TWI699610B - Mirror room structure with adjustable tilt - Google Patents

Abstract

A mirror chamber structure with adjustable tilt, which is characterized by: an eccentric roller structure, which comprises: a roller body with a groove in it, and a through hole at the bottom of the groove, and the roller body is centered on the through hole , The first roller and the second roller with a two-stage outer circle are provided, so that the first and second rollers present a non-concentric eccentric shape, and the roller system is radially inserted into the inclined guide groove of the wheel ring. And go deep into the hole of the main lens barrel to the concave hole of the mirror chamber, and the grooves and through holes correspond to the oblique guide groove of the wheel ring, the hole of the main lens barrel and the concave hole of the mirror chamber, and the first and second Two rollers respectively contact the inner edge of the inclined guide groove and the inner edge of the concave hole; and a screw which is inserted radially into the groove and through hole of the roller body and penetrates into the opening of the main barrel and the concave hole of the mirror chamber Attached to the concave hole of the mirror chamber; thereby, when the screw is loosened in the concave hole of the mirror chamber, the first and second rollers of the roller body are rotated in the eccentric direction, resulting in eccentricity According to this, the axially displaceable wheel ring can be eccentric to adjust the inclination of the lens.

Description

Mirror room structure with adjustable tilt

The present invention relates to a mirror chamber structure capable of adjusting the inclination. The eccentric roller structure generates an eccentricity, and the eccentricity is used to adjust the inclination of the lens.

Press, a projector has a lens, the lens can zoom magnification to adjust the focal length, usually the lens has a focusing mechanism, the focusing mechanism includes: a main lens barrel, the outer contour of which is provided with at least one opening ; A mirror chamber, the outer contour of which is provided with at least one concave hole, and is axially fixed in the main lens barrel, and the concave hole corresponds to the opening of the main lens barrel; a lens is fixed axially On the mirror chamber; and a wheel ring, the outer contour of which is provided with at least one oblique guide groove, and axially sleeved on the outer contour of the main lens barrel, and the oblique guide groove corresponds to the opening of the main lens barrel The hole and the concave hole of the mirror chamber can drive the adjustment of the axial displacement distance of the main lens barrel.

With the second press, the lens is composed of not only the focusing mechanism, but also other lenses and other lens barrels, so that the lens will be subject to accumulated tolerances of many components during the assembly and manufacturing process. However, it is found that the cumulative tolerance causes problems such as the reduction of the resolution of the projector and the tilt of the image plane, which are also the subject to be solved by the present invention.

The main purpose of the present invention is to provide a mirror chamber structure with adjustable tilt. The roller body is provided with a first roller and a second roller with a two-stage outer circle, so that the first and second rollers The lens presents a non-concentric eccentric shape, and the tilt of the lens can also be adjusted to solve the problem of accumulated tolerances generated by the prior art in lens assembly and manufacturing, thereby compensating for the improved resolution of the projector and the effect of the tilt of the image plane.

To achieve the above objective, the technical means adopted by the present invention include: a main lens barrel, and The profile is provided with at least one opening; a mirror chamber, the outer profile of which is provided with at least one recessed hole, and is axially fixed in the main lens barrel, and the recess is corresponding to the opening of the main lens barrel; A lens is axially fixed on the mirror chamber; and a wheel ring whose outer contour is provided with at least one oblique guide groove and axially sleeved on the outer contour of the main lens barrel, and the oblique guide groove It corresponds to the opening of the main lens barrel and the concave hole of the mirror chamber, and can drive the adjustment of the axial displacement distance of the main lens barrel; it is characterized in that: at least one eccentric roller structure is relatively arranged in the inclined guide groove The inner edge and the inner edge of the recessed hole include: a roller body with a groove in it, and a through hole at the bottom of the groove. The roller body is centered on the through hole and is provided with a two-stage The outer first roller and the second roller make the first and second rollers present a non-concentric eccentric shape, and the roller system is radially inserted into the oblique guide groove of the wheel ring and goes deep The opening of the main lens barrel enters the concave hole of the mirror chamber, and the groove and the through hole correspond to the oblique guide groove of the wheel ring, the opening of the main lens barrel and the concave hole of the mirror chamber, and The first and second rollers respectively contact the inner edge of the inclined guide groove and the inner edge of the concave hole; and a screw is inserted radially into the groove and through hole of the roller body and penetrates into the main lens barrel The opening and the concave hole of the mirror chamber are locked on the concave hole of the mirror chamber; thereby, when the screw is loosened in the concave hole of the mirror chamber, the first and The second roller rotates in the eccentric direction to generate an eccentric amount, so that the axially displaceable wheel ring can adjust the inclination of the lens by the eccentric amount.

According to the aforementioned features, the eccentricity can be 0.05mm.

According to the features disclosed above, the lens system can be provided with an original optical axis. When the eccentric direction of the roller body is perpendicular to the original optical axis, the lens has no tilt; when the roller body rotates 90 degrees toward the eccentric direction, The phase of the roller body is rotated to adjust the inclination of the lens, so that the inclination direction of the lens adjusts the original optical axis to a new optical axis.

According to the aforementioned features, the diameter of the first roller is slightly larger than the diameter of the second roller, and the center of the second roller is slightly offset from the center of the first roller.

With the help of lifting technology, it has the eccentric roller structure in the adjustable tilt lens chamber structure, and the eccentric amount can also be generated to adjust the tilt of the lens, so as to overcome the accumulated tolerance caused by the lens assembly and manufacturing process The problem is to compensate for the improvement of the resolution of the projector and the tilt of the image plane.

10: Main tube

11: Opening

20: Mirror Room

21: concave hole

30: lens

31: Original optical axis

32: New optical axis

40: wheel ring

41: oblique guide groove

50: eccentric roller structure

51: Roller body

511: Groove

5111: Through hole

512: first roller

513: Second Roller

60: Screw

70: Mirror room structure with adjustable tilt

e: eccentricity

θ: Inclination

D: Axial displacement distance

L: other lenses

B: Other lens barrels

Figure 1 is a combined perspective view of the present invention.

Figure 2 is an exploded perspective view of the present invention.

Figure 3 is a side view of the present invention.

Figure 4A is a cross-sectional view of the present invention.

Fig. 4B is an enlarged view of 4B in Fig. 4A.

Figure 4C is a top view of the eccentric roller structure of the present invention.

Figure 4D is a bottom view of the eccentric roller structure of the present invention.

Figure 5 is a schematic diagram of the present invention can be combined with other lenses and other lens barrels.

Fig. 6 is a schematic diagram of the inclination of the unadjusted lens of the present invention.

Fig. 7 is a schematic diagram of adjusting the tilt of the lens of the present invention.

First of all, please refer to FIGS. 1-7. A mirror chamber structure 70 with adjustable tilt of the present invention includes: a main lens barrel 10, the outer contour of which is provided with at least one opening 11; and a mirror chamber 20, The outer contour is provided with at least one concave hole 21, and is axially fixed in the main lens barrel 10, and the concave hole 21 corresponds to the opening 11 of the main lens barrel 10; a lens 30 is axially fixed Is provided on the mirror chamber 20; and a wheel ring 40, the outer contour of which is provided with at least one oblique guide groove 41, and axially sleeved on the outer contour of the main lens barrel 10, and the oblique guide groove 41 is opposite Should be the main lens barrel 10 open The hole 11 and the concave hole 21 of the mirror chamber 20 can drive the adjustment of the axial displacement distance (D) of the main lens barrel 20; however, the lifting member belongs to the prior art (Prior Art) and is not the subject of the patent of the present invention , Without going into details.

As shown in Figures 4A, 4B, 4C and 4D, it is characterized in that: at least one eccentric roller structure 50 is arranged opposite to the inner edge of the inclined guide groove 41 and the inner edge of the recessed hole 21, which includes: a roller body 51. A groove 511 is provided in the groove 511, and a through hole 5111 is provided at the bottom of the groove 511. The roller body 51 is centered on the through hole 5111 and is provided with a first roller 512 and a two-stage outer circle. The two rollers 513 make the first and second rollers 512, 513 present a non-concentric eccentric shape, and the roller body 51 is radially inserted into the oblique guide groove 41 of the wheel ring 40 and penetrates into the main The opening 11 of the lens barrel 10 reaches into the recess 21 of the mirror chamber 20, and the groove 511 and the through hole 5111 correspond to the oblique guide groove 41 of the wheel ring 40, the opening 11 and the opening 11 of the main lens barrel 10 The concave hole 21 of the mirror chamber 20 and the first and second rollers 512 and 513 respectively contact the inner edge of the inclined guide groove 41 and the inner edge of the concave hole 21; and a screw 60 is inserted into the roller radially In the groove 511 and the through hole 5111 of the sub-body 51, it goes deep into the opening 11 of the main lens barrel 10 and the concave hole 21 of the mirror chamber 20, and is locked on the concave hole 21 of the mirror chamber 20. In an embodiment, the diameter of the first roller 512 is slightly larger than the diameter of the second roller 513, and the center of the second roller 513 is slightly offset from the center of the first roller 512, but it is not limited thereto.

Thereby, when the screw 60 is loosened in the recessed hole 21 of the mirror chamber 20, the first and second rollers 512 and 513 of the roller body 51 are rotated in the eccentric direction, resulting in an eccentricity ( e) According to the axially displaceable wheel ring 40, the eccentricity (e) is used to adjust the inclination (θ) of the lens 30. In this embodiment, the eccentricity (e) is 0.05 mm, but not limited to this.

As shown in Figure 5, the lens 30 is provided with an original optical axis 31, and the tilt-adjustable mirror chamber structure 70 can be combined with other lenses (L) and other lens barrels (B); as shown in Figure 6, when The roller The eccentric direction of the main body 51 is perpendicular to the original optical axis 31, and the inclination (θ) of the lens 30 is not adjusted; as shown in FIG. 7, when the roller main body 51 is rotated 90 degrees in the eccentric direction, the roller is rotated The phase of the sub-body 51 is adjusted to adjust the inclination (θ) of the lens 30 to adjust the original optical axis 31 to a new optical axis 32 in the inclination direction of the lens 30. Therefore, the eccentric direction of the rotating roller body 51 is not It is perpendicular to the original optical axis 31, but is not limited to this.

Based on such a structure, the tilt-adjustable mirror chamber structure 70 has the eccentric roller structure 50. The main design is that the roller body 51 is provided with the first and second rollers 512, 513, and is non-concentric The eccentricity of the lens can be easily rotated in the eccentric direction, and the eccentricity (e) can be generated to adjust the inclination of the lens 30. In this way, the cumulative tolerance generated by the assembly and manufacturing of the lens can be adjusted to compensate for the projector’s The effect of resolution and tilt of the image plane is improved.

In summary, the technical means disclosed in the present invention do have the requirements of invention patents such as "novelty", "progressiveness" and "available for industrial use". I hope that the Jun Bureau will grant patents to encourage creation without any responsibility. Sense of virtue.

However, the drawings and descriptions disclosed above are only preferred embodiments of the present invention. Anyone who is familiar with the art and makes modifications or equivalent changes based on the spirit of the case should still be included in the scope of the patent application.

10: Main tube

11: Opening

20: Mirror Room

21: concave hole

40: wheel ring

41: oblique guide groove

50: eccentric roller structure

51: Roller body

511: Groove

5111: Through hole

512: first roller

513: Second Roller

60: Screw

Claims (4)

A mirror chamber structure with adjustable tilt, comprising: a main lens barrel, the outer contour of which is provided with at least one opening; a mirror chamber, the outer contour of which is provided with at least one recessed hole, and is axially fixed In the main lens barrel, the concave hole corresponds to the opening of the main lens barrel; a lens is axially fixed on the lens chamber; and a wheel ring whose outer contour is provided with at least one oblique guide groove, It is axially sleeved on the outer contour of the main lens barrel, and the oblique guide groove corresponds to the opening of the main lens barrel and the concave hole of the mirror chamber, and can drive the adjustment of the axial displacement distance of the main lens barrel It is characterized in that: at least one eccentric roller structure is arranged on the inner edge of the inclined guide groove and the inner edge of the recessed hole, which includes: a roller body with a groove provided therein, and the bottom of the groove is provided There is a through hole, the roller body is centered on the through hole, and a first roller and a second roller with a two-stage outer circle are arranged to make the first and second rollers present a non-concentric eccentric shape, And the roller system is inserted radially into the oblique guide groove of the wheel ring, and penetrates the opening of the main lens barrel to the concave hole of the mirror chamber, and the groove and the through hole correspond to the wheel ring The oblique guide groove, the opening of the main lens barrel and the recessed hole of the mirror chamber, and the first and second rollers respectively contact the inner edge of the oblique guide groove and the inner edge of the recessed hole; and a screw for fixing the diameter It is inserted into the groove and through hole of the roller body, and penetrates into the opening of the main lens barrel and the concave hole of the mirror chamber, and is locked on the concave hole of the mirror chamber; thereby, when the screw After loosening the concave hole in the mirror chamber, the first and second rollers of the roller body are rotated in the eccentric direction to produce an eccentric amount, according to which the wheel ring which can be axially displaced, The eccentric amount can be used to adjust the inclination of the lens. The mirror chamber structure with adjustable inclination as described in claim 1, wherein the eccentricity is 0.05 mm. The mirror chamber structure with adjustable tilt as described in claim 1, wherein the lens is provided with an original optical axis, and when the eccentric direction of the roller body is perpendicular to the original optical axis, the lens has no tilt; The roller system rotates 90 degrees toward the eccentric direction, and the phase of the roller body is rotated to adjust the inclination of the lens so that the lens tilt direction adjusts the original optical axis to a new optical axis. The mirror chamber structure with adjustable inclination according to claim 1, wherein the diameter of the first roller is slightly larger than the diameter of the second roller, and the center of the second roller is slightly deviated from the first roller The center of the child.

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