TWI454828B - Projection system with touch control function - Google Patents

Description

Projection system with touch function

The invention relates to a projection system, in particular to a projection system with a touch function.

As touch systems mature, electronic devices with large-size and multi-touch technologies will become the mainstream of the future. At present, optical touch systems have lower cost and easier to achieve advantages than other methods, such as resistive, capacitive, and ultrasonic. With the advancement and development of technology, projection systems with touch functions are becoming more and more popular. In general, a projection system with a touch function utilizes a light curtain formed by a laser as a touch sensing light source. In order for the lens of the projector to accurately sense any touch point on the display plane, the light curtain needs to maintain a certain degree of parallelism with the display plane. When the light curtain is skewed relative to the display plane, it must now be corrected by trained personnel using an invisible light detector. This is not only inconvenient and time consuming for the average user.

Therefore, one of the objects of the present invention is to provide a projection system with a touch function, which is provided with an adjustment mechanism of a rotatable light-emitting module to adjust the angle between the light curtain and the display plane, thereby solving the above problems.

According to an embodiment, a projection system with a touch function of the present invention includes a projector, a light emitting module, and an adjustment mechanism. The projector is placed opposite to a display plane. The light emitting module is disposed between the projector and the display plane and adjacent to the display plane for emitting light to form a light curtain. The adjusting mechanism is disposed on the light emitting module to rotate the light emitting module to adjust the angle between the light curtain and the display plane.

In summary, since the projection system with touch function of the present invention is provided with an adjustment mechanism of the rotatable light-emitting module, when the light curtain is skewed relative to the display plane, any user can easily operate the adjustment mechanism to rotate the light. Module to adjust the angle between the light curtain and the display plane. It is not only easy to operate, but also does not require special calibration instruments, which can effectively save adjustment time.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

Please refer to FIG. 1 to FIG. 5 . FIG. 1 is a perspective view of a projection system 1 with a touch function according to an embodiment of the invention. FIG. 2 is a light-emitting module 12 and an adjustment mechanism 14 of FIG. 1 . FIG. 3 is a combination view of the light-emitting module 12, the adjustment mechanism 14 and the bracket 16 in FIG. 1 at another viewing angle, and FIG. 4 is a first connecting member 140 and a second diagram in FIG. A cross-sectional view of an adjusting member 142, and Fig. 5 is a cross-sectional view of the second connecting member 141 and the third adjusting member 145 in Fig. 2.

As shown in FIG. 1 , the projection system 1 with touch function includes a projector 10 , a lighting module 12 , an adjusting mechanism 14 and a bracket 16 . Projector 10 and a display The planes 18 are oppositely arranged. The light emitting module 12 is disposed between the projector 10 and the display plane 18 and adjacent to the display plane 18 for emitting light to form a light curtain 20. In this embodiment, at least one invisible light source, a spectroscopic lens, and a diffusing lens may be disposed in the light emitting module 12. After the invisible light emitted from the invisible light source acts through the spectroscopic lens and the diffusing lens, the optical path diffuses and expands into the light curtain 20. The aforementioned invisible light may be laser, infrared or other invisible light depending on the actual application. The light-emitting module 12 of the present invention can also be designed to emit visible light, depending on actual design requirements. When the user touches the object (such as a finger, a stylus, etc.) before the display plane 18 to block the light at any position of the light curtain 20, the lens of the projector 10 is judged according to the captured image. The user performs the touch position to perform the corresponding touch function.

The adjusting mechanism 14 is disposed on the light emitting module 12 for rotating the light emitting module 12 to adjust the angle between the light curtain 20 and the display plane 18. In this embodiment, the adjusting mechanism 14 includes a first connecting member 140, a second connecting member 141, a first adjusting member 142, a second adjusting member 143, a third connecting member 144, and a third adjusting member. 145, a fourth connecting member 146, a fourth adjusting member 147, a sliding member 148 and a slide rail 149.

The first connecting member 140 is coupled to the light emitting module 12 and has a first gear 1400. The second connecting member 141 is pivotally connected to the first connecting member 140 via a pivot 150 as shown in FIG. The first adjusting member 142 is rotatably disposed on the second connecting member 141 and has a second gear 1420. The second gear 1420 meshes with the first gear 1400 as shown in FIGS. 2 and 4. Therefore, when the first adjusting member 142 rotates, the first adjusting member 142 drives the first connecting member 140 and the hair via the cooperation of the second gear 1420 and the first gear 1400. The optical module 12 is pivoted relative to a first axis X with the pivot 150 as an axis, wherein the first axis X is parallel to the display plane 18, as shown in FIG.

In addition, the first connecting member 140 can be pivotally connected to the light emitting module 12 via a bearing (not shown). In other words, the light emitting module 12 can relatively rotate the first connecting member 140. The first connecting member 140 further has a third gear 1402. The second adjusting member 143 is fixed to the light emitting module 12 and has a fourth gear 1430. The fourth gear 1430 meshes with the third gear 1402 as shown in FIG. Therefore, when the second adjusting member 143 rotates, the second adjusting member 143 drives the light-emitting module 12 with the first connecting member 140 as an axis relative to a second axis Y through the cooperation of the fourth gear 1430 and the third gear 1402. Rotation, wherein the second axis Y displays the plane 18 in parallel and perpendicular to the first axis X, as shown in FIG.

Furthermore, the third connecting member 144 and the second connecting member 141 are pivotally connected via a pivot 151 (as shown in FIG. 3) and the second connecting member 141 has a fifth gear 1410. The third adjusting member 145 is rotatably disposed on the third connecting member 144 and has a sixth gear 1450. The sixth gear 1450 is meshed with the fifth gear 1410 as shown in FIGS. 2 and 5. Therefore, when the third adjusting member 145 rotates, the third adjusting member 145 drives the second connecting member 141, the first connecting member 140 and the light emitting module 12 to pivot via the cooperation of the sixth gear 1450 and the fifth gear 1410. 151 is a rotation of the axis relative to a third axis Z, wherein the third axis Z is perpendicular to the display plane 18, as shown in FIG. In other words, the third axis Z is perpendicular to the first axis X and the second axis Y.

According to the above mechanism design, when the light curtain 20 is skewed relative to the display plane 18, The user can selectively rotate the first adjusting member 142, the second adjusting member 143 and/or the third adjusting member 145 to drive the light emitting module 12 relative to the first axis X, the second axis Y and/or the third axis. Z rotates to adjust the angle of the light curtain 20 to the display plane 18.

In addition, the third connecting member 144 has a plurality of spaced-apart fixing holes 1440. The fourth connecting member 146 is slidably sleeved on the third connecting member 144 and has a long slot 1460. The fourth adjusting member 147 is detachably disposed in one of the long slot 1460 and the fixing hole 1440, and the nut 152 is locked to one end of the fourth adjusting member 147 to fix the third connecting member 144 and the fourth connecting portion. The relative position of the piece 146. Therefore, in response to the size of the different display planes 18, the user can remove the nut 152, withdraw the fourth adjusting member 147, and then slide the third connecting member 144 relative to the fourth connecting member 146 in the direction of the second axis Y to The position of the light-emitting module 12 relative to the display plane 18 in the direction of the second axis Y is adjusted such that the light curtain 20 formed by the light-emitting module 12 can cover the entire display plane 18. After the adjustment is completed, the fourth adjusting member 147 is further disposed in the long slot 1460 and the corresponding fixing hole 1440, and the nut 152 is locked to one end of the fourth adjusting member 147 to fix the third connecting member 144 and The relative position of the fourth connector 146.

Moreover, the slide rail 149 is disposed on the second support member 162 of the bracket 16, and the slide member 148 is coupled to the fourth joint member 147 and slidably disposed in the slide rail 149. Therefore, in response to the size of the different display planes 18, the user can slide the slider 148 in the direction of the third axis Z relative to the display plane 18 to adjust the position of the light-emitting module 12 relative to the display plane 18 in the direction of the third axis Z. The light curtain 20 formed by the light module 12 can cover the entire display plane 18.

In this embodiment, the bracket 16 includes a first support member 160 and a second support member 162 , and the first support member 160 is slidably coupled to the second support member 162 . The projector 10 is coupled to the first support 160 and the display plane 18 is coupled to the second support 162. Since the first support member 160 is slidably coupled to the second support member 162, the user can also slide the first support member 160 relative to the display plane 18 in the direction of the third axis Z to adjust the projector 10 at the third axis Z. The position of the plane 18 is displayed relative to the direction.

Please refer to FIG. 6. FIG. 6 is a perspective view of a projection system 1' having a touch function according to another embodiment of the present invention. The main difference between the projection system 1 ′ and the projection system 1 described above is that the projection system 1 ′ further includes three contacts 22 , which are disposed on the illumination module 12 . During the operation of the user operating the adjustment mechanism 14 to rotate the light module 12, the three contacts 22 can be used to assist the user in determining whether the light curtain 20 has been parallel to the display plane 18. Since the three points can determine a plane, when the adjusting mechanism 14 rotates the light emitting module 12 so that the three contacts 22 simultaneously contact the display plane 18, it indicates that the light curtain 20 has been parallel to the display plane 18. In addition, a plurality of holes may be formed on one side of the light-emitting module 12, and the three-contact members 22 are detachably inserted into the plurality of holes, so that the contacts 22 are illuminated by the light-emitting module after the correction is completed. 12 is removed, and each contact member 22 is selectively insertable into a different hole to adjust the position of the desired correction. It should be noted that the components of the same reference numerals as those shown in FIG. 1 are substantially the same, and will not be described again.

Please refer to FIG. 7. FIG. 7 is a diagram showing touch work according to another embodiment of the present invention. A perspective view of a projection system 1". The main difference between the projection system 1" and the projection system 1' described above is that each of the contacts 22 of the projection system 1" includes a sensor 220 (eg, a contact sensor). The illuminating module 12 includes a controller 120 and a driving mechanism 122. The controller 120 is electrically connected to each of the inductors 220 and the driving mechanism 122. In this embodiment, each of the sensors 220 is used to sense the corresponding Whether the contact 22 contacts the display plane 18. The drive mechanism 122 may be comprised of a motor, a gear set, a drive shaft, etc. for driving the adjustment mechanism 14 described above. When at least one of the three contacts 22 does not contact the display plane 18 At this time, the light curtain 20 is not parallel to the display plane 18. At this time, the controller 120 controls the driving mechanism 122 to drive the adjustment mechanism 14 to rotate the light emitting module 12 until the three contacts 22 simultaneously contact the display plane 18. In other words, use In addition to manually operating the adjustment mechanism 14, the adjustment mechanism 14 can also be automatically driven by the projection system 1". It should be noted that the components of the same reference numerals as those shown in FIG. 1 are substantially the same, and will not be described again.

Please refer to FIG. 8. FIG. 8 is a perspective view of a projection system 3 with a touch function according to another embodiment of the present invention. The main difference between the projection system 3 and the projection system 1 described above is that the adjustment mechanism 34 of the projection system 3 includes a connecting member 340, a universal joint 342, a first locking member 344 and a second locking member 346. It should be noted that the components of the same reference numerals as those shown in FIG. 1 are substantially the same, and will not be described again. In this embodiment, the projector 10 is coupled to the first support member 160 of the bracket 16 and the display plane 18 and the universal joint 342 are coupled to the second support member 162 of the bracket 16.

As shown in FIG. 8, the two ends of the connecting member 340 are respectively connected to the universal joint 342 and the light emitting module 12. Therefore, the connecting member 340 can rotate the light emitting module 12 in any direction via the universal joint 342 to adjust the angle of the light curtain 20 and the display plane 18.

In this embodiment, the connecting member 340 can include a first connecting rod 3400 and a second connecting rod 3402. The second connecting rod 3402 is pivotally connected to the first connecting rod 3400 by the first locking member 344, the universal joint 342 is connected to the first connecting rod 3400, and the lighting module 12 is pivotally connected to the second by the second locking member 346. Connecting rod 3402. The first locking member 344 cooperates with the nut 348 for locking the first connecting rod 3400 and the second connecting rod 3402. The second locking member 346 cooperates with the nut 350 to lock the second connecting rod 3402 and the light emitting module 12 . The user can loosen the nuts 348, 350 to unlock the first locking member 344 and the second locking member 346 to fine tune the angle of the light curtain 20 to the display plane 18. When the first locking member 344 is unlocked, the user can rotate the second connecting rod 3402 to drive the lighting module 12 to rotate relative to the first connecting rod 3400. When the second locking member 346 is unlocked, the user can rotate the light emitting module 12 to rotate the light emitting module 12 relative to the second connecting rod 3402. Moreover, since the first support member 160 is slidably coupled to the second support member 162, the user can also slide the first support member 160 relative to the display plane 18 to adjust the position of the projector 10 relative to the display plane 18.

In summary, since the projection system with touch function of the present invention is provided with an adjustment mechanism of the rotatable light-emitting module, when the light curtain is skewed relative to the display plane, any user can easily operate the adjustment mechanism to rotate the light. Module to adjust the angle between the light curtain and the display plane. Not only easy to operate, but also does not require special calibration instruments, which can save adjustments time.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1, 1', 1", 3‧‧‧ projection system

10‧‧‧Projector

12‧‧‧Lighting module

14, 34 ‧ ‧ adjustment institutions

16‧‧‧ bracket

18‧‧‧ Display plane

20‧‧‧Light curtain

22‧‧‧Contacts

120‧‧‧ Controller

122‧‧‧ drive mechanism

140‧‧‧First connector

141‧‧‧Second connector

142‧‧‧First adjustment

143‧‧‧Second adjustment

144‧‧‧ Third connector

145‧‧‧ Third adjustment

146‧‧‧fourth connector

147‧‧‧Fourth adjustment

148‧‧‧Sliding parts

149‧‧‧Slide rails

150, 151‧‧ ‧ pivot

152, 348, 350‧‧ ‧ nuts

160‧‧‧First support

162‧‧‧second support

220‧‧‧ sensor

340‧‧‧Connecting parts

342‧‧‧ universal joint

344‧‧‧First lock

346‧‧‧Second lock

1400‧‧‧First gear

1402‧‧‧ Third gear

1410‧‧‧ fifth gear

1420‧‧‧second gear

1430‧‧‧fourth gear

1440‧‧‧Fixed holes

1450‧‧‧ sixth gear

1460‧‧‧long slot

3400‧‧‧First connecting rod

3402‧‧‧Second connecting rod

X‧‧‧first axis

Y‧‧‧second axis

Z‧‧‧ third axis

1 is a perspective view of a projection system with a touch function according to an embodiment of the invention.

Fig. 2 is a combination diagram of the light-emitting module, the adjustment mechanism, and the bracket in Fig. 1.

Fig. 3 is a combination diagram of the light-emitting module, the adjustment mechanism, and the bracket in the first view.

Fig. 4 is a cross-sectional view showing the first connecting member and the first adjusting member in Fig. 2;

Fig. 5 is a cross-sectional view showing the second connecting member and the third adjusting member in Fig. 2;

Figure 6 is a perspective view of a projection system having a touch function according to another embodiment of the present invention.

Figure 7 is a perspective view of a projection system having a touch function according to another embodiment of the present invention.

Figure 8 is a perspective view of a projection system having a touch function according to another embodiment of the present invention.

1‧‧‧Projection system

10‧‧‧Projector

12‧‧‧Lighting module

14‧‧‧Adjustment agency

16‧‧‧ bracket

18‧‧‧ Display plane

20‧‧‧Light curtain

160‧‧‧First support

162‧‧‧second support

X‧‧‧first axis

Y‧‧‧second axis

Z‧‧‧ third axis

Claims (17)

A projection system with a touch function, comprising: a projector disposed opposite to a display plane; an illumination module disposed between the projector and the display plane and adjacent to the display plane for emitting light to form a light curtain; and an adjustment mechanism disposed on the light emitting module for rotating the light emitting module to adjust an angle of the light curtain and the display plane, the adjusting mechanism comprising a first connecting member and a second And a first adjusting member connected to the light emitting module and having a first gear, the second connecting member is pivotally connected to the first connecting member, and the first adjusting member is rotatably disposed The second connecting member has a second gear, and the second gear meshes with the first gear. When the first adjusting member rotates, the first adjusting member drives the lighting module to rotate relative to a first axis. The first axis is parallel to the display plane. The projection system of claim 1, wherein the first connecting member is pivotally connected to the lighting module and further has a third gear, the adjusting mechanism further comprising a second adjusting member fixed to the The light-emitting module has a fourth gear, and the fourth gear meshes with the third gear. When the second adjusting member rotates, the second adjusting member drives the light-emitting module to rotate relative to a second axis. The two axes are parallel to the display plane and perpendicular to the first axis. The projection system of claim 1, wherein the adjustment mechanism further comprises a third connecting member and a third adjusting member, the third connecting member and the third connecting member The second connecting member is pivotally connected, and the second connecting member has a fifth gear. The third adjusting member is rotatably disposed on the third connecting member and has a sixth gear. The sixth gear meshes with the fifth gear. When the third adjusting member rotates, the third adjusting member drives the lighting module to rotate relative to a third axis, and the third axis is perpendicular to the display plane. The projection system of claim 3, wherein the adjustment mechanism further comprises a fourth connecting member and a fourth adjusting member, wherein the third connecting member has a plurality of fixed holes arranged at intervals, the fourth The connecting member is slidably sleeved on the third connecting member and has a long slot. The fourth adjusting member is detachably disposed in one of the long slot and the fixing holes to fix the third a connector and the fourth connector. The projection system of claim 4, wherein the adjustment mechanism further comprises a sliding member and a sliding rail, the sliding member is coupled to the fourth connecting member and slidably disposed in the sliding rail. The projection system of claim 5, further comprising a bracket, the bracket comprising a first support member and a second support member, the first support member being slidably coupled to the second support member The projector is coupled to the first support member, and the display plane is coupled to the second support member, and the slide rail is disposed on the second support member. The projection system with a touch function as claimed in claim 1, further comprising a three-contact member disposed on the light-emitting module, wherein the adjusting mechanism is configured to rotate the light-emitting module, so that the three-contact member simultaneously contacts the display flat. The projection system of claim 7, wherein each of the contacts comprises a sensor, each of the sensors for sensing whether the corresponding contact member contacts the display plane, and the illumination module comprises a controller and a driving mechanism, the controller is electrically connected to each of the inductor and the driving mechanism, the driving mechanism is configured to drive the adjusting mechanism, when at least one of the three contacts does not touch the display In the plane, the controller controls the driving mechanism to drive the adjusting mechanism to rotate the lighting module until the three contacts simultaneously contact the display plane. The projection system of claim 1, wherein the adjustment mechanism comprises a connecting member and a universal joint, and the two ends of the connecting member are respectively connected to the universal joint and the light emitting module. The projection system of claim 9, wherein the adjustment mechanism further comprises a first locking member, the connecting member comprises a first connecting rod and a second connecting rod, wherein the second connecting rod is The first locking member is pivotally connected to the first connecting rod, the universal joint is connected to the first connecting rod, and the lighting module is connected to the second connecting rod, the first locking member is used for locking the first connecting The rod and the second connecting rod, when the first locking member is unlocked, the second connecting rod can drive the lighting module to rotate relative to the first connecting rod. The projection system of claim 10, wherein the adjustment mechanism further comprises a second locking member, the lighting module is pivotally connected to the second connecting rod by the second locking member, the second The locking member is configured to lock the second connecting rod and the lighting module, and when the second locking member is unlocked, the lighting module is rotatable relative to the second connecting rod. The projection system of claim 9 further comprising a bracket, the bracket comprising a first support member and a second support member, the first support member being slidably coupled to the second support member The projector is coupled to the first support member, and the display plane and the universal joint are coupled to the second support member. The projection system with touch function according to claim 1, wherein the illumination module is used to emit invisible light. A projection system with a touch function, comprising: a projector disposed opposite to a display plane; an illumination module disposed between the projector and the display plane and adjacent to the display plane for emitting light to form a light curtain; an adjusting mechanism disposed on the light emitting module for rotating the light emitting module to adjust an angle of the light curtain and the display plane; and three contact members disposed on the light emitting module, The adjusting mechanism is configured to rotate the light emitting module such that the three contacts simultaneously contact the display plane. The projection system of claim 14 , wherein the adjustment mechanism comprises a first connecting member, a second connecting member and a first adjusting member, wherein the first connecting member is connected to the lighting module and The first connecting member is pivotally connected to the first connecting member, the first adjusting member is rotatably disposed on the second connecting member and has a second gear, the second gear and the first gear A gear is engaged, and when the first adjusting member rotates, the first adjusting member drives the lighting module to rotate relative to a first axis, and the first axis is parallel to the display plane. The projection system of claim 15 , wherein the first connecting member is pivotally connected to the lighting module and further has a third gear, the adjusting mechanism further comprising a second adjusting member fixed to the The light-emitting module has a fourth gear, and the fourth gear meshes with the third gear. When the second adjusting member rotates, the second adjusting member drives the light-emitting module to rotate relative to a second axis. The two axes are parallel to the display plane and perpendicular to the first axis. The projection system of claim 15 , wherein the adjustment mechanism further comprises a third connecting member and a third adjusting member, the third connecting member is pivotally connected to the second connecting member and the second connecting member The connecting member has a fifth gear, the third adjusting member is rotatably disposed on the third connecting member and has a sixth gear, the sixth gear meshes with the fifth gear, when the third adjusting member rotates The third adjusting member drives the light emitting module to rotate relative to a third axis, and the third axis is perpendicular to the display plane.