arciformly also plays a role.In present embodiment In, by with screw 23a, 23b come near the opening 21 of fixed plate 2, to improve the rigidity of plate 2, plate 2 will not become arciformly Shape.Therefore, the injection end face of plate 2 and optical channel 6 can be made to carry out face contact therefore not generate stress and concentrate on optical channel 6 Project the marginal portion (corner) of end face and damaged such problems.

In addition, plate 2 is configured at the emitting side of optical channel 6, therefore, in the case where not leading to the problem of using above method B.

(the 2nd embodiment)

Fig. 7 is the perspective view for being shown as the bar-shaped integrator holding meanss of the 2nd embodiment of the utility model.

The bar-shaped integrator holding meanss of present embodiment use plate 7 on this point replacing plate 2, with the 1st embodiment party Formula is different.Structure other than plate 7 is identical as the 1st embodiment, therefore, omits the explanation of these structures herein.

As shown in fig. 7, plate 7 has the bending section 71,72 extended on the length direction of plate 7.Other than bending section 71,72 Part is substantially the same with the plate 2 illustrated in the 1st embodiment, but screw 23a, 23b are not near permanent opening 21, and It is the both ends of fixed plate 7.Bending section 71,72 is set to the two sides of opening 21.Formed by the plate face of bending section 71,72 and plate 7 Angle is about 45 degree.The angle is 25 degree or more.It is of course also possible to be set as vertical (90 degree).

Bar-shaped integrator holding meanss according to the present embodiment, the bending section 71 of the two sides by being set to opening 21, 72 improve the rigidity of plate 7, and therefore, plate 7 will not deform arciformly.Therefore, can make the injection end face of plate 7 and optical channel 6 into Row face contact, therefore, do not generate stress concentrate on optical channel 6 injection end face marginal portion (corner) and breakage as ask Topic.

The bar-shaped integrator holding meanss of each embodiment described above are an example of the utility model, structure It can suitably change.

For example, plate 1 has bending section 11,12, and but not limited thereto in the 1st embodiment.Plate 1 also can be made tool The construction of a side in standby bending section 11,12.Similarly, in the 2nd embodiment, plate 7 has bending section 71,72, but unlimited Due to this.Plate 7 also can be made the construction for having the side in bending section 71,72.

It uses alternatively, it is also possible to replace optical channel 6 and has the solid light guide section being made of the transparent material such as glass Stick, with plate 1 and plate 2 (or plate 7) clamping stick both ends of the surface.But in this case, plate needs to be configured to the end of pressing bar The quadrangle in face.

(projector)

The projector of the utility model includes above-mentioned bar-shaped integrator holding meanss；Light source；Bar-shaped integrator is held in The bar-shaped integrator holding meanss；Image formation component, the light from the light source are incident on via the bar-shaped integrator The image formation component, the image formation component are spatially modulated the light of the incidence and form image；And projection Lens are projected to the image that element is formed is formed by described image.

The bar-shaped integrator holding meanss of the utility model can be applied to various projectors.

Fig. 8 is the schematic diagram for showing an example of projector for the light tunnel holding meanss using the utility model.

Referring to Fig. 8, projector has light source 100, colour wheel 101, optical channel 102, optical lens 103a~103c, reflective mirror 104a, 104b, DMD105 and projecting lens 106.

Light source 100 projects white light.As light source 100, it is able to use xenon lamp, extra-high-pressure mercury vapour lamp.From light source 100 White light be irradiated to colour wheel 101 through not shown optical lens.

Colour wheel 101 has red transmission region, green transmissive region and blue transmission region, by rotating the wheel, from And the white light from light source 100 is successively irradiated to red transmission region, green transmissive region and blue transmission region.White Red light in light penetrates red transmission region, and green light penetrates green transmissive region, and blue light penetrates blue transmission region.? At colour wheel 101, red light (R light), green light (G light) and blue light (B light) are projected with time-sharing format.

Light (R, G, B) from colour wheel 101 is irradiated to the incident end face of optical channel 102 through not shown optical lens. The end face of projecting of optical channel 102 forms the area source for successively projecting R light, G light and B light.

Between the injection end face of optical channel 102 and DMD105, it is anti-to be configured in order optical lens 103a, 103b, optics Light microscopic 104a, 104b and optical lens 103c.From optical channel 102 injection end face light pass through optical lens 103a, 103b is incident on optical mirror 104a.

Optical mirror 104a reflects the light for having passed through optical lens 103a, 103b to optical mirror 104b.Optics Reflective mirror 104b reflects the light from optical mirror 104a to DMD105.Light from optical mirror 104b passes through optics Lens 103 are irradiated to DMD105.

Optical lens 103a, 103b, 103c are on the image forming surface that the illumination from area source is mapped to DMD105 The lamp optical system of telecentricity.The image forming surface of DMD105 is configured at the imaging surface of the lamp optical system of the telecentricity.

Projecting lens 106 will be formed in the image projection on the image forming surface of DMD105 to screen (not shown).

In above-mentioned projector, light is kept by the bar-shaped integrator holding meanss of above-mentioned 1st or the 2nd embodiment Channel 102.

Fig. 9 is the block diagram for showing the other examples of projector of the bar-shaped integrator holding meanss using the utility model.

Projector 1100 has light source 1101, optical engine part 1102, image forming unit 1103 and projecting lens (projection Optical system) 1104.Image forming unit 1103 has according to picture signal and the display equipment 1105~1107 of modulation light, tool There is the function that image is formed based on the light projected from optical engine part 1102.It, can also be with as display equipment 1105~1107 Digital micromirror device (DMD), liquid crystal display panel used as reflection type display element.Image forming unit 1103, which has, to be corresponded to 3 display equipment 1105~1107 of red light, green light and blue light.Projecting lens 1104 has and will form list from image The light that member 1103 projects projects to the function that screen 1109 is waited and shown as image.

In above-mentioned projector, between light source 1101 and optical engine part 1102, the rodlike product of the utility model is configured Divide device holding meanss.Bar-shaped integrator holding meanss keep the bar-shaped integrators such as optical channel, rod-shaped lens.

As light source 1101, it is able to use that have with laser diode (LD) etc. be the solid light source of representative, fluorophor Light source, in addition it is possible to using by light source unit made of these combination of light sources.

Label declaration

1,2 plate

3 pressing members

4 cradle portions

5a, 5b fixing component

6 optical channels

11,12 bending section

Claims (10)

1. a kind of bar-shaped integrator holding meanss, which is characterized in that

The 1st plate and the 2nd plate of the both ends of the surface of bar-shaped integrator with clamping prism-shaped, the 1st plate have in the 1st plate Length direction on the 1st bending section that extends.

2. bar-shaped integrator holding meanss according to claim 1, which is characterized in that

The 1st end face as the plane of incidence in the both ends of the surface of the bar-shaped integrator is abutted with the 1st plate,

1st plate has the 1st opening for making light be incident on the 1st end face, is provided in the two sides of the 1st opening 1st bending section.

3. bar-shaped integrator holding meanss according to claim 2, which is characterized in that

2nd plate has the 2nd bending section extended on the length direction of the 2nd plate.

4. bar-shaped integrator holding meanss according to claim 3, which is characterized in that

The 2nd end face as exit facet in the both ends of the surface of the bar-shaped integrator is abutted with the 2nd plate,

2nd plate has the 2nd opening for passing through from the light that the 2nd end face is projected, and is arranged in the two sides of the 2nd opening There is the 2nd bending section.

5. bar-shaped integrator holding meanss according to claim 1, which is characterized in that

The bar-shaped integrator holding meanss have the side wall for being fixed with the 2nd plate,

The 2nd end face as exit facet in the both ends of the surface of the bar-shaped integrator is abutted with the 2nd plate,

2nd plate has the 2nd opening for passing through from the light that the 2nd end face is projected, in the peripheral part of the 2nd opening, if It is equipped with the fixing component for the 2nd plate to be fixed to the side wall.

6. bar-shaped integrator holding meanss according to claim 2, which is characterized in that

The plate face of 1st plate and the 1st bending section angulation are 45 degree.

7. bar-shaped integrator holding meanss according to claim 3, which is characterized in that

The plate face of 2nd plate and the 2nd bending section angulation are 45 degree.

8. bar-shaped integrator holding meanss according to claim 2, which is characterized in that

The bar-shaped integrator is optical channel.

9. bar-shaped integrator holding meanss according to claim 2, which is characterized in that

The bar-shaped integrator is bar-like lens.

10. a kind of projector comprising:

Bar-shaped integrator holding meanss as claimed in claim 2；

Light source；

Bar-shaped integrator is held in the bar-shaped integrator holding meanss；

Image formation component, the light from the light source are incident on the image formation component via the bar-shaped integrator, the figure The light of the incidence is spatially modulated and forms image as forming element；And

Projecting lens is projected to the image that element is formed is formed by described image.