Projector

Abstract

Projector (300), including: a body (200) with a top surface; a light output device provided inside the body (200) to output an image towards the upper surface; a cover (100) that covers the upper surface and is pivotably connected to the body (200); and a controller (480) configured to invert the image depending on an angle formed by the cover (100) and the top surface, wherein the controller (480) is configured to control the light output device such that the light output device projects an inverted output of the image when the angle is equal to or greater than a predetermined angle, and wherein the controller (480) is configured to control the light output device such that the light output device does not project an inverted output of the image when the angle is less than the predetermined angle.

Description

[Technical field]

[0001] The present disclosure relates to a projector. [Background]

[0002] A projector is a device for enlarging an image and displaying the enlarged image on a projection screen or similar white, flat surface. The projector can be used to make the same information available to a large audience.

[0003] Recently, a technology has been developed for small projectors to project images stored in portable devices or screens to the outside.

[0004] A lamp that emits white light, an LED light source, or laser diodes can be used as the light source for a projector.

[0005] The state of the art can be found in DE 10 2016 003 867 A1, which discloses a smartphone, a tablet computer or a display as an overhead projector, in DE 18 899 35 U, which discloses a tank cap with a magnetic closure, in KR 10 2007 0 021 206 A, which discloses a projector, and in KR 10 2011 0 097 384 A, which discloses a projector capable of changing the projection direction of light according to a predetermined angle. [Revelation][Technical Problem]

[0006] One objective of the present disclosure is to provide a projector that inverts an image depending on an angle formed by a cover with a mirror and a body.

[0007] Another goal is to provide a projector that outputs a rectangular image even when the reflection angle of a mirror changes.

[0008] Another goal is to provide a projector in which a mirror arrangement is combined with or separated from a cover, depending on the angle formed by the cover and a body. [Technical solution]

[0009] To achieve the objectives, a projector according to one embodiment of the present disclosure may include: a body with a top surface; a light output unit provided inside the body and outputting an image towards the top surface; a cover covering the top surface and pivotably connected to the body; and a control for inverting the image depending on an angle formed by the cover and the top surface.

[0010] The cover can include a first side connected to the body and a second side facing the first side, and the projector can include a mirror arrangement facing the second side and an axis of rotation adjacent to the second side and connected to the cover.

[0011] The mirror arrangement can be oriented towards the light output unit.

[0012] The cover may include a magnet connected to the lower surface of the cover, and the mirror assembly may include a metal part connected to the upper surface of the mirror assembly and associated with the magnet.

[0013] The mirror arrangement can have one side facing the axis of rotation, and the side can move far away from or closer to the cover according to a rotation of the mirror arrangement.

[0014] The mirror arrangement can reflect an image output by the light output unit.

[0015] The mirror arrangement may include a spring connected to the axis of rotation, and the spring may exert a restoring force on the axis of rotation so that when the side has moved far away from the cover, it moves closer to the cover.

[0016] The body may have a projection adjacent to the first side and having a curved surface, and the cover may include: a third side connecting the first and second sides; a lever extending along the third side, adjacent to the third side, and performing a rocking motion; a slider projecting from the lever, adjacent to the first side, and in contact with or separated from the curved surface; and a push rod extending from the lever, adjacent to the second side, and positioned between the cover and the mirror assembly.

[0017] The slider can move upwards and the push rod downwards as the slider moves along the curved surface.

[0018] An angle formed by the mirror arrangement and the cover can increase as the push rod moves downwards.

[0019] The mirror assembly may include a groove formed on the upper side, and the push rod may be received in the groove.

[0020] The mirror arrangement can come into contact with the upper side of the body.

[0021] The projector may include an elastic part that extends from the lever and is adjacent to the slider.

[0022] The elastic part can exert a restoring force on the lever, so that when the slider is moved upwards, the lever moves the slider downwards.

[0023] The lever can be positioned on one side of the mirror assembly. [Beneficial effects]

[0024] The effects of the projector according to the present disclosure are described as follows.

[0025] According to at least one embodiment of the present disclosure, it is possible to invert an image depending on the angle formed by the cover with the mirror and the body.

[0026] According to at least one embodiment of the present disclosure, it is possible to output a rectangular image even when the reflection angle of the mirror changes.

[0027] According to at least one embodiment of the present disclosure, the mirror arrangement can be combined with or separated from the cover, depending on the angle formed by the cover and the body.

[0028] The further scope of application of the present disclosure will become clear from the detailed description below. However, the person skilled in the art will appreciate that various modifications and variations can be made without departing from the spirit or scope of the present disclosure, and therefore the detailed description and a particular embodiment, such as a preferred embodiment of the present disclosure, should be regarded as illustrative. [Description of the characters] Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16, Fig. 17, Fig. 18, Fig. 19, Fig. 20, Fig. 21 to Fig. Figure 22 are diagrams illustrating an example of a projector according to an embodiment of the present disclosure. Fig. Figure 23 is a diagram showing a configuration of the projector according to an embodiment of the present disclosure. Fig. 24, Fig. 25, Fig. 26, Fig. 27, Fig. 28, Fig. 29, Fig. 30, Fig. 31, Fig. 32, Fig. 33 to Fig. Figure 34 are diagrams showing an embodiment of a projector control system according to an embodiment of the present invention. [Execution of the invention]

[0029] In the following description, identical or similar elements are assigned the same reference numbers, and duplicate descriptions for the same reference numbers can be omitted.

[0030] In the following description, even if the embodiments are described with reference to specific figures, references may be made, if necessary, to reference numbers that do not appear in the specific figures, and reference numbers that do not appear in the specific figures may be reference numbers in the other drawings. Use only if indicated.

[0031] Terms such as first, second, A, B, (a), (b), top side, bottom side, and the like, used in the following description, may be employed. These terms serve only to distinguish the component from other components, and the nature, sequence, or arrangement of the component is not restricted by the term.

[0032] The suffixes “module” and “unit” for components used in the following description are only specified or mixed for the sake of simplifying the specification and have no independent meaning or role.

[0033] With reference to Fig. A direction parallel to the length of a projector 300 can be designated as the first direction DR1, +x-axis direction, -x-axis direction, left or right direction. The +x-axis direction can be the right direction. The -x-axis direction can be the left direction. A direction parallel to the width of the projector 300 can be designated as the third direction DR3, +z-axis direction, -z-axis direction, forward or backward direction. The +z-axis direction can be forward or backward direction. The -z-axis direction can be backward or backward direction. A direction parallel to the height of the projector 300 can be designated as the second direction DR2, +y-axis direction, -y-axis direction, upward or downward direction. The +y-axis direction can be upward direction. The -y-axis direction can be downward direction.The third direction, DR3, can be perpendicular to the first direction, DR1, and / or the second direction, DR2. The first direction, DR1, and the second direction, DR2, can together be referred to as the horizontal direction. The third direction, DR3, can be referred to as the vertical direction. A left-to-right direction, LR, can be parallel to the first direction, DR1, and an up-and-down direction, UD, can be parallel to the second direction. The projector 300 can comprise a body 200 and a cover 100. The body 200 can also be referred to as the main body 200, main assembly 200, or assembly 200. The cover 100 can also be referred to as the sub-body 100, body 100, sub-assembly 100, or assembly 100.

[0034] In relation to Fig. 2. A 300' projector can include a 142' mirror. The 142' mirror can be combined with a 100' cover. The 142' mirror can be integrated into the 100' cover. The angle formed by the 100' cover and the 200' body can be the same as the angle formed by the 142' mirror and the 200' body. The 142' mirror can reflect the light projected by the 200' body.

[0035] With reference to Fig. 3. The body 200 can include a cover 210 and a housing 220. The cover 210 can be referred to as a plate 210 or an upper plate 210. The housing 220 can provide an interior. The cover 210 can cover the upper surface of the housing 220. The cover 210 can include the holes 211 and 212. An illustration unit (451, see Fig. 18) Light can emanate from the interior of the body 200, and the light emanating from the imaging unit 451 can pass through the hole 211. Projections 213 and 214 can adjoin the hole 212. The projections 213 and 214 can be referred to as cams 213 and 214. The projections 213 and 214 can have a curved surface CS.

[0036] With reference to Fig. 4. The cover 100 can include an outer cover 110 and a joint 120. The outer cover 110 can be referred to as cover 110, housing 110, or plate 110. The joint 120 can be referred to as joint assembly 120.

[0037] With reference to Fig. 5. The cover 100 can include the outer cover 110, a body 130, a mirror assembly 140, and the hinge 120. The body 130 can be referred to as the cover 130. The mirror assembly 140 can be referred to as the mirror 140. The body 130 can be combined with the hinge 120 and the outer cover 110. The mirror assembly 140 can include a mirror 142 and a body 141. The cover 100 can include shock-absorbing elements 131a, 131b, and 131c. The shock-absorbing elements 131a, 131b, and 131c can dampen impacts when the cover 100 covers the body 200.

[0038] In relation to Fig. 6. Mirrors 142' and 142 can form an angle α with bodies 200' and 200. Referring to (a) of Fig. 6. The cover 100' can have a length L1. If the angle α is formed by the cover 100' and the body 200', the mirror 142' may not reflect all the light projected by the body 200'. If the mirror 142' is extended by a length L2, the mirror 142' can reflect all the light projected by the body 200'. Here, a minimum length of the mirror 142' for reflecting all the light projected by the body 200' can be L4. With respect to (b) of Fig. 6. The cover 100 can have a length L1. If the angle α is formed by the cover 100 and the mirror arrangement 140, an angle β can be formed by the cover 100 and the body 200. The angle β can be smaller than the angle α. If the angle α is formed by the cover 100 and the mirror 142, the mirror 142 can reflect all the light projected by the body 200. Here, a minimum length of the mirror 142 for reflecting all the light projected by the body 200 can be L3. Comparing (a) of Fig. 6 and (b) of Fig. 6. The length L3 can be smaller than the length L4. That is, if the mirror 142' is integrated into the cover 100', the length of the cover 100' or of the mirror 142' can increase compared to a case where the mirror 142 rotates relative to the cover 100'. As in the case of (b) of Fig. 6. The size of the projector can be reduced by rotating the mirror 142 relative to the cover 100.

[0039] With reference to Fig. 7. The cover 100 can rotate on the joint 120. When the cover 100 is open, the cover 210 can be exposed. When the cover 100 is open, the mirror assembly 140 can be separated from the cover 100. The mirror assembly 140 can then come into contact with the cover 210. The light emitted by the imaging unit 451 can pass through the hole 211 and then be reflected by the mirror assembly 142.

[0040] With reference to Fig. In case 8, the cover can be opened 100 times further than in the case of Fig. 7. The light emitted by the imaging unit 451 can be emitted outwards after passing through the hole 211 without being reflected by the mirror 142. Since the light emitted by the imaging unit 451 does not pass through the mirror 142 here, an inverted image can be formed compared to the case of Fig. 7 will be output. A controller (480, see Fig. 23) can reverse the output of imaging unit 451, and the light output by imaging unit 451 can be a forward-facing image, as in Fig. 7 shown.

[0041] With reference to Fig. 9. The Projector 300 can be used in a room formed by walls WL1 and WL2 and a ceiling CE. The Projector 300 can project an image IW1 onto wall WL1. The height of the image IW1 from the floor can be a height at which a user is looking straight ahead. Wall WL1 can be a projection screen.

[0042] With reference to Fig. 10. The angle formed by the cover 100 and the body 200 of the projector 300 can be compared to the case of Fig. Magnify by 9. The Projector 300 can project an image IW2 higher than in the case of Fig. 9. The image IW2 can be positioned adjacent to the wall WL1 and the ceiling CE. Here, the user 600 can look upwards. For example, the user 600 can lean back in a chair 610 and look upwards.

[0043] With reference to Fig. 11. The angle formed by the cover 100 and the body 200 of the projector 300 can be adjusted compared to the case of Fig. Magnify by 10. For example, the angle formed by the cover 100 and the body 200 can be 90°. The projector 300 can project an image IC onto the ceiling CE. Here, the user 600 can look at the ceiling CE. For example, the user 600 can lie on the floor and look at the ceiling CE. The image IC must not be interchanged with images IW1 and IW2. The image IC projected onto the ceiling CE can be images IW1 and IW2 that have moved along the wall W1 to the ceiling CE.

[0044] With reference to Fig. The joint 120 can include a shaft 122 and the connecting parts 121 and 123. The connecting part 121 can be attached to the body 200. The connecting part 123 can be formed on the shaft 122. When the shaft 122 rotates, the connecting part 121 must not rotate.

[0045] With reference to Fig. 13. The cover 124 can be combined with the shaft 122. The cover 124 can be attached to the shaft 122 and rotate with the shaft 122. The cover 124 can be positioned between the connecting parts 121. The cover 124 can cover the shaft 122 in such a way that the shaft 122 is not exposed. The cover 124 must not cover the connecting part 123.

[0046] With reference to Fig. The body 130 can be connected to the joint 120. A screw S1 can penetrate a connecting part 134 and can be combined with the connecting part 123. A screw S2 can penetrate a connecting part 134 and can be combined with the body 130. The body can have a rectangular shape and include an opening 131. The opening 131 can have a rectangular shape. The connecting parts 132 and 133 can be formed on both sides of the opening 131. The body 130 can include a recess 135. The connecting element 134 can be positioned at the recess 135.

[0047] With reference to Fig. The mirror assembly 140 can have a shaft 147. The shaft 147 can be an axis of rotation A1. A key 144 can be combined with the shaft 147. The key 144 can rotate with the shaft 147. A spring 145 can be combined with the shaft 147. The mirror assembly 140 can be provided with a restoring force in a fourth direction DR4 by the spring 145. The fourth direction DR4 can be a direction of rotation with respect to the axis of rotation A1. The stopper 146 can be attached to the body 130. The stopper 146 can limit the range of rotation of the spring 144. The stopper 146 can fasten the mirror assembly 140 to the body 130. The stopper 146 must not impede the rotation of the mirror assembly 140. A groove 148 can be formed on the upper side of the mirror assembly 140. A connecting element 143 can be attached to the upper surface of the mirror arrangement 140. The connecting element 143 can be a metal part or a magnetic body.

[0048] With reference to Fig. 16. A connection 150 can have a rectangular shape. The connection 150 can include an opening 150b. The opening 150b can have a rectangular shape. The first parts 151a and 151b, the second parts 152a and 152b, the third parts 153a and 153b, the fourth parts 154a and 154b, and a fifth part 155 can form the edge of the connection 150. An elastic part 156 can be connected to the first parts 151a and 151b. The elastic part 156 can be opposite the fifth part 155. The fifth part 155 can be called a push rod 155. The connection 150 can include a hole 150a between the first parts 151a and 151b. Projections 157a and 157b can extend downwards from the first parts 151a and 151b. Projection 157a can be referred to as a slider 157a or a glider 157a. The third parts 153a and 153b can include holes 158a and 158b through which the third parts 153a and 153b are attached to the body 130.The third parts 153a and 153b can be the pivot point of the connection 150. The first parts 151a and 151b, the second parts 152a and 152b, and the third parts 153a and 153b can be collectively referred to as levers 151a, 152a, and 153a / 151b, 152b, and 153b. The levers 151a, 152a, and 153a / 151b, 152b, and 153b can perform a rocking motion. The first parts 151a and 151b and the second parts 152 and 152b can perform a rocking motion based on the third parts 153a and 153b.

[0049] With reference to Fig. 17. A screw S can penetrate connecting elements 159a and 159b and be attached to connecting parts 132 and 133. The connection 150 can rotate on the third parts 153a and 153b. The connection 150 can be attached or fixed to the body 130 by screw S and connecting parts 159a and 159b. Screw S and connecting elements 159a and 159b can limit the rotation range of the connection 150. The fifth part 155 can be mounted on the groove 148. Connecting part 134 and recess 135 can be positioned in hole 150a. Connecting part 134 and recess 135 can be positioned between the first parts 151a and 151b. A part of the mirror assembly 140 can be positioned in opening 150b. A cover 160 can be attached to the body 130. The cover 160 can also be referred to as an outer cover 160. The cover 160 can cover surfaces of the body 130 other than the bottom surface of the body 130.

[0050] With reference to Fig. The projections 213 and 157a can be associated with each other. Depending on the angle formed by the cover 100 and the body 200, the projections 213 and 157a can be in contact with each other or separate from each other. The projection 157a can slide along a curved surface CS. The elastic part 156 can be in contact with the cover 160. The elastic part 156 can exert a restoring force on the connection 150 in the direction of the -y-axis. The cover 160 can include a connecting element 161 on its inner side. The connecting element 161 can be a metal part or a magnetic body. The connecting elements 161 and 143 can be connected to each other by a magnetic force. The mirror assembly 140 can be combined with the cover 160 by means of the connecting elements 161 and 143. The key 144 can include a projection 144a. The lead 144a can be absorbed by the stopper 146.The stopper 146 can limit the rotation range of the key 144.

[0051] With reference to Fig. An angle θ1 can be formed between the cover 100 and the body 200. The mirror arrangement 140 must not be separated from the cover 160. The angle θ1 can be equal to or greater than 0°. The mirror 142 forms an angle θA with the body 200. The angle θ1 and the angle θA can have the same value. The projections 213 and 157a can be in contact with each other or separate from each other.

[0052] With reference to Fig. An angle θ2 can be formed by the cover 100 and the body 200. The mirror assembly 140 can be separated from the cover 160. The angle θ2 can be equal to or greater than 0°. The projection 213 can push the projection 157a upwards. When the projection 157a moves upwards, the connection 150 can rotate on the third parts 153a and 153b. The elastic part can exert a restoring force on the connection. The fifth part 155 can push the mirror assembly 140 downwards and can be separated from the groove 148. The mirror assembly 140 can rotate according to its weight. The mirror assembly 140 can come into contact with the cover 210 and stop the rotation according to the cover 210. The mirror assembly 140 can rotate slowly according to the restoring force exerted by the spring 145. An angle θB can be formed by mirror 142 and body 200. Angle θB can be larger than angle θ2.The angle θB can be larger than the angle θA.

[0053] With reference to Fig. An angle θ3 can be formed by the cover 100 and the body 200. The mirror assembly 140 can be separated from the cover 140. The angle θ3 can be larger than the angle θ2. The projections 213 and 157a can be separated from each other. The elastic part 156 can exert a restoring force on the connection 150. The connection 150 can rotate according to the restoring force. The fifth part 155 can move so that it comes into contact with or approaches the cover 160. The mirror assembly 140 can rotate according to its weight. The mirror assembly 140 can come into contact with the cover 210 and stop rotating according to the cover 210. The mirror assembly 140 can rotate slowly according to the restoring force provided by the spring 145. An angle θC can be formed by the mirror 142 and the body 200. Angle θ can be larger than angle θ3. Angle θC can be larger than angle θB.

[0054] With reference to Fig. 22 An angle θ4 can be formed by the cover 100 and the body 200. The mirror assembly 140 can rotate according to its weight and approach the cover 160. When the mirror assembly 140 approaches the cover 160, the connecting elements 161 and 143 can be connected to each other by a magnetic force. The mirror assembly 140 can be combined with the cover 160 using the connecting elements 161 and 143. The projections 213 and 157a can be separated from each other. The fifth part 155 can be mounted on the groove 148. The angle θ4 can be greater than the angle θ3. The mirror assembly 140 can rotate slowly according to the restoring force provided by the spring 145. The angle θD can be formed by the mirror 142 and the body 200. The angle θD can be the same as the angle θ4. The angle θD can be larger than the angle θC.

[0055] When the angle formed by cover 100 and body 200 is 0°, cover 100 can completely cover body 200. When the angle formed by cover 100 and body 200 increases, cam 213 and slide 157a can come into contact, and cam 213 can lift slide 157a. When cam 213 lifts slide 157a, mirror assembly 140 can be separated from cover 100. When the angle formed by cover 100 and body 200 is nearly 90°, cam 213 can be separated from slide 157a. When the angle formed by the cover 100 and the body 200 approaches 90°, the mirror arrangement 140 can gradually move closer to the cover 100, depending on its weight, in order to be combined with the cover 100 again.Then, as the angle formed by the cover 100 and the body 200 gradually decreases, the cam 213 can come into contact with the slide 157a and lift the slide 157a. When the cam 213 lifts the slide 157a, the mirror assembly 140 can be separated from the cover 100. The angle formed by the cover 100 and the body 200 becomes 0°, and the mirror assembly 140 can be combined with the cover 100.

[0056] According to Fig. 23. The projector 300 can include a communication unit 410, an input unit 420, a scanning unit 440, an output unit 450, an interface unit 460, a memory 470, a control unit 480, and a power supply 490. The in Fig. The 23 components shown are not strictly necessary for the realization of the Projector 300, and the Projector 300 may contain more or fewer components than those mentioned above.

[0057] The communication unit 410 can include one or more modules that enable communication between the projector 300 and a communication system, between the projector 300 and other projectors, or between the projector 300 and an external server. Furthermore, the communication unit 410 can include one or more modules that connect the projector 300 to one or more networks. The communication unit 410 can include at least one wireless internet module 413 or one short-range communication module 414.

[0058] The Input Unit 420 can include a user input unit for receiving information from a user. Audio or image data collected by the Input Unit 420 can be analyzed and processed into a user control command. The user input unit can generate input data according to a command entered by a user. The user input unit can include a keypad, a dome switch, a touchpad, a jog wheel, a jog switch, etc.

[0059] The scanning unit 440 can include one or more sensors for detecting at least one of the following: information about the projector 300's environment and user information. The scanning unit 440 can include an angle sensor 442 (rotation rate sensor or angle sensor) for detecting a rotation angle. The angle sensor 442 can be a sensor that measures the amount of reflected light using a mirror, a polarization-type sensor that measures the amount of light using a polarizer, an electrostatic angle sensor, or a displacement sensor that detects a rotational displacement. The scanning unit 440 can include a displacement sensor 441 (position sensor or distance sensor). The scanning unit 440 can include a photosensor 443 (photodetector). The photosensor 443 can also be referred to as a photodetector 443. The scanning unit 440 can include a proximity sensor 444.The Projector 300 disclosed in the present specification can now combine and utilize information acquired by at least two of the sensors mentioned above.

[0060] The output unit 450 produces an output related to the senses of sight, hearing, or touch and can include at least one imaging unit 451, one audio output module 452, and one optical output module 454. The imaging unit 451 can output light. The imaging unit 451 can also be referred to as the light output unit. The light output by the imaging unit 451 can be focused onto a screen to produce an image. The light output by the imaging unit 451 can be projected directly onto a screen or reflected by the mirror 142 and then projected onto the screen. The audio output module 452 can output information about an operating state of the projector 300 as sound. The optical output module 454 can output information about an operating state of the projector 300 as light.For example, if the projector 300 is in a standby state, meaning it is not operating while receiving power, the optical output module 454 can output blue light. If the projector 300 is operating, the optical output module 454 can output green light.

[0061] The interface unit 460 serves as a gateway to various types of external devices connected to the projector 300. The interface unit 460 can include at least one port for a wired / wireless headset, one port for an external charger, one wired / wireless data port, one memory card port, one port for connecting a device including an identification module, one audio input / output (I / O) port, one video I / O port, and one headphone port. The projector 300 can perform appropriate control over the connected external device in response to the connection of the external device to the interface unit 460. The interface unit 460 can be electrically or physically connected to an external device 500.

[0062] Memory 470 stores data that supports various functions of the Projector 300. Memory 470 can store a variety of application programs (or applications) that run on the Projector 300, as well as data and commands for operating the Projector 300. At least some of these application programs can be downloaded wirelessly from an external server. Furthermore, at least some of these application programs for basic Projector 300 functions may be pre-installed on the Projector 300 at the factory. Meanwhile, application programs can be stored in Memory 470, installed on the Projector 300, and executed to perform operations (or functions) of the Projector 300.

[0063] The controller 480 controls the overall operation of the projector 300 in addition to operations related to application programs. The controller 480 can process signals, data, and information input or output via the aforementioned components, or execute application programs stored in memory 470 to provide a user with appropriate information or functions, or to process information. The controller 480 can perform at least some of the functions described in Fig. The 23 components shown can be controlled to execute an application program stored in memory 470. Furthermore, the controller 480 can combine and operate at least two components contained in the projector 300 to execute an application program.

[0064] The 490 power supply is powered externally and internally by the 480 controller and supplies power to every component within the 300 projector. The 490 power supply may contain a battery, which can be either an embedded or a removable battery.

[0065] At least some of the components described above can interact to implement the operation, control, or control method of the projector 300 according to various embodiments described below. Furthermore, the operation, control, or control method of the projector 300 can be implemented by executing at least one application program stored in memory 470.

[0066] With reference to Fig. An angle θ5 can be formed by the cover 100 and the body 200. An angle θE can be formed by the mirror 142 and the body 200. Light projected from the imaging unit 451 parallel to the y-axis onto the mirror 142 can be reflected by the mirror 142 and can be parallel to the z-axis. For example, the angle θE can be 45° and the angle θ5 33.6°. The light reflected by the mirror 142 can be focused onto a screen to produce a rectangular or square image.

[0067] With reference to Fig. An angle θ6 can be formed by the cover 100 and the body 200. An angle θF can be formed by the mirror 142 and the body 200. The angle θ6 can be larger than the angle θ5. The angle θF can be larger than the angle θE. Light projected from the imaging unit 451 parallel to the y-axis onto the mirror 142 can be reflected by the mirror 142 and may not be parallel to the z-axis. For example, the angle θF can be 53° and the angle θ6 39°. The light reflected by the mirror 142 can be focused onto a screen to form a four-sided image that is neither a rectangle nor a square. For example, the image formed on the screen may be trapezoidal or parallelogram-shaped. An angle θ' can be a projection angle. For example, the angle θ' can be 16°.

[0068] With reference to Fig. 26. The controller 480 can detect an angle θ formed by the body 200 and the cover 100 (S1910). The angle θ can be detected by the angle sensor 442. The controller 480 can compare the angle θ with an angle B and an angle C (S1930). Angle B and angle C can be stored in memory 470. The controller 480 can perform a keystone correction if the angle θ is larger than angle B and smaller than angle C (S1950). The keystone correction can refer to correcting the distortion of a screen into a trapezoidal shape depending on a projection angle or projection distance into a square shape. When the keystone correction is performed, memory 470 can store a correction amount depending on the angle θ. The 480 controller cannot perform trapezoidal correction if the angle θ is smaller than the angle B or larger than the angle C (S1970).The imaging unit can emit light (S1990).

[0069] With reference to Fig. 27. A first image I1 and a second image I2 can be projected by the projector 300. The first image I1 can be distorted into a trapezoidal shape. The projector 300 can perform keystone correction, and the second image I2 can be a keystone-corrected image. The second image I2 can have a rectangular shape.

[0070] If the angle formed by the cover 100 and the body 200 is equal to or greater than an angle A, the light output of the imaging unit 451 may not reach the cover 100 (see Fig. 28) If, for example, the light output of the imaging unit 451 does not reach the cover 100, the light may be projected onto the ceiling. In contrast to a case where the light emitted by the imaging unit 451 is reflected by the mirror 142, an image formed after the light emitted by the imaging unit 451 has been reflected by the mirror may be the opposite of an image formed when the light emitted by the imaging unit 451 does not strike the mirror 142. Accordingly, if the angle formed by the cover 100 and the body 200 is equal to or greater than angle A, the controller 480 may control the imaging unit 451 to project an inverted output. Angle A may be referred to here as the critical angle. For example, angle A may be approximately 78.4°.

[0071] With reference to Fig. 29. The controller 480 can detect an angle θ formed by the body 200 and the cover 100 (S2310). The angle θ can be detected by the angle sensor 442. The controller 480 can compare the angle θ with the angle A (S2330). The angle A can be stored in the memory 470. The controller 480 can control the imaging unit 451 so that the imaging unit 451 projects an inverted output if the angle θ is greater than the angle A (S2350). The controller 480 must not invert the output of the imaging unit 451 if the angle θ is less than the angle A (S2370). The imaging unit can output light (S2390).

[0072] With reference to Fig. The mirror assembly 140 can include a first photosensor 443a. A second photosensor 443b can be provided in the mirror assembly 140 or in the cover 100. The first photosensor 443a can be located on one side near the projection 213. The second photosensor 443b can be located near the axis of rotation of the mirror assembly 140. The first photosensor 443a or the second photosensor 443b can detect light projected from the body 200. The first photosensor 443a can detect light and the second photosensor 443b cannot, depending on the angle formed by the cover 100 and the body 200. If at least one of the first photosensor 443a and the second photosensor 443b detects light, the mirror assembly 140 can reflect the light projected from the body 200.

[0073] With reference to Fig. 31. Depending on the angle formed by the cover 100 and the body 200, the first photosensor 443a and the second photosensor 443b may not detect any light. If the first photosensor 443a and the second photosensor 443b cannot detect any light, the mirror arrangement 140 may not reflect the light projected by the body 200, and the projector 300 may project light onto the ceiling. The controller 480 may reverse the output of the imaging unit 451, and an image projected onto the ceiling may be reversed. Fig. Be 30.

[0074] With reference to Fig. 32. The controller 480 can determine whether the first photosensor 443a detects light (S3210). If the first photosensor 443a detects light, the controller 480 cannot reverse the output of the imaging unit 451 (S3270). If the first photosensor 443a does not detect light, the controller 480 can determine whether the second photosensor 443b detects light (S3230). If the second photosensor 443b does not detect light, the controller 480 cannot reverse the output of the imaging unit 451 (S3250). The imaging unit 451 can output light (S3290).

[0075] With reference to Fig. The proximity sensor 444 can be provided in the body 200. The proximity sensor 444 can scan the cover 100. The proximity sensor 444 can detect the cover 100 if the distance between the proximity sensor 444 and the cover 100 is less than K. If the proximity sensor 444 detects the cover 100, the mirror assembly 140 can reflect the light projected by the body 200. If the proximity sensor 444 does not detect the cover 100, the mirror assembly 140 cannot reflect the light projected by the body 200, and the projector 300 can reverse the light output.

[0076] With reference to Fig.The proximity switch 444 can detect the distance from the proximity switch 444 to the cover 100. The controller 480 can compare the distance detected by the proximity sensor 444 with K (S3410). The value K can be stored in memory 470. The controller 480 can control the imaging unit 451 so that the imaging unit 451 projects an inverted output if the detected distance is equal to or greater than K (S3450). The controller 480 must not invert the output signal of the imaging unit 451 if the measured distance is less than K (S3430). The imaging unit 451 can output light (S3470).

Claims

[1] Projector (300), comprising: a body (200) with a top surface; a light output device provided inside the body (200) to output an image towards the upper surface; a cover (100) that covers the upper surface and is pivotably connected to the body (200); and a controller (480) configured to invert the image depending on an angle formed by the cover (100) and the top surface, wherein the controller (480) is configured to control the light output device such that the light output device projects an inverted output of the image when the angle is equal to or greater than a predetermined angle, and wherein the controller (480) is configured to control the light output device such that the light output device does not project an inverted output of the image when the angle is less than the predetermined angle. [2] Projector (300) according to claim 1, wherein the cover (100) has a first side connected to the body and a second side facing the first side, wherein the projector (300) further comprises a mirror arrangement (140) facing the second side, wherein the mirror arrangement (140) includes a rotating shaft (147) which adjoins the second side and is connected to the cover (100). [3] Projector (300) according to claim 2, wherein the mirror arrangement (140) faces the light output device. [4] Projector (300) according to claim 2, wherein the cover (100) includes a magnet connected to a lower surface of the cover (100), and wherein the mirror arrangement (140) further includes a metal part connected to an upper surface of the mirror arrangement (140) and associated with the magnet. [5] Projector (300) according to claim 2, wherein the mirror arrangement (140) has a side facing the rotating shaft (147), and wherein the side of the mirror arrangement (140) moves further away from or closer to the cover (100) according to a rotation of the mirror arrangement (140). [6] Projector (300) according to claim 5, wherein the mirror arrangement (140) further includes a spring (145) connected to the rotating shaft (147), and wherein the spring (145) exerts a restoring force on the rotating shaft (147) so that the side of the mirror arrangement (140) begins to approach the cover (100) when the side is at a certain distance from the cover (100). [7] Projector (300) according to claim 2, wherein the mirror arrangement (140) reflects the image output by the light output device. [8] Projector (300) according to claim 2, wherein the body (200) includes a projection (213, 214) adjacent to the first side of the cover (100) and having a curved surface, wherein the cover (100) has a third side which connects the first side and the second side, and where the coverage includes (100): a lever (151a, 152a, 153a, 151b, 152b, 153b) extending along the third side, adjacent to the third side and designed to move in a rocking motion; a slide (157a) projecting from the lever (151a, 152a, 153a, 151b, 152b, 153b), adjacent to the first side and configured to come into contact with or be separated from the curved surface of the projection (213, 214) of the body (200); and a push rod (155) extending from the lever (151a, 152a, 153a, 151b, 152b, 153b) to the second side and positioned between the cover (100) and the mirror assembly (140). [9] Projector (300) according to claim 8, wherein the slider (157a) is moved upwards and the push rod (155) is lowered while the slider (157a) moves along the curved surface. [10] Projector (300) according to claim 9, wherein an angle formed by the mirror arrangement (140) and the cover (100) increases when the push rod (155) is lowered. [11] Projector (300) according to claim 9, wherein the mirror arrangement (140) is configured to come into contact with the upper surface of the body (200). [12] Projector (300) according to claim 8, wherein the mirror arrangement (140) has a groove (148) formed on the upper surface and the push rod (155) is received in the groove (148). [13] Projector (300) according to claim 8, further comprising an elastic part (156) extending from the lever (151a, 152a, 153a, 151b, 152b, 153b) and adjacent to the slider (157a). [14] Projector (300) according to claim 13, wherein the elastic part (156) is configured to exert a restoring force on the lever (151a, 152a, 153a, 151b, 152b, 153b) so that the lever (151a, 152a, 153a, 151b, 152b, 153b) moves downwards on the slide (157a) when the slide (157a) is lifted. [15] Projector (300) according to claim 8, wherein the lever (151a, 152a, 153a, 151b, 152b, 153b) is positioned on one side of the mirror arrangement (140).

Images