TWI608251B - Lighting device - Google Patents

Description

Illuminating device

The present invention relates to a light-emitting device, and more particularly to a light-emitting device configured with a beam splitter group, which increases the number of structured light patterns that can be produced by the light-emitting device.

Structure light refers to light with a specific shape, and with the development of optical technology, it can be designed into line shapes, surface shapes, mesh shapes, and even more complex forms of light, and then It is used in many fields, such as 3D contour reproduction, distance measurement, anti-counterfeiting identification, somatosensory interaction and novel design and application, etc., and the traditional warning signs can be extended to medical or health needs such as pollution-free. Medical environment applications and the like, so the importance of structured light has gradually increased, and related technologies have been extensively studied.

The structured light generating unit emits a structured light, and when the structured light is projected onto the target, the surface of the target exhibits a structured light pattern. The structured light pattern presented on the surface of the target object is an important identification feature used to judge spatial information. However, for the moment, the structured light pattern on the surface of the target object, regardless of line shape, surface morphology, mesh form Wait, the density/quantity is still insufficient, or the corresponding projection The lack of coverage, such as the inability to provide accurate calculations for subsequent spatial information, or the insufficiency of projected content to impose application constraints, etc., are all goals that need to be addressed in this area of technology.

It is a primary object of the present invention to provide a light emitting device comprising a structured light generating unit and a beam splitter assembly. With the beam splitter group, a portion of the structured light is projected through the beam splitter group to a projection surface such that the projection surface presents a first structured light pattern, and another portion of the structured light is split by the split light. After the mirror is reflected, it is re-projected to the projection surface via different paths, so that the projection surface presents a second structured light pattern. Thereby, the first structured light pattern and the second structured light pattern are both presented on the projection surface, so that the number of lines, surfaces, and grids on the projection surface is doubled, so that the space is assisted in subsequent acquisition. With the help of information, it can help to improve the degree of analysis, and the relative projection content can also be more diverse than before.

A preferred implementation concept of the present invention is to provide a light emitting device comprising a structured light generating unit and a beam splitting mirror assembly. The structured light generating unit emits a structure light. The beam splitter group is disposed on the traveling path of the structured light, the beam splitter group includes a half transflective surface and a total reflection surface, and one of the plurality of complex beams of the structured light passes through the semi-transmissive half of the beam splitter group The reflective surface is projected onto a projection surface such that the projection surface presents a first structured lighting pattern, and another portion of the light beams of the structured light is used by the semi-transmission half of the beam splitter group Reflecting surface is reflected to the total reflection surface, and then projected through the total reflection surface To the projection surface, the projection surface presents a second structured light pattern.

In a preferred embodiment, the second structured light pattern is an equal-scale enlargement of the first structured light pattern; or the second structured light pattern is an equal-scale reduction of the first structured light pattern; The second structured light pattern is equal in size to the first structured light pattern, but the second structured light pattern and the first structured light pattern do not all overlap.

In a preferred embodiment, a light incident side of the beam splitter group has a light incident surface and the total reflection surface, and a light emitting side of the light splitting mirror group is coated with the semi-transmissive reflective surface, wherein the structured light When the plurality of light beams are incident on the semi-transmissive semi-reflecting surface, the partial light beam continues to be projected outward to the projection surface to present the first structured light pattern, and the partial light beam passes through the semi-transmissive half After the reflective surface is reflected inwardly to the total reflection surface, the total reflection surface is projected outward through the semi-transmissive reflection surface to the projection surface to present the second structured light pattern; or, an input of the beam splitter group The light side has a light incident surface and the total reflection surface, and a light emitting side of the beam splitter group is coated with the transflective surface and an anti-reflective coating, wherein the complex light beam of the structured light When the light incident surface is incident on the semi-transmissive reflective surface, the partial light beam continues to be projected outward to the projection surface to present the first structured light pattern, and the partial light beam passes through the semi-transmissive semi-reflective surface. After internal reflection to the total reflection surface, The second reflective light pattern is presented by the total reflection surface being projected outward through the anti-reflection surface to the projection surface.

In a preferred embodiment, the coating of the transflective surface and/or the coating of the total reflection surface are not uniform and have different thicknesses.

In a preferred embodiment, the beam splitter group is one of a wedge beam splitter group, a double wedge beam splitter group, and a combined beam splitter group.

In a preferred embodiment, the numerical aperture (NA) of the beam splitter group covers the first structure light pattern and the emission angle and range corresponding to the second structure light pattern.

In a preferred embodiment, the beam splitter lens is formed by injection of a plastic material.

In a preferred embodiment, the spectroscopic lens assembly is formed of a UV curable material on a substrate, wherein the material of the substrate is selected from one of plastic, glass or germanium.

In a preferred embodiment, the beam splitter is formed either directly or indirectly in multiple steps.

In a preferred embodiment, the beam splitter is formed directly or indirectly in a plurality of steps.

In a preferred embodiment, the beam splitter has an asymmetrical, non-spherical surface.

In a preferred embodiment, the beam splitter is a prism or a prism-like shape.

In a preferred embodiment, the illuminating device further includes a driving mechanism coupled to the beam splitter group, and the driving mechanism can be manually, mechanically driven, electrically driven, magnetically driven, electromagnetically driven, or the combination of the above drives. drive.

In a preferred embodiment, the structured light generating unit includes a light emitting a source and an optical element group, and the optical element group includes a diffractive optical element (DOE), a refractive optical element, and a reflection corresponding to the first structured light pattern and the second structured light pattern One of the optical components.

In a preferred embodiment, the structured light generating unit further includes a collimating lens disposed between the light source and the optical component group for collimating the light beam output by the light source and transmitting the light beam to the light source. The optical component group.

In a preferred embodiment, the illumination source includes at least one of a laser diode (LD), a light emitting diode (LED), and an organic light emitting diode (OLED).

In a preferred embodiment, the illumination source can be arranged in a plurality of interleaved interleaves, and can be programmed to start lighting or weakening or even power-off to change in time.

In a preferred embodiment, the illuminating device further includes at least one conversion lens module disposed between the structured light generating unit and a projection surface, and the plurality of beams of the structured light sequentially pass through the beam splitter group and the conversion The lens module is then projected onto a projection surface such that the projection surface presents a structured light pattern; wherein the conversion lens module is controlled to adjust the movement of the light beams of the structured light passing through the conversion lens module The direction of the first structured light pattern and/or the second structured light pattern presented on the projection surface is reduced or enlarged.

A preferred implementation concept of the present invention is to provide a light emitting device comprising a structured light generating unit and a beam splitting mirror assembly. The structured light generating unit is along a The optical axis emits a structure light. The beam splitter group has the optical axis, and a portion of the plurality of beams of the structured light is projected along the optical axis to a projection surface through the beam splitter beam, so that the projection surface presents a first structured light pattern, and Another portion of the light beams of the structured light is projected to the projection surface through the beam splitter group along a light path different from the optical axis, such that the projection surface presents a second structured light pattern.

In a preferred embodiment, the beam splitter group further includes a half transflective surface and a total reflection surface, the transflective surface is located on the optical axis, and the total reflection surface is located on the optical path.

In a preferred embodiment, the second structured light pattern is an equal magnification of the first structured light pattern; or the second structured light pattern is a proportional reduction of the first structured light pattern; or The second structured light pattern is equal in size to the first structured light pattern, but the second structured light pattern and the first structured light pattern do not all overlap.

In a preferred embodiment, a light incident side of the beam splitter group has a light incident surface and the total reflection surface, and a light emitting side of the beam splitter group is coated with the semi-transmissive semi-reflective surface, wherein the structure When the plurality of beams of light pass through the incident surface to the semi-transmissive semi-reflecting surface, the partial beam continues to be projected outward to the projection surface to present the first structured light pattern, and the partial beam passes through the semi-transmission After the semi-reflective surface is reflected inwardly to the total reflection surface, the total reflection surface is projected outward to the projection surface to present the second structured light pattern; or, a light incident side of the beam splitter group has an incoming light And a total reflection surface, a light-emitting side of the beam splitter group is coated with the transflective surface and an anti-reflective coating, wherein the light is complex When the plurality of light beams are incident on the semi-transmissive and semi-reflective surface, the partial light beam continues to be projected outward to the projection surface to present the first structured light pattern, and the partial light beam passes through the semi-transmissive and semi-reflective After the surface is reflected inward to the total reflection surface, the total reflection surface is projected outward through the anti-reflection surface to the projection surface to present the second structured light pattern.

In a preferred embodiment, the beam splitter group is one of a wedge beam splitter group, a double wedge beam splitter group, and a combined beam splitter group.

In a preferred embodiment, the numerical aperture (NA) of the beam splitter group covers the first structure light pattern and the emission angle and range corresponding to the second structure light pattern.

In a preferred embodiment, the beam splitter lens is formed by injection of a plastic material.

In a preferred embodiment, the spectroscopic lens assembly is formed of a UV curable material on a substrate, wherein the material of the substrate is selected from one of plastic, glass or germanium.

In a preferred embodiment, the beam splitter assembly is formed directly or indirectly in multiple steps.

In a preferred embodiment, the beam splitter assembly is formed directly or indirectly in a plurality of steps.

In a preferred embodiment, the beam splitter has an asymmetrical, non-spherical surface.

In a preferred embodiment, the lighting device further includes a driving machine The driving mechanism is coupled to the beam splitter group, and the driving mechanism can be driven by hand drive, mechanical drive, electric drive, magnetic drive, electromagnetic drive or the combination of the above.

In a preferred embodiment, the structured light generating unit includes a light source and an optical component group, and the optical component group includes one of the first structured light pattern and the second structured light pattern. (Diffractive Optical Element, DOE), one of a refractive optical element and a reflective optical element.

In a preferred embodiment, the structured light generating unit further includes a collimating lens disposed between the light source and the optical component group for collimating the light beam output by the light source and transmitting the light beam to the light source. The optical component group.

In a preferred embodiment, the illuminating source comprises at least one of a laser diode (LD), a light emitting diode (LED), and an organic light emitting diode (OLED) or a thermal source. One.

In a preferred embodiment, the illumination source may be staggered in a plurality of staggered configurations, and programmable to initiate lighting or weakening or even power-off changes in time. The plurality of illumination sources can also each have different polarization characteristics or have different band distribution and intensity options.

In a preferred embodiment, the illuminating device further includes at least one conversion lens module disposed between the structured light generating unit and a projection surface, and the plurality of beams of the structured light sequentially pass through the beam splitter group and the Converting the lens module and projecting to a projection surface, so that the projection surface presents a structured light pattern; wherein the conversion is transparent The mirror module is controlled to adjust a direction of travel of the light beams passing through the structured light of the conversion lens module, such that the first structured light pattern and/or the second structured light presented on the projection surface The pattern is reduced or enlarged.

A‧‧‧Lighting device

B‧‧‧Lighting device

C‧‧‧Lighting device

D‧‧‧Lighting device

E‧‧‧Lighting device

X‧‧‧ optical axis

1‧‧‧structured light generating unit

11‧‧‧Light source

12‧‧‧ Collimating lens

13‧‧‧Optical component group

2‧‧‧ beamsplitter group

21‧‧‧Into the glossy surface

22‧‧‧ total reflection surface

23‧‧‧Semi-transmissive semi-reflective surface

3‧‧‧Splitter group

31‧‧‧Into the glossy surface

32‧‧‧ total reflection surface

33‧‧‧Transflective surface

34‧‧‧Anti-reflective surface

4‧‧‧Splitter group

41‧‧‧Into the glossy surface

42‧‧‧ total reflection surface

43‧‧‧Transflective surface

5‧‧‧Splitter group

51‧‧‧Transflective sheet

52‧‧‧ total reflection film

6‧‧‧Conversion lens module

7‧‧‧Splitter group

71‧‧‧Transflective sheet

72‧‧‧ total reflection film

73‧‧‧Anti-reflection film

8‧‧‧Conversion lens module

9‧‧‧projection surface

9a‧‧‧First structured light pattern

9b‧‧‧Second structured light pattern

9c‧‧‧First structured light pattern

9d‧‧‧Second structured light pattern

9e‧‧‧First structured light pattern

9f‧‧‧Second structured light pattern

9g‧‧‧First structured light pattern

9h‧‧‧Second structured light pattern

9i‧‧‧First structured light pattern

9j‧‧‧Second structured light pattern

FIG. 1 is a conceptual diagram of a light-emitting device according to a first embodiment of the present invention when light is emitted.

FIG. 2 is a conceptual diagram of a light-emitting device according to a second embodiment of the present invention when light is emitted.

FIG. 3 is a conceptual diagram of a light-emitting device according to a third embodiment of the present invention when light is emitted.

FIG. 4 is a conceptual diagram of a light-emitting device according to a fourth embodiment of the present invention when light is emitted.

FIG. 5 is a conceptual diagram of a light-emitting device according to a fifth embodiment of the present invention when light is emitted.

Please refer to FIG. 1. FIG. 1 is a conceptual diagram of a light-emitting device according to a first embodiment of the present invention when performing illuminating illumination.

The light-emitting device A of the first embodiment of the present invention includes a structured light generating unit 1 for emitting a structure light, and a beam splitter group 2, wherein the beam splitter group 2 is disposed on the structured light. On the road, that is, at the knot The light-generating unit 1 and a projection surface 9 (generally the surface of a target object) are arranged to separate the structured light from the branch line to increase the number of structured light patterns presented on the projection surface 9. Briefly, a portion of the structured light is projected through the beam splitter group 2 onto the projection surface 9 such that a first structured light pattern 9a is present on the projection surface 9, and another portion of the structured light is split by the beam splitter group 2. After being reflected, it is re-projected to the projection surface 9 via different paths, so that a second structured light pattern 9b is presented on the projection surface 9, thereby increasing the number of lines, surfaces and grids on the projection surface 9 of the embodiment by a double. . As for the detailed structure of the illuminating device A of the present invention, it is as follows.

In the light-emitting device A of the first embodiment of the present invention, the beam splitting mirror group 2 has an optical axis X, and the structured light generating unit 1 emits structured light along the optical axis X, and a light-input side of the beam splitting mirror group 2 (ie, the beam splitting mirror group 2) The side adjacent to the structured light generating unit 1 includes a light incident surface 21 and a total reflection surface 22, and a light exiting side of the spectroscopic lens group 2 (ie, a side of the spectroscopic lens group 2 away from the structured light generating unit 1) includes half Transmissive semi-reflecting surface 23. The semi-transmissive semi-reflecting surface 23 itself acts to allow a part of the light to pass through and the other part of the light to be reflected. In the present application, a part of the plurality of beams of the structured light emitted by the structured light generating unit 1 is along the light. The axis X direction passes through the light incident surface 21 and the semi-transmissive semi-reflecting surface 23 of the spectroscope group 2, and is directly projected onto the projection surface 9, so that the projection surface 9 presents a structured lighting pattern 9a. The other part of the light beams of the structured light is reflected by the semi-transmissive semi-reflecting surface 23 of the spectroscopic group 2 in a direction different from the optical axis X to the total reflection surface 22, and is projected through the total reflection surface 22 to Projection surface 9. Thus, by opening another light path for the beams of the other part of the structured light to travel, the total number of structured light patterns on the projection surface 9 can be increased; in other words, The number of lines, faces, and grids on the face 9 can be doubled compared to conventional illuminators.

In the preferred embodiment, the surface of the light incident side is not parallel to the surface of the light exiting side and intersects with an angle, so that the shape of the beam splitter group 2 is wedge-shaped from a specific side angle.

The first structured light pattern 9a and the second structured light pattern 9b are all originated from the same structured light generating unit 1, and thus the first structured light pattern 9a is shaped like the second structured light pattern 9b. However, since the light path of the second structured light pattern 9b at the time of formation is different from that of the first structured light pattern 9a, the first structured light pattern 9a and the second structured light pattern 9b may have a shape size and/or position. s difference.

In other words, the presentation of the first structured light pattern 9a and the second structured light pattern 9b may be that the second structured light pattern 9b is scaled up by the first structured light pattern 9a, or the second structured light pattern 9b is The first structured light pattern 9a is scaled down, or the second structured light pattern 9b is equal in size to the first structured light pattern 9a, but in the image forming position, the second structured light pattern 9b is offset from the first structured light. The pattern 9a, that is, the two do not all overlap, is also possible. In this embodiment, the first structured light pattern 9a is exemplified by a broken line, and the second structured light pattern 9b is another dotted line adjacent to each other, but this is only for convenience of description, and is illuminated. In the practical application of the device A, the first structured light pattern 9a and the second structured light pattern 9b will be much more complicated.

The beam splitter group 2 is preferably a prism or quasi-prism or prism-like shape or has an asymmetrical non-spherical surface. The arrangement of the spectroscope group 2 can be formed by injection of a plastic material, or directly formed by an ultraviolet curing material or indirectly in multiple steps, or directly formed by a heat curing material or indirectly in multiple steps, or It is formed by a UV-curable material on a substrate (not shown), and the material of the substrate may be selected from one of plastic, glass or enamel, etc., and is possible. In addition, the arrangement of the transflective surface 23 and the total reflection surface 22 can be formed by coating, the coating can be uniform, uneven, and the coating unevenness can be formed into different thicknesses. Furthermore, the numerical aperture (NA) of the beam splitter group 2 covers the emission angle and range corresponding to the first structured light pattern 9a and the second structured light pattern 9b, so that the light leakage can be effectively reduced substantially.

Of course, in order to make the control easier and more diversified, the illumination device A of the present invention further includes a driving mechanism (not shown), and the user can be coupled to the beam splitter group 2 through a driving mechanism, wherein the driving mechanism can be driven by hand or mechanically. Driven by an electric drive, a magnetic drive, an electromagnetic drive or a combination of the above. Moreover, the beam splitter group 2 is detachably disposed in the light-emitting device A of the present invention, and the purpose of this is to take the beam splitter group 2 away if only the light-emitting device A is required to perform general illumination without the light splitting function. Just go.

The receiver further describes the detailed configuration of the structured light generating unit 1 itself. The structured light generating unit 1 includes an illumination source 11 and an optical element group 13, and the optical element group 13 includes a Diffractive Optical Element (DOE) corresponding to the first structured light pattern 9a and the second structured light pattern 9b. One of a refractive optical element and a reflective optical element. And the illumination source 11 provides a plurality of lights The beams are transmitted through the optical element group 13 to form structured light. In the preferred embodiment, the illumination source 11 can be arranged in a plurality of interleaved staggered arrays. The illumination source 11 can have different polarization characteristics or have different band distribution and intensity options and can be programmed to light up or weaken or even close. (power-off) changes in time, and the plurality of beams provided by the illumination source 11 form structured light after passing through the diffractive optical element, but not limited thereto, and may also be modified to be a plurality of colors provided by the illumination source 11. The beam is structured light after passing through the refractive optical element and the reflective optical element. As for the possible form of the illumination source 11, there is included at least one of a laser diode (LD), a light emitting diode (LED), and an organic light emitting diode (OLED) or a thermal source.

In addition, the structured light generating unit 1 further includes a collimating lens 12 disposed between the light source 11 and the optical component group 13 for collimating the light beam output from the light source 11 and transmitting the light beam to the optical component. Group 13.

Please refer to FIG. 2. FIG. 2 is a conceptual diagram of a light-emitting device according to a second embodiment of the present invention when performing illuminating illumination.

The illuminating device B of the second embodiment of the present invention is similar to the first embodiment. The illuminating device B of the second embodiment also includes a structured light generating unit 1 and a spectroscopic group 3 structured light generating unit 1 for emitting a structured light (structure The light splitting lens group 3 is disposed on the traveling path of the structured light, that is, between the structured light generating unit 1 and a projection surface 9 (generally the surface of a target object), and is used to structure light. Split the branch line. As for the light incident side of the beam splitter group 3, a light incident surface 31 and a total reflection surface 32 are also provided. The second embodiment is different from the first embodiment in that the beam splitter of the second embodiment The group 3 is slightly different from the beam splitter group 2 of the first embodiment. A light-emitting side of the beam splitter group 3 of the second embodiment is coated with a transflective surface 33 and an anti-reflective coating 34, wherein a plurality of beams of the structured light are incident on the incident surface. When the semi-transmissive surface 33 is transmissive, a portion of the light beam continues to be projected outward to the projection surface 9 to present the first structured light pattern 9c, and the other portion of the light beam is reflected internally by the semi-transmissive semi-reflective surface 33 to the total reflection surface 32. Thereafter, the total reflection surface 32 is projected to the projection surface 9 through the anti-reflection surface 34, and the second structured light pattern 9d is presented.

In the second embodiment, the beam splitter group 3 is thereby provided with an anti-reflection surface 34 at an appropriate position, whereby the other partial light beam reflected by the total reflection surface 32 is projected as far as possible to the projection surface 9 without It will be reflected further inward to improve the imaging brightness and quality of the second structured light pattern 9d.

Please refer to FIG. 3. FIG. 3 is a conceptual diagram of a light-emitting device according to a third embodiment of the present invention when performing illuminating illumination. The third embodiment of the present invention is similar to the first embodiment. The third embodiment differs from the first embodiment in that the illuminating device C of the third embodiment also includes the structured light generating unit 1 and the beam splitter group 4, but The beam splitter group 4 of the third embodiment is slightly different from the beam splitters 2, 3 of the first and second embodiments. The structured light generating unit 1 emits a structured light, and the beam splitting mirror group 4 is disposed on the traveling path of the structured light for separating the structured light from the branch line. A light incident side of the beam splitter group 4 has a light incident surface 41 and two total reflection surfaces 42. The shape of the beam splitter group 4 is changed from a specific side angle of the first embodiment to a double wedge shape, and the structure light passes through. The path of any wedge of the double-wedge beam splitter group 4 is similar to the path of the structure light passing through the single wedge of the foregoing two embodiments, so that the description will not be repeated here, and then the first structure is projected on the projection surface 9. The light pattern 9e and the second structure light pattern 9f. However, by changing the structure of the beam splitting mirror itself, more third structured light patterns and fourth structured light patterns can be projected, and the number of projections of the structured light patterns is not limited thereto.

In addition, a light-emitting side of the beam splitting mirror group 4 of the third embodiment may be disposed to be coated with only the semi-transmissive semi-reflecting surface 43 or the light-emitting side while being coated with the semi-transmissive reflecting surface 43 and an anti-reflecting surface ( The figure is not shown, it is a possible configuration. Since the detailed possible structure has been stated in the first two embodiments, it will not be repeated here.

Please refer to FIG. 4. FIG. 4 is a conceptual diagram of a light-emitting device according to a fourth embodiment of the present invention when performing illuminating illumination. The light-emitting device D of the fourth embodiment of the present invention also includes the structured light generating unit 1 and the beam splitting mirror group 5, but the beam splitting mirror group 5 of the fourth embodiment is slightly different from the beam splitting mirror group of the first three embodiments. The structured light generating unit 1 emits a structured light, and the beam splitter group 5 is disposed on the traveling path of the structured light for separating the structured light from the branch line. In the fourth embodiment, the beam splitter group 5 is a combined beam splitter group which is composed of a plurality of lenses of different functions. The basic combination of the combined beam splitter includes a half transflective sheet 51 and a total reflection sheet 52. When the plurality of beams of the structured light pass through the semi-transmissive reflecting surface 51, the portion of the beam continues to be projected outward to the projection surface 9, The first structured light pattern 9g is present, and the partial light beam is reflected by the semi-transmissive semi-reflecting surface 51 to the total reflection surface 52, and then reflected by the total reflection surface 52 and projected outward to the projection surface 9, and presents a second Structure light pattern 9h. Moreover, similarly to the first three embodiments, the first structured light pattern 9g is different in shape and/or position from the second structured light pattern 9h, so that the recognizable lines are increased.

In addition, the illuminating device D in this embodiment further includes two conversions. The mirror module 6 is disposed on the light-emitting side of the transflective sheet 51 and the total reflection sheet 52, respectively. In detail, the structured light generating unit 1 is configured to output structured light, and the conversion lens module 6 is located between the beam splitter group 5 and the projection surface 9 for the complex beam ordering of the structured light output by the structured light generating unit 1. After passing through the beam splitter group and the conversion lens module 6, the first structured light pattern 9g and the second structured light pattern 9h presented on the projection surface 9 can be reduced or enlarged by the displacement of the conversion lens module 6 as an illumination. Adjustment of perspective. Although the conversion lens module 6 shown in FIG. 4 is only shown as a single component, it is not limited thereto. The conversion lens module 6 can be composed of a plurality of lenses according to actual application requirements.

Please refer to FIG. 5. FIG. 5 is a conceptual diagram of a light-emitting device according to a fifth embodiment of the present invention when performing illuminating illumination. The light-emitting device E of the fifth embodiment of the present invention also includes the structured light generating unit 1 and the beam splitting mirror group 7, but the beam splitting mirror group 5 of the fourth embodiment is slightly different from the beam splitting mirror group of the first four embodiments. The structured light generating unit 1 emits a structured light, and the beam splitter group 7 is disposed on the traveling path of the structured light for separating the structured light from the branch line. In the fifth embodiment, the beam splitter group 7 is a combined beam splitter group which is composed of a plurality of lenses of different functions. The light-emitting device of the fifth embodiment is different from the fourth embodiment in that the combined beam splitter group includes at least one anti-reflection sheet 73 in addition to the semi-transmissive semi-reflective sheet 71 and the at least one total reflection sheet 72.

In the present embodiment, the combined beam splitter group includes a half transflective sheet 71, a triple total reflection sheet 72, and two anti-reflection sheets 73. The two anti-reflection sheet 73 is disposed at a light entrance portion and a light exit portion of the beam splitter group 7 to thereby make the line pass as positive as possible. It is true that the light on the path is no longer reflected. Furthermore, the transflective sheet 71 is disposed on the path through which the structured light travels, so that a portion of the structured light is projected through the transflective surface 71 to a projection surface 9 to present a first projection surface 9. The structured light pattern 9i, and the other portion of the structured light is reflected by the semi-transmissive semi-reflecting surface 71 of the beam splitter group 7 to one of the three total reflection sheets 72, and then projected outward toward the projection surface 9 for projection A second structured light pattern 9j different from the first structured light pattern 9i is presented on the face 9. As for the above-mentioned semi-transmissive semi-reflective sheet 71, one of the total reflection sheet 72 and the gap between the two anti-reflection sheets 73, the other two of the total reflection sheets are filled up to avoid light leakage to achieve optimum light. Use performance. Of course, the number here is an example for convenience of explanation, and is not limited.

In summary, the illuminating device of the present invention is particularly provided with a beam splitter group, and the beam splitting mirror group can branch the original structured light, so that the structured light pattern on the projection surface is increased, that is, the line and surface on the projection surface are increased. The number of grids is increased by a multiple, or the range of projections is changed, etc., so as to provide a precise calculation when subsequently obtaining spatial information, thereby improving the degree of resolution.

The above-described embodiments are merely illustrative of the principles and effects of the present invention, and the technical features of the present invention are not to be construed as limiting the scope of the present invention. Any person skilled in the art can make changes or equal arrangements that can be easily accomplished without departing from the technical spirit and spirit of the invention. Therefore, the scope of protection of the present invention should be as set forth in the appended claims.

A‧‧‧Lighting device

X‧‧‧ optical axis

1‧‧‧structured light generating unit

11‧‧‧Light source

12‧‧‧ Collimating lens

13‧‧‧Optical component group

2‧‧‧ beamsplitter group

21‧‧‧Into the glossy surface

22‧‧‧ total reflection surface

23‧‧‧Semi-transmissive semi-reflective surface

9‧‧‧projection surface

9a‧‧‧First structured light pattern

9b‧‧‧Second structured light pattern

Claims (33)

A light-emitting device comprising: a structured light generating unit comprising an illumination source and an optical component group, the structured light generating unit emitting a structure light; and a beam splitter set disposed on the structured light row a path through, the beam splitter group includes a half transflective surface and a total reflection surface, and a portion of the plurality of complex beams of the structured light is projected through a semi-transmissive semi-reflecting surface of the beam splitter to a projection surface, such that a first structured light pattern is projected on the projection surface, and another portion of the light beams of the structured light is reflected by the semi-transmissive reflective surface of the beam splitter group to the total reflection surface, and then The total reflection surface is projected onto the projection surface such that the projection surface presents a second structured light pattern; wherein the optical component group includes a diffraction corresponding to the first structured light pattern and the second structured light pattern One of a Diffractive Optical Element (DOE), a refractive optical element, and a reflective optical element. The illuminating device of claim 1, wherein the second structured light pattern is an equal magnification of the first structured light pattern; or the second structured light pattern is the first structured light pattern Or proportionally reducing; or the second structured light pattern is equal in size to the first structured light pattern, but the second structured light pattern and the first structured light pattern do not all overlap. The illuminating device of claim 1, wherein a light incident side of the beam splitter group has a light incident surface and the total reflection surface, and a light exiting side of the beam splitter group is coated. The semi-transmissive semi-reflecting surface, wherein when the plurality of beams of the structured light are incident on the semi-transmissive semi-reflecting surface, the partial beam continues to be projected outward to the projection surface to present the first structured light a pattern, and the portion of the light beam is reflected by the semi-transmissive semi-reflective surface to the total reflection surface, and then projected by the total reflection surface through the semi-transmissive semi-reflection surface to the projection surface to present the second Or a light-incident surface of the beam splitter group has a light-incident surface and a total-reflection surface, and a light-emitting side of the beam splitter group is coated with the transflective surface and an anti-reflection surface (Anti a reflective coating, wherein when the plurality of beams of the structured light are incident on the semi-transmissive semi-reflecting surface, the partial beam continues to be projected outward to the projection surface to present the first structured light pattern, and The portion of the light beam is reflected by the semi-transmissive and semi-reflective surface to the total reflection surface, and then projected by the total reflection surface through the anti-reflection surface to the projection surface to present the second structured light pattern. The light-emitting device according to claim 3, wherein the coating of the transflective surface and/or the coating of the total reflection surface are uneven and have different thicknesses. The illuminating device of claim 1, wherein the beam splitter group is one of a wedge beam splitter group, a double wedge beam splitter group, and a combined beam splitter group. The illuminating device of claim 1, wherein a numerical aperture (NA) of the beam splitter group covers an emission angle and a range corresponding to the first structured light pattern and the second structured light pattern. The illuminating device of claim 1, wherein the beam splitting mirror is formed by injection of a plastic material. The illuminating device of claim 1, wherein the spectroscopy group is formed of a UV curable material on a substrate, wherein the material of the substrate is selected from one of plastic, glass or enamel. The illuminating device of claim 1, wherein the spectroscopy group is formed by directly forming an ultraviolet curing material or indirectly in multiple steps. The illuminating device of claim 1, wherein the spectroscopy group is formed directly or indirectly in a plurality of steps. The illuminating device of claim 1, wherein the beam splitter group has an asymmetrical non-spherical surface. The illuminating device of claim 1, wherein the spectroscopy group is a prism or a prism-like shape. The illuminating device of claim 1, further comprising a driving mechanism coupled to the beam splitter group, and the driving mechanism can be freely driven, mechanically driven, electrically driven, magnetically driven, electromagnetically driven or Driven by the drive combination. The illuminating device of claim 1, wherein the structured light generating unit further comprises a collimating lens disposed between the illuminating source and the optical component group for collimating the output of the illuminating source The light beam is transmitted to the optical component group. The illuminating device of claim 14, wherein the illuminating source comprises a laser diode (LD), a light emitting diode (LED), and an organic light emitting diode (OLED) or a heat source ( At least one of thermal source). The illuminating device of claim 15, wherein the illuminating source is staggered or has a plurality of staggered or different polarization characteristics or different wavelengths and intensities, and can be programmed to light up or weaken or even turn off (power) -off) Changes in time. The illuminating device of claim 1, further comprising at least one conversion lens module disposed between the structured light generating unit and a projection surface, and the plurality of beam beams of the structured light sequentially pass through the beam splitter group And converting the lens module to a projection surface, so that the projection surface presents a structured light pattern; wherein the conversion lens module is controlled to change the light of the structure passing through the conversion lens module The direction of travel of the light beam causes the first structured light pattern and/or the second structured light pattern presented on the projected surface to be reduced or enlarged. A light emitting device comprising: A structured light generating unit includes a light emitting source and an optical element group, the structured light generating unit emitting a structure light along an optical axis; and a beam splitting mirror having the optical axis, the structured light A portion of the plurality of beams is projected along the optical axis to a projection surface through the beam splitter, such that a first structured light pattern is present on the projection surface, and another portion of the light beams of the structured light are different A light path of the optical axis is projected to the projection surface through the beam splitter group, so that the projection surface presents a second structured light pattern; wherein the optical component group includes a light pattern corresponding to the first structure and the first One of a diffractive optical element (DOE), a refractive optical element, and a reflective optical element. The illuminating device of claim 18, wherein the beam splitter group further comprises a transflective surface and a total reflection surface, the transflective surface is located on the optical axis, and the total reflection surface is located On the light path. The illuminating device of claim 19, wherein the second structured light pattern is an equal magnification of the first structured light pattern; or the second structured light pattern is the first structured light pattern or the like The ratio is reduced; or the second structured light pattern is equal in size to the first structured light pattern, but the second structured light pattern and the first structured light pattern do not all overlap. The illuminating device of claim 19, wherein a light incident side of the beam splitter group has a light incident surface and the total reflection surface, and a light emitting side of the beam splitter group is coated with the transflective a surface in which the plurality of beams of the structured light pass through the When the light surface is incident on the semi-transmissive semi-reflecting surface, the partial light beam continues to be projected outward to the projection surface to present the first structured light pattern, and the partial light beam is reflected inward through the semi-transmissive semi-reflecting surface After the total reflection surface is projected onto the projection surface by the total reflection surface, the second structured light pattern is presented; or a light incident side of the beam splitter group has a light incident surface and the total reflection surface. The light-emitting side of the beam splitter group is coated with the transflective surface and an anti-reflective coating, wherein a plurality of beams of the structured light are incident on the transflective surface through the incident surface And the partial light beam continues to be projected outward to the projection surface to present the first structured light pattern, and the other partial light beam is reflected inward through the semi-transmissive semi-reflective surface to the total reflection surface, and then the whole The reflective surface is projected outward through the anti-reflection surface to the projection surface to present the second structured light pattern. The illuminating device of claim 19, wherein the spectroscopy group is one of a wedge beam splitter group, a double wedge beam splitter group, and a combined beam splitter group. The illuminating device of claim 18, wherein a numerical aperture (NA) of the beam splitter group covers a divergence range corresponding to the first structured light pattern and the second structured light pattern. The illuminating device of claim 18, wherein the beam splitting mirror is formed by injection of a plastic material. The illuminating device of claim 18, wherein the spectroscopy group is formed of a UV curable material on a substrate, wherein the material of the substrate is selected from one of plastic, glass or enamel. The illuminating device of claim 18, wherein the spectroscopy group is formed directly or indirectly in a plurality of steps. The illuminating device of claim 18, wherein the spectroscopy group is formed directly or indirectly in a plurality of steps. The illuminating device of claim 18, wherein the beam splitter group has an asymmetrical non-spherical surface. The illuminating device of claim 18, further comprising a driving mechanism coupled to the beam splitter group, and the driving mechanism can be driven by hand, mechanically, electrically, magnetically driven, electromagnetically driven or Driven by the above drive combination. The illuminating device of claim 18, wherein the structured light generating unit further comprises a collimating lens disposed between the illuminating source and the optical component group for collimating the output of the illuminating source The light beam is transmitted to the optical component group. The illuminating device of claim 30, wherein the illuminating source comprises a laser diode (LD), a light emitting diode (LED), and an organic light emitting diode (OLED) or a heat source ( At least one of thermal source). The illuminating device of claim 31, wherein the illuminating source is distributed in a plurality of staggered staggered manners, and can be programmed to start lighting or weakening or even power-off to change in time. The illuminating device of claim 18, further comprising at least one conversion lens module disposed between the structured light generating unit and a projection surface, and the plurality of beam beams of the structured light sequentially pass through the beam splitter group And converting the lens module to a projection surface, so that the projection surface presents a structured light pattern; wherein the conversion lens module is controlled to change the light of the structure passing through the conversion lens module The direction of travel of the light beam causes the first structured light pattern and/or the second structured light pattern presented on the projected surface to be reduced or enlarged.