CN105824110B - Projector optical apparatus and projecting apparatus - Google Patents

Abstract

The present invention provides the projector optical apparatus and projecting apparatus of the position adjustment for the lens that dioptric system can be carried out in the state of dioptric system and reflective optics is configured with.The dioptric system of projector optical apparatus (5) possesses the first lens mount (61) most positioned at the first lens (L11) of reflective optics side and with the receiving portion (614) for accommodating the first lens (L11) in multiple lens groups.First lens (L11) reflected light by one side there is lens notch, first opening portion exposed with the side of lens notch opposite side that receiving portion (614) have the wall portion (617a) being located on the outside of lens notch and make the first lens (L11).Wall portion (617a) is equipped with the opening portion (6141) for exposing lens notch, guide cylinder (65) is formed as exposing the first opening portion and opening portion (6141), projection optics housing (51) possesses the second opening portion for exposing the first opening portion, is configured to expose opening portion (6141).

Description

Projector optical apparatus and projecting apparatus

Technical field

The present invention relates to projector optical apparatus and projecting apparatus.

Background technology

At present it is known that favorably the light (transmitting light) sent from light source is adjusted according to image information with optic modulating device System, and pass through the projecting apparatus of the projector optical apparatus enlarging projection light.Also, exist in projecting apparatus from closely with wide visual field The projecting apparatus that the projection surfaces such as angular screen are projected.In such projecting apparatus, as can closely carry out wide visual field angle The projector optical apparatus of projection employs the projector optical apparatus of short focus.It should be noted that in recent years, as near Projection optics system apart from wide visual field angle projection, catadioptric complex optics have been used together with dioptric system.

A kind of projection imaging optical system of following compositions is disclosed in patent document 1, fixation is employed as one kind The optical system of lens section, moving lens portion and concave mirror is reducing the skew ray beam tiltedly projected compared with the gradient of optical axis Meanwhile it is effectively prevented lens barrel and blocks (ケ ラ レ) imaging beam.

Look-ahead technique document Prior Art

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2011-85922 publications

From projection optics system when closely projecting (short range projection) with wide field angle, filled from projection optics It is very near to put the distance of screen, therefore, compared with general projector optical apparatus, aberration caused by focusing changes bigger. It is spherical lens, the composition of non-spherical lens for employing multiple high sensitivity, with one also, in projection optics system As projector optical apparatus compare, the deviation of the installation position of each lens carrys out very big influence to the wave zone of aberration.It throws as a result, Penetrate in image on the screen be also easy to produce filed curvature, aberration change caused by contrast decline etc., exist and figure be greatly reduced The problem of image quality amount.For this purpose, in assembling lens group, it is necessary to strongly inhibit the deviation of the installation position of each lens；In assembling After must carry out pH effect；Etc..

It should be noted that in the situation for the projector optical apparatus for employing dioptric system and reflective optics Under, when carrying out the adjustment of lens position after assembling, such as projection image, side visuognosis are often projected by speculum While the projection image projected, the position of the lens of side adjustment dioptric system.

As method of adjustment in this case, consideration has a kind of following method, i.e., used as main part (マ ス タ ー) projector optical apparatus (here, device possess speculum but do not possess form dioptric system projection optics list Member is only used as benchmark use), in the projector optical apparatus projection optical unit that position is wanted to adjust is set to come into row position tune It is whole.At this moment, need to re-assembly after projection optical unit is unloaded from the projector optical apparatus as main part after the adjustment The projector optical apparatus actually used (here, device possesses speculum, does not possess the projection for forming dioptric system simply Optical unit) on.But the projector optical apparatus and actual projector optical apparatus as main part are different devices, are existed Deviation in assembling, even if so as to which used as the projector optical apparatus of main part aberration can be inhibited, but re-assembly for Generation aberration is also possible that during the projector optical apparatus of reality.

For such case, consideration has a kind of other methods of adjustment, i.e., without using the projection optics dress as main part It puts, but the projection optical unit that will be adjusted into row position is assembled in the projector optical apparatus for being practically used as product, Projection optical unit is adjusted into row position inside it.It at this moment, can be with adjustment without dismantling the projection optical unit after adjusting When similarly inhibit aberration.

It should be noted that when reality is adjusted into row position, no matter be intended in which kind of method of adjustment using fixture and From the position of the projection optical unit inside the adjustment of the outside of projector optical apparatus.At this moment, when the projection for not being employed as main part During Optical devices, the projection light reflected is not only blocked by fixture, but also is also configured the lens of dioptric system sometimes, is protected Retainer of lens etc. is held to block.It should be noted that when being employed as the projector optical apparatus of main part, angle of reflection is had adjusted Degree, light will not be blocked.

In addition, to be adjusted to premise into row position using the projector optical apparatus actually used, by projector optical apparatus Be configured to projection light will not by fixture when blocking, exist be difficult to realize short range projection, projector optical apparatus becomes to maximize The problems such as.

Therefore, when using reflective optics, it is desirable to work out and not block reflected light and can carry out the tune of lens position Whole projector optical apparatus and the projecting apparatus for possessing such projector optical apparatus.

The content of the invention

The present invention be to solve the above-mentioned problems at least a portion and complete, can as following mode or Application examples and realize.

[application examples 1] is according to the projector optical apparatus of the application example, which is characterized in that possesses：First optical system, has The multiple lens groups configured along optical axis；Second optical system, have speculum, to from the light that first optical system projects into Row reflection；And projection optics housing, accommodate first optical system and second optical system, first optics System possesses：First lens in the multiple lens group, are located most closely to the position of the second optical system one side；The One lens mount has the receiving portion for accommodating first lens；And guide cylinder, collecting first lens mount, described first Lens by the light that the speculum reflects by one side have and local be removed the lens notch formed, the receiving portion Have：Wall portion positioned at the outside of the lens notch；And make the opposite with the lens notch of first lens The first opening portion that the first side of one side is exposed, the wall portion are equipped with the opening portion for exposing the lens notch, institute Stating guide cylinder is formed as making first opening portion and the opening portion to expose, and the projection optics housing possesses and makes described the The second opening portion that one opening portion is exposed, also, the projection optics is configured to expose the opening portion with housing.

According to such projector optical apparatus, the first optical system possesses the first lens for being most located at the second optical system side And the first lens mount of the first lens is accommodated, it has been housed in projection optics in the first optical system and the second optical system In the state of in housing, the first lens expose lens notch by opening portion, and pass through the first opening portion and make and lens The first side of notch opposite side is exposed.It is reflected moreover, the wall portion of lens notch and the first lens mount is formed in Mirror reflection light by one side.The projection light being reflected by a reflector will not be blocked as a result, and can realize short range projection, Can utilize probe (プ ロ ー Block simultaneously) etc. fixtures realize edge from lens notch towards the of the first direction of first side The movement of one lens, i.e. the first lens are adjusted compared with the position of optical axis.

It is therefore not necessary to the projector optical apparatus used as main part can regard on side in the projector optical apparatus as product Feel while confirm projection image, while adjusted into row position, inhibit so as to the aberration directly and when securely maintaining adjustment It is horizontal.

[application examples 2] preferably, in the projector optical apparatus according to above application example, is also equipped with press section, described to press Splenium has elasticity, and the lens notch exposed from the opening portion is pressed to first opening portion one side.

According to such projector optical apparatus, can be kept between the fixture and press section being inserted into from the first opening portion One lens can be adjusted by movable clamp to carry out the position of the first lens.It is pressed from both sides as a result, without being inserted into from lens notch side Tool, so as to further inhibit to block the projection light being reflected by a reflector.

[application examples 3] preferably, in the projector optical apparatus according to above application example, first lens, which have, to be located at A pair of of the second side for the second direction intersected with first direction, the first direction are from described in lens notch direction The direction of first side, the receiving portion possess a pair of 3rd opening portion, and a pair of 3rd opening portion makes respectively described in a pair Second side is exposed, and the guide cylinder is formed as exposing a pair of 3rd opening portion, and the projection optics is formed with housing For that can expose a pair of 3rd opening portion.

According to such projector optical apparatus, projection light has been housed in the first optical system and the second optical system In the state of in housing, the first lens also have a pair of of the second side to show in addition to lens notch and the first opening portion Go out.Thereby, it is possible to carry out the adjustment of the position of the first lens in direction and second direction along the first direction.

[application examples 4] is preferably, first opening portion, described in the projector optical apparatus according to above application example Second opening portion and a pair of 3rd opening portion are respectively structured as possessing two hole portions, two notch or a hole Portion and a notch.

According to such projector optical apparatus, two hole portions, two notch, a hole portion and a notch can be made Two probes are inserted into corresponding to an opening portion, abut the side of lens respectively with two probes, therefore, it is possible to more stablize Ground keeps lens.When the lens adjusted into row position are larger or during with weight, its effect can be especially played.

[application examples 5] preferably, in the projector optical apparatus according to above application example, the receiving portion possesses for solid The first fixation opening portion determining first lens, exposing the side of first lens, the guide cylinder are formed as First fixation is made to be exposed with opening portion, the projection optics housing possesses and makes what the first fixation opening portion was exposed Second fixation opening portion.

According to such projector optical apparatus, point for example filled with bonding agent can be inserted into from the second fixation opening portion Orchestration etc., and via the first fixation opening portion bonding agent is injected laterally to the first lens of exposing.Thereby, it is possible to lens Side and receiving portion between gap injection bonding agent etc., the first lens can be firmly secured to receiving portion.

[application examples 6] preferably, in the projector optical apparatus according to above application example, the multiple lens group possesses tune Burnt (フ ォ ー カ ス Tone are whole) lens group.

It, can be by the aberration variation suppression brought of focusing when carrying out short range projection according to such projector optical apparatus It is made small.

[application examples 7] is according to the projecting apparatus of the application example, which is characterized in that possesses：Send the light supply apparatus of light；According to figure The optic modulating device of light as described in modulates information；And to it is being projected by the modulated light of the optic modulating device, on State the projector optical apparatus described in any application examples.

According to such projecting apparatus, the projector optical apparatus of aberration suppression level when can maintain adjustment due to possessing, because This, can efficiently inhibit aberration variation, improve the quality of projection image.

Description of the drawings

Fig. 1 is the stereogram for the occupation mode for showing projecting apparatus according to the present embodiment.

Fig. 2 is the schematic diagram of the optical unit of projecting apparatus.

Fig. 3 is the stereogram 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 stereogram of the first lens group and the first lens mount.

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

(a) and (b) of Fig. 9 is the optical axis direction sectional view for showing press section, opening portion, fixation opening portion.

Figure 10 is to show press section, opening portion, fixation opening portion, the sectional view in direction orthogonal with the optical axis.

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

Reference numeral

1 ... projecting apparatus, 3 ... optical units, 5 ... projector optical apparatus, 6 ... first optical systems, 7 ... second optical systems System, 31 ... light supply apparatuses, 50 ... projection optical units, 51 ... projection optics housings, 51A ... housing bodies, 51B ... outer covers, 53 ... light-transmitting plates, 61 ... first lens mounts, 62 ... second lens mounts, 63 ... the 3rd lens mounts, 64 ... the 4th lens mounts, 61P, 62P, 63P ... cam pin, 65 ... guide cylinders, 66 ... cam canisters, 71 ... speculums, 73 ... upside pressing components (press section), 74 ... front side pressing components, 351 ... liquid crystal panels (optic modulating device), 514 ... second opening portions, 515 ... the 4th opening portions, 516 ... second fix with opening portions, 613 ... rakes, 614 ... receiving portions, 653 ... opening portions, 654 ... the 4th opening portions, 655 ... opening portions, 663,664,665 ... cam paths, 6141 ... opening portions, 6142 ... first opening portions, 6143 ... the 3rd openings Portion, 6145 ... first fix with opening portions, 6521 ... straight trip slots, C ... optical axises, the first lens groups of L1 ..., the first lens of L11 ..., The first lens of L111 ... notch (lens notch), the second lens of L112 ... notch, the 3rd lens notch of L113 ..., The second lens groups of L2 ..., the 3rd lens groups of L3 ..., the 4th lens groups of L4 ....

Specific embodiment

In the following, based on description of the drawings embodiment.

(embodiment)

(occupation mode of projecting apparatus 1 and action)

Fig. 1 is the stereogram for the occupation mode for showing projecting apparatus 1 according to the present embodiment.It should be noted that projection Instrument 1 possesses projector optical apparatus 5 according to the present embodiment.

It is arranged on as shown in Figure 1, the projecting apparatus 1 of present embodiment supports in a manner that bottom surface 1A is upside arranged on wall surface W Support device SD on.Also, the screen SC as projection surface is disposed in proximity to throw on the downside of the wall surface W for setting projecting apparatus 1 The position of shadow instrument 1.

Projecting apparatus 1 be by be used as the liquid crystal panel 351 of optic modulating device come according to modulate image information from light supply apparatus The 31 transmitting light sent, and the device that light is used as image light is modulated by projector optical apparatus 5 (with reference to Fig. 2) enlarging projection. It should be noted that projecting apparatus 1 is projected the (ginseng of speculum 71 of Optical devices 5 from the opposite lateral screen SC projection of bottom surface 1A According to the figure after Fig. 2) reflection image light (projection light).The projecting apparatus 1 of present embodiment is configured to from closely with big picture The so-called short focus type projecting apparatus that (wide visual field angle) is projected to screen SC.

(composition of the optical unit 3 of projecting apparatus 1 and action)

Fig. 2 is the schematic diagram of the optical unit 3 of projecting apparatus 1.The control that optical unit 3 is based on control unit (not shown) carries out Action forms image light according to image information.As shown in Fig. 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 array 321,322, polarisation Conversion element 323, overlapping lens 324 and parallelizing lens 325.Also, optical unit 3 possesses color separated Optical devices 33 And relay optics 34, color separated Optical devices 33 have dichroscope 331,332 and speculum 333, relay light Learning device 34 has light incident side lens 341, relay lens 343 and speculum 342,344.

Also, optical unit 3 possesses electro-optical device 35, and electro-optical device 35 has three liquid crystal surfaces as optic modulating device (liquid crystal panel of red light (R light) is 351R to plate 351, and the liquid crystal panel of green light (G light) is 351G, blue light (B light) By the use of liquid crystal panel be 351B), three light incident side polarizers, 352, three emitting side polarizers 353 and as color synthesize light Learn the cross colour splitting prism 354 (Network ロ ス ダ イ Network ロ イ ッ Network プ リ ズ system) of device.Also, optical unit 3 possesses projection light It learns device 5 and accommodates the optical component casing 36 of each Optical devices 31~35.

Optical unit 3 is by above-mentioned composition, through being passed through by the light of illumination optics device 32 after being sent from light supply apparatus 31 Color separated Optical devices 33 are separated into R light, G light, the light of three colors of B light.Also, in each liquid crystal panel 351 according to image Information modulates each color of light after being separated respectively, is formed as the modulation light of each color of light.The modulation light of each color of light injects ten Word colour splitting prism 354 and synthesize image light, pass through 5 enlarging projection of projector optical apparatus 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 projecting apparatus, therefore omit specific description.

(summary of projector optical apparatus 5)

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

As shown in Figure 3, Figure 4, projector optical apparatus 5 is used as projection optics system, and being configured to combine has the first optical system 6 The optical system of (dioptric system) and the second optical system 7 (reflective optics).The projection optics dress of present embodiment Put 5 makes the image anaclasis projected from cross colour splitting prism 354 by the first optical system 6, and by aspherical speculum 71 the second optical systems 7 formed reflect and are projected to screen SC.Projector optical apparatus 5 possesses using one or more lens as one Multiple lens groups of a lens group are configured as the first optical system 6, these lens groups along optical axis C.It should be noted that this reality The projector optical apparatus 5 for applying mode is configured to the projector optical apparatus of short focus, and the first optical system 6 has the image to injection It is whole that light carries out focusing (フ ォ ー カ ス Tone) function.

It should be noted that for convenience of description, in the figure after Fig. 3, projector optical apparatus 5 is injected with image light The injection side of first optical system 6 is rear side, to project the emitting side of image light from the first optical system 6 as front side.Also, In figure shown in Fig. 3, the top of paper is upside, and lower section is downside.Also, to project image towards from the first optical system 6 Left and right directions during the emitting side observation of light is left side, right side suitably uses.As a result, in Fig. 1, projector optical apparatus 5 is It is set with state reverse up and down.It should be noted that this is the state reverse up and down of projecting apparatus 1.

Projector optical apparatus 5 is roughly configured in addition to possessing the first optical system 6 and the second optical system 7, also Possesses the projection optics housing 51 as the substrate of device, the first optical system 6 of storage and the second optical system 7；And Make the light-transmitting plate 53 that the reflected light (projection light) that speculum 71 is reflected penetrates.Also, projection optics housing 51 possesses upper Side has opening portion and accommodates the housing body 51A of the first optical system 6 and the second optical system 7；And covering housing body The top of 51A and the outer cover 51B for keeping light-transmitting plate 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 master The front side in the first optical system 6 is illustrated, Fig. 6 generally illustrates the rear side in the first optical system 6.Such as Fig. 4~Fig. 6 institutes Show, the first optical system 6 possesses guide cylinder 65, cam canister 66, the first lens group L1~the configured successively along optical axis C from front side Four lens group L4 and the 61~the 4th lens mount 64 of the first lens mount for keeping corresponding lens group L1~L4 respectively.

Projector optical apparatus 5 has carried out optics by the first optical system 6 to the image light injected from the 4th lens group L4 After processing, the speculum 71 from the first lens group L1 to the second optical system 7 projects, and is reflected by speculum 71 emitted Image light and to the top of the first lens group L1 as projection light project.It should be noted that the first lens group L1~the The first lens group L1 in four lens group L4 is located at the most leading portion for the first optical system 6 that light is projected to speculum 71.

The housing body 51A of projection optics housing 51 includes：It is configured at the flange 511 of incident side end, from flange 511 The first receiving portion 512 being extended to front side and the second collecting for being extended from the first receiving portion 512 and being extended to front side Portion 513.When flange 511 is formed as planar observation the rear end face of flange 511 is fixed on for rectangular shape, electro-optical device 35.And And the central portion of flange 511 has inserting hole 5111, and the rear side of the 4th lens mount 64 of the 4th lens group L4 is kept to be inserted through The inserting hole 5111.

First receiving portion 512 is formed as in substantially cylindrical shape using central shaft as the substantially semicircular cylinder being cut on the upside of boundary Shape, it is internal to accommodate the first optical system 6.Also, in the front side of the upper end of the first receiving portion 512, rear side, in the lateral direction Fixed part 5121 is extended to form, for projector optical apparatus 5 to be fixed on to the fixed component (not shown) inside projecting apparatus 1.

Second receiving portion 513 is formed as on the tubular extended to front side using central shaft as substantially half be cut on the upside of boundary Cylindric (semicircular platforms shape).The anterior end 5131 of second receiving portion 513 is open, and speculum 71 is arranged on anterior end On inner surface near 5131.

As shown in figure 4, projection optics is arranged to receive from second on the top of housing body 51A with the outer cover 51B of housing 51 The anterior end 5131 in appearance portion 513 substantially covers the front side centre position of the first receiving portion 512.Outer cover 51B is generally constructed to Possess light-transmitting plate maintaining part 521 and rake 522, light-transmitting plate maintaining part 521 is kept with the angle substantially vertical with projection optical axis Allow the light-transmitting plate 53 of gular transparent that the projection light reflected by speculum 71 penetrates, rake 522 is not to block through light-transmitting plate The angle of 53 projection light is formed, wherein, projection optical axis is the line at the center for connecting projecting beam.It should be noted that outer cover 51B is screwed in the upper end of housing body 51A.In addition, by the way that outer cover 51B is fixed on housing body 51A, so as to Light projected from the first optical system 6 etc. can be prevented 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.Straight trip slot 6521 passes through Lead to the side of rear side cylindrical portion 652 and formed, cut to form slot of keeping straight on by the direction from front side towards rear side along optical axis C 6521.It should be noted that in the side of rear side cylindrical portion 652, on the circumferencial direction centered on optical axis C by 120 ° etc. There are three straight trip slots 6521 for spacing formation.Fixed part 6522 there are four being formed in the rear end portion of rear side cylindrical portion 652, fixed part 6522 have the threaded hole (not shown) for being screwed the first adjustment being discussed below cylinder 67.Also, in rear side Near the rear end of cylindrical portion 652, prominent in concentric circles to be formed there are one fixed part 6523, fixed part 6523, which has, to be used In the threaded hole (not shown) of the fixed adjustment fixed component 70 being discussed below.

With the rake 522 of outer cover 51B that is formed as not interfering the projection light from speculum 71 matchingly, front side circle Canister portion 651 is formed with the notch 6511 that cutting top forms.Front side cylindrical portion 651 is covered from rear side cylindrical portion 652 to front side First lens mount 61 of protrusion form and the peripheral side of the second lens mount 62.It should be noted that guide cylinder 65 is screwed In the inside of housing body 51A.

Cam canister 66 is formed as cylindric, and the rear side cylindrical portion 652 of guide cylinder 65 is inserted embedded in its inside, and cam canister 66 can It is rotated centered on optical axis C compared with guide cylinder 65.Cam canister 66 is formed by being formed as cylindric maintaining part 661.It is keeping The inner peripheral surface in portion 661 be formed with from anterior end towards rear side the guide groove 662 that cuts in the direction along optical axis C and according to Path is provided to be formed and limits the cam path 663,664,665 of the shift action of the lens group L3 of the first lens group L1~the 3rd.It needs It should be noted that in the inner peripheral surface of maintaining part 661,120 ° of formation at equal intervals is pressed on the circumferencial direction centered on optical axis C There are three guide groove 662 and cam paths 663,664,665.

The outer circumferential surface of cam canister 66 is formed with to fix the fixed part 666 of rod unit (not shown).When being focused, By rotating rod unit cam canister 66 can be made to rotate to be adjusted compared with guide cylinder 65.

As shown in figure 4, the first lens group L1, the second lens group L2, the 3rd lens group L3 are respectively retained the first lens mount 61st, the second lens mount 62, the 3rd lens mount 63 are inserted embedded in guide cylinder 65, are configured to move along optical axis C.In each lens mount 61st, cam pin 61P, 62P, 63P are formed on 62,63, the cam pin 61P, 62P, 63P are sticked in the straight trip slot of guide cylinder 65 6521 and the cam path 663,664,665 of cam canister 66.

Then, with the rotation of cam canister 66, cam pin 61P, 62P, 63P are directed to straight trip slot 6521 and cam path 663rd, 664,665 intersection point, so as to which each lens mount 61,62,63 is moved along optical axis C directions.

As shown in figure 4, the 4th lens group L4 is maintained on the 4th lens mount 64.Moreover, the 4th lens mount 64 is via first Adjustment cylinder 67, second adjustment cylinder 68, adjustment are inserted with ring 69 embedded in guide cylinder 65.Projector optical apparatus 5 is saturating by these The movement of microscope group L1, L2, L3 carry out the focusing of image light.

Illustrate the composition and the assembling that form each component of projection optical unit 50 (the first optical system 6) below.

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

First lens group L1 is made of a non-spherical lens (being known as the first lens L11).First lens L11 is the first light The lens of the position of 7 side of the second optical system are located most closely in multiple lens that system 6 possesses.First lens L11 has The shape that circular cutting when having in the assigned position of the upside of optical axis C and optical axis C flatly from planar observation forms.Also, With the shape also vertically cut in assigned position along the left and right directions of the first lens L11.

First lens mount 61, which possesses, keeps the maintaining part 611 of the first lens group L1 and cam pin 61P.Maintaining part 611 is substantially Be formed as cylindric.It should be noted that it is formed with the rake with outer cover 51B on the outer circumferential surface top of 611 front side of maintaining part 522 matched rakes 613.The receiving portion 614 for accommodating the first lens L11 is formed in the anterior end of maintaining part 611.

It should be noted that cam pin 61P intersects from the outer circumferential surface on the rear end periphery of maintaining part 611 along with optical axis C Direction formed with protruding outward.It is equidistantly set on the circumferencial direction centered on optical axis C by 120 ° there are three cam Sell 61P.Cam pin 61P is formed as the taper that front end attenuates on the basis of cylinder.It should be noted that in detail below Illustrate the first lens L11 and the first lens mount 61.

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

Second lens group L2 is made of the cemented lens that the second lens L21 and the 3rd lens L22 engagements form, in optical axis C The predetermined distance of upside flatly cut with optical axis C.With the first lens mount 61 substantially in the same manner, the second lens mount 62 has The standby maintaining part 621 and three cam pin 62P for keeping the second lens group L2.It is formed on the outer circumferential surface top of 621 front side of maintaining part Have and 522 matched stage portion 623 of the rake of outer cover 51B.It should be noted that the second lens group L2 is maintained at by rivet hot The formation of maintaining part 621 has the inner peripheral surface of the anterior end of stage portion 623.

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

3rd lens group L3 is made 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 that engagement forms.With the first lens mount 61 substantially in the same manner, the 3rd lens mount 63 possess the maintaining part 631 and three cam pin 63P for keeping the 3rd lens group L3.3rd lens group L3 is maintained at by rivet hot On the assigned position for holding the inner peripheral surface of 631 front side of portion.

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

As shown in Fig. 4, Fig. 6, by the lens L49 of the 7th lens L41~the 15th, this nine lens are formed the 4th lens group L4. 4th lens mount 64 is made of on the basis of aperture (not shown) position the first division rack 641 and the second division rack 642.First point It cuts frame 641 and keeps the 7th lens L41 and the 8th lens L42, the second division rack 642 keeps aperture and the 9th lens L43 to the tenth Five lens L49.4th lens mount 64 has in the substantially the center of outer circumferential surface of the second division rack 642 to the side intersected with optical axis C To the flange 6421 of prominent formation.On each lens to be fixed on to 642 respective cylinder of the first division rack 641 and the second division rack it Afterwards, optical axis adjustment (aligning) is carried out.Afterwards, the first division rack 641 and the second division rack 642 are fixed as one using bonding agent Body.

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

As shown in Fig. 4~Fig. 6, during assembling, the cam pin 63P of the 3rd lens mount 63 is made to be sticked in guide cylinder from front side at first 3rd lens mount 63 is inserted into the inner surface of rear side cylindrical portion 652 by 65 straight trip slot 6521.Then, it is same with the 3rd lens mount 63 Sample, makes the cam pin 62P of the second lens mount 62 be sticked in straight trip slot 6521 from front side, and the second lens mount 62 is inserted into rear side cylinder The inner surface in portion 652.As a result, as shown in figure 4, the region of the maintaining part 631 of the 3rd lens group L3 of holding of the 3rd lens mount 63 (front area of maintaining part 631) becomes the state of the inner peripheral surface of 621 rear side of maintaining part of the second lens mount 62 of insertion.

Then, it is as shown in figure 4, similary with the second lens mount 62, the cam pin 61P of the first lens mount 61 is made to engage from front side In straight trip slot 6521, by the first lens mount 61 be inserted into rear side cylindrical portion 652 inner surface.The holding of second lens mount 62 as a result, The region (front area of maintaining part 621) of the maintaining part 621 of second lens group L2 becomes the holding of the first lens mount 61 of insertion The state of the inner peripheral surface in portion 611.

The first lens mount 61, the second lens mount 62, the 3rd lens mount 63 engage as cam pin 61P, 62P, 63P as a result, It is held in the state of guide cylinder 65.Also, the front end of cam pin 61P, 62P, 63P become the straight trip slot 6521 from guide cylinder 65 Prominent state.

(assembling of guide cylinder 65 and cam canister 66)

The first lens mount 61, the second lens of guide cylinder 65 are held in along the guiding engaging of guide groove 662 of cam canister 66 Frame 62, the 3rd lens mount 63 protrusion cam pin 61P, 62P, 63P front end, from the front side of cam canister 66 be inserted into guide cylinder 65.The rear side cylindrical portion 652 of guide cylinder 65 is inserted into cam canister 66 as a result,.Cam canister 66 can centered on optical axis C compared with Guide cylinder 65 rotates.

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

4th lens mount 64 (the 4th lens group L4) is still, to pass through phase by fixed lens group in the first optical system 6 It is rotated for guide cylinder 65, so as to adjust (back focusing (バ ッ Network フ ォ ー カ ス Tone are whole)) compared with moveable first The position of 61 to the 3rd lens mount 63 of lens mount (the first lens group L1~the 3rd lens group L3).It should be noted that for making The component that 4th lens mount 64 rotates is the first adjustment cylinder 67, second adjustment cylinder 68, adjustment ring 69, after adjustment, is being adjusted The component that 4th lens mount 64 is fixed on guide cylinder 65 is adjustment fixed component 70 by whole position.

(composition of the first adjustment cylinder 67)

As shown in Figure 5, Figure 6, the first adjustment cylinder 67 by cylindric maintaining part 671 and is formed in the outer of maintaining part 671 It is formed when circumferential surface and planar observation for the flange 672 of rectangle.The inner surface of maintaining part 671 is formed with thread groove 6711.In flange 672 four corners are respectively formed with hole portion 6721.By the front side of maintaining part 671 from the rear side cylindrical portion 652 of guide cylinder 65 Rear end side is inserted into, and flange 672 is made to be connected to the rear end portion of rear side cylindrical portion 652, will be inserted through the hole portion 6721 of flange 672 Screw SC1 is screwed into the threaded hole (not shown) of fixed part 6522 provisioned in the rear end portion of rear side cylindrical portion 652, thus will The first adjustment cylinder 67 is fixed.

(composition of second adjustment cylinder 68)

As shown in fig. 6, second adjustment cylinder 68 is configured to possess cylindric maintaining part 681, is formed at maintaining part 681 The protrusion 682 of outer circumferential surface rear end portion, be formed on outer circumferential surface protrusion 682 front side fixation protrusion 683 and be formed at The recess portion 684 of the inner peripheral surface rear end portion of maintaining part 681.It is fixed parallel with optical axis C with protrusion 683, and to the side intersected with optical axis C It is formed to prominent, the spaced set on the circumferencial direction centered on optical axis C.Also, it is formed on the outer circumferential surface of protrusion 682 Thread groove 6821 is formed with threaded portion 6811 on the outer circumferential surface of the front side of maintaining part 681.

(composition of adjustment ring 69)

As shown in fig. 6, adjustment ring 69 possesses cricoid maintaining part 691 and fixed part 692, fixed part 692 is from maintaining part 691 rear end portion extends towards optical axis C and with opening portion 6921.Also, it is formed with screw thread on the inner peripheral surface of maintaining part 691 Portion 6911.

(composition of adjustment fixed component 70)

As shown in Figure 5, Figure 6, adjustment fixed component 70 is configured to possess fixation main body 701 and fixinig plate 702, fixed It is substantially rectangular and formed with the curvature of 6523 outer circumferential surface of fixed part along guide cylinder 65 in planar observation with main body 701, Fixinig plate 702 extends on rear side of the rear end portion mediad of fixation main body 701 and is formed to the low single order in optical axis C sides.In fixation With the hole portion 7011 that slit-shaped is circumferentially formed in main body 701.It is formed in the rear end of fixinig plate 702 in rotation side Clamp the notch 7021 that second adjustment is cut with the fixation of cylinder 68 with the mode of protrusion 683 upwards.

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

First, embedding the 4th lens mount 64 for finishing optical axis and adjusting is inserted from second adjustment with the rear side of cylinder 68, makes the 4th thoroughly The flange 6421 of mirror holder 64 is located at the recess portion 684 of second adjustment cylinder 68.Then, it is inserted into adjustment from the rear side of the 4th lens mount 64 With ring 69 (opening portion 6921), the threaded portion 6911 of adjustment ring 69 is made to be screwed up with the thread groove 6821 of second adjustment cylinder 68. The 4th lens mount 64 is clamped and fixed by second adjustment cylinder 68 and adjustment ring 69 as a result,.

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

By above-mentioned assembling, projection optical unit 50 (the first optical system 6) is assembled into.It should be noted that in order into The back focusing that row is discussed below, which is fixed on after projection optics housing 51 (housing body 51A) Carry out back focusing.

(back focusing (バ ッ Network フ ォ ー カ ス Tone are whole) of the 4th lens mount 64)

As set forth above, it is possible to make the 4th lens mount 64 (the 4th lens group L4) compared with (the first adjustment cylinder of guide cylinder 65 67) rotate.In the present embodiment, by rotating the 4th lens mount 64, the back focusing of projector optical apparatus 5 can be carried out.It is logical It crosses projector optical apparatus 5 and projects the light (image light) injected from reduced side, while the projection image of the side visuognosis projection, Side rotates the 4th lens mount 64 to carry out back focusing.

It should be noted that when rotating four lens mounts 64, maintaining part 691 turn of the adjustment with ring 69 is held on It is dynamic.By rotating adjustment ring 69, used so as to change second adjustment with cylinder 68 (threaded portion 6811) compared with the first adjustment 67 (thread grooves 6711) of cylinder screw up state.As a result, including second adjustment with cylinder 68 and adjustment ring 69 interiorly the 4th thoroughly Mirror holder 64 is rotated compared with the first adjustment cylinder 67 (guide cylinder 65).

(fixation of the 4th lens mount 64)

When finishing the back focusing by the 4th lens mount 64, then, by adjusting saturating by the 4th with fixed component 70 Mirror holder 64 is fixed on guide cylinder 65.Specifically, the fixation main body 701 of adjustment fixed component 70 is arranged on guide cylinder 65 Fixed part 6523 predetermined portion.At this moment, notch 7021 becomes the fixation for clamping second adjustment cylinder 68 in protrusion 683 The state of any one protrusion.It should be noted that in the present embodiment, rotation pitch when rotating four lens mounts 64 is solid Surely the pitch (30 ° of pitches) of protrusion 683 is used, is not arbitrary pitch.

Then, the fixation protrusion 683 of second adjustment cylinder 68 is clamped in the notch 7021 of adjustment fixed component 70 In the state of, screw SC2 is inserted through hole portion 7011, the threaded hole with having on the fixed part 6523 of guide cylinder 65 screws up. Thereby, it is possible to the 4th lens mount 64 is fixed on guide cylinder 65.

Fig. 7 is the stereogram of the first lens group L1 and the first lens mount 61.Fig. 8 is the first lens group L1 and the first lens mount 61 exploded perspective view.It should be noted that Fig. 7, Fig. 8 are illustrated that the stereogram and exploded view observed from front side.Fig. 9 is Show press section, opening portion, fixation opening portion optical axis C directions sectional view.It should be noted that (a) of Fig. 9 mainly shows Press section (upside pressing component 73), the first opening portion 6142, the second opening portion 514, opening portion 653 are gone out, (b) of Fig. 9 is main Show press section (upside pressing component 73), the first fixation opening portion 6145, the second fixation opening portion 516, opening Portion 655.Figure 10 is to show press section, opening portion, fixation opening portion, the sectional view in the direction orthogonal with optical axis C.With reference to figure 4~Figure 10 illustrates the position adjustment of the first lens L11 and fixes.

(composition of the first lens L11)

In the present embodiment, the first lens L11 is made of the non-spherical lens of synthetic resin material.In the upper of optical axis C Side, i.e. by the projection light that speculum 71 reflects by one side, nonintervention the entering from the second lens group L2 of the first lens L11 The upper area for penetrating light is cut in the horizontal direction.The part becomes the first lens notch L111 as lens notch. Also, in other words, the first lens notch L111 have as assigned position, avoid the projection reflected with speculum 71 The position of the interference of light carries out the shape that cutting forms.

Also, as shown in figure 8, the nonintervention that the first lens L11 is vertically cut centered on optical axis C comes from second The region of the left and right directions of the incident light of lens group L2.Using the part as the second lens notch L112.Also, the first lens L11 has the 3rd lens notch L113 cut in the horizontal direction in the opposite side of the first lens notch L111.And And it is formed with the mouth of a river (ゲ ー ト due to being used to be molded the first lens L11 in the 3rd lens notch L113) and the protrusion of formation Portion L114.

(composition of the first lens mount 61)

As described above, the first lens mount 61, which possesses, keeps the maintaining part 611 of the first lens group L1 and cam pin 61P.It protects It holds portion 611 and is generally formed into cylindrical shape.The rake with outer cover 51B is formed on the outer circumferential surface top of the front side of maintaining part 611 522 matched rakes 613.In other words, rake 613 for as assigned position, avoid what is reflected with speculum 71 The position of the interference of projection light carries out the region that cutting forms.Also, it is formed with collecting first in the front end face of maintaining part 611 The receiving portion 614 of lens L11.

As shown in figure 8, the front side of receiving portion 614 opens, inner peripheral surface is formed as similar to the outer circumferential surface of the first lens L11 Shape, for accommodating the first lens L11 being inserted into from front side.It is formed in the upside of receiving portion 614 concave from rake 613 It is cut the notch portion 617 of such shape.In addition, notch portion 617 has the wall being located on the outside of the first lens notch L111 Portion 617a is formed with the opening portion 6141 for the part for exposing the first lens notch L111 in the central portion of wall portion 617a. The rake 613 and notch portion 617 of first lens mount 61 are contained in 65 (reference of guide cylinder in a manner of exposing from notch 6511 Fig. 3).I.e., guide cylinder 65 is formed as exposing opening portion 6141.

As shown in figure 8, receiving portion 614 is formed with forward in the side of opening portion 6141 and the coupling part of rake 613 Side is prominent and accepts and fixes the fixed part 615 for the upside pressing component 73 being discussed below.With the upside press section being discussed below Accordingly, there are two threaded holes 6151 for the formation of fixed part 615 for the hole portion 733 of part 73.Also, receiving portion 614 is in front end face 6146 are formed with the fixed part 616 of undertaking and the fixed front side pressing component 74 being discussed below.In addition, with the front side that is discussed below Accordingly, there are three threaded holes 6161 for the formation of fixed part 616 for the hole portion 743 of pressing component 74.

Receiving portion 614 is formed with the carrier 6147 uniformly extended inwardly.Also, it is formed on carrier 6147 more The continuing surface 6148 that a side forward protrudes.It should be noted that when the first lens L11 has been arranged at receiving portion 614, accept Face 6148 becomes the face of the peripheral part for the rear side surface for accepting the first lens L11, and to limit the first lens L11, side is moved backward.

(the first opening portion 6142, the composition of the 3rd opening portion 6143)

As shown in figure 8, receiving portion 614 possesses the first side (table of the 3rd lens notch L113 for making the first lens L11 Face) expose the first opening portion 6142, wherein, which is located at the opposite side of the first lens notch L111.First Opening portion 6142 be configured in the downside of receiving portion 614 compared with the vertical plane from optical axis C it is symmetrical, there is rectangular shape Two hole portions.Also, receiving portion 614 possess make left and right the second lens notch L112, i.e., positioned at being cut from the first lens A pair the 3rd that a pair of of second side in second direction that the first direction of oral area L111 towards first side intersects is exposed is opened Oral area 6143.It should be noted that similary with the first opening portion 6142, the 3rd opening portion 6143 is respectively formed as with rectangle shape Two hole portions of shape.

(opening portion 653, the composition of the second opening portion 514)

As shown in Figure 9, Figure 10, guide cylinder 65 and projection optics housing 51 (housing body 51A) are formed as making first to open Oral area 6142 exposes.Specifically, guide cylinder 65 has the opening portion 653 for exposing the first opening portion 6142, projection optics housing 51 have the second opening portion 514 for exposing the first opening portion 6142.It should be noted that it is similary with the first opening portion 6142, it leads It is configured to two holes compared with the vertical plane from optical axis C symmetrically, with rectangular shape to the opening portion 653 of cylinder 65 Portion.Projection optics is also formed with the second opening portion 514 of housing 51 in the same manner as the first opening portion 6142.

(composition of the 4th opening portion 654,515)

Also, guide cylinder 65 and projection optics housing 51 (housing body 51A) possess the 3rd opening portion with left and right (using the 4th opening portion of guide cylinder 65 as the 4th opening portion 654, projection optics is used 6143 two opposite the 4th opening portions 4th opening portion of housing 51 is as the 4th opening portion 515).It is similary with the 3rd opening portion 6143, the 4th opening of guide cylinder 65 Portion 654 is formed in opposite position, in the present embodiment, is formed in substantially symmetrical with respect to the vertical plane of optical axis C Position.Also, the 4th opening portion 654 is respectively formed as two hole portions with rectangular shape.Projection optics housing 51 4th opening portion 515 is also formed in the same manner as the 3rd opening portion 6143.

(first fixes the composition with opening portion 6145)

The first lens L11 after being adjusted for fixed position, receiving portion 614, which possesses, exposes the side of the first lens L11 Multiple first fix with opening portions 6145.In further detail, as shown in Fig. 8, Figure 10, multiple first fix with opening portion 6145 Be formed as hole portion in the upside of the first lens L11 and downside.Specifically, the first of upside is fixed is equipped with two with opening portion 6145 It is a, it is arranged to respectively expose the first lens notch L111 and the side in the corner of the second lens notch L112 of left and right. First fixation opening portion 6145 of downside is configured to a rectangle hole portion, reveals the side of the 3rd lens notch L113 sides Go out.

(second fixes with opening portion 516, the composition of opening portion 655)

As shown in Figure 10, guide cylinder 65 has expose downside first to fix the opening portion 655 for using opening portion 6145, projection Optics has with housing 51 (housing body 51A) exposes second fixation opening of the first fixation on the downside of this with opening portion 6145 Portion 516.First fixation of upside is not yet installed on the projector optical apparatus 5 of housing body 51A with opening portion 6145 in outer cover 51B Expose in (with reference to Fig. 3).In this way, guide cylinder 65 is formed as exposing the first fixation opening portion 6145, projection optics housing 51 possess the second fixation opening portion 516 for exposing the first fixation opening portion 6145 of downside.

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

As shown in figure 8, possess the upside pressing component 73 as press section on the first lens mount 61, the upside pressing component 73 have elasticity, and the first lens notch of the upside as the first lens L11 is pressed on the direction of optical axis C is approximately perpendicular to L111.Upside pressing component 73 is formed by the bending machining of metallic plate.Upside pressing component 73 is by being square during planar observation The article body 731 of shape and extend downwards from the both ends of article body 731 and be bent to form and two flexible Spring 732 is formed.Also, the hole portion 733 being inserted through for screw SC3 is formed at the both ends of article body 731.

(composition of front side pressing component 74)

As shown in figure 8, possessing front side pressing component 74 on the first lens mount 61, front side pressing component 74 has elasticity, with Optical axis C presses the front side surface of the first lens L11 substantially in parallel.Front side press section is formed by the bending machining of metallic plate Part 74.Substantially U-shaped when front side pressing component 74 possesses matching with the flat shape of the first lens L11, planar observation Article body 741.Also, front side pressing component 74 possesses inwardly in the lowest part of article body 741 and upside both ends Extend and be bent to form and flexible three spring 742.Also, difference shape near the spring 742 of article body 741 Into the hole portion 743 for being useful for screw SC4 and being inserted through.

(assemblings of the first lens L11 to the first lens mount 61)

During assembling, upside pressing component 73 is arranged to the fixed part 615 of the first lens mount 61 at first.Afterwards, from front side Screw SC3 is inserted into the hole portion 733 of upside pressing component 73, the threaded hole 6151 of itself and fixed part 615 is screwed up, upside is pressed Splenium part 73 is fixed on fixed part 615.

Then, the first lens L11 is inserted into the receiving portion 614 of the first lens mount 61 from front side.At this moment, upside pressing is resisted The pressing force of the spring 732 of component 73 is inserted into.The first lens L11 becomes first exposed from opening portion 6141 as a result, Lens notch L111 is by the state of the spring 732 of upside pressing component 73 (6142 side of the first opening portion) pressing downwards. In other words, the first lens L11 becomes by upside pressing component 73 to the state with the elasticity pressing of optical axis C generally perpendicular directions (in the state being elastically stressed on the direction of the side of the first lens notch L111).

Then, the pressing component 74 on front side of the front side surface of the first lens L11 is set.Afterwards, inserted from front side by screw SC4 Enter the hole portion 743 of front side pressing component 74, screw up the threaded hole 6161 of itself and front end face 6146.It is pressed as a result, by front side The spring 742 of splenium part 74 makes the peripheral part of the rear side surface of the first lens L11 be abutted with continuing surface 6148, and by with Optical axis C directions press the peripheral part of the front side surface of the first lens L11 to rear side substantially in parallel, so as to the first lens L11's Front-rear direction is fixed.

By assembled above, as shown in Fig. 7, Fig. 9, Figure 10, the first lens L11 becomes vertical direction and front-rear direction is consolidated Determine and be housed in the state in receiving portion 614.

(the position adjustment of the first lens L11)

Housing body 51A has been installed in the first optical system 6 and the second optical system 7 (speculum 71), and outer cover 51B is not yet installed under the state (with reference to Fig. 3) of housing body 51A, adjusts positions of the first lens L11 compared with optical axis C. In projector optical apparatus 5, in the state of the position adjustment of the first lens L11 is carried out, as shown in figure 3, opening portion 6141 is exposed, As shown in Figure 10, the first opening portion 6142 and a pair of 3rd opening portion 6143 are exposed.In this way, guide cylinder 65 is formed as making opening 6141 and first opening portion 6142 of portion and a pair of 3rd opening portion 6143 are exposed.Make in addition, projection optics housing 51 has The second opening portion 514 that first opening portion 6142 is exposed, and be configured to make a pair of 3rd opening portion 6143 and opening portion 6141 expose.

Reflect to project the light that projection optical unit 50 (the first optical system 6) is incident upon from reduced side by speculum 71 (image light), while the projection image of the side visual confirmation projection, while the first lens L11 that moves up and down comes into row position Adjustment.It is adjusted by the position for carrying out the first lens L11, so as to correct the aberrations such as the filed curvature of projection image.

(composition of position adjustment fixture)

In the present embodiment, adjustment fixture in position possesses moveable first probe (not shown), by making first Probe is abutted with the side for the 3rd lens notch L113 being formed on the downside of the first lens L11, so as to resist upside press section The pressing force of part 73 and be moved upward the first lens L11.Also, in the present embodiment, position adjustment possesses with fixture Moveable second probe (not shown), by the second lens for making left and right sides of second probe with being formed in the first lens L11 Notch L112 is abutted, so as to move the first lens L11 in the lateral direction.

First probe is formed by not possessing the probe of compression helical spring (not shown).Also, with two the first opening portions 6142 correspondingly, and the first probe is made of two probes.It should be noted that the amount of movement of two probes is adjusted to It is even.

Second probe is by possessing the probe of compression helical spring (not shown) and not possessing the probe of compression helical spring (not Diagram) it forms.In the present embodiment, for the second lens notch L112, the second probe is by possessing compression helical spring Probe pressing left side the second lens notch L112 side, by do not possess the probe of compression helical spring pressing right side The second lens notch L112 side.

In the present embodiment, with two the 3rd opening portions 6143 in left side accordingly, possesses compression in the second probe The probe of helical spring is made of two probes.It should be noted that the respective composition of two probes is identical, pressing is left to the right The side of second lens notch L112 of side.With two the 3rd opening portions 6143 on right side accordingly, do not possess compression spiral The probe of spring is made of two probes.In addition, the amount of movement of two probes is adjusted to uniformly.

In this way, the first probe, the second probe are configured to pressing notch (the 3rd lens of corresponding first lens L11 Notch L113, the second lens notch L112) when the side of identical notch is pressed at two.In other words, the first opening 6142 and the 3rd opening portion 6143 of portion is made of two hole portions, to press cutting for the first lens L11 by fixture (probe) The side of identical notch can be pressed during oral area at two.

(setting of fixture)

As shown in Figure 10, two probes are inserted through shape respectively by the first probe from the outside of projector optical apparatus 5 respectively Into in second opening portion 514, opening portion 653 of the projection optics on housing 51 (housing body 51A) and the guide cylinder of inside 65, And it is inserted through the first opening portion 6142 being formed on the receiving portion 614 of the first lens mount 61.Afterwards, the front end of each probe is made It is abutted with the exposing side of the 3rd lens notch L113 of the first lens L11.

The first lens L11 becomes the side of the first lens notch L111 by (two springs of upside pressing component 73 as a result, Portion 732) elasticity pressing, the state that the 3rd lens notch L113 is pressed by the first probe at two.Thereby, it is possible to be visited first The first lens L11 is kept between pin and opposite upside pressing component 73.

As shown in Figure 10, two probes in left side are inserted through by the second probe from the outside of projector optical apparatus 5 respectively The 4th opening portion 515,654 in projection optics housing 51 (housing body 51A) and the left side on guide cylinder 65 is formed in, and is inserted Enter the 3rd opening portion 6143 by being formed in the left side on the receiving portion 614 of the first lens mount 61.Afterwards, before making each probe End is abutted with the exposing side of the second lens notch L112 in the left side of the first lens L11.

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

The second lens notch L112 that the first lens L11 becomes left side as a result, is possessed two of compression helical spring The elasticity pressing of second probe, the second lens notch L112 on right side do not possessed two the second probes of compression helical spring by The state of pressure.Thereby, it is possible to keep the first lens L11 between opposite the second probe (the second probe of left and right).

(passing through adjustment of the fixture to the first lens L11)

By the fixture of installation position adjustment as described above, so as to be kept by 73 and first probe of upside pressing component The notch (the first lens notch L111, the 3rd lens notch L113) of the vertical direction of first lens L11.It is also, logical Cross the notch (the second lens notch L112 of left and right) that the second probe keeps the left and right directions of the first lens L11.

In further detail, in being adjusted in the position of the first lens L11, the is carried out by changing the amount of movement of the first probe The adjustment of the vertical direction of one lens L11, the amount of movement of the second probe for not possessing compression helical spring by changing right side To carry out the adjustment of the left and right directions of the first lens L11.It should be noted that as described above, side visual confirmation projects image Meanwhile it while into row position adjustment, adjusts to the position of the aberrations such as no filed curvature.

(fixations of the first lens L11 to the first lens mount 61 (receiving portion 614))

Finish position adjustment when, after the adjustment in the state of, the first lens L11 is fixed on the first lens mount 61 (receiving portion 614).In the present embodiment, it is fixed using the bonding agent of ultraviolet hardening.

It although, in the present embodiment, first will be saturating as the 3rd of the downside of the first lens L11 the regardless of order Receiving portion 614 is fixed in the side (raised face L114) of mirror notch L113.Specifically, from the outside of projector optical apparatus 5 The front end insertion that will be filled with the distributor of bonding agent is formed in projection optics housing 51 (housing body 51A) and guide cylinder The second of 65 downside is fixed with opening portion 516, opening portion 655.Afterwards, from formation opposite with the 3rd lens notch L113 First fixation of receiving portion 614 is noted with opening portion 6145 to the side (raised face L114) of the 3rd lens notch L113 of exposing Enter bonding agent.

Then, the first lens notch L111 of the first lens L11 and the corner of the second lens notch L112 are fixed In receiving portion 614.Here, work as the projection optics 51 (shell of housing that projection optical unit 50 has been arranged at and has been not provided with outer cover 51B Phosphor bodies 51A) on when, the upside of the receiving portion 614 of the first lens mount 61 is open state (exposing state).Therefore, positioned at receipts It is also open state that two first of the upper side corner sections in appearance portion 614, which are fixed with opening portion 6145,.It therefore, directly will be before distributor End insertion is saturating to the first of exposing respectively positioned at two first fixation opening portions 6145 of the upper side corner sections of receiving portion 614 Mirror L11's is injected laterally bonding agent.

As described above, by injecting bonding agent, so as to which bonding agent is by the side of the first lens L11 of injection and receiving portion 614 Inner surface between gap.Afterwards, ultraviolet light is irradiated to the bonding agent of injection, cures bonding agent.By more than process, The side of one lens L11 and the inner surface of the receiving portion 614 of the first lens mount 61 are fixed by bonding agent, and the first lens L11 consolidates Due to the first lens mount 61.

It should be noted that after adjusting in the position for having carried out the first lens L11 and is fixed, light transmission will be equipped with from upside The outer cover 51B of plate 53 is arranged at housing body 51A, so as to complete projector optical apparatus 5.Also, touch housing body with adhesive tape The second opening portion 514 of 51A, the second fixation are closed with 516 and the 4th opening portion 515 of opening portion.

According to the above embodiment, following effect can be obtained.

Projector optical apparatus 5 according to the present embodiment projects the most leading portion of the first optical system 6 of light to speculum 71 The first lens group L1 possess and can include other multiple lens groups and carry out lens (the first lens of final position adjustment interiorly L11).In addition, the first lens L11 and the first lens mount 61 as assigned position, avoid with being reflected by speculum 71 Projection light interference position possess be removed a part the first lens notch L111 and rake 613.Moreover, pass through The first lens notch L111 of elasticity pressing on direction substantially vertical with optical axis C of upside pressing component 73.It should be noted that It is to possess to expose the side of the threeth lens notch L113 opposite with the first lens notch L111 on receiving portion 614 First opening portion 6142, so as to the second opening portion 514 from the opening portion of guide cylinder 65 653 and projection optics with housing 51 First probe of insertion position adjustment makes it be supported via the first opening portion 6142 and the side of the 3rd lens notch L113 It connects.For this purpose, the first lens L11 can be kept between first probe and opposite upside pressing component 73, pass through mobile the One probe moves (position adjustment) first lens L11.It according to this constitution, need not be from the direction of the first lens notch L111 (optical path direction of reflected light) is inserted into probe, so as to prevent fixture from blocking reflected light.

Therefore, it is possible to which when using the second optical system 7 for possessing speculum 71, reflected light is not blocked in realization, which or not to be carried out The projector optical apparatus 5 of the position adjustment of first lens L11.Also, due to without using the projector optical apparatus as main part and While carrying out side visual confirmation projection image used as the projector optical apparatus 5 of product, while adjusted into row position, therefore, The suppression level of aberration that can be directly and when securely maintaining adjustment.

Projector optical apparatus 5 according to the present embodiment, the 3rd opening portion 6143 of receiving portion 614 are formed as opposite Expose the side (side of the second lens notch L112) of the first lens L11 in position.Carrying out the first lens L11's as a result, When position adjusts, in addition to the first opening portion 6142, the second probe is in addition inserted into the 3rd opening portion 6143, so as to more Add and evenly keep the first lens L11, can steadily move (adjustment) first lens L11.Also, guide cylinder 65 and projection light Possesses opposite the 4th opening portion 654,515 formed with the 3rd opening portion 6143 on housing 51, so as to from projection light The second probe is inserted into the outside for learning device 5.

Projector optical apparatus 5 according to the present embodiment, in each opening portion (the first opening portion 6142, the second opening portion 514th, opening portion 653, the 3rd opening portion 6143 of left and right, the 4th opening portion 515 of left and right, 654) in, opening portion is formed For two hole portions.Be inserted correspondingly into two probes with two hole portions as a result, can make the side of the first lens L11 respectively with Two probes abut, and compared with when being abutted with a probe, can steadily keep the first lens L11.According to this constitution, In the case where the lens to be adjusted into row position are larger or in the case of with weight, its effect can be especially played.

Projector optical apparatus 5 according to the present embodiment possesses the first fixation opening portion 6145 on receiving portion 614, Possess the opening portion 655, second opposite with the first fixation opening portion 6145 on guide cylinder 65 and projection optics housing 51 Fixed opening portion 516.Thereby, it is possible to be filled with point of bonding agent with the insertion of opening portion 516 from opening portion 655, the second fixation Orchestration, and via the first fixation opening portion 6145 bonding agent is injected laterally to the first lens L11 of exposing.Accordingly, for Finish the projector optical apparatus 5 of position adjustment, it can be between the side of outer lateral first lens L11 and receiving portion 614 Gap injects bonding agent, can the first lens L11 reliably be fixed on receiving portion 614.

Projector optical apparatus 5 according to the present embodiment possesses the first optical system 6 and the second optical system 7 as throwing Optical system is penetrated, the first lens group L1 to the 3rd lens group L3 is structured to focus, and when carrying out short range projection, can incite somebody to action The aberration variation brought by focusing is suppressed to smaller.

Projecting apparatus 1 according to the present embodiment possesses the projection optics dress of aberration suppression level when being able to maintain that adjustment 5 are put, is changed therefore, it is possible to efficiently inhibit aberration, the quality of projection image can be improved.

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

The projector optical apparatus 5 of the above embodiment possesses press section (upside pressing component 73), but can also be configured to Do not possess press section.

Figure 11 is to show the first lens L11 in the projector optical apparatus for not possessing press section, the first lens mount 161 and preceding The stereogram of side pressing component 174.

As shown in figure 11, the first lens mount 161 in the variation has the first lens notch for making the first lens L11 Notch 1611 that L111 exposes, as opening portion.Although not shown, but the projector optical apparatus of variation has and above-mentioned implementation The guide cylinder 65 of mode and the projection optics identical guide cylinder of housing 51 and projection optics housing, the first lens mount 161 have identical with the first opening portion 6142, the 3rd opening portion 6143 in the first lens mount 61 of the above embodiment the One opening portion, the 3rd opening portion.In addition, the first lens L11 is adjusted by the probe being inserted into from 1611 and first opening portion of notch Vertical direction position.Also, bend to L-shaped from the front end of probe that notch 1611 is inserted into, be formed as will not blocking by The projection light that speculum 71 reflects.It should be noted that the adjustment of the left and right directions of the first lens L11 and the above embodiment are same It carries out sample.

Front side pressing component 74 in the above embodiment possesses three spring 742, and is formed as one, but such as Figure 11 Form that is shown or separately formed, being made of three front side pressing components 174 with common shape.

In the projector optical apparatus 5 of the above embodiment, being formed on guide cylinder 65 makes the first of receiving portion 614 to be open The opening portion 653 that portion 6142 exposes, but receiving portion 614 can also be configured to and protruded from guide cylinder 65, to expose the first opening portion 6142。

In the projector optical apparatus 5 of the above embodiment, being formed on guide cylinder 65 makes the 3rd of receiving portion 614 to be open The 4th opening portion 654 that portion 6143 exposes, but receiving portion 614 can also be configured to and protruded from guide cylinder 65, it is opened with exposing the 3rd Oral area 6143.

Also, the 4th opening portion for exposing the 3rd opening portion 6143 of receiving portion 614 is formed on housing body 51A 515, but can also be configured to make the wall of housing body 51A to decline (leaving optical axis C in the up-down direction) to downside, to expose 3rd opening portion 6143.

In the projector optical apparatus 5 of the above embodiment, receiving portion 614 has the 3rd opening portion 6143, but can also It is the receiving portion without the 3rd opening portion 6143.

In the projector optical apparatus 5 of the above embodiment, each opening portion (the first opening portion 6142, the second opening portion 514th, opening portion 653, the 3rd opening portion 6143 of left and right, the 4th opening portion 515 of left and right, 654) be configured to opening portion tool Standby two hole portions.It is however not limited to two hole portions, can also be configured to possess two notch, a hole portion and a notch Portion.

In the projector optical apparatus 5 of the above embodiment, each opening portion (the first opening portion 6142, the second opening portion 514th, opening portion 653, the 3rd opening portion 6143 of left and right, the 4th opening portion 515 of left and right, 654) be configured to opening portion tool Standby two hole portions.It is however not limited to two hole portions, can also be configured to possess a hole portion.Also, hole portion is not limited to, also may be used To be configured to possess a notch.

In the projector optical apparatus 5 of the above embodiment, the first fixation with receiving portion 614 is opposite with opening portion 6145 Ground is formed with opening portion 655 on guide cylinder 65, solid with being formed with second on housing 51 (housing body 51A) in projection optics Surely opening portion 516 is used.But sometimes due to guide cylinder 65, projection optics housing 51 shape etc. and can not be on both sides The second fixation opening portion is formed, it therefore, can be in any on the position opposite with the first fixation opening portion 6145 The second fixation opening portion is formed on component (guide cylinder 65, projection optics housing 51).

As shown in Figure 1, the projecting apparatus 1 of the above embodiment is set support device SD in a manner that bottom surface 1A is upside On wall surface W, to the screen SC projection projection image arranged on 1 downside of projecting apparatus.But the set-up mode of projecting apparatus 1 is not limited, Ceiling face, ground, desktop etc. can also be located at and projected to the screen SC for being located at wall surface W.It also, can also be by projecting apparatus 1 sets on the table and is projected to same desktop.

In the projecting apparatus 1 of the above embodiment, electro-optical device 35 employ using corresponding to R light, G light, three of B light The so-called three-chip type (3 plate mode) of optic modulating device.But it's not limited to that, and the light modulation of one chip can also be used to fill It puts.Also, the optic modulating device for using to improve contrast can also be added.

In the projecting apparatus 1 of the above embodiment, electro-optical device 35 employs through mode optic modulating device (through mode liquid crystal Panel 351).But it's not limited to that, can also use reflecting light modulating device.

In the projecting apparatus 1 of the above embodiment, electro-optical device 35 employs liquid crystal panel 351 as optic modulating device. But it's not limited to that, is generally based on the device of image signal modulation incident beam, such as micro mirror formula may be employed The optic modulating device of optic modulating device etc., other manner.It should be noted that as micro mirror formula optic modulating device, such as can be with Using DMD (Digital Micromirror Device：Digital Micromirror Device).

In the projecting apparatus 1 of the above embodiment, optical unit 3 employs the integration being made of lens array 321,322 Illumination optics device 32 of the lens optical system as the uniform-illumination for realizing the light beam sent from light supply apparatus 31.But It's not limited to that, can also use the integrating rod optical system being made of guide-lighting bar.

In the optical unit 3 of the projecting apparatus 1 of the above embodiment, the illuminator 311 of light supply apparatus 31 employs superelevation The discharge lamps such as medium pressure mercury lamp, but laser diode, LED (Light Emitting Diode can also be used：Light emitting diode), Organic EL (Electro Luminescence：Electroluminescent) the various solid-state light emitting elements such as element, silicon light-emitting component.

Claims (10)

1. a kind of projector optical apparatus, which is characterized in that possess：

First optical system has the multiple lens groups configured along optical axis；

Second optical system has speculum, the light projected from first optical system is reflected；And

Projection optics housing accommodates first optical system and second optical system,

First optical system possesses：

First lens in the multiple lens group, are located most closely to the position of the second optical system one side；

First lens mount has the receiving portion for accommodating first lens；And

Guide cylinder accommodates first lens mount,

First lens by the light that the speculum reflects by one side have and local be removed the lens notch formed Portion,

The receiving portion has：

Wall portion positioned at the outside of the lens notch；And

Make the first opening portion exposed with the first side of the lens notch opposite side of first lens,

The wall portion is equipped with the opening portion for exposing the lens notch,

The guide cylinder is formed as exposing first opening portion and the opening portion,

The projection optics housing possesses the second opening portion for exposing first opening portion, also, the projection optics It is configured to expose the opening portion with housing.

2. projector optical apparatus according to claim 1, which is characterized in that the projector optical apparatus is also equipped with：

Press section, the press section have elasticity, the lens notch exposed from the opening portion are pressed to described first Opening portion one side.

3. projector optical apparatus according to claim 1, which is characterized in that

First lens have a pair of of the second side for being located at the second direction intersected with first direction, and the first direction is From the lens notch towards the direction of the first side,

The receiving portion possesses a pair of 3rd opening portion, and a pair of 3rd opening portion respectively shows a pair of the second side Go out,

The guide cylinder is formed as exposing a pair of 3rd opening portion,

The projection optics is configured to expose a pair of 3rd opening portion with housing.

4. projector optical apparatus according to claim 2, which is characterized in that

First lens have a pair of of the second side for being located at the second direction intersected with first direction, and the first direction is From the lens notch towards the direction of the first side,

The receiving portion possesses a pair of 3rd opening portion, and a pair of 3rd opening portion respectively shows a pair of the second side Go out,

The guide cylinder is formed as exposing a pair of 3rd opening portion,

The projection optics is configured to expose a pair of 3rd opening portion with housing.

5. projector optical apparatus according to claim 3, which is characterized in that

First opening portion, second opening portion and a pair of 3rd opening portion are respectively structured as possessing two holes Portion, two notch or a hole portion and a notch.

6. projector optical apparatus according to claim 4, which is characterized in that

First opening portion, second opening portion and a pair of 3rd opening portion are respectively structured as possessing two holes Portion, two notch or a hole portion and a notch.

7. projector optical apparatus according to any one of claim 1 to 6, which is characterized in that the receiving portion possesses use In fixation first lens, the first fixation opening portion for exposing the side of first lens,

The guide cylinder is formed as that first fixation is made with opening portion to be exposed,

The projection optics possesses the second fixation opening portion that first fixation is made to be exposed with opening portion with housing.

8. projector optical apparatus according to any one of claim 1 to 6, which is characterized in that the multiple lens group tool The lens group of standby focusing.

9. projector optical apparatus according to claim 7, which is characterized in that

The multiple lens group possesses the lens group of focusing.

10. a kind of projecting apparatus, which is characterized in that possess：

Send the light supply apparatus of light；

The optic modulating device of light according to modulate image information；And

To projection light being projected by the modulated light of the optic modulating device, any one of claim 1 to 9 Learn device.