CN205015604U - Projecting system with two -way off -axis - Google Patents
Projecting system with two -way off -axis Download PDFInfo
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- CN205015604U CN205015604U CN201520757750.3U CN201520757750U CN205015604U CN 205015604 U CN205015604 U CN 205015604U CN 201520757750 U CN201520757750 U CN 201520757750U CN 205015604 U CN205015604 U CN 205015604U
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Abstract
The utility model relates to and discloses a projecting system with two -way off -axis, wherein, if with among the projecting system object plane of projecting lens be the object plane plane, with the optical axis of projecting lens with the planar point of intersect of object plane is initial point, general the object plane plane divides four quadrants into, effective display element of projection display device among the projecting system is set up as that the off -axis at the horizontal direction is greater than 70%, also is greater than 70% at the off -axis of vertical direction, under the preferred condition, the off -axis of level, vertical direction all can be more than or equal to 100%, promptly effective display element is set up to only being located in planar one of them quadrant of object plane, at this moment, even put this kind of projecting system in the corner position, projected image still can adjust to the best viewing effect of people's eye.
Description
Technical field
The utility model relates to projector, more particularly, relates to a kind of optical projection system with two-way off-axis.
Background technology
As shown in Figure 1A, in the projection lens unit of projector, if the optical axis being centrally located at camera lens of effective display unit 104, then belong to the situation without off-axis projection.Be understandable that, if this kind of projector is directly put in desktop, then the lower part of its light beam projected can be blocked by desktop, cannot penetrate completely, so need to carry out off-axis projection (being also called Offset) process in the vertical direction for installation site.
As shown in Figure 1B, this is the schematic diagram of lower off-axis projection, and now effectively display unit 104 is positioned at the top of camera lens optical axis, and in camera lens projection object plane.As shown in Figure 2 B, the position after imaging just in time conversely, is positioned at the bottom of camera lens optical axis to position relationship after its projection.When this projector is mounted on roof, projected image, all the time below roof, can not be blocked by roof.
As shown in Figure 1 C, this is the schematic diagram of upper off-axis projection, and now effectively display unit 104 is positioned at the bottom of camera lens optical axis, and in camera lens projection object plane.Position after its imaging just in time conversely, is positioned at the top of camera lens optical axis.When this projector is put in desk, projected image is square on the table all the time, can not be blocked by desktop.
Fig. 2 A is depicted as the schematic diagram without off-axis projected position relation, corresponding to the effect shown in Figure 1A; Wherein, display chip workplace is the object plane 202 of this optical projection system, and projection plane is the image planes 216 of this optical projection system.Projection lens optical axis center 212 passes through the center 210 of projection lens 208, and perpendicular to object plane 202 and image planes 216, and meet at O1 point and O2 point respectively.With O1 point for initial point does a coordinate plane on object plane 202, divide four quadrants; With O2 point for initial point does a coordinate plane in image planes 216, divide four quadrants.Effective display unit 204 is positioned at four quadrants of object plane 202 uniformly, is imaged in image planes 216 by projection lens, and projected image 214 is positioned at four quadrants of image planes plane uniformly.
Fig. 2 B is depicted as the position relationship schematic diagram of unidirectional off-axis projection, corresponding to the lower off-axis projection shown in Figure 1B; Wherein, effective display unit 204 is positioned at first, second quadrant of object plane 202 uniformly, after being imaged in image planes 216 by projection lens, projected image 214 be positioned at uniformly image planes 216 the 3rd, fourth quadrant.
Aforementioned off-axis projection is all the process in single direction, if the aforementioned projector without off-axis projection to be laid on desktop and by wall on the right side of it, the lower part of its light beam projected can be blocked by desktop and cannot penetrate completely on the one hand, and the right-hand component of its light beam projected can be blocked by metope and cannot penetrate completely on the other hand.If the projector of aforementioned upper off-axis projection to be laid on desktop and by wall on the right side of it, its light beam projected can not be blocked by desktop, but still can be blocked by metope and cannot penetrate completely.
Visible, when the projector of aforementioned upper off-axis projection, the projector of lower off-axis projection are installed in by wall displacement, its light beam projected all can some block by the metope of its side, complete image cannot be projected.
Utility model content
For the above-mentioned defect of prior art, the utility model to solve light beam that existing unidirectional off-axis projection system projects always some block by the metope of its side, the problem of complete image cannot be projected.
For solving the problems of the technologies described above, the utility model provides a kind of optical projection system with two-way off-axis, it is characterized in that, wherein, in optical projection system, the object plane of projection lens is object plane plane, is initial point with the intersection point of the optical axis of described projection lens and described object plane plane, described object plane plane is divided into four quadrants as described above, the off-axis that effective display unit of the projection display device in described optical projection system is set in the horizontal direction is greater than 70%, and off-axis in the vertical direction is also greater than 70%.
In optical projection system of the present utility model, also can comprise the first regulon for regulating described effective display unit off-axis in the horizontal direction, and/or for regulating the second regulon of described effective display unit off-axis in the vertical direction.In described first regulon and/or the second regulon, regulate described effective display unit at the off-axis of horizontal and/or vertical by regulating the relative position of the described effective display unit in optical projection system and projection lens.
In optical projection system of the present utility model, the off-axis that described effective display unit can be set in the horizontal direction is more than or equal to 100%, off-axis in the vertical direction is also more than or equal to 100%, namely described effective display unit is set to one of them quadrant being only positioned at described object plane plane, can be specifically any one in first, second, third, fourth quadrant.
In optical projection system of the present utility model, also comprise for regulate described effective display unit off-axis in the horizontal direction with between first quartile and the second quadrant the 3rd or fourth quadrant between the 3rd regulon that switches, and/or for regulate described effective display unit off-axis in the vertical direction with between first quartile and fourth quadrant second or third quadrant between the 4th regulon that switches.In described 3rd regulon and/or the 4th regulon, regulate described effective display unit at the off-axis of horizontal and/or vertical by regulating the relative position of the described effective display unit in optical projection system and projection lens.
In optical projection system of the present utility model, described projection lens is tight shot or zoom lens.
In optical projection system of the present utility model, described projection lens is zoom lens, also comprises the focus unit doing automatic focusing process for described projection lens.
Adopt the optical projection system with two-way off-axis of the present utility model, off-axis projection can be realized in both direction, when being set to the off-axis of two-way 100%, projected image also can be made further to be positioned at first, second, 3rd, arbitrary quadrant in fourth quadrant, for to be placed on desktop and on the right side of it by wall time, on the one hand owing to there being upper off-axis so the lower part of its light beam projected can not be blocked by desktop, on the other hand owing to there being left avertence axle so the right-hand component of its light beam projected can not be blocked by metope, that is, the light beam of projection can penetrate completely.Even if this optical projection system is placed on corner location, projected image still can adjust to the best viewing effect of human eye.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Figure 1A is the schematic diagram without off-axis projection system;
Figure 1B is the schematic diagram of lower off-axis projection system;
Fig. 1 C is the schematic diagram of upper off-axis projection system;
Fig. 1 D is schematic diagram that is right, upper two-way part off-axis projection system;
Fig. 1 E is schematic diagram that is right, upper two-way 100% off-axis projection system;
Fig. 2 A is the position relationship schematic diagram without object plane, image planes and optical axis center in off-axis projection system;
Fig. 2 B is the position relationship schematic diagram of object plane, image planes and optical axis center in lower off-axis projection system;
Fig. 2 C is the position relationship schematic diagram of object plane, image planes and optical axis center in two-way off-axis projection system;
Fig. 3 is the schematic diagram of two-way off-axis projector when being placed on the right of beholder;
Fig. 4 is the schematic diagram of two-way off-axis projector when being placed in the beholder left side;
Fig. 5 A is the schematic diagram before off-axis position adjustments;
Fig. 5 B is the schematic diagram after off-axis position adjustments.
Embodiment
As shown in figure ip, this is the schematic diagram of two-way part off-axis projection system, now effectively display unit 104 be in the drawings left, downward all inclined 80%, the position after its projection imaging just in time conversely, be to the right, upper off-axis.About the definition of off-axis ratio, vertical direction in Fig. 1 D is example, in camera lens projection object plane, the center of effective display unit 104 is wherein h1 to the horizontal distance by optical axis, the center of effective display unit is h2 to the distance at that the effective display unit edge horizontal by optical axis, and the ratio of h1/h2 is the off-axis ratio in the utility model.During concrete enforcement, the off-axis of upper and lower, left and right either direction is preferably greater than 70%, and then combination of two.Such as upwards off-axis is greater than 100%, and when off-axis is greater than 70% left, can be applicable to being placed on right side by the desktop of wall.
As referring to figure 1e, this is the schematic diagram that upper off-axis adds the two-way off-axis projection of right avertence axle pattern, and now effectively display unit 104 is positioned at the lower left quarter of camera lens object plane.Now effectively display unit 104 left, downward off-axis is all greater than 100%.
Fig. 2 C is the schematic diagram of two-way off-axis projection system, wherein, be object plane plane with the object plane of projection lens in optical projection system, be initial point with the intersection point of the optical axis of projection lens and object plane plane, object plane plane is divided into four quadrants, effective display unit 204 of the projection display device in optical projection system is set to the first quartile being positioned at object plane 202 completely, be imaged in image planes 216 by projection lens, and projected image 214 is positioned at the third quadrant of image planes 216 completely.That is, projected image has lower off-axis and left avertence axle here, so just can be positioned at lower left simultaneously.
During concrete enforcement, also can be the pattern that upper off-axis adds right avertence axle, projected image 214 be positioned at the first quartile of image planes 216 completely; Or upper off-axis adds the pattern of left avertence axle, projected image 214 is positioned at the second quadrant of image planes 216 completely; Or lower off-axis adds the pattern of right avertence axle, projected image 214 is positioned at the fourth quadrant of image planes 216 completely.
The pattern that above off-axis adds left avertence axle is example, the projector of this two-way off-axis projection to be laid on desktop and on the right side of it by wall time, on the one hand owing to there being upper off-axis so the lower part of its light beam projected can not be blocked by desktop, on the other hand owing to there being left avertence axle so the right-hand component of its light beam projected can not be blocked by metope, that is, the light beam of projection can penetrate completely.
As shown in Figure 3, the projector 302 with two-way off-axis to be placed on the right of beholder on bedside cupboard, now on rear side of it, all there is metope on right side, so need to select lower off-axis to add the pattern of left avertence axle, projected image 304 can project on ceiling, people can lie on a bed viewing projected picture, because the off-axis amount of projector's both direction is all greater than 102%, so projected image can be incident upon the viewing location of human eye the best, and image can not produce trapezoidal distortion, also can not be blocked by wall, very easy to use, keep the change special stand and fix projector.
As shown in Figure 4, also can projector 302 is placed on the bedside cupboard on the left side, now on rear side of it, all there be metope in left side, so need to select lower off-axis to add the pattern of right avertence axle, so only need the off-axis of projector's horizontal direction to be adjusted to reverse position, the effect of normal projection can be reached.
Wherein, also can regulon be set, regulates effective display unit off-axis in the horizontal direction, or regulate described effective display unit off-axis in the vertical direction, the regulon of both direction can be set simultaneously, the regulon in one of them direction also can be only set.Such as the optical projection system be fixedly installed as upper off-axis pattern, the off-axis regulon of horizontal direction can be only set.Specifically by regulating the relative position of the effective display unit in optical projection system and projection lens to regulate effective display unit at the off-axis of horizontal and/or vertical.
In addition, for the situation of more than 100% two-way off-axis, the function of horizontal direction regulon can be set to allow effective display unit can between first quartile and the second quadrant the 3rd or fourth quadrant between switch, vertical direction regulon be then set to allow effective display unit can between first quartile and fourth quadrant second or third quadrant between switch.
Fig. 5 A and Fig. 5 B is depicted as the schematic diagram regulating off-axis in the utility model embodiment in the horizontal direction.In fig. 5, effective display unit 514 of projector's display chip is positioned at the fourth quadrant of object plane plane, projection lens joint face 512 (in Fig. 5 A the most left rectangular configuration limited to the rightest frame line) is provided with four kidney slots 502, and with four camera lens lock-screws 504, projection lens is fixed on illuminator Connection Block 510 (rectangular configuration that in Fig. 5 A, dotted line limits to the rightest frame line), lock-screw 504 is now positioned at the left end of kidney slot 502.
When the putting position of projector changes, when needing the off-axis direction regulating projector, four camera lens lock-screws 504 can be unclamped, projection lens joint face 512 is moved right, illuminator Connection Block 510 (rectangular configuration that in Fig. 5 B, dotted line limits to the most left frame line) keeps motionless, camera lens lock-screw 504 is made to be positioned at the right-hand member of kidney slot, then by screw lock, at this moment effectively display unit 514 just moves on to third quadrant from fourth quadrant, thus completes projector's off-axis adjustment in the horizontal direction.
In the utility model, aforementioned regulon can be electronic or manual mode, and projection lens is wherein tight shot or zoom lens.When using zoom lens, the focus unit doing automatic focusing process for projection lens also can be set up.About automatic focusing unit, notification number can be used for the technical scheme in the patents such as CN203012335U, CN203012334U, CN203012332U.
Claims (8)
1. one kind has the optical projection system of two-way off-axis, it is characterized in that, wherein, in optical projection system, the object plane of projection lens is object plane plane, is initial point with the intersection point of the optical axis of described projection lens and described object plane plane, described object plane plane is divided into four quadrants as described above, the off-axis that effective display unit of the projection display device in described optical projection system is set in the horizontal direction is greater than 70%, and off-axis in the vertical direction is also greater than 70%.
2. the optical projection system with two-way off-axis according to claim 1, it is characterized in that, also comprise the first regulon for regulating described effective display unit off-axis in the horizontal direction, and/or for regulating the second regulon of described effective display unit off-axis in the vertical direction.
3. the optical projection system with two-way off-axis according to claim 2, it is characterized in that, in described first regulon and/or the second regulon, regulate described effective display unit at the off-axis of horizontal and/or vertical by regulating the relative position of the described effective display unit in optical projection system and projection lens.
4. the optical projection system with two-way off-axis according to claim 1, it is characterized in that, the off-axis that described effective display unit is set in the horizontal direction is more than or equal to 100%, off-axis in the vertical direction is also more than or equal to 100%, and namely described effective display unit is set to one of them quadrant being only positioned at described object plane plane.
5. the optical projection system with two-way off-axis according to claim 4, it is characterized in that, also comprise for regulate described effective display unit off-axis in the horizontal direction with between first quartile and the second quadrant the 3rd or fourth quadrant between the 3rd regulon that switches, and/or for regulate described effective display unit off-axis in the vertical direction with between first quartile and fourth quadrant second or third quadrant between the 4th regulon that switches.
6. the optical projection system with two-way off-axis according to claim 5, it is characterized in that, in described 3rd regulon and/or the 4th regulon, regulate described effective display unit at the off-axis of horizontal and/or vertical by regulating the relative position of the described effective display unit in optical projection system and projection lens.
7. the optical projection system with two-way off-axis according to any one of claim 1-6, is characterized in that, described projection lens is tight shot or zoom lens.
8. the optical projection system with two-way off-axis according to claim 7, is characterized in that, described projection lens is zoom lens, also comprises the focus unit doing automatic focusing process for described projection lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757750.3U CN205015604U (en) | 2015-09-28 | 2015-09-28 | Projecting system with two -way off -axis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757750.3U CN205015604U (en) | 2015-09-28 | 2015-09-28 | Projecting system with two -way off -axis |
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| Publication Number | Publication Date |
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| CN205015604U true CN205015604U (en) | 2016-02-03 |
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| CN201520757750.3U Active CN205015604U (en) | 2015-09-28 | 2015-09-28 | Projecting system with two -way off -axis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054113A1 (en) * | 2015-09-28 | 2017-04-06 | 神画科技（深圳）有限公司 | Projection system with bidirectional offset axis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054113A1 (en) * | 2015-09-28 | 2017-04-06 | 神画科技（深圳）有限公司 | Projection system with bidirectional offset axis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210926 Address after: 518118 east of 6th floor, No.1 Factory building, No.35 Cuijing Road, Pingshan New District, Shenzhen City, Guangdong Province Patentee after: BUTTERFLY TECHNOLOGY (SHENZHEN) Ltd. Address before: 518118 west of 6 / F, No.1 Factory building, 35 Cuijing Road, Pingshan New District, Shenzhen City, Guangdong Province Patentee before: CINEPIC TECHNOLOGY (SHENZHEN) Ltd. |
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| TR01 | Transfer of patent right |