JPWO2016129280A1 - Interface device - Google Patents

Abstract

A main body having a light source that emits laser light to provide an interface device capable of directing an imaging direction and a projection direction in desired directions, and a modulation unit that receives the laser light and modulates the incident laser light; The mirror is installed on the image forming surface of the image formed by the light modulated by the modulation means and reflects the light that forms the image toward the operation area for interface operation, and the area including the operation area is imaged A head having an imaging means, and the main body and the head are connected to each other via a rotating mechanism that is installed at a position where light for forming an image passes and in which an open portion through which light for forming an image passes is formed. Interface device.

Description

  The present invention relates to an interface device. In particular, the present invention relates to an interface device equipped with a projector using a phase modulation type spatial modulation element.

  In recent years, development of an interface device combining a projector and a camera has progressed. In such an interface device, an interactive operation is realized by projecting an image from a projector onto a projection surface and detecting the position and movement of an operator's hand or finger with respect to the projected image with a camera. Non-Patent Document 1 discloses an interface device called an Everywhere Displays Projector (hereinafter referred to as an ED projector) using a projector and a camera.

  Patent Document 1 discloses an interface device for directly instructing a screen on which an image is projected by a projector. In the device main body of the interface apparatus of Patent Document 1, a camera lens and a projector lens are arranged close to each other so that their optical axes substantially coincide. Therefore, an image projected by the projector can be captured by the camera without independently controlling the camera and the projector.

  In a wearable interface device that performs an interactive operation by combining a projector and a camera, as shown in FIG. 39, the projection direction of the projector may deviate from a desired direction depending on the body shape of the person wearing it and how it is worn. . In addition, at present, as shown in FIG. 40, when the projection direction of the projector is shifted due to a change in posture of the person who wears the apparatus, it is necessary to remount the apparatus.

  In the wearable interface device, it is assumed that an operator who wears the device moves. Therefore, if it becomes necessary to remount the device every time the projection direction of the projector is deviated, the operability is lowered. In addition, the interface device can be applied to various works, but changing the mounting state of the device every time the type of work changes leads to a decrease in operability.

  Therefore, it is required for the apparatus main body that the projection angle of the projector and the imaging direction of the camera be variable.

  Patent Document 2 discloses a mobile terminal device with a camera that can change the shooting direction of the camera by an instruction from a keyboard. The mobile terminal device with a camera of Patent Document 2 includes a camera unit having a turntable that mounts a camera lens and a light receiving unit and rotates around the vertical axis of the mobile terminal device.

  Patent Document 3 discloses a portable terminal device that photographs a subject in an arbitrary direction and reliably collects sound emitted from the subject. In the portable terminal device of Patent Literature 3, a rotating body in which a camera shooting window and a microphone sound collection port are mounted in the same direction is rotatable with respect to an end of a casing constituting the portable terminal device. It is pivotally supported.

JP 2012-160079 A Japanese Patent Laying-Open No. 2005-275126 JP 2004-258916 A

C. Pinhanez, “Everywhere Displays Project”, [online], IBM, [May 7, 2014 search], Internet <URL: http: // www. research. ibm. com / people / p / pinhanez / publications / ubicomp01. pdf>

  If the camera lens and the projector lens are arranged close to each other as in Patent Document 1, the optical axes of the camera and the projector can be substantially matched, and the unit including the camera and the projector can be downsized. And if patent document 2 and patent document 3 make it the structure which makes a miniaturized unit movable independently of an apparatus, when the projection direction of a projector and the imaging direction of a camera shift, the angle of a unit will be changed. By changing the projection direction, the projection direction can be adjusted. However, in configurations such as Patent Document 2 and Patent Document 3, if the light source of the projector is kept in the apparatus, the optical system from the light source to the projection lens is displaced, and an image cannot be projected. For this reason, a light source must be placed inside a unit that is configured separately from the apparatus, and there is a problem that there is a limit to the miniaturization of the unit.

  An object of the present invention is to provide an interface device capable of directing an imaging direction and a projection direction in desired directions.

  An interface apparatus according to the present invention includes a main body having a light source that emits laser light, a modulation unit that receives the laser light and modulates the incident laser light, and an image formed by the light modulated by the modulation unit. A head installed on an image forming surface and including a mirror that reflects light that forms an image toward an operation area for interface operation; and a head that has an imaging unit that captures an area including the operation area. Are connected to each other through a rotation mechanism that is provided at a position where light for forming an image passes and in which an opening through which light for forming an image passes is formed.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the interface apparatus which can orient | assign the imaging direction and a projection direction to desired direction.

1 is a perspective view of an interface device according to a first embodiment of the present invention. 1 is a front view of an interface device according to a first embodiment of the present invention. It is a conceptual diagram which shows an example which an operator wears the interface apparatus which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the function structure of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a conceptual diagram for demonstrating the internal structure and rotation mechanism of the main body of the interface apparatus which concern on the 1st Embodiment of this invention. It is a perspective view of an example of the rotation mechanism of the interface device concerning a 1st embodiment of the present invention. It is sectional drawing of an example of the rotation mechanism of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a perspective view of a head of an interface device concerning a 1st embodiment of the present invention. It is a perspective view of the head of the interface device concerning a 1st embodiment of the present invention. It is a front view of a head of an interface device concerning a 1st embodiment of the present invention. It is a side view of the head of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a conceptual diagram which shows the structural example of the mirror of the interface apparatus which concerns on the 1st Embodiment of this invention. It is sectional drawing of the head of the interface apparatus which concerns on the 1st Embodiment of this invention. It is sectional drawing for demonstrating the path | route of the light in the head of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a conceptual diagram which shows the other structural example of the mirror of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a conceptual diagram which shows the structural example of the aperture of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a conceptual diagram for demonstrating the structural example of the aperture of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a conceptual diagram which shows the other structural example of the aperture of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a conceptual diagram of the rotation mechanism of the modification 1 of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a perspective view of the rotation mechanism of the modification 1 of the interface apparatus which concerns on the 1st Embodiment of this invention. It is sectional drawing of the rotation mechanism of the modification 1 of the interface apparatus which concerns on the 1st Embodiment of this invention. FIG. 10 is a cross-sectional view of the periphery of the rotation mechanism when the main body and the head are engaged in Modification Example 1 of the interface device according to the first embodiment of the present invention. It is a conceptual diagram of the rotation mechanism of the modification 2 of the interface apparatus which concerns on the 1st Embodiment of this invention. It is a perspective view of the rotation mechanism of the modification 2 of the interface apparatus which concerns on the 1st Embodiment of this invention. It is sectional drawing of the rotation mechanism of the modification 2 of the interface apparatus which concerns on the 1st Embodiment of this invention. In the interface device concerning a 1st embodiment of the present invention, it is a key map of the structure for fixing a head to a main part. It is a front view of the interface apparatus which concerns on the 2nd Embodiment of this invention. It is a conceptual diagram for demonstrating the internal structure and rotation mechanism of the main body of the interface apparatus which concern on the 2nd Embodiment of this invention. It is sectional drawing of an example of the rotation member of the interface apparatus which concerns on the 2nd Embodiment of this invention. It is a front view of the modification of the interface apparatus which concerns on the 2nd Embodiment of this invention. It is sectional drawing of the modification of the rotation member of the interface apparatus which concerns on the 2nd Embodiment of this invention. It is a front view of the interface apparatus which concerns on the 3rd Embodiment of this invention. It is a conceptual diagram for demonstrating the internal structure and rotation mechanism of the main body of the interface apparatus which concern on the 3rd Embodiment of this invention. It is a conceptual diagram for demonstrating the internal structure and rotation mechanism of the main body of the interface apparatus which concern on the 4th Embodiment of this invention. It is a conceptual diagram for demonstrating the automatic rotation mechanism of the interface apparatus which concerns on the 4th Embodiment of this invention. It is a conceptual diagram for demonstrating the automatic rotation mechanism of the modification of the interface apparatus which concerns on the 4th Embodiment of this invention. It is a conceptual diagram for demonstrating the internal structure and rotation mechanism of a main body and a head of the modification of the interface apparatus which concerns on the 4th Embodiment of this invention. It is a conceptual diagram for demonstrating the internal structure of the head of the interface apparatus which concerns on the 5th Embodiment of this invention. It is a conceptual diagram which shows the example of mounting | wearing of the interface apparatus which a head does not rotate with respect to a main body. It is a conceptual diagram for demonstrating the projection direction of the projection image at the time of changing the attitude | position with the interface apparatus which a head does not rotate with respect to a main body.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. However, the preferred embodiments described below are technically preferable for carrying out the present invention, but the scope of the invention is not limited to the following. Note that, in all the drawings used for describing the following embodiments, the same portions are denoted by the same reference symbols unless there is a particular reason, and repeated description of similar configurations and operations may be omitted.

(First embodiment)
First, an interface device 1 according to a first embodiment of the present invention will be described with reference to the drawings. 1 and 2 are conceptual diagrams showing the configuration of the interface device 1 according to the present embodiment. FIG. 1 is a perspective view of the interface device 1, and FIG. 2 is a front view of the interface device 1.

〔Constitution〕
As shown in FIGS. 1 and 2, the interface device 1 according to the present embodiment includes a main body 10, a head 20, and a mounting unit 50. The head 20 includes a projection lens 21 for projecting a projection image on the operation area of the operator, and a camera lens 25 that images the operation area.

  As shown in FIG. 3, the interface device 1 according to the present embodiment is mounted on, for example, an operator's chest. When the operator is facing the front as in the left side of FIG. 3, the head 20 projects a projection image toward the B direction that is the front of the operator. And even if it is a case where an operator bends forward like the right side of FIG. 3, the head 20 projects a projection image toward the same B direction as the case where the operator is facing the front. This function will be described below.

  FIG. 4 is a block diagram showing a functional configuration of the interface apparatus 1 according to the present embodiment. The interface device 1 includes a projection unit 2, an imaging unit 3, and a control unit 4.

  The projection unit 2 projects an image including a user interface (hereinafter referred to as UI) on the operation area 5 that receives an operation of the operator (UI: User Interface) under the control of the control unit 4.

  The imaging unit 3 captures an area including the operation area 5 where the interface operation is performed. The imaging means 3 can be realized by, for example, a general camera function. Moreover, the imaging means 3 may have a function which can image light of wavelengths other than visible light, such as infrared light and ultraviolet light. The imaging means 3 may include functions such as a depth sensor and a TOF (Time of Flight) camera.

  The control unit 4 controls the entire interface device 1. The control unit 4 acquires the image captured by the imaging unit 3, and recognizes the position and operation of the operator's finger or hand included in the acquired image as an operation. The control unit 4 provides the projection unit 2 with an appropriate image signal based on the recognized result, and causes the projection unit 2 to project the image signal as an image. In addition, the control unit 4 causes the imaging unit 3 to capture the position of each displayed image, reveals coordinates indicating the positional relationship between the projected image and the captured image, and controls the images to match each other.

  That is, the control unit 4 provides the projection unit 2 with image information corresponding to an operation performed on an image such as a UI in the area captured by the imaging unit 3 and projects the image information as an image. The projection means 2 is controlled.

  The control means 4 can be realized by the function of a computer including, for example, an arithmetic device and a control device. The control means 4 of the interface device 1 is preferably realized by a microcomputer including functions such as a CPU (Central Processing Unit) and a memory. The control means 4 may be realized by a device having a general computer function.

<Main body>
FIG. 5 is a conceptual diagram for explaining the configuration of the interface apparatus 1 according to the present embodiment. As shown in FIG. 5, the main body 10 of the interface device 1 includes a light source 11, a phase modulation type modulator 12, a Fourier transform lens 13, and an image processing unit 15.

  The light source 11 includes at least one laser light source that emits laser light having a specific wavelength. The light source 11 may have a plurality of light sources so as to emit laser beams having a plurality of wavelengths. The light source 11 may emit light having a wavelength in the visible light region, or may emit light having a wavelength other than visible light, such as an ultraviolet region or an infrared region.

The modulator 12 is a modulation means including a modulation element that modulates the laser light emitted from the light source 11. The modulation means receives the laser beam emitted from the light source 11 and modulates the incident laser beam.
The modulator 12 preferably includes a phase modulation type modulation element.

  A phase modulation type modulation element has a plurality of light receiving regions arranged in a lattice pattern. The control means (not shown) has parameters that determine the difference between the phase of the laser light incident on each light receiving region and the phase of the laser light emitted from each light receiving region, for example, optical characteristics such as refractive index and optical path length. Control to change. For example, the control unit changes the refractive index of each light receiving region by controlling the voltage applied to each light receiving region, and generates a difference in refractive index between the light receiving regions. The laser light incident on each light receiving region is appropriately diffracted based on the difference in refractive index between the light receiving regions. As a result, the phase distribution of the incident light incident on the display element is modulated according to the optical characteristics of each light receiving region.

  The phase modulation type modulation element is realized by, for example, a ferroelectric liquid crystal, a homogeneous liquid crystal, a vertical alignment liquid crystal, or the like. For example, a phase modulation type modulation element is realized using LCOS (Liquid Crystal on Silicon) or MEMS (Micro Electro Mechanical System).

  In the present embodiment, the incident angle of the laser beam is made non-perpendicular with respect to the display surface of the modulator 12. That is, the emission axis of the laser beam emitted from the light source 11 is inclined with respect to the display surface of the modulator 12. The phase modulation type modulation element (LCOS) only modulates the phase of the wavefront by changing the refractive index, not the polarization. Therefore, the light perpendicularly incident on the phase modulation type modulation element using the polarization beam splitter is returned to the incident direction after being modulated by the modulation element. For this reason, light cannot be vertically incident on a phase modulation type modulation element using a polarization beam splitter. If a beam splitter without polarization is used, light perpendicularly incident on the phase modulation type modulation element can be modulated and extracted, but the efficiency becomes ¼. This is because the light incident on the beam splitter splits in two directions when passing through the beam splitter and enters the modulation element with half the intensity, and the light modulated by the modulation element again becomes two when passing through the beam splitter. This is because it is divided into two directions and becomes half the strength. Therefore, in this embodiment, by setting the emission axis of the laser beam obliquely with respect to the modulator 12, light is incident on the modulator 12 without using a beam splitter, thereby improving the efficiency.

  Note that the modulation means may include an intensity modulation type modulation element. When the modulation unit is realized by a configuration including an intensity modulation type modulation element, the Fourier transform lens 13 can be omitted.

The Fourier transform lens 13 is a lens that Fourier transforms light phase-modulated by the modulator 12. That is, the Fourier transform lens 13 receives light whose phase is modulated by the modulator 12, and performs Fourier transform on the incident light.
The image Fourier-transformed by the Fourier transform lens 13 becomes an image in which a kind of diffraction grating forms an aggregate, and an image is formed by collecting light diffracted by these diffraction gratings.

  The image processing unit 15 performs a process of rotating the image in accordance with the rotation of the head 20. In other words, the image processing means 15 adjusts the projection image so as to face an appropriate direction by signal processing for forming the image so that the projection image does not rotate with the rotation of the head. The image processing unit 15 causes the modulator 12 to display an image on which a projection image whose rotation is corrected in accordance with the rotation of the head 20 is projected. For example, when the head is rotated +5 degrees with respect to the main body 10, the projected image is rotated clockwise or counterclockwise unless any image processing is performed. In such a case, the image processing means 15 may output to the modulator 12 an image for rotating the image formed on the image forming surface by the Fourier transform lens 13 by +5 degrees. That is, the image processing unit 15 performs image processing for rotating an image formed on the image forming surface in accordance with the rotation of the head 20 with respect to the main body 10.

  The above is the description of the configuration of the main body 10. The main body 10 may include components not shown in FIG.

<Rotation mechanism>
Further, as shown in FIG. 5, the head 20 is rotatably connected to the main body 10 by a rotation mechanism 30. The rotation mechanism 30 includes a main body side rotation unit 31 on the main body 10 side and a head side rotation unit 32 on the head 20 side. The rotation mechanism 30 is installed at a position where light modulated by the modulation means passes. The rotation mechanism 30 is formed with an open portion through which light modulated by the modulation means passes.

  6 and 7 are views in which the main body side rotation unit 31 is removed from the main body 10 and the head side rotation unit 32 is removed from the head 20 in order to explain the rotation mechanism 30. FIG. 6 is a perspective view of the rotation mechanism 30. FIG. 7 is a cross-sectional view of the rotating mechanism cut along a straight line passing through the optical axis F-F ′ in FIG. 6. 6 and 7 show a simple structure in which the head-side rotating portion 32 is engaged with the main-body-side rotating portion 31, and a specific structure will be described later.

  In the example of FIGS. 6 and 7, both the main body side rotation unit 31 and the head side rotation unit 32 have a cylindrical shape. The light focused by the Fourier transform lens 13 passes through the inside of the rotation mechanism 30 configured by the main body side rotation unit 31 and the head side rotation unit 32. That is, the rotation mechanism 30 is formed with an open portion through which light that has undergone Fourier transform by the Fourier transform lens 13 passes.

  6 and 7, the outer periphery of the head-side rotating unit 32 is engaged inside the main-body-side rotating unit 31, and the head-side rotating unit 32 can rotate inside the main-body-side rotating unit 31. Is engaged. In this case, the main body side rotating part 31 corresponds to a concave part, and the head side rotating part 32 corresponds to a convex part. Note that the main body side rotation unit 31 may be fitted inside the head side rotation unit 32. In this case, the main body side rotating part 31 corresponds to a convex part, and the head side rotating part 32 corresponds to a concave part.

  That is, one of the main body 10 and the head 20 has a convex portion on the wall portion through which the Fourier-transformed light passes. The other of the main body 10 and the head 20 has a concave portion that engages with the convex portion on the wall portion through which the Fourier-transformed light passes. The rotation mechanism 30 has a configuration in which a convex portion and a concave portion are engaged.

  In the present embodiment, the operator can adjust the angle of the head 20 with respect to the main body 10 to a desired angle by manually changing the angle of the head 20. The operator may change the angle of the head 20 each time the posture is changed, or may remain fixed. Further, the operator may adjust the angle of the head 20 according to the positional relationship with the object that projects the projected image.

  The above is the description of the rotation mechanism 30. The rotating mechanism 30 may include components that are not shown in FIGS.

<Head>
FIG. 8 is a perspective view of the head 20. FIG. 9 is a perspective view illustrating the internal configuration of the head 20 in the perspective view of FIG. FIG. 10 is a front view of the head 20. FIG. 11 is a side view of the head 20 as viewed from the rotating mechanism 30 side.

  As shown in FIG. 9, the head 20 includes a projection lens 21, a mirror 22, a camera lens 25, and a camera unit 26. Although not shown in FIGS. 8 and 9, the head 20 has an aperture described later.

  The projection lens 21 is a lens for projecting a projection image on the operation area 5. The light reflected by the mirror 22 is incident on the projection lens 21. The projection lens 21 enlarges and projects incident light as a projection image.

  The mirror 22 has a reflecting surface that reflects light. The mirror 22 receives the light focused by the Fourier transform lens 13 on the reflection surface and reflects it toward the projection lens 21. That is, the mirror 22 is installed on the image forming surface of the image formed by the light modulated by the modulation means, and reflects the light forming the image toward the operation area 5 for interface operation. The mirror 22 has, for example, a prism shape as shown in FIG. As shown in FIG. 10, the mirror 22 is arranged behind the projection lens 21 when viewed from the front of the head 20. The mirror 22 is not limited to a prism shape, but may be any shape that can reflect incident light.

  A hole 23 is formed in the reflecting surface 24 of the mirror 22 at a position where the 0th-order light included in the light converted by the Fourier transform lens 13 hits. As shown in FIG. 11, the mirror 22 is provided with a hole 23 at substantially the center of the opening portion of the rotation mechanism 30. As shown in FIG. 13, the hole 23 is formed so as to penetrate the mirror 22 from the reflecting surface 24. When the light focused by the Fourier transform lens 13 can pass through the base material of the mirror 22, the light only needs to pass from the position where the 0th-order light hits the reflecting surface 24. May not be formed. Further, when the range of the 0th-order light included in the light focused by the Fourier transform lens 13 is sufficiently small, or when the range including the 0th-order light is reflected, it is not necessary to form the hole 23 in the mirror 22.

  As shown in FIG. 14, the light 200 focused by the Fourier transform lens 13 passes through the opening of the rotation mechanism 30 and reaches the mirror 22. Of the light 200 that has reached the mirror 22, the zero-order light penetrates the mirror 22. Of the light 200 that reaches the mirror 22, light other than the zero-order light is reflected by the reflecting surface 24 and travels toward the projection lens 21.

  The mirror 22 may be configured as a mirror 220 having a thin film 250 formed on a substrate 240 such as glass as shown in FIG. The thin film 250 is formed in a mirror shape on the reflection surface of the mirror 220 and reflects the light focused by the Fourier transform lens 13. A hole 230 is formed in the thin film 250 at a position where the zero-order light included in the light converted by the Fourier transform lens 13 hits. The hole 230 may be formed so as to penetrate the substrate 240 or may be formed only in the thin film 250. However, when the substrate 240 is difficult to transmit light, it is preferable to form the hole 230 so as to penetrate the substrate 240.

  The camera lens 25 is a lens for imaging the operation area 5. The camera lens 25 has a configuration in which a single lens or a plurality of lenses are combined. For the camera lens 25, for example, transparent glass or plastic is used as a material.

  The camera unit 26 has a general camera function. Moreover, the camera part 26 may have a function which can image the light of wavelengths other than visible light, such as infrared light and ultraviolet light, for example. The camera unit 26 may have functions such as a depth sensor and a TOF (Time of Flight) camera.

  Although not shown, the camera unit 26 includes an image sensor, an image processor, an internal memory, and a data output unit.

  The imaging element is an element for imaging an area including the operation area 5 and acquiring an image signal. The imaging element is a photoelectric conversion element in which semiconductor components are integrated into an integrated circuit. The imaging element can be realized by a solid-state imaging element such as a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS), for example. Normally, an element that images light in the visible region is used as the imaging element, but an element that can image and detect electromagnetic waves such as infrared rays, ultraviolet rays, X-rays, gamma rays, radio waves, and microwaves may be used.

  The image processor is dedicated to image processing that performs image processing such as dark current correction, interpolation calculation, color space conversion, gamma correction, aberration correction, noise reduction, and image compression on image data captured by the image sensor. It is an integrated circuit. Note that the image processor can be omitted when outputting the image data without processing it. The image processor may be a processor designed to perform necessary processing.

  The internal memory is a storage element that temporarily stores image data that cannot be processed when image processing is performed by the image processor or processed image data. Note that image data captured by the image sensor may be temporarily stored in an internal memory. The internal memory may be realized by a general memory.

  The data output unit outputs the processed image data processed by the image processor to the control means 4.

  The camera lens 25 and the camera unit 26 described above correspond to the imaging unit 3 that captures an area including the operation area 5 where the interface operation is performed.

  FIG. 16 is a conceptual diagram for explaining the aperture 27 included in the head 20. When the phase modulation type modulator 12 is used as in the interface device 1 according to the present embodiment, it is preferable to provide an aperture in a portion where a Fourier transform image is formed so that unnecessary light is not projected.

  The aperture 27 has a function of removing high-order light contained in the light converted by the Fourier transform lens 13 and specifying an image region. FIG. 16 shows a rectangular frame-shaped aperture 27. The opening of the aperture 27 is opened smaller than the image area 28 from the modulator 12. In FIG. 16, the outer frame of the aperture 27 is not drawn, but the aperture 27 has a structure that blocks the periphery of the image area 28 from the modulator 12.

  It is preferable to install the aperture 27 at a position where the focal point is originally focused. In the mirror 22 of the present embodiment, it is desirable to arrange the aperture 27 on the reflection surface 24 of the mirror 22. However, when the mirror 22 as in this embodiment is used, it is difficult to arrange the aperture 27 on the reflecting surface 24. For example, the aperture 27 is disposed in the vicinity of the head-side rotation unit 32 in FIG. Note that the aperture 27 may be disposed between the mirror 22 and the projection lens 21. That is, the aperture 27 is preferably installed at the focal position of the Fourier transform lens 13, but may be deviated from the focal position as long as the function of removing high-order light can be exhibited.

  The aperture 27 is smaller than the rotation mechanism 30. The aperture 27 is sized to cut an unnecessary portion at the periphery of the image formed on the mirror 22. Note that the size and direction of the aperture are changed according to the aspect ratio image to be created.

  FIG. 17 is a conceptual diagram showing a relative relationship among the mirror 22, the aperture 27, the image region 28, and the projection lens 21 when the head 20 rotates with respect to the main body 10. When the head 20 rotates, the positional relationship between the image of the head 20 and the modulator 12 rotates, so that the image needs to be corrected on the modulator 12. If the area on which the image is displayed on the modulator 12 is changed, even if the aperture 27 is rectangular, the aperture 27, the image area 28, and the projection lens 21 are caused to follow the rotation of the head 20 as shown in FIG. It can be controlled so that the relative relationship does not change. However, in order to perform such image processing, it is necessary to build a complicated program.

  Therefore, it is preferable to use a circular aperture 271 as shown in FIG. If the circular aperture 271 is used, only the content image needs to be rotated on the screen on the modulator 12. Therefore, it is possible to control the relative relationship among the aperture 27, the image region 28, and the projection lens 21 without changing by following the rotation of the head 20 without using a complicated program. In addition, when the circular aperture 271 is used, the rotation mechanism 30 can be made smaller than when the rectangular aperture 27 is used, so that the apparatus can be easily downsized.

  The above is the description of the head 20. The head 20 may include components not shown in FIGS.

  The main body 10 and the head 20 are electrically connected by, for example, wiring provided inside the rotation mechanism 30. In that case, the wiring provided inside the rotation mechanism 30 is arranged at a position that does not affect the projection light. Further, the main body 10 and the head 20 may be electrically connected by a wiring provided outside without passing through the rotation mechanism 30, for example. In that case, it is preferable that the wiring has a length that does not hinder the rotation of the head 20 and does not interfere with the operation of the operator wearing the interface device 1.

  Information acquired by the camera unit 26 is transmitted from the head 20 to the main body 10 via the wiring described above. Note that the information acquired by the camera unit 26 may be transmitted to the main body 10 using infrared rays or electromagnetic waves. When infrared rays are used, data may be transmitted through the opening inside the rotation mechanism 30. In addition, when using electromagnetic waves, a general short-range wireless communication technique may be applied.

  The interface device 1 includes a power source (not shown) such as a primary battery or a secondary battery. The power source of the interface device 1 may be provided in either the main body 10 or the head 20. For example, when a power source is provided in the main body 10 or the head 20, as the above-described wiring, a power transmission wiring is provided in addition to a wiring for transmitting and receiving information acquired by the camera unit 26. Further, the power source of the interface device 1 may be provided in both the main body 10 and the head 20.

  Further, in FIG. 5 and the like, the rotation mechanism 30 is illustrated so as to be disposed on the upper side in the longitudinal direction of the head 20, but may be disposed near or below the center of the head 20 in the longitudinal direction. In that case, the mirror 22 is arranged in accordance with the position of the rotation mechanism 30 so that the optical axis F-F ′ does not deviate from the hole 23 of the mirror 22. When the rotation mechanism 30 is disposed near or below the longitudinal center of the head 20, the upper part of the mirror 22 may be a cavity, or the camera unit 26 may be disposed on the upper part of the mirror 22.

  As described above, in the present embodiment, the head on which the imaging unit and the projection unit are mounted is rotatably connected to the main body.

  Although the interface device according to the present embodiment may be easily realized at first glance, it is difficult to actually realize the interface device. A normal phase modulation projector is designed so that the zero-order light is shifted from the operation region by the lens system. However, in the case of such a normal configuration, in order to change the projection direction, it is necessary to change the direction of the entire projector. Therefore, it is necessary to change the direction of the entire apparatus.

  As shown in FIG. 14 and the like, the interface device according to the present embodiment has a structure that allows zero-order light to escape through a hole formed in a mirror. The hole of the mirror is opened toward the traveling direction (optical axis direction) of the zero-order light. Therefore, when the head is rotated about the optical axis, the projection direction can be changed by rotating the configuration subsequent to the mirror disposed in the head.

  In the present embodiment, the positional relationship between the imaging unit and the projection unit is important. Since the imaging unit can be sufficiently miniaturized as a camera function, it can be built in the head. As described above, the projection unit may include a light source, a modulator, and a Fourier transform lens in the main body, and a mirror, an aperture, and a rotation mechanism in the head. As a result, it is only necessary to incorporate a part of the projection unit and the imaging unit in the head, so that a small head that can rotate with respect to the main body can be realized.

  As a result, according to the present embodiment, it is possible to provide an interface device capable of directing the imaging direction and the projection direction in desired directions. That is, according to the interface device of the present embodiment, the imaging direction and the projection direction can be directed to a desired direction, so that an image can be displayed on a desired projection surface even if the posture of the user wearing the device changes. Can project.

(Modification)
Here, a modification of the interface device 1 according to the first embodiment will be described.

  19 to 22 are diagrams relating to the rotation mechanism 300 of the first modification.

  FIG. 19 is a cross-sectional view of the rotating mechanism 300 according to the first modification example cut along a cutting line passing through the optical axis F-F ′ together with the main body 10 and the head 20. The rotation mechanism 300 includes a main body side rotation unit 301 and a head side rotation unit 302 on the head 20 side.

  20 and 21 are views showing only the configuration of the rotation mechanism 300. FIG. The head-side rotation unit 302 includes a first head-side rotation unit 302-1 and a second head-side rotation unit 302-2. The main body side rotating part 301 has a cylindrical shape, and has an outer edge part protruding so as to surround the outer edge of the tip part. The first head-side rotation unit 302-1 and the second head-side rotation unit 302-2 have an engagement structure that is engaged so as to wrap around the outer edge portion of the main body-side rotation unit 301. A part similar to the main body side rotation unit 301 may be provided in the head 20, and a part similar to the head side rotation unit 302 may be provided in the main body 10.

  In the main body side rotating unit 301, the first head side rotating unit 302-1 and the second head side rotating unit 302-2, the light focused by the Fourier transform lens 13 passes along the optical axis FF ′. For opening.

  FIG. 22 is a diagram in which the main body side rotation unit 301, the first head side rotation unit 302-1 and the second head side rotation unit 302-2 are engaged. In FIG. 22, no gap is drawn between the main body 10 and the head 20, but the head 20 is rotatably connected to the main body 10 by the rotation mechanism 300.

  That is, one of the main body 10 and the head 20 has a convex portion having an outer edge structure formed at the end portion on the wall portion through which the Fourier-transformed light passes. The other of the main body 10 and the head 20 has a concave portion in which an engagement structure for engaging with the outer edge structure of the convex portion is formed on the inner wall through which the Fourier-transformed light passes. The rotating mechanism is configured by engaging the outer edge structure of the convex portion with the engaging structure of the concave portion.

  According to the first modification, the connectivity of the head with respect to the main body can be improved, so that it becomes easier to handle.

  23 to 25 are diagrams relating to the rotation mechanism 310 of the second modification.

  FIG. 23 is a cross-sectional view of the rotating mechanism 310 according to the second modification example cut along a cutting line passing through the optical axis F-F ′ together with the main body 10 and the head 20. The rotation mechanism 310 includes a main body side rotation unit 311 and a head side rotation unit 312 on the head 20 side.

  24 and 25 are views showing only the configuration of the rotation mechanism 310. FIG. As shown in FIG. 25, the head-side rotating unit 312 is configured by a raceway ring 312-1 and a plurality of balls 312-2 (also referred to as rolling elements). A track structure that receives the plurality of balls 312-2 is provided on the outer periphery of the end of the main body side rotation unit 311. By engaging the head-side rotation unit 312 with the main-body-side rotation unit 311, the rotation mechanism 310 exhibits the function of a ball bearing. Note that the rotation function of the rotation mechanism 310 of the second modification may be realized by a structure similar to the rotation member 320 of the second embodiment described later. Further, the same part as the main body side rotating part 311 may be provided on the head 20 side, and the same part as the head side rotating part 312 may be provided on the main body 10 side.

  The main body side rotation unit 311 and the head side rotation unit 312 have openings through which the light focused by the Fourier transform lens 13 passes along the optical axis F-F ′.

  By engaging the main body side rotation unit 311 and the head side rotation unit 312, the head 20 is rotatably connected to the main body 10 by the rotation mechanism 310.

  That is, in the second modification, one of the main body 10 and the head 20 has a convex portion in which a track structure is formed along the outer periphery of the end portion on the wall portion through which the Fourier-transformed light passes. The other of the main body 10 and the head 20 has a concave portion in which an orbital ring that faces the orbital structure of the convex portion is formed on the inner wall through which the Fourier-transformed light passes. The rotation mechanism 310 has a configuration in which a track structure of a convex portion and a race ring of a concave portion are engaged via a plurality of rolling elements.

  In the case of a structure such as the rotation mechanism 300 of the first modification and the rotation mechanism 310 of the second modification, the head 20 automatically rotates according to the inclination of the main body 10, and the projection image from the head 20 is always in front. To be adjusted. Incidentally, it may be preferable for the operator that the projection image is fixed at a predetermined angle with respect to the main body 10. Therefore, a clasp (latch) for fixing the angle of the head 20 to the main body 10 at a predetermined angle may be provided.

  FIG. 26 shows a latch 41 for fixing the head 20 to the main body 10. The latch 41 is connected to the upper side portion of the main body 10 by a jig 43 so as to be slidable in the vertical direction. For example, a groove 45 into which the lower end of the latch 41 is fitted is provided in the upper part of the head 20. When the latch 41 is pushed downward, the lower end of the latch 41 is fitted into the groove 45, and the head 20 can be fixed to the main body 10. Further, the lower end of the latch 41 may be fitted into the gap between the main body 10 and the head 20. The head 20 is fixed even when it is rotated with respect to the main body 10. 26 is an example for fixing the head 20 to the main body 10, and the structure for fixing the head 20 to the main body 10 is not limited to the example of FIG.

  According to the second modification, the head can be fixed to the main body by using the clasp structure as shown in FIG. As a result, the head can be fixed and released as desired by the operator.

(Second Embodiment)
Next, an interface device according to a second embodiment of the present invention will be described with reference to the drawings.

  FIG. 27 is a front view of the interface device according to the present embodiment. FIG. 28 is a conceptual diagram for explaining the configuration of the interface apparatus according to the present embodiment. The interface device according to the present embodiment is different from the first embodiment in that the interface device has a detachable rotating mechanism (rotating member 320). Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  For example, as shown in FIG. 29, the rotating member 320 includes an outer ring 320-1, an inner ring 320-2, a plurality of rolling elements 320-3 that roll between the outer ring 320-1 and the inner ring 320-2, and a plurality of rolling elements 320-3. A rolling bearing structure including a holder 320-4 for holding the rolling element 320-3. The rotating member 320 may have a sliding bearing structure.

  The rotating member 320 is realized by, for example, a ball bearing having a plurality of balls as rolling elements 320-3, a roller bearing having a plurality of rollers as rolling elements 320-3, or the like. The rotating member 320 may be realized by, for example, a needle bearing, a tapered roller bearing, a spherical roller bearing, or the like.

  The rotating member 320 has such a size that the convex portion 321 of the main body 10 is fitted to the inner circumference of the inner ring 320-2 and the outer circumference of the outer ring 320-1 is fitted to the concave portion 322 of the head 20, for example. In this case, the opening part of the convex part 321 of the main body 10 becomes a light path. The rotating member 320 may be detachably engaged with the main body 10 and the head 20, but may be joined unless it is particularly necessary to detach.

  That is, one of the main body 10 and the head 20 has a convex portion on the wall portion through which the Fourier-transformed light passes. The other of the main body 10 and the head 20 has a recess on the inner wall through which the Fourier-transformed light passes. The rotation mechanism has a configuration in which an outer periphery of a rotation member 320 having an inner ring that is rotatably engaged with an outer ring is fitted in a recess, and an inner periphery of the rotation member 320 is fitted in a projection.

  As described above, according to the interface device according to the present embodiment, since the rotating member can be detached from the main body and the head, the engagement structure between the main body and the head and the rotating mechanism can be simplified. Moreover, according to this embodiment, general components, such as a ball bearing, can be used as a rotating member.

(Modification)
In the interface apparatus according to the present embodiment, a rotating member 325 as shown in FIGS. 30 and 31 may be used. The rotating member 325 includes a main body side rotating wheel 326, a head side rotating wheel 327, and a support portion 328 that rotatably supports the main body side rotating wheel 326 and the head side rotating wheel 327. The main body side rotating wheel 326 and the head side rotating wheel 327 are configured by a raceway ring and a plurality of balls that roll inside the raceway ring. The support portion 328 has a ring shape and is open inside. Grooves for supporting a plurality of balls of the main body side rotating wheel 326 and the head side rotating wheel 327 are provided on both surfaces of the support portion 328 so as to be able to roll. The rotating member 325 obtains the function of a ball bearing by configuring the ball side of the main body side rotating wheel 326 and the head side rotating wheel 327 to face the groove of the support portion 328. The rotating member 325 may have a bearing structure other than the ball bearing.

  For example, the rotation member 325 has such a size that the outer periphery of the main body side rotating wheel 326 fits into the concave portion 323 of the main body 10 and the outer periphery of the head side rotating wheel 327 fits into the concave portion 322 of the head 20. In this case, the open part inside the support part 328 becomes a light path. The rotating member 325 may be detachably engaged with the main body 10 and the head 20, but may be joined unless it is particularly necessary to detach. That is, in the rotating member 325 of the modified example, an open portion inside the support portion 328 that is larger than the inner diameter of the convex portion 321 on the main body 10 side becomes a light path.

(Third embodiment)
Next, an interface device according to a third embodiment of the present invention will be described with reference to the drawings.

  FIG. 32 is a front view of the interface device according to the present embodiment. The interface apparatus according to the present embodiment is different from the first embodiment in that a weight 29 is mounted on the head 20. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  The weight 29 is set to such a weight that the projection direction by the head 20 faces the front by the weight of the weight 29 when the main body 10 is tilted. For example, a power source such as a primary battery or a secondary battery may be disposed under the head 20 as the weight 29. In addition, a component provided inside the head 20 may be disposed below the head 20, and the weight of the component may function as the weight 29.

  The head 20 of the interface device according to the present embodiment is rotatably connected to the main body 10 by a rotation mechanism. A weight 29 is installed below the head 20. Therefore, the projection direction of the head 20 does not change depending on the weight of the weight 29 even when the main body 10 is directed in any direction in the vertical direction.

  As described above, according to the interface apparatus according to the present embodiment, since the weight is mounted on the lower part of the head, the projection direction does not change due to changes in the body shape and posture of the operator who wears the interface apparatus.

(Fourth embodiment)
Next, an interface apparatus according to a fourth embodiment of the present invention will be described with reference to the drawings.

  FIG. 33 is a conceptual diagram for explaining the configuration of the interface apparatus according to the present embodiment. FIG. 34 is a conceptual diagram in which the head 20 is removed from the main body 10. The interface device according to the present embodiment is different from the first embodiment in that an automatic rotation mechanism that automatically controls the head 20 is mounted. In the present embodiment, the internal configuration of the main body 10 and the head 20 will also be described. The description of the same configurations and functions as those in the first to third embodiments is omitted.

  As shown in FIG. 33, in this embodiment, the main body 10 and the head 20 are connected by an automatic rotation mechanism 340. As shown in FIG. 34, the automatic rotation mechanism 340 includes a rotation member 341, a motor 342, a recess 343 in the main body 10, and a protrusion 345 in the head 20.

  The rotating member 341 has the same configuration as that of the rotating member 320 of the second embodiment. The rotating member 341 is inserted into the recess 343 of the main body 10. A convex portion 345 of the head 20 is inserted inside the rotating member 341. A part similar to the concave part 343 may be provided on the head 20 side, and a part similar to the convex part 345 may be provided on the main body 10 side.

  As in the first embodiment, the main body 10 includes a light source 11, a phase modulation type modulator 12, and a Fourier transform lens 13. Further, the main body 10 includes a detection unit 14, an image processing unit 15, a control unit 16, and a driving unit 17. The main body 10 is provided with a recess 343 similar to that of the modification of the second embodiment. As shown in FIG. 34, the head 20 is provided with a convex portion 345 in which a gear-like continuous irregularity is formed along the outer periphery at the tip portion.

  FIG. 35 is a conceptual diagram of the automatic rotation mechanism 340 as viewed from the inside of the main body 10. A gear is attached to the tip of the rotating shaft of the motor 342. The gear attached to the tip of the rotating shaft of the motor 342 meshes with the unevenness at the tip of the convex portion 345 of the head 20. When the motor 342 is driven, the rotation mechanism operates to rotate the head 20 with respect to the main body 10.

  That is, one of the main body 10 and the head 20 has a convex portion 345 in which gear-shaped irregularities are formed along the outer periphery of the end portion on the wall portion through which the Fourier-transformed light passes. The other of the main body 10 and the head 20 includes a concave portion 343 into which the convex portion 345 is inserted, and a motor 342 in which a gear meshing with the concave and convex portions of the inserted convex portion 345 is attached to the rotation shaft. The automatic rotation mechanism fits the outer periphery of the rotating member 341 into the concave portion 343, fits the inner periphery of the rotating member 341 into the convex portion 345, the concave and convex at the tip of the convex portion 345, and the gear attached to the motor 342. The structure which mesh | engaged.

  Moreover, you may comprise so that the rotational motion of the gear of the motor 342 may be transmitted via the belt 347 to the unevenness | corrugation formed in the outer periphery of the convex part 345 like FIG. In the structure of FIG. 36, one of the main body 10 and the head 20 has a convex portion 345 on the wall portion through which the Fourier-transformed light passes, and the other has a concave portion 343 into which the convex portion 345 is inserted, and a rotating shaft with a gear or the like. And a motor 342 to which the rotating body is attached. The automatic rotation mechanism fits the outer periphery of the rotating member 341 into the recess 343, fits the inner periphery of the rotating member 341 into the convex portion 345, and the outer periphery of the rotating body attached to the rotating shaft of the motor 342 and the convex portion 345. Are connected by a belt 347.

  The detection means 14 is a means for detecting the inclination with respect to the vertical direction. The detection means 14 detects the inclination of the main body 10 with respect to the vertical direction. The detection unit 14 is realized by, for example, an acceleration sensor or a gyro sensor. The detection unit 14 transmits information regarding the detected inclination to the image processing unit 15 and the control unit 16.

  The detection means 14 may be mounted on the head 20 side as shown in FIG. In that case, the detection means 14 detects the inclination of the head 20 with respect to the vertical direction. What is necessary is just to comprise so that the signal from the detection means 14 may be transmitted to the image processing means 15 and the control means 16 of the main body 10 through the wiring provided in the inside of the automatic rotation mechanism 340. Further, the signal from the detection unit 14 may be configured to be transmitted to the image processing unit 15 and the control unit 16 of the main body 10 through the wiring provided outside without passing through the inside of the automatic rotation mechanism 340.

  The image processing unit 15 performs a process of rotating the image in a desired direction in accordance with the rotation of the head 20 based on the information received from the detection unit 14. The image processing unit 15 adjusts the projection image so as to face an appropriate direction by signal processing for forming an image so that the projection image does not rotate with the rotation of the head 20.

  Based on the information received from the detection unit 14, the control unit 16 drives the motor 342 so that an image is projected from the head 20 in a predetermined direction with respect to gravity or a direction determined by work. 17 is controlled. The control unit 16 controls the image from the head 20 to be projected in an appropriate direction based on a preset program.

  The driving unit 17 drives the motor 342 according to the control of the control unit 16.

  As described above, the interface device according to the present embodiment has a mechanism for mechanically rotating the head in a direction programmed in advance with respect to the vertical direction. Therefore, the problem that the image is projected in an inappropriate direction depending on the body shape and posture of the operator is solved. Further, the interface device according to the present embodiment may have a function of adjusting the angle so that the head 20 is directed in a projection direction programmed in advance. The angle adjustment of the head 20 may be programmed to always control in the same direction with respect to the vertical direction, or may be programmed to automatically switch the angle.

(Fifth embodiment)
Next, an interface apparatus according to a fifth embodiment of the present invention will be described with reference to the drawings.

  FIG. 38 is a conceptual diagram for explaining the configuration of the head 20 of the interface apparatus according to the present embodiment. The configuration of the interface device according to the present embodiment is the same as the configuration of the interface device according to any one of the first to fourth embodiments except for the head 20, and thus detailed description thereof is omitted.

  The head 20 of the interface device according to the present embodiment includes output measuring means 18 that detects light that has passed through the hole 23 of the mirror 22.

  The output measuring means 18 is disposed on the traveling axis of the zero-order light that has passed through the hole 23 inside the mirror 22. The zero-order light that has passed through the mirror 22 enters the output measuring means 18. Note that the output measuring unit 18 may be disposed above or below the mirror 22, and the 0th-order light may be reflected by a mirror other than the mirror 22 and incident on the output measuring unit 18.

  The output measuring unit 18 measures the output of the laser beam. The output measuring means 18 includes, for example, a sensor that receives light and outputs an electrical signal, and an electronic circuit system for output reading. The sensor used for the output measuring means 18 is a photoelectric conversion method that measures an electrical signal proportional to the number of incident photons using a photoelectric detector, or a laser that absorbs laser light into a light absorber and converts it into heat to change the temperature. There is a heat conversion method to measure. An example of a sensor using a photoelectric conversion method is a photodiode that measures an electrical signal proportional to the number of incident photons using a photoelectric detector. Moreover, as a sensor using a heat conversion method, a thermopile or a pyroelectric sensor can be cited as an example. In particular, in a portable interface device, the wavelength range may be narrow, but since high-speed response is required, a photoelectric conversion method using a photodiode is preferable.

  The intensity of the 0th-order light measured by the output measuring unit 18 is transmitted to a control unit (not shown), for example. The control means controls drive means (not shown) for driving the light source 11 so as to keep the intensity of the laser light emitted from the light source 11 constant based on the intensity of the 0th-order light received from the output measuring means 18. . Information about the intensity of the 0th-order light measured by the output measuring unit 18 is transmitted to the main body 10 side through a wiring provided between the main body 10 and the head 20. The control unit and the light source driving unit (not shown) may be installed on the main body 10 side.

  If the output of the laser light output from the light source 11 is set to be constant, the intensity of the 0th-order light measured by the output measuring means 18 should be constant. However, when the light source 11 is activated, it takes time until the output of the laser light reaches a certain level. If the actual output of the laser beam can be monitored, the target output can be stabilized more quickly. Considering that the output of the light source 11 changes with time, it is useful to control the output of the laser light emitted from the light source 11 by measuring the zero-order light with the output measuring means 18.

  As described above, according to the interface apparatus according to the present embodiment, since the output of zero-order light that is not used as projection light is measured, it is not necessary to emit extra laser light for measuring the output. Therefore, according to the present embodiment, it is possible to construct a system that measures laser light with lower power consumption than a general apparatus.

  In the present embodiment, an example of measuring the output of the laser beam has been described. However, energy may be measured instead of the output of the laser beam. As a laser beam measurement method, various methods for measuring a wavelength, a wavefront, a beam profile, polarization, a pulse waveform, and the like can be used.

  The interface devices according to the first to fifth embodiments described above may be configured independently of each other, or may be configured in combination with each other.

  Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2015-026461 for which it applied on February 13, 2015, and takes in those the indications of all here.

DESCRIPTION OF SYMBOLS 1 Interface apparatus 2 Projection means 3 Imaging means 4 Control means 10 Main body 11 Light source 12 Modulator 13 Fourier transform lens 14 Detection means 15 Image processing means 16 Control means 17 Drive means 18 Output measurement means 20 Head 21 Projection lens 22 Mirror 23 Hole 24 Reflective surface 25 Camera lens 26 Camera part 27 Aperture 29 Weight 30, 300 Rotating mechanism 31, 301 Main body side rotating part 32, 302 Head side rotating part 230 Hole 240 Substrate 250 Thin film 271 Aperture 320, 325 Rotating member 340 Automatic rotating mechanism 341 Rotating Member 342 Motor

Claims (23)

A light source that emits laser light;
A main body having the laser beam incident thereon and modulation means for modulating the incident laser beam;
A mirror that is installed on an image forming surface of an image formed by light modulated by the modulation means and reflects the light that forms the image toward an operation region for interface operation;
A head having imaging means for imaging an area including the operation area,
The main body and the head are installed at a position through which light modulated by the modulation means passes, and are connected via a rotating mechanism in which an opening through which the light modulated by the modulation means passes is formed. apparatus. The modulating means includes
A phase modulation type modulator that receives the laser beam and modulates the phase of the incident laser beam;
A light whose phase is modulated by the modulator is incident, and includes a Fourier transform lens that Fourier transforms the incident light,
The mirror is
Installed on the image forming surface of the image formed by the light that has passed through the Fourier transform lens, and reflects the light that forms the image toward the operation region;
2. The main body and the head are installed at a position through which light forming the image passes, and are connected via a rotation mechanism in which an opening through which the light forming the image passes is formed. Interface device. The mirror is
The interface device according to claim 1, wherein the interface device has a prism shape and has a hole through which zero-order light included in light forming the image passes. The mirror is
The interface device according to claim 1, wherein the interface device is a thin film mirror formed on a substrate, and the thin film mirror has a hole through which zero-order light included in the light forming the image passes. The body is
The interface apparatus according to claim 1, further comprising an image processing unit that outputs image data to be displayed on the modulation unit to the modulation unit. The image processing means includes
The interface apparatus according to claim 5, wherein image processing for rotating the image formed on the image forming surface is performed in accordance with rotation of the head with respect to the main body. The head is
The interface device according to claim 1, further comprising a projection lens that projects light reflected by the mirror toward the operation area. The head is
The interface apparatus according to claim 1, further comprising an aperture that has an aperture smaller than an image area formed by light modulated by the modulation unit and blocks a peripheral portion of the image area. The aperture is
The interface device according to claim 8, wherein the interface device is installed between the rotation mechanism and the mirror. The aperture is
The interface device according to claim 8, installed between the mirror and the projection lens. The aperture has a rectangular opening;
The interface device according to claim 8, wherein the image processing unit performs image processing for rotating the image formed on the image forming surface in accordance with rotation of the head.   The interface device according to claim 8, wherein the aperture has a circular opening. One of the main body and the head has a convex portion on the wall portion through which the light modulated by the modulating means passes,
The other of the main body and the head has a concave portion that engages with the convex portion on the wall portion through which the light modulated by the modulation means passes.
The rotation mechanism is
The interface device according to any one of claims 1 to 12, having a configuration in which the convex portion and the concave portion are engaged with each other. One of the main body and the head has a convex part with an outer edge structure formed at the end part on the wall part through which the light modulated by the modulating means passes.
The other of the main body and the head has a concave portion in which an engagement structure that engages with an outer edge structure of the convex portion is formed on a wall portion through which light modulated by the modulation means passes.
The rotation mechanism is
The interface device according to claim 1, wherein an outer edge structure of the convex portion is engaged with an engaging structure of the concave portion. One of the main body and the head has a convex part in which a track structure is formed along the outer periphery of the end part on the wall part through which the light modulated by the modulating unit passes.
The other of the main body and the head has a concave portion in which a raceway facing the raceway structure of the convex portion is formed on a wall portion through which the light modulated by the modulation means passes,
The rotation mechanism is
The interface device according to any one of claims 1 to 12, having a configuration in which the track structure of the convex portion and the race ring of the concave portion are engaged via a plurality of rolling elements. One of the main body and the head has a convex portion on the wall portion through which the light modulated by the modulating means passes,
The other of the main body and the head has a recess in the wall portion through which the light modulated by the modulation means passes,
The rotation mechanism is
The structure according to claim 1 to 12, wherein an outer periphery of a rotating member having an inner ring rotatably engaged with an outer ring is fitted into the concave portion, and an inner circumference of the rotating member is fitted into the convex portion. The interface device according to any one of the above. The main body and the head have a recess in a wall portion through which light modulated by the modulation means passes,
The rotation mechanism is
13. The interface device according to claim 1, wherein both ends of a rotating member that is rotatably engaged at both ends are fitted in the recesses of the main body and the head, respectively.   The interface device according to any one of claims 1 to 17, wherein a weight is disposed below the head. The rotation mechanism is
An automatic rotation mechanism for automatically rotating the head relative to the body;
The body is
Detecting means for detecting the inclination of the main body or the head;
Control means for controlling the operation of the automatic rotation mechanism based on the inclination detected by the detection means;
The interface device according to claim 1, further comprising a driving unit that drives the automatic rotation mechanism in accordance with control of the control unit. The rotation mechanism is
An automatic rotation mechanism for automatically rotating the head relative to the body;
The head is
Having a detecting means for detecting the inclination of the main body or the head;
The body is
Control means for controlling the operation of the automatic rotation mechanism based on the inclination detected by the detection means;
The interface device according to claim 1, further comprising a driving unit that drives the automatic rotation mechanism in accordance with control of the control unit. One of the main body and the head has a convex part in which gear-shaped irregularities are formed along the outer periphery of the end part on the wall part through which the light modulated by the modulating unit passes.
The other of the main body and the head has a concave portion in which the convex portion is inserted, and a motor in which a gear that meshes with the concave and convex portions of the inserted convex portion is attached to a rotation shaft,
The automatic rotation mechanism is
An outer periphery of a rotating member having an inner ring rotatably engaged with an outer ring is fitted into the concave portion, an inner circumference of the rotating member is fitted into the convex portion, the concave and convex portions of the convex portion and the motor The interface device according to claim 19 or 20, wherein the interface device has a configuration in which an attached gear is meshed. One of the main body and the head has a convex portion on the wall portion through which the light modulated by the modulating means passes,
The other of the main body and the head has a concave portion into which the convex portion is inserted, and a motor in which a gear is attached to a rotation shaft,
The automatic rotation mechanism is
The outer periphery of a rotating member having an inner ring that is rotatably engaged with an outer ring is fitted into the concave portion, the inner circumference of the rotating member is fitted into the convex portion, and attached to the rotating shaft of the motor. The interface device according to claim 19 or 20, wherein a gear and an outer periphery of the convex portion are connected by a belt. The head is
The output measuring means for measuring the output of the incident 0th-order light, in which the 0th-order light included in the light modulated by the modulation means is incident after the mirror. The interface device according to item.

Images