CN105824110A - Projection optical apparatus and projector - Google Patents

Abstract

The invention provides a projection optical apparatus that allows adjustment of the position of a lens of a refractive optical system in the state that the refractive optical system and a reflective optical system are configured and a projector. In the projection optical apparatus (5), the refractive system includes a plurality of lens groups, one of which includes a first lens (L11) located in a position closest to a reflective system and a first lens frame (61) having an accommodation section (614) that accommodates the first lens (L11). The first lens (L11) has a lens cutoff section, and the accommodation section (614) has a wall section (617a) that is located outside the lens cutoff section and a first opening section that exposes a side surface of the first lens that is opposite the lens cutoff section. The wall section (617a) is provided with an open section (6141) that exposes the lens cutoff section. A guide barrel (65) is so formed as to expose the first opening section and the open section (6141). A projection optical apparatus enclosure (51) has a second opening section that exposes the first opening section and is configured to be capable of exposing the open section (6141).

Description

Projector optical apparatus and projector

Technical field

The present invention relates to projector optical apparatus and projector.

Background technology

At present it is known that favorably the light (transmitting light) sent from light source is modulated according to image information with optic modulating device, and by the projector of projector optical apparatus this light of enlarging projection.Further, projector exists from closely carrying out the projector that projects with projection surfaces such as the wide angular screens in visual field.In such projector, as can closely carry out the projector optical apparatus of wide visual field angle projection, have employed the projector optical apparatus of short focus.It should be noted that in recent years, as the projection optics system for the projection of closely wide visual field angle, be used together catadioptric complex optics with dioptric system.

Patent documentation 1 discloses the projection imaging optical system of a kind of following composition, it have employed fixing lens section, moving lens portion and the optical system of concave mirror as a kind of, reduce the skew ray bundle of tiltedly projection relative to the gradient of optical axis while, be effectively prevented lens barrel and block (ケ ラ レ) imaging beam.

Look-ahead technique document

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2011-85922 publication

From closely projecting in projection optics system time (short range projection) with the wide angle of visual field, the distance from projector optical apparatus to screen is very near, and therefore, compared with general projector optical apparatus, the aberration variation that focusing is brought is bigger.Further, in projection optics system, being all to have employed multiple highly sensitive spherical lens, the composition of non-spherical lens, compared with general projector optical apparatus, the deviation arranging position of each lens brings the biggest impact to the fluctuation of aberration.Thus, it is incident upon in the image on screen and is easily generated degradation under filed curvature, the aberration contrast that caused of variation, there is the problem that picture quality is greatly reduced.To this end, when assembling lens group, need to do one's utmost to suppress the deviation arranging position of each lens；PH effect must be carried out after assembling；Etc..

It should be noted that, in the case of have employed the projector optical apparatus of dioptric system and reflective optics, when carrying out the adjustment of lens position after assembling, the most often project projects images by reflecting mirror, while the projects images that limit visuognosis is projected, limit adjusts the position of the lens of dioptric system.

As method of adjustment in this case, consider there is a kind of following method, i.e., use the projector optical apparatus as main part (マ ス タ) (at this, device possesses reflecting mirror but does not possess the projection optical unit constituting dioptric system, it is only used as benchmark to use), arrange in this projector optical apparatus and want the projection optical unit of position adjustment to carry out position adjustment.At this moment, need after the adjustment projection optical unit is re-assemblied after unloading as the projector optical apparatus of main part the projector optical apparatus used actually (at this, device possesses reflecting mirror, does not simply possess the projection optical unit constituting dioptric system) on.But, projector optical apparatus and actual projector optical apparatus as main part are different devices, there is the deviation on assembling, even if thus can use the projector optical apparatus as main part to suppress aberration, but when re-assemblying as actual projector optical apparatus it is also possible that produce aberration.

For this situation, consider there is other method of adjustment a kind of, i.e., do not use the projector optical apparatus as main part, but the projection optical unit that will carry out position adjustment is assembled in the projector optical apparatus being practically used as product, therein projection optical unit is carried out position adjustment.At this moment, it is not necessary to the projection optical unit after dismounting adjustment, it is possible to suppress aberration in the same manner as in time adjusting.

It should be noted that actual carry out position adjustment time, in which kind of method of adjustment, no matter be intended to use fixture and from the outside of projector optical apparatus adjust within the position of projection optical unit.At this moment, when not using the projector optical apparatus as main part, the projection light reflected not only is blocked by fixture, and is the most also configured the lens of dioptric system, keeps the retainer etc. of lens to block.It should be noted that when using the projector optical apparatus as main part, have adjusted reflection angle, light will not be blocked.

It addition, to use premised on actually used projector optical apparatus carries out position adjustment, projector optical apparatus is configured to projection light when will not be blocked by fixture etc., exist be difficult to short range projection, projector optical apparatus becomes the problems such as maximization.

Therefore, when using reflective optics, it is desirable to work out and do not block reflection light and can carry out the projector optical apparatus of adjustment of lens position and possess the projector of such projector optical apparatus.

Summary of the invention

The present invention is that it can realize as manner below or application examples in order to solve completing at least partially in the problems referred to above.

[application examples 1] is according to should the projector optical apparatus of use-case, it is characterised in that possesses: the first optical system, has the multiple battery of lens along optical axis configuration；Second optical system, has reflecting mirror, reflects the light from described first optical system injection；And projection optics housing, housing described first optical system and described second optical system, described first optical system possesses: the first lens, in the plurality of battery of lens, is located most closely to the position of described second optical system side；First lens mount, has the resettlement section housing described first lens；And guide cylinder, housing described first lens mount, described first lens have the lens notch that local is cut in the side that the light reflected by described reflecting mirror passes through, and described resettlement section has: be positioned at the wall portion in the outside of described lens notch；And make the first peristome that first side with described lens notch opposite side of described first lens exposes, described wall portion is provided with the patent part making described lens notch expose, described guide cylinder is formed as making described first peristome and described patent part expose, described projection optics housing possesses the second peristome making described first peristome expose, further, described projection optics housing is configured to make described patent part expose.

According to such projector optical apparatus, first optical system possesses the first lens being positioned at most the second optical system side and the first lens mount housing the first lens, when the first optical system and the second optical system have been housed in projection optics housing, first lens make lens notch expose by patent part, and make to expose with the first side of lens notch opposite side by the first peristome.And, the wall portion of lens notch and the first lens mount is formed at the side that the light being reflected by a reflector passes through.Thus, the projection light being reflected by a reflector will not be blocked, and can realize short range projection, can utilize simultaneously the fixtures such as probe (プ ロ Block) realize along from lens notch towards the movement of the first lens of the first direction of the first side, the i.e. first lens relative to the position adjustment of optical axis.

Can be in as the projector optical apparatus of product while limit visual confirmation projects images as the projector optical apparatus of main part it is therefore not necessary to use, while carry out position adjustment such that it is able to the aberration suppression level directly and when securely maintaining adjustment.

[application examples 2] preferably, in the projector optical apparatus according to above-mentioned application examples, is also equipped with press section, and described press section has elasticity, and the described lens notch exposed from described patent part is pressed to described first peristome side.

According to such projector optical apparatus, it is possible to keeping the first lens between fixture and the press section that the first peristome inserts, the position adjustment of the first lens can be carried out by movable clamp.Thus, it is not necessary to insert fixture from lens notch side such that it is able to the projection light being reflected by a reflector is blocked in suppression further.

[application examples 3] preferably, in the projector optical apparatus according to above-mentioned application examples, described first lens have a pair second sides being positioned at the second direction intersected with first direction, described first direction is towards the direction of described first side from described lens notch, described resettlement section possesses a pair the 3rd peristomes, 3rd peristome described in a pair makes the second side described in a pair expose respectively, described guide cylinder is formed as making the 3rd peristome described in a pair expose, and described projection optics housing is configured to make the 3rd peristome described in a pair expose.

According to such projector optical apparatus, when the first optical system and the second optical system have been housed in projection optics housing, the first lens are in addition to lens notch and the first peristome, and also a pair second sides are exposed.Thereby, it is possible to the position adjustment of the first lens carried out in direction in the first direction and second direction.

[application examples 4] preferably, in the projector optical apparatus according to above-mentioned application examples, the 3rd peristome described in described first peristome, described second peristome and a pair is respectively structured as possessing two holes portion, two notch or hole portion and a notch.

According to such projector optical apparatus, it is possible to make two holes portion, two notch, hole portion and a notch insert two probes corresponding to a peristome, abut the side of lens respectively with two probes, therefore, it is possible to more stably keep lens.When the lens carrying out position adjustment are bigger or when there is weight, it is possible to play its effect especially.

[application examples 5] preferably, in the projector optical apparatus according to above-mentioned application examples, described resettlement section possesses for the first fixing peristome that fix described first lens, that make the side of described first lens expose, described guide cylinder is formed as making described first fixing peristome expose, and described projection optics housing possesses the second fixing peristome making described first fixing peristome expose.

According to such projector optical apparatus, it is possible to be such as filled with the allotter etc. of bonding agent from the second fixing insert with peristome, and it is injected laterally bonding agent via the first fixing peristome to the first lens exposed.Thereby, it is possible to inject bonding agent etc. to the gap between the side and resettlement section of lens, it is possible to the first lens are firmly secured to resettlement section.

[application examples 6] preferably, in the projector optical apparatus according to above-mentioned application examples, the plurality of battery of lens possesses the battery of lens of focusing (ォ カ ス is whole for Off).

According to such projector optical apparatus, when carrying out short range projection, it is possible to aberration variation focusing brought suppresses little.

[application examples 7] is according to should the projector of use-case, it is characterised in that possess: send the light supply apparatus of light；Optic modulating device according to light described in modulate image information；And the light after being modulated by described optic modulating device projected, projector optical apparatus described in any of the above-described application examples.

According to such projector, owing to possessing the projector optical apparatus that can maintain aberration suppression level when adjusting, therefore, it is possible to suppression aberration variation efficiently, improve the quality of projects images.

Accompanying drawing explanation

Fig. 1 is the axonometric chart of the occupation mode illustrating the projector according to present embodiment.

Fig. 2 is the schematic diagram of the optical unit of projector.

Fig. 3 is the axonometric chart of projector optical apparatus.

Fig. 4 is the fragmentary cross sectional view of projector optical apparatus.

Fig. 5 is the exploded perspective view of projector optical apparatus.

Fig. 6 is the exploded perspective view of projector optical apparatus.

Fig. 7 is the first battery of lens and the axonometric chart of the first lens mount.

Fig. 8 is the first battery of lens and the exploded perspective view of the first lens mount.

(a) and (b) of Fig. 9 is the optical axis direction sectional view illustrating press section, peristome, fixing peristome.

Figure 10 is to illustrate press section, peristome, fixing peristome, the sectional view in direction orthogonal with the optical axis.

Figure 11 is the first lens in the projector optical apparatus illustrating variation, the first lens mount and the axonometric chart of front side pressing component.

Reference

null1 ... projector、3 ... optical unit、5 ... projector optical apparatus、6 ... the first optical system、7 ... the second optical system、31 ... light supply apparatus、50 ... projection optical unit、51 ... projection optics housing、51A ... housing body、51B ... outer housing、53 ... light-passing board、61 ... the first lens mount、62 ... the second lens mount、63 ... the 3rd lens mount、64 ... the 4th lens mount、61P、62P、63P ... cam pin、65 ... guide cylinder、66 ... cam canister、71 ... reflecting mirror、73 ... upside pressing component (press section)、74 ... front side pressing component、351 ... liquid crystal panel (optic modulating device)、514 ... the second peristome、515 ... the 4th peristome、516 ... the second fixing peristome、613 ... rake、614 ... resettlement section、653 ... peristome、654 ... the 4th peristome、655 ... peristome、663、664、665 ... cam path、6141 ... patent part、6142 ... the first peristome、6143 ... the 3rd peristome、6145 ... the first fixing peristome、6521 ... craspedodrome groove、C ... optical axis、L1 ... the first battery of lens、L11 ... the first lens、L111 ... the first lens notch (lens notch)、L112 ... the second lens notch、L113 ... the 3rd lens notch、L2 ... the second battery of lens、L3 ... the 3rd battery of lens、L4 ... the 4th battery of lens.

Detailed description of the invention

Below, based on accompanying drawing, embodiment is described.

(embodiment)

(occupation mode of projector 1 and action)

Fig. 1 is the axonometric chart of the occupation mode illustrating the projector 1 according to present embodiment.It should be noted that projector 1 possesses the projector optical apparatus 5 according to present embodiment.

As it is shown in figure 1, the mode that the projector 1 of present embodiment is with bottom surface 1A as upside supports and is arranged in support means SD being located at wall W.Further, it is disposed in proximity to the position of projector 1 in the downside of the wall W arranging projector 1 as the screen SC of projection surface.

Projector 1 is the transmitting light by sending from light supply apparatus 31 according to modulate image information as the liquid crystal panel 351 of optic modulating device, and modulates the light device as image light by projector optical apparatus 5 (all with reference to Fig. 2) enlarging projection.It should be noted that projector 1 is projected, from the contrary lateral screen SC projection of bottom surface 1A, the image light (projection light) that the reflecting mirror 71 (figure with reference to after Fig. 2) of Optical devices 5 reflects.The projector 1 of present embodiment is configured to from closely carrying out, to screen SC, the so-called short focus type projector that projects with big picture (wide visual field angle).

(composition of the optical unit 3 of projector 1 and action)

Fig. 2 is the schematic diagram of the optical unit 3 of projector 1.Optical unit 3 control based on control portion (not shown) carries out action, forms image light according to image information.As shown in Figure 2, optical unit 3 possesses light supply apparatus 31 and illumination optics device 32, light supply apparatus 31 has illuminator 311 and reflector 312, and illumination optics device 32 has lens arra 321,322, polarization conversion element 323, overlapping lens 324 and parallelizing lens 325.And, optical unit 3 possesses color separated Optical devices 33 and relay optics 34, color separated Optical devices 33 have dichroic mirror 331,332 and reflecting mirror 333, and relay optics 34 has light incident side lens 341, relay lens 343 and reflecting mirror 342,344.

And, optical unit 3 possesses electro-optical device 35, electro-optical device 35 has three liquid crystal panels 351 as optic modulating device, and (liquid crystal panel of red light (R light) is 351R, the liquid crystal panel of green light (G light) is 351G, and the liquid crystal panel of blue light (B light) is 351B), 352, three emitting side Polarizers 353 of three light incident side Polarizers and the cross colour splitting prism 354 (Network ロ ス ダ イ Network ロ イ ッ Network プ リ ズ system) as color combination optics.Further, optical unit 3 possesses projector optical apparatus 5 and houses the optical component casing 36 of each Optical devices 31～35.

Optical unit 3 is by above-mentioned composition, through being separated into R light, G light, the light of three colors of B light by the light of illumination optics device 32 by color separated Optical devices 33 after sending from light supply apparatus 31.Further, modulate respectively according to image information by each color of light after separating at each liquid crystal panel 351, be formed as the modulation light of each color of light.The modulation light of each color of light is injected cross colour splitting prism 354 and is synthesized image light, by projector optical apparatus 5 enlarging projection to screen SC (Fig. 1) etc..It should be noted that above-mentioned each Optical devices 31～35 are used as the optical system of various general projector, therefore omit specific description.

(summary of projector optical apparatus 5)

Fig. 3 is the axonometric chart of projector optical apparatus 5.Fig. 4 is the fragmentary cross sectional view of projector optical apparatus 5.It should be noted that Fig. 3 is the schematic diagram of the projector optical apparatus 5 under the state after unloading the outer housing 51B being discussed below.

As shown in Figure 3, Figure 4, projector optical apparatus 5 is as projection optics system, and being configured to combine has the first optical system 6 (dioptric system) and the optical system of the second optical system 7 (reflective optics).The projector optical apparatus 5 of present embodiment makes the image light from cross colour splitting prism 354 injection reflect by the first optical system 6, and reflects in the second optical system 7 being made up of aspheric reflecting mirror 71 and be projected to screen SC.Multiple battery of lens that projector optical apparatus 5 possesses so that one or more lens are a battery of lens configure as the first optical system 6, these battery of lens along optical axis C.It should be noted that the projector optical apparatus 5 of present embodiment is configured to the projector optical apparatus of short focus, the first optical system 6 has the function of focus the image light injected (ォ カ ス is whole for Off).

It should be noted that for convenience of description, in the figure after Fig. 3, with image light inject projector optical apparatus 5 the first optical system 6 inject side as rear side, to penetrate the emitting side of image light as front side from the first optical system 6.Further, in the figure shown in Fig. 3, paper be arranged above upside, lower section is downside.Further left and right directions time, to observe towards the emitting side penetrating image light from the first optical system 6 as left side, right side suitably uses.Thus, in FIG, projector optical apparatus 5 is to arrange with state reverse up and down.It should be noted that this is the state reverse up and down of projector 1.

Projector optical apparatus 5 is roughly configured in addition to possessing the first optical system 6 and the second optical system 7, be also equipped with the substrate as device, receive the first optical system 6 and projection optics housing 51 of the second optical system 7；And the light-passing board 53 that the reflection light (projection light) making reflecting mirror 71 be reflected passes through.Further, projection optics housing 51 possesses and has peristome and collecting the first optical system 6 and housing body 51A of the second optical system 7 in upside；And cover the top of housing body 51A and keep the outer housing 51B of light-passing board 53.

Fig. 5, Fig. 6 are the exploded perspective views of projection optical unit 50 (the first optical system 6).It should be noted that Fig. 5 generally illustrates the front side in the first optical system 6, Fig. 6 generally illustrates the rear side in the first optical system 6.As shown in Fig. 4～Fig. 6, the first optical system 6 possesses guide cylinder 65, cam canister 66, the first battery of lens L1 configured successively from front side along optical axis C～the 4th battery of lens L4 and keeps first lens mount 61～the 4th lens mount 64 of corresponding battery of lens L1～L4 respectively.

After projector optical apparatus 5 has carried out optical treatment by the first optical system 6 to the image light injected from the 4th battery of lens L4, from the first battery of lens L1, the reflecting mirror 71 to the second optical system 7 penetrates, and reflects emitted image light by reflecting mirror 71 and penetrates as projection light to the top of the first battery of lens L1.It should be noted that the first battery of lens L1 in the first battery of lens L1～the 4th battery of lens L4 is positioned at the leading portion of the first optical system 6 penetrating light to reflecting mirror 71.

Housing body 51A of projection optics housing 51 includes: be configured at the flange 511 of light incident side end, from extended the first resettlement section 512 of flange 511 forward side and and second resettlement section 513 of forward side extension extended from the first resettlement section 512.It is rectangular shape that flange 511 is formed as during viewed in plan, and electro-optical device 35 is fixed on the rear end face of flange 511.Further, the central part of flange 511 has inserting hole 5111, keeps the rear side of the 4th lens mount 64 of the 4th battery of lens L4 to be inserted through this inserting hole 5111.

First resettlement section 512 is formed as in substantially cylindrical shape substantially semi-circular cylindrical cut on the upside of with central shaft as boundary, and it is internal houses first optical system 6.Further, at the front side of upper end, the rear side of the first resettlement section 512, extend in the lateral direction and be formed with fixed part 5121, for projector optical apparatus 5 being fixed on the fixed component (not shown) within projector 1.

Second resettlement section 513 is formed as on the tubular of forward side extension cut substantially semi-circular cylindrical (semicircular platforms shape) on the upside of with central shaft as boundary.Anterior end 5131 opening of the second resettlement section 513, reflecting mirror 71 is arranged on the inner surface near anterior end 5131.

As shown in Figure 4, the outer housing 51B of projection optics housing 51 is set to the anterior end 5131 from the second resettlement section 513 and substantially covers the centre position, front side of the first resettlement section 512 on the top of housing body 51A.Outer housing 51B is generally constructed to possess light-passing board maintaining part 521 and rake 522, light-passing board maintaining part 521 keeps the light-passing board 53 of the gular transparent allowing the projection light reflected by reflecting mirror 71 pass through with the angle substantially vertical with projection optical axis, rake 522 is formed with the angle not blocking the projection light through light-passing board 53, wherein, projection optical axis is the line at the center connecting projecting beam.It should be noted that outer housing 51B is screwed in the upper end of housing body 51A.It addition, by outer housing 51B is fixed on housing body 51A such that it is able to prevent light from the first optical system 6 injection etc. to External leakage.

As shown in Fig. 3～Fig. 6, guide cylinder 65 includes front side cylindrical portion 651 and rear side cylindrical portion 652.The side of craspedodrome groove 6521 through rear side cylindrical portion 652 and formed, form craspedodrome groove 6521 by cutting along the direction of optical axis C towards rear side from front side.It should be noted that the side in rear side cylindrical portion 652, on the circumferencial direction centered by optical axis C by 120 ° be equidistantly formed with three craspedodrome grooves 6521.Rearward end in rear side cylindrical portion 652 is formed with four fixed parts 6522, and fixed part 6522 has the screwed hole (not shown) for being screwed the first adjustment cylinder 67 being discussed below.Further, near the rear end of rear side cylindrical portion 652, highlighting in concentric circles and be formed with a fixed part 6523, fixed part 6523 has the screwed hole (not shown) for the fixing adjustment fixed component 70 being discussed below.

Be formed as not interfering the rake 522 of the outer housing 51B of the projection light from reflecting mirror 71 matchingly, front side cylindrical portion 651 be formed cutting top notch 6511.Front side cylindrical portion 651 covers the first lens mount 61 and the outer circumferential side of the second lens mount 62 protruding form from rear side cylindrical portion 652 forward side.It should be noted that guide cylinder 65 is screwed the inside in housing body 51A.

Cam canister 66 is formed as cylindric, the rear side cylindrical portion 652 of guide cylinder 65 insert embedding within it, cam canister 66 can rotate relative to guide cylinder 65 centered by optical axis C.Cam canister 66 is constituted by being formed as cylindric maintaining part 661.Inner peripheral surface in maintaining part 661 be formed from anterior end towards rear side along the direction of optical axis C cut gathering sill 662 and according to the rules path formed and limit the cam path 663,664,665 of the shift action of the first battery of lens L1～the 3rd battery of lens L3.It should be noted that the inner peripheral surface in maintaining part 661, on the circumferencial direction centered by optical axis C by 120 ° be formed with three gathering sills 662 and cam path 663,664,665 at equal intervals.

The outer peripheral face of cam canister 66 is formed with the fixed part 666 for fixing not shown rod unit.When focusing, cam canister 66 can be made to rotate relative to guide cylinder 65 by rotating rod unit and be adjusted.

As shown in Figure 4, the first battery of lens L1, the second battery of lens L2, the 3rd battery of lens L3 are respectively retained first lens mount the 61, second lens mount the 62, the 3rd lens mount 63, and it is inserted and is embedded in guide cylinder 65, is configured to move along optical axis C.Being formed with cam pin 61P, 62P, 63P on each lens mount 61,62,63, this cam pin 61P, 62P, 63P are sticked in the craspedodrome groove 6521 of guide cylinder 65 and the cam path 663,664,665 of cam canister 66.

Then, along with the rotation of cam canister 66, cam pin 61P, 62P, 63P are directed to the intersection point of craspedodrome groove 6521 and cam path 663,664,665, thus each lens mount 61,62,63 moves along optical axis C direction.

As shown in Figure 4, the 4th battery of lens L4 is maintained on the 4th lens mount 64.And, the 4th lens mount 64 is inserted via first adjustment cylinder the 67, second adjustment cylinder 68, adjustment ring 69 and is embedded in guide cylinder 65.Projector optical apparatus 5 carries out the focusing of image light by the movement of these battery of lens L1, L2, L3.

Explanation below constitutes composition and the assembling of each parts of projection optical unit 50 (the first optical system 6).

(the first battery of lens L1, the composition of the first lens mount 61)

First battery of lens L1 is made up of a non-spherical lens (the referred to as first lens L11).First lens L11 is the lens of the position being located most closely to the second optical system 7 side in multiple lens that the first optical system 6 is possessed.The shape of circular cutting when the first lens L11 has assigned position and the optical axis C in the upside of optical axis C flatly from viewed in plan.Further, have also along the left and right directions of the first lens L11 in the shape of assigned position perpendicular cuts.

First lens mount 61 possesses maintaining part 611 and the cam pin 61P keeping the first battery of lens L1.Maintaining part 611 is generally formed into cylindrical shape.It should be noted that the outer peripheral face top on front side of maintaining part 611 is formed with the rake 613 that the rake 522 with outer housing 51B mates.Anterior end in maintaining part 611 is formed with the resettlement section 614 housing the first lens L11.

It should be noted that the outer peripheral face of the cam pin 61P rear end periphery from maintaining part 611 is protrudedly formed laterally along the direction intersected with optical axis C.On the circumferencial direction centered by optical axis C by 120 ° be equidistantly provided with three cam pin 61P.Cam pin 61P is formed as the taper that leading section attenuates on the basis of cylinder.It should be noted that the first lens L11 discussed in detail below and the first lens mount 61.

(the second battery of lens L2, the composition of the second lens mount 62)

The cemented lens that second battery of lens L2 is engaged by the second lens L21 and the 3rd lens L22 is constituted, and the predetermined distance in the upside of optical axis C flatly cuts with optical axis C and forms.With the first lens mount 61 substantially in the same manner, the second lens mount 62 possesses and keeps the maintaining part 621 of the second battery of lens L2 and three cam pin 62P.Outer peripheral face top on front side of maintaining part 621 is formed with the stage portion 623 that the rake 522 with outer housing 51B mates.It should be noted that the second battery of lens L2 is maintained at the inner peripheral surface of the anterior end being formed with stage portion 623 of maintaining part 621 by rivet hot.

(the 3rd battery of lens L3, the composition of the 3rd lens mount 63)

3rd battery of lens L3 is made up of the 4th lens L31, the 5th lens L32, the 6th lens L33 these three lens, and the 4th lens L31 and the 5th lens L32 is the cemented lens engaged.With the first lens mount 61 substantially in the same manner, the 3rd lens mount 63 possesses and keeps the maintaining part 631 of the 3rd battery of lens L3 and three cam pin 63P.3rd battery of lens L3 is maintained on the assigned position of the inner peripheral surface on front side of maintaining part 631 by rivet hot.

(the 4th battery of lens L4, the composition of the 4th lens mount 64)

As shown in Fig. 4, Fig. 6, the 4th battery of lens L4 is made up of these nine lens of the 7th lens L41～the 15th lens L49.4th lens mount 64 is made up of the first division rack 641 and the second division rack 642 on the basis of aperture (not shown) position.First division rack 641 keeps the 7th lens L41 and the 8th lens L42, the second division rack 642 to keep aperture and the 9th lens L43 to the 15th lens L49.4th lens mount 64 has the flange 6421 to formation prominent with the direction that optical axis C intersects at the substantially the center of outer peripheral face of the second division rack 642.After being fixed on by each lens on the first division rack 641 and the second respective cylinder of division rack 642, carry out light axial adjustment (regulation of mental activities).Afterwards, bonding agent is utilized the first division rack 641 and the second division rack 642 to be fixed as one.

(guide cylinder 65 and the assembling of the 3rd lens mount the 63, second lens mount the 62, first lens mount 61)

As shown in Fig. 4～Fig. 6, during assembling, make the cam pin 63P of the 3rd lens mount 63 be sticked in the craspedodrome groove 6521 of guide cylinder 65 from front side at first, the 3rd lens mount 63 is inserted the inner surface of rear side cylindrical portion 652.Then, as the 3rd lens mount 63, make the cam pin 62P of the second lens mount 62 be sticked in craspedodrome groove 6521 from front side, the second lens mount 62 is inserted the inner surface of rear side cylindrical portion 652.Thus, as shown in Figure 4, the region (front area of maintaining part 631) of the maintaining part 631 of holding the 3rd battery of lens L3 of the 3rd lens mount 63 becomes the state of the inner peripheral surface on rear side of the maintaining part 621 inserting the second lens mount 62.

Then, as shown in Figure 4, as the second lens mount 62, make the cam pin 61P of the first lens mount 61 be sticked in craspedodrome groove 6521 from front side, the first lens mount 61 is inserted the inner surface of rear side cylindrical portion 652.Thus, the region (front area of maintaining part 621) of the maintaining part 621 of holding the second battery of lens L2 of the second lens mount 62 becomes the state of inner peripheral surface of the maintaining part 611 inserting the first lens mount 61.

Thus, first lens mount the 61, second lens mount the 62, the 3rd lens mount 63 becomes cam pin 61P, 62P, 63P engaging and is held in the state of guide cylinder 65.Further, the leading section of cam pin 61P, 62P, 63P becomes the prominent state of craspedodrome groove 6521 from guide cylinder 65.

(guide cylinder 65 and the assembling of cam canister 66)

Gathering sill 662 along cam canister 66 guides the leading section of prominent cam pin 61P, 62P, the 63P engaging first lens mount the 61, second lens mount the 62, the 3rd lens mount 63 being held in guide cylinder 65, inserts guide cylinder 65 from the front side of cam canister 66.Thus, the rear side cylindrical portion 652 of guide cylinder 65 is inserted in cam canister 66.Cam canister 66 can rotate relative to guide cylinder 65 centered by optical axis C.

(about the adjustment of the 4th lens mount 64 in projector optical apparatus 5)

4th lens mount 64 (the 4th battery of lens L4) is the battery of lens fixed in the first optical system 6, but, by rotating relative to guide cylinder 65 such that it is able to adjust (back focusing (バ ッ Network Off ォ カ ス is whole)) position relative to moveable first lens mount 61 to the 3rd lens mount 63 (the first battery of lens L1～the 3rd battery of lens L3).It should be noted that the parts for making the 4th lens mount 64 rotate are first adjustment cylinder the 67, second adjustment cylinder 68, adjustment ring 69, after adjustment, the parts that the 4th lens mount 64 is fixed on guide cylinder 65 in adjustment position are adjustment fixed components 70.

(first adjusts by the composition of cylinder 67)

As shown in Figure 5, Figure 6, the first adjustment cylinder 67 by cylindric maintaining part 671 and be formed at maintaining part 671 outer peripheral face and viewed in plan time be that the flange 672 of rectangle is constituted.The inner surface of maintaining part 671 is formed with thread groove 6711.It is respectively formed with hole portion 6721 in four corners of flange 672.The front side of maintaining part 671 is inserted from the rear end side of the rear side cylindrical portion 652 of guide cylinder 65, flange 672 is made to be connected to the rearward end of rear side cylindrical portion 652, the screw SC1 being inserted through the hole portion 6721 of flange 672 is screwed in the screwed hole (not shown) of fixed part 6522 provisioned in the rearward end of rear side cylindrical portion 652, thus the first adjustment cylinder 67 is fixed.

(second adjusts by the composition of cylinder 68)

As shown in Figure 6, the second adjustment cylinder 68 is configured to possess the maintaining part 681 of cylindrical shape, is formed at the protuberance 682 of the outer peripheral face rearward end of maintaining part 681, is formed at fixing projection 683 and the recess 684 of the inner peripheral surface rearward end being formed at maintaining part 681 of the front side of protuberance 682 on outer peripheral face.Fixing parallel with optical axis C by projection 683, and formed to prominent with the direction that optical axis C intersects, spaced set on the circumferencial direction centered by optical axis C.Further, the outer peripheral face of protuberance 682 is formed thread groove 6821, the outer peripheral face of the front side of maintaining part 681 is formed threaded portion 6811.

(adjusting by the composition of ring 69)

As shown in Figure 6, adjustment ring 69 possesses ring-type maintaining part 691 and fixed part 692, and fixed part 692 towards optical axis C extension and has peristome 6921 from the rearward end of maintaining part 691.Further, the inner peripheral surface of maintaining part 691 is formed with threaded portion 6911.

(adjusting by the composition of fixed component 70)

As shown in Figure 5, Figure 6, adjustment fixed component 70 is configured to possess fixing main body 701 and stator 702, fixing and formed by main body 701 substantially rectangular and with fixed part 6523 outer peripheral face along guide cylinder 65 curvature when viewed in plan, stator 702 extends on rear side of the rearward end mediad of fixing main body 701 and is formed to the low single order in optical axis C side.Fixing with the hole portion 7011 being circumferentially formed with slit-shaped in main body 701.Rear end at stator 702 is formed with the notch 7021 cut in the way of clamping the fixing projection 683 of the second adjustment cylinder 68 in rotation direction.

(the 4th lens mount 64 is to the assembling of guide cylinder 65)

First, insert embedding the 4th lens mount 64 finishing light axial adjustment from the rear side of the second adjustment cylinder 68, make the flange 6421 of the 4th lens mount 64 be positioned at the recess 684 of the second adjustment cylinder 68.Then, insert adjustment ring 69 (peristome 6921) from the rear side of the 4th lens mount 64, make the threaded portion 6911 of adjustment ring 69 screw up with the thread groove 6821 of the second adjustment cylinder 68.Thus, the 4th lens mount 64 is clamped by the second adjustment cylinder 68 and adjustment ring 69 and fixes.

Then, from front side, the 4th lens mount 64 clamped by the second adjustment cylinder 68 and adjustment ring 69 is inserted the maintaining part 671 of the first adjustment cylinder 67 of the rear end being fixed on guide cylinder 65.Afterwards, make the threaded portion 6811 of the second adjustment cylinder 68 screw up with the thread groove 6711 of the first adjustment cylinder 67, thus the 4th lens mount 64 is fixed on guide cylinder 65.

By above-mentioned assembling, it is assembled into projection optical unit 50 (the first optical system 6).It should be noted that to carry out the back focusing being discussed below, after this projection optical unit 50 is fixed on projection optics housing 51 (housing body 51A), carry out back focusing.

(back focusing (バ ッ Network Off ォ カ ス is whole) of the 4th lens mount 64)

As set forth above, it is possible to make the 4th lens mount 64 (the 4th battery of lens L4) rotate relative to guide cylinder 65 (the first adjustment cylinder 67).In the present embodiment, by making the 4th lens mount 64 rotate, the back focusing of projector optical apparatus 5 can be carried out.Projected the light (image light) injected from reduced side by projector optical apparatus 5, while the projects images of limit this projection of visuognosis, limit rotates the 4th lens mount 64 and carries out back focusing.

It should be noted that the maintaining part 691 holding on adjustment ring 69 rotates when rotating four lens mounts 64.By rotating adjustment ring 69, such that it is able to change the second adjustment cylinder 68 (threaded portion 6811) to screw up state relative to the first adjustment cylinder 67 (thread groove 6711).Its result, rotates relative to the first adjustment cylinder 67 (guide cylinder 65) including the second adjustment cylinder 68 and adjustment ring 69 the 4th lens mount 64 interiorly.

(the 4th lens mount 64 fixing)

When finishing the back focusing by the 4th lens mount 64, then, by adjustment fixed component 70, the 4th lens mount 64 is fixed on guide cylinder 65.Specifically, by the predetermined portion of the fixing fixed part 6523 being arranged on guide cylinder 65 by main body 701 of adjustment fixed component 70.At this moment, the state of any one projection during notch 7021 becomes the fixing projection 683 clamping the second adjustment cylinder 68.It should be noted that in the present embodiment, rotation pitch when rotating four lens mounts 64 is the pitch (30 ° of pitches) of fixing projection 683, is not any pitch.

Then, when the notch 7021 of adjustment fixed component 70 clamps fixing projection 683 of the second adjustment cylinder 68, screw SC2 is inserted through hole portion 7011, screws up with the screwed hole that has on the fixed part 6523 of guide cylinder 65.Thereby, it is possible to the 4th lens mount 64 is fixed on guide cylinder 65.

Fig. 7 is the first battery of lens L1 and the axonometric chart of the first lens mount 61.Fig. 8 is the first battery of lens L1 and the exploded perspective view of the first lens mount 61.It should be noted that Fig. 7, Fig. 8 are illustrated that the axonometric chart and exploded view observed from front side.Fig. 9 is the sectional view in the optical axis C direction illustrating press section, peristome, fixing peristome.It should be noted that, (a) of Fig. 9 basically illustrates press section (upside pressing component 73), first peristome the 6142, second peristome 514, peristome 653, and (b) of Fig. 9 basically illustrates press section (upside pressing component 73), the first fixing peristome 6145, second fixing peristome 516, peristome 655.Figure 10 is the sectional view illustrating press section, peristome, the fixing peristome direction orthogonal with optical axis C.With reference to Fig. 4～Figure 10, the position adjustment of the first lens L11 is described and fixes.

(composition of the first lens L11)

In the present embodiment, the first lens L11 is made up of the non-spherical lens of synthetic resin material.In the upside of optical axis C, the side passed through of the projection light that i.e. reflected by reflecting mirror 71, the nonintervention of the first lens L11 is cut in the horizontal direction from the upper area of the incident illumination of the second battery of lens L2.This part becomes the first lens notch L111 as lens notch.Further, in other words, the first lens notch L111 have as assigned position, the position of projection interference of light avoiding being reflected with reflecting mirror 71 carry out the shape cut.

Further, as shown in Figure 8, centered by optical axis C, vertically cut the nonintervention region from the left and right directions of the incident illumination of the second battery of lens L2 of the first lens L11.Using this part as the second lens notch L112.Further, the first lens L11 has the 3rd lens notch L113 cut in the horizontal direction in the opposition side of the first lens notch L111.Further, it is formed with the protuberance L114 owing to being formed for the mouth of a river of molding the first lens L11 (ゲ ト) at the 3rd lens notch L113.

(composition of the first lens mount 61)

As it has been described above, the first lens mount 61 possesses maintaining part 611 and the cam pin 61P keeping the first battery of lens L1.Maintaining part 611 is generally formed into cylindrical shape.It is formed with the rake 613 that the rake 522 with outer housing 51B mates on the outer peripheral face top of the front side of maintaining part 611.In other words, rake 613 by as assigned position, the position of projection interference of light avoiding being reflected with reflecting mirror 71 carry out the region cut.Further, the anterior end surface in maintaining part 611 is formed with the resettlement section 614 housing the first lens L11.

As shown in Figure 8, the front side of resettlement section 614 is open, and inner peripheral surface is formed as the shape similar to the outer peripheral face of the first lens L11, for housing the first lens L11 inserted from front side.The notch portion 617 from the recessed cut such shape of rake 613 it is formed with in the upside of resettlement section 614.It addition, notch portion 617 has the wall portion 617a being positioned at outside the first lens notch L111, the central part at this wall portion 617a is formed with the patent part 6141 of the part exposing the first lens notch L111.The rake 613 of the first lens mount 61 and notch portion 617 are contained in guide cylinder 65 (with reference to Fig. 3) from notch 6511 in the way of exposing.I.e., guide cylinder 65 is formed as making patent part 6141 expose.

As shown in Figure 8, resettlement section 614 is formed with, in the side of patent part 6141 with the coupling part of rake 613, the fixed part 615 that forward side highlights and accepts and fix the upside pressing component 73 being discussed below.With the hole portion 733 of the upside pressing component 73 being discussed below accordingly, fixed part 615 is formed with two screwed holes 6151.Further, resettlement section 614 is formed in anterior end surface 6146 and accepts and the fixed part 616 of the fixing front side pressing component 74 being discussed below.It addition, with the hole portion 743 of the front side pressing component 74 being discussed below accordingly, fixed part 616 is formed with three screwed holes 6161.

Resettlement section 614 is formed with the carrier 6147 uniformly extended to inner side.Further, carrier 6147 is formed with the continuing surface 6148 that multiple forward side is prominent.It should be noted that when the first lens L11 has been arranged at resettlement section 614, continuing surface 6148 becomes the face of the peripheral part of the rear side surface accepting the first lens L11, to limit the first lens L11 side shifting backward.

(composition of the first peristome the 6142, the 3rd peristome 6143)

As shown in Figure 8, resettlement section 614 possesses the first peristome 6142 making first side (surface of the 3rd lens notch L113) of the first lens L11 expose, and wherein, this first side is positioned at the opposite side of the first lens notch L111.Two holes portion that first peristome 6142 is configured to symmetrical relative to the vertical plane from optical axis C, has rectangular shape in the downside of resettlement section 614.Further, resettlement section 614 possess make left and right the second lens notch L112, i.e., be positioned at a pair the 3rd peristomes 6143 exposed with a pair second sides the second direction intersected towards the first direction of the first side from the first lens notch L111.It should be noted that as the first peristome 6142, the 3rd peristome 6143 is respectively formed as two holes portion with rectangular shape.

(composition of peristome the 653, second peristome 514)

As shown in Figure 9, Figure 10, guide cylinder 65 and projection optics housing 51 (housing body 51A) are formed as making the first peristome 6142 expose.Specifically, guide cylinder 65 has the peristome 653 exposing the first peristome 6142, and projection optics housing 51 has the second peristome 514 exposing the first peristome 6142.It should be noted that as the first peristome 6142, two holes portion that the peristome 653 of guide cylinder 65 is configured to symmetrical relative to the vertical plane from optical axis C, has rectangular shape.Second peristome 514 of projection optics housing 51 is also constituted in the same manner as the first peristome 6142.

(composition of the 4th peristome 654,515)

And, guide cylinder 65 and projection optics housing 51 (housing body 51A) possess two fourth peristomes relative with the 3rd peristome 6143 of left and right (be directed to the 4th peristome of cylinder 65 as the 4th peristome 654, using projection optics with the 4th peristome of housing 51 as the 4th peristome 515).As the 3rd peristome 6143, the 4th peristome 654 of guide cylinder 65 is formed at relative position, in the present embodiment, is formed at respect to the substantially symmetrical position of the vertical of optical axis C.Further, the 4th peristome 654 is respectively formed as two holes portion with rectangular shape.4th peristome 515 of projection optics housing 51 is also constituted in the same manner as the 3rd peristome 6143.

(first is fixing by the composition of peristome 6145)

The first lens L11 after adjusting for fixed position, resettlement section 614 possesses the fixing peristome 6145 of make the side of the first lens L11 expose multiple first.In further detail, as shown in Fig. 8, Figure 10, multiple first fixing is formed as hole portion with peristome 6145 in the upside of the first lens L11 and downside.Specifically, the first of upside is fixing is provided with two with peristome 6145, is arranged to make the first lens notch L111 expose with the side in the corner of the second lens notch L112 of left and right respectively.The first of downside is fixing is configured to a rectangular opening portion with peristome 6145, makes the side of the 3rd lens notch L113 side expose.

(second is fixing by peristome 516, the composition of peristome 655)

As shown in Figure 10, guide cylinder 65 has the peristome 655 of the first fixing peristome 6145 exposing downside, and projection optics housing 51 (housing body 51A) has the second fixing peristome 516 exposing the fixing peristome 6145 of first on the downside of this.The first of upside is fixing to expose in outer housing 51B is not yet installed on the projector optical apparatus 5 (with reference to Fig. 3) of housing body 51A with peristome 6145.So, guide cylinder 65 is formed as making first to fix and exposes with peristome 6145, and projection optics housing 51 possesses the second fixing peristome 516 making the first fixing peristome 6145 of downside expose.

(composition of press section (upside pressing component 73))

As shown in Figure 8, the first lens mount 61 possessing the upside pressing component 73 as press section, on the upside of this, pressing component 73 has elasticity, and on the direction being approximately perpendicular to optical axis C, pressing becomes the first lens notch L111 of the upside of the first lens L11.Upside pressing component 73 is formed by the bending machining of metallic plate.Upside pressing component 73 is by the article body 731 during viewed in plan being rectangle and extends downwards from the both ends of article body 731 and is bent to form and has resilient two spring 732 and constitute.Further, the both ends in article body 731 are formed with the hole portion 733 for screw SC3 is inserted through.

(composition of front side pressing component 74)

As shown in Figure 8, the first lens mount 61 possessing front side pressing component 74, front side pressing component 74 has elasticity, with the front side surface that optical axis C presses the first lens L11 substantially in parallel.Front side pressing component 74 is formed by the bending machining of metallic plate.The article body 741 of substantially U-shaped when front side pressing component 74 possesses that the flat shape with the first lens L11 matches, viewed in plan.Further, front side pressing component 74 possesses at the foot of article body 741 and both ends, upside and extends to inner side and be bent to form and have resilient three spring 742.Further, it is respectively formed with the hole portion 743 for screw SC4 is inserted through near the spring 742 of article body 741.

(the first lens L11 is to the assembling of the first lens mount 61)

During assembling, at first upside pressing component 73 is arranged at the fixed part 615 of the first lens mount 61.Afterwards, the hole portion 733 of pressing component 73 on the upside of screw SC3 is inserted by front side so that it is screw up with the screwed hole 6151 of fixed part 615, upside pressing component 73 is fixed on fixed part 615.

Then, from front side, the first lens L11 is inserted the resettlement section 614 of the first lens mount 61.At this moment, the inserting by pressure of the spring 732 of pressing component 73 on the upside of opposing.Thus, the first lens L11 becomes the first lens notch L111 exposed from patent part 6141 by the spring 732 of upside pressing component 73 state that (the first peristome 6142 side) presses downwards.In other words, the first lens L11 becomes by upside pressing component 73 to the state (being perpendicular on the direction of the side of the first lens notch L111 the state that is elastically stressed) pressed with optical axis C generally perpendicular direction elasticity.

Then, the front side surface at the first lens L11 arranges front side pressing component 74.Afterwards, the hole portion 743 of pressing component 74 on front side of screw SC4 is inserted by front side so that it is screw up with the screwed hole 6161 of anterior end surface 6146.Thus, by the spring 742 of front side pressing component 74, the peripheral part making the rear side surface of the first lens L11 abuts with continuing surface 6148, and by pressing the peripheral part of the front side surface of the first lens L11 substantially in parallel to rear side with optical axis C direction, thus before and after the first lens L11, direction is fixed.

By assembled above, as shown in Fig. 7, Fig. 9, Figure 10, the first lens L11 becomes above-below direction and fore-and-aft direction to be fixed and is housed in the state in resettlement section 614.

(position adjustment of the first lens L11)

It has been installed on housing body 51A in the first optical system 6 and the second optical system 7 (reflecting mirror 71), and outer housing 51B is not yet installed under the state (with reference to Fig. 3) of housing body 51A, adjust the first lens L11 position relative to optical axis C.In projector optical apparatus 5, when carrying out the position adjustment of the first lens L11, as it is shown on figure 3, patent part 6141 is exposed, as shown in Figure 10, the first peristome 6142 and a pair the 3rd peristomes 6143 expose.So, guide cylinder 65 is formed as making patent part 6141 and the first peristome 6142 and a pair the 3rd peristomes 6143 expose.It addition, projection optics housing 51 has the second peristome 514 making the first peristome 6142 expose, and it is configured to make a pair the 3rd peristomes 6143 and patent part 6141 expose.

Reflected by reflecting mirror 71 and project the light (image light) that is incident upon projection optical unit 50 (the first optical system 6) from reduced side, while the projects images of limit this projection of visual confirmation, while the first lens L11 that moves up and down is to carry out position adjustment.By carrying out the position adjustment of the first lens L11, thus correct the aberrations such as the filed curvature of projects images.

(composition of position adjustment fixture)

In the present embodiment, position adjustment fixture possesses moveable first probe (not shown), the side of the 3rd lens notch L113 by making the first probe and be formed on the downside of the first lens L11 abuts, thus the first lens L11 that makes by pressure resisting upside pressing component 73 is moved upward.And, in the present embodiment, position adjustment fixture possesses moveable second probe (not shown), and the second lens notch L112 of the left and right sides by making the second probe and be formed at the first lens L11 abuts, thus moves the first lens L11 in the lateral direction.

First probe is made up of the probe (not shown) not possessing compression helical spring.Further, with two the first peristomes 6142 accordingly, the first probe is made up of two probes.It should be noted that the amount of movement of two probes is adjusted to uniformly.

Second probe is made up of the probe (not shown) possessing compression helical spring and the probe (not shown) not possessing compression helical spring.In the present embodiment, for the second lens notch L112, second probe is by possessing the side of the second lens notch L112 on the left of the probe pressing of compression helical spring, by not possessing the side of the second lens notch L112 on the right side of the probe pressing of compression helical spring.

In the present embodiment, with two the 3rd peristomes 6143 in left side accordingly, the probe possessing compression helical spring in the second probe is made up of two probes.It should be noted that two respective compositions of probe are identical, press the side of the second lens notch L112 in left side to the right.With two the 3rd peristomes 6143 on right side accordingly, the probe not possessing compression helical spring is made up of two probes.It addition, the amount of movement of two probes is adjusted to uniformly.

So, the first probe, the second probe are configured to press at two the side of identical notch when notch (the 3rd lens notch L113, the second lens notch L112) of the first lens L11 of pressing correspondence.In other words, the first peristome 6142 and the 3rd peristome 6143 are made up of two holes portion, in order to can press the side of identical notch at two when being pressed the notch of the first lens L11 by fixture (probe).

(setting of fixture)

As shown in Figure 10, two probes are inserted through the second peristome 514 guide cylinder 65 being respectively formed at projection optics housing 51 (housing body 51A) and inner side, peristome 653, and the first peristome 6142 being inserted through on the resettlement section 614 being formed at the first lens mount 61 by the first probe respectively from the outside of projector optical apparatus 5.Afterwards, the front end of each probe is made to abut with the side of exposing of the 3rd lens notch L113 of the first lens L11.

Thus, the first lens L11 becomes the side of the first lens notch L111 by the elastic pressing of upside pressing component 73 (two spring 732), the state that the 3rd lens notch L113 is pressed at two by the first probe.Thereby, it is possible to keep the first lens L11 between the first probe and relative upside pressing component 73.

As shown in Figure 10, the two of left side probes are inserted through the 4th peristome 515,654 in the left side being formed at projection optics housing 51 (housing body 51A) and guide cylinder 65, and the 3rd peristome 6143 in the left side being inserted through on the resettlement section 614 being formed at the first lens mount 61 by the second probe respectively from the outside of projector optical apparatus 5.Afterwards, the front end of each probe is made to abut with the side of exposing of the second lens notch L112 in the left side of the first lens L11.

And, as shown in Figure 10, the two of right side probes are inserted through the 4th peristome 515,654 on the right side being formed at projection optics housing 51 (housing body 51A) and guide cylinder 65, and the 3rd peristome 6143 on the right side being inserted through on the resettlement section 614 being formed at the first lens mount 61 by the second probe respectively from the outside of projector optical apparatus 5.Afterwards, the front end of each probe is made to abut with the side of exposing of the second lens notch L112 on the right side of the first lens L11.

Thus, the first lens L11 becomes the second lens notch L112 in left side and is pressed by two the second probe elasticity possessing compression helical spring, and the second lens notch L112 on right side is not possessed the state of two the second probe pressings of compression helical spring.Thereby, it is possible to keep the first lens L11 between relative the second probe (the second probe of left and right).

(by the fixture adjustment to the first lens L11)

Position adjustment fixture is set as described above, thus is kept the notch (the first lens notch L111, the 3rd lens notch L113) of the above-below direction of the first lens L11 by upside pressing component 73 and the first probe.Further, the notch (the second lens notch L112 of left and right) of the left and right directions of the first lens L11 is kept by the second probe.

In further detail, in the position adjustment of the first lens L11, by changing the adjustment that the amount of movement of the first probe carries out the above-below direction of the first lens L11, carried out the adjustment of the left and right directions of the first lens L11 by the amount of movement of the second probe not possessing compression helical spring on the right side of changing.It should be noted that as it has been described above, while the visual confirmation projects images of limit, while carry out position adjustment, adjust to the position not having the aberrations such as filed curvature.

(the first lens L11 fixing to the first lens mount 61 (resettlement section 614))

When finishing position adjustment, after this adjustment, the first lens L11 is fixed on the first lens mount 61 (resettlement section 614).In the present embodiment, the bonding agent of ultraviolet hardening is used to be fixed.

Although the most how, but in the present embodiment, first resettlement section 614 is fixed in the side (raised face L114) of the 3rd lens notch L113 of the downside as the first lens L11.Specifically, the second fixing peristome 516, peristome 655 of the downside being formed at projection optics housing 51 (housing body 51A) and guide cylinder 65 is inserted in the leading section of the allotter that the outside from projector optical apparatus 5 will be filled with bonding agent.Afterwards, bonding agent is injected with peristome 6145 to the side (raised face L114) of the 3rd lens notch L113 exposed from fixing with the first of the 3rd relative resettlement section 614 formed of lens notch L113.

Then, resettlement section 614 is fixed in the corner of the first lens notch L111 and the second lens notch L112 of the first lens L11.Here, when projection optical unit 50 being arranged at the projection optics housing 51 (housing body 51A) being not provided with outer housing 51B being upper, the upside of the resettlement section 614 of the first lens mount 61 is open state (exposing state).Therefore, it is also open state that two first of the upper side corner sections being positioned at resettlement section 614 fix with peristome 6145.Therefore, directly the leading section of allotter is inserted two first fixing peristomes 6145 of the upper side corner sections being positioned at resettlement section 614, be injected laterally bonding agent to the first lens L11 exposed respectively.

As it has been described above, by injecting bonding agent, thus bonding agent is injected into the gap between side and the inner surface of resettlement section 614 of the first lens L11.Afterwards, to the bonding agent irradiation ultraviolet radiation injected, bonding agent is made to solidify.By above operation, the inner surface of the side of the first lens L11 and the resettlement section 614 of the first lens mount 61 is fixed by bonding agent, and the first lens L11 is fixed on the first lens mount 61.

It should be noted that carried out the first lens L11 position adjustment and fixing after, be arranged at housing body 51A from upside by the outer housing 51B being provided with light-passing board 53, thus complete projector optical apparatus 5.Further, touch the fixing peristome 516 of the second peristome 514, second of housing body 51A with adhesive tape and the 4th peristome 515 is closed.

According to above-mentioned embodiment, following effect can be obtained.

Projector optical apparatus 5 according to present embodiment, the first battery of lens L1 of the leading portion penetrating the first optical system 6 of light to reflecting mirror 71 possesses and can comprise other multiple battery of lens and carry out the lens (the first lens L11) of final position adjustment interiorly.It addition, this first lens L11 and the first lens mount 61 as assigned position, avoid possessing the first lens notch L111 and rake 613 of a cut part with the position of the projection interference of light reflected by reflecting mirror 71.And, by upside pressing component 73 elastic pressing first lens notch L111 on substantially vertical with optical axis C direction.It should be noted that, the first peristome 6142 making the side of the threeth lens notch L113 relative for lens notch L111 with first expose is possessed on resettlement section 614, such that it is able to the first probe adjusted with the second peristome 514 on position of housing 51 from peristome 653 and the projection optics of guide cylinder 65 so that it is abut via the side of the first peristome 6142 with the 3rd lens notch L113.To this end, the first lens L11 can be kept between this first probe and relative upside pressing component 73, move (position adjustment) first lens L11 by mobile first probe.According to this composition, it is not necessary to insert probe from the direction (optical path direction of reflection light) of the first lens notch L111 such that it is able to prevent fixture from blocking reflection light.

Therefore, it is possible to when using the second optical system 7 possessing reflecting mirror 71, it is achieved do not block the projector optical apparatus 5 that reflection light can carry out the position adjustment of the first lens L11.Further, while not using the projector optical apparatus 5 as product can be used as the projector optical apparatus of main part to carry out limit visual confirmation projects images, while carry out position adjustment, therefore, it is possible to the suppression level of the aberration directly and when securely maintaining adjustment.

Projector optical apparatus 5 according to present embodiment, the 3rd peristome 6143 of resettlement section 614 is formed as exposing the side (side of the second lens notch L112) of the first lens L11 in relative position.Thus, when carrying out the position adjustment of the first lens L11, in addition to the first peristome 6142, additionally the second probe is inserted the 3rd peristome 6143, it is thus possible to keep the first lens L11 more evenly, it is possible to stably move (adjustment) first lens L11.Further, guide cylinder 65 and projection optics housing 51 possess fourth peristome 654,515 that formed relative with the 3rd peristome 6143 such that it is able to insert the second probe from the outside of projector optical apparatus 5.

Projector optical apparatus 5 according to present embodiment, in each peristome (first peristome the 6142, second peristome 514, peristome 653, the 3rd peristome 6143 of left and right, the 4th peristome 515,654 of left and right), a peristome is configured to two holes portion.Thus, it is inserted correspondingly into two probes with this two holes portion, it is possible to make the side of the first lens L11 abut with two probes respectively, thus compared with when abutting with a probe, it is possible to stably keep the first lens L11.According to this composition, in the case of the lens of position adjustment to be carried out are relatively big or in the case of there is weight, it is possible to play its effect especially.

Projector optical apparatus 5 according to present embodiment, resettlement section 614 possesses the first fixing peristome 6145, guide cylinder 65 with projection optics housing 51 possess peristome 655, the second fixing peristome 516 relative with the first fixing peristome 6145.Thereby, it is possible to be filled with the allotter of bonding agent from fixing insert with peristome 516 of peristome 655, second, and fixing it is injected laterally bonding agent with peristome 6145 to the first lens L11 exposed via first.Accordingly, for finishing the projector optical apparatus 5 of position adjustment, bonding agent can be injected in the gap between side and the resettlement section 614 of lateral the first lens L11, it is possible to reliably the first lens L11 is fixed on resettlement section 614.

Projector optical apparatus 5 according to present embodiment, possess the first optical system 6 and the second optical system 7 as projection optics system, first battery of lens L1 to the 3rd battery of lens L3 is structured to focusing, when carrying out short range projection, it is possible to suppress the aberration variation brought by focusing for less.

Projector 1 according to present embodiment, possesses the projector optical apparatus 5 of aberration suppression level when being able to maintain that adjustment, therefore, it is possible to suppression aberration variation efficiently, it is possible to increase the quality of projects images.

It should be noted that and be not limited to above-mentioned embodiment, without departing from the spirit and scope of the present invention, various change, improvement etc. can be carried out and be carried out.Variation is as described below.

The projector optical apparatus 5 of above-mentioned embodiment possesses press section (upside pressing component 73) but it also may be configured to not possess press section.

Figure 11 is the first lens L11 in the projector optical apparatus illustrating and not possessing press section, the first lens mount 161 and the axonometric chart of front side pressing component 174.

As shown in figure 11, the first lens mount 161 in this variation has and makes otch 1611 that the first lens notch L111 of the first lens L11 exposes, as patent part.Although not shown, but the projector optical apparatus of variation has the guide cylinder 65 with above-mentioned embodiment and the identical guide cylinder of projection optics housing 51 and projection optics housing, the first lens mount 161 has first peristome identical with the first peristome the 6142, the 3rd peristome 6143 in the first lens mount 61 of above-mentioned embodiment, the 3rd peristome.It addition, adjusted the position of the above-below direction of the first lens L11 by the probe inserted from otch 1611 and the first peristome.Further, bend to L-shaped from the front end of the probe of otch 1611 insertion, be formed as blocking the projection light reflected by reflecting mirror 71.It should be noted that the adjustment of the left and right directions of the first lens L11 is carried out in the same manner as above-mentioned embodiment.

Front side pressing component 74 in above-mentioned embodiment possesses three spring 742, and forms as one, but as shown in figure 11, it is also possible to it is that split is formed, the form being made up of three front side pressing components 174 with common shape.

In the projector optical apparatus 5 of above-mentioned embodiment, guide cylinder 65 is formed with the peristome 653 making the first peristome 6142 of resettlement section 614 expose but it also may be configured to resettlement section 614 and protrude from guide cylinder 65, to expose the first peristome 6142.

In the projector optical apparatus 5 of above-mentioned embodiment, guide cylinder 65 is formed with the 4th peristome 654 making the 3rd peristome 6143 of resettlement section 614 expose but it also may be configured to resettlement section 614 and protrude from guide cylinder 65, to expose the 3rd peristome 6143.

And, the 4th peristome 515 making the 3rd peristome 6143 of resettlement section 614 expose it is formed with in housing body 51A, but the wall making housing body 51A can also be configured to and decline (leaving optical axis C in the vertical direction) to downside, to expose the 3rd peristome 6143.

In the projector optical apparatus 5 of above-mentioned embodiment, resettlement section 614 has the 3rd peristome 6143 but it also may be the resettlement section without the 3rd peristome 6143.

In the projector optical apparatus 5 of above-mentioned embodiment, each peristome (first peristome the 6142, second peristome 514, peristome 653, the 3rd peristome 6143 of left and right, the 4th peristome 515,654 of left and right) is configured to a peristome and possesses two holes portion.It is however not limited to two holes portion, it is also possible to it is configured to possess two notch, hole portion and a notch.

In the projector optical apparatus 5 of above-mentioned embodiment, each peristome (first peristome the 6142, second peristome 514, peristome 653, the 3rd peristome 6143 of left and right, the 4th peristome 515,654 of left and right) is configured to a peristome and possesses two holes portion.It is however not limited to two holes portion, it is also possible to it is configured to possess hole portion.Further, hole portion it is not limited to, it is also possible to be configured to possess a notch.

In the projector optical apparatus 5 of above-mentioned embodiment, fix with peristome 6145 relatively with the first of resettlement section 614, guide cylinder 65 is formed peristome 655, projection optics housing 51 (housing body 51A) is formed the second fixing peristome 516.But, the second fixing peristome cannot be formed on both sides sometimes due to guide cylinder 65, the shape etc. of projection optics housing 51, therefore, it can be positioned at and either component (guide cylinder 65, projection optics housing 51) upper formation the second fixing peristome on the first fixing position relative with peristome 6145.

As it is shown in figure 1, the projector 1 of above-mentioned embodiment is arranged on wall W by the way of support means SD is with bottom surface 1A as upside, to the screen SC projection projects images being located on the downside of projector 1.But, do not limit the set-up mode of projector 1, it is also possible to be located at ceiling face, ground, desktop etc. and project to the screen SC being located at wall W.And, it is also possible to projector 1 is set on the table and projects to same desktop.

In the projector 1 of above-mentioned embodiment, electro-optical device 35 have employed and uses corresponding to R light, G light, the so-called three-chip type (3 plate mode) of three optic modulating devices of B light.But, it is not limited to this, it would however also be possible to employ the optic modulating device of one chip.And, it is also possible to add the optic modulating device used for improving contrast.

In the projector 1 of above-mentioned embodiment, electro-optical device 35 have employed through mode optic modulating device (through mode liquid crystal panel 351).But, it is not limited to this, it would however also be possible to employ reflecting light modulating device.

In the projector 1 of above-mentioned embodiment, electro-optical device 35 have employed liquid crystal panel 351 as optic modulating device.But, it is not limited to this, is generally based on the device of image signal modulation incident beam, such as, can use micro mirror formula optic modulating device etc., the optic modulating device of alternate manner.It should be noted that as micro mirror formula optic modulating device, such as, can use DMD (DigitalMicromirrorDevice: DMD).

In the projector 1 of above-mentioned embodiment, optical unit 3 have employed the illumination optics device 32 of the uniform-illumination of the light beam that the integration lens optical system being made up of lens arra 321,322 sends from light supply apparatus 31 as realization.But, it is not limited to this, it would however also be possible to employ the integrating rod optical system being made up of guide-lighting bar.

In the optical unit 3 of the projector 1 of above-mentioned embodiment, the illuminator 311 of light supply apparatus 31 have employed the discharge lamps such as extra-high-pressure mercury vapour lamp but it also may uses laser diode, LED (LightEmittingDiode: light emitting diode), organic EL (ElectroLuminescence: electroluminescent) the various solid-state light emitting elements such as element, silicon light-emitting component.

Claims (7)

1. a projector optical apparatus, it is characterised in that possess:

First optical system, has the multiple battery of lens along optical axis configuration；

Second optical system, has reflecting mirror, reflects the light from described first optical system injection；And

Projection optics housing, houses described first optical system and described second optical system,

Described first optical system possesses:

First lens, in the plurality of battery of lens, are located most closely to the position of described second optical system side；

First lens mount, has the resettlement section housing described first lens；And

Guide cylinder, houses described first lens mount,

Described first lens have the lens notch that local is cut in the side that the light reflected by described reflecting mirror passes through,

Described resettlement section has:

It is positioned at the wall portion in the outside of described lens notch；And

Make the first peristome that first side with described lens notch opposite side of described first lens is exposed,

Described wall portion is provided with the patent part making described lens notch expose,

Described guide cylinder is formed as making described first peristome and described patent part expose,

Described projection optics housing possesses the second peristome making described first peristome expose, and, described projection optics housing is configured to make described patent part expose.

Projector optical apparatus the most according to claim 1, it is characterised in that described projector optical apparatus is also equipped with:

Press section, described press section has elasticity, and the described lens notch exposed from described patent part is pressed to described first peristome side.

Projector optical apparatus the most according to claim 1 and 2, it is characterised in that

Described first lens have a pair second sides being positioned at the second direction intersected with first direction, and described first direction is from described lens notch towards the direction of described first side,

Described resettlement section possesses a pair the 3rd peristomes, and the 3rd peristome described in a pair makes the second side described in a pair expose respectively,

Described guide cylinder is formed as making the 3rd peristome described in a pair expose,

Described projection optics housing is configured to make the 3rd peristome described in a pair expose.

Projector optical apparatus the most according to claim 3, it is characterised in that

3rd peristome described in described first peristome, described second peristome and a pair is respectively structured as possessing two holes portion, two notch or hole portion and a notch.

Projector optical apparatus the most according to any one of claim 1 to 4, it is characterised in that

Described resettlement section possesses for the first fixing peristome that fix described first lens, that make the side of described first lens expose,

Described guide cylinder is formed as making described first fixing peristome expose,

Described projection optics housing possesses the second fixing peristome making described first fixing peristome expose.

Projector optical apparatus the most according to any one of claim 1 to 5, it is characterised in that

The plurality of battery of lens possesses the battery of lens of focusing.

7. a projector, it is characterised in that possess:

Send the light supply apparatus of light；

Optic modulating device according to light described in modulate image information；And

Projector optical apparatus that light after being modulated by described optic modulating device is projected, according to any one of claim 1 to 6.