TW201715200A - Optical device - Google Patents
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Abstract
Description
本發明係關於一種光學裝置，尤其關於一種用以提供結構光(structure light)之光學裝置。 This invention relates to an optical device, and more particularly to an optical device for providing structure light.
隨著電子工業的演進以及工業技術的蓬勃發展，各種電子設備大都朝著輕便、易於攜帶的方向進行開發與設計，以利使用者隨時隨地應用於行動商務或娛樂休閒等用途。而又由於近年來機、光、電的整合與應用受到重視的程度日益增加，因此各式各樣的光學裝置(如影像擷取裝置、發光裝置等)正廣泛地延伸至各種產品上，如智慧型手機、穿戴式電子裝置等體積小且方便攜帶的可攜式電子設備，故使用者得以於有需求時隨時取出並進行使用，不僅具有重要的商業價值，更讓一般大眾的日常生活增添色彩。 With the evolution of the electronics industry and the rapid development of industrial technology, various electronic devices are mostly developed and designed in a light and portable manner, so that users can apply to mobile commerce or entertainment for anytime and anywhere. However, due to the increasing importance of the integration and application of machine, light and electricity in recent years, various optical devices (such as image capturing devices, illuminating devices, etc.) are widely extended to various products, such as Small portable and portable electronic devices such as smart phones and wearable electronic devices, so users can take them out and use them whenever they need them, which not only has important commercial value, but also increases the daily life of the general public. color.
再者，隨著生活品質的提升，人們希望電子設備具有更多元化的功能，也因此對於應用在電子設備上的光學裝置產生更多的訴求；而為了因應此些訴求，現已有一些相關於結構光 (structure light)的技術被提出；例如本案申請人在申請號為104115679的台灣專利申請中揭露了利用光學裝置輸出結構光對受測表面進行偵測，以獲得受測表面的距離與平坦度，又例如本案申請人也在申請號為104115677的台灣專利申請中揭露了利用光學裝置輸出雙結構光對受測標的進行偵測以獲得準確的深度資訊。 Furthermore, with the improvement of the quality of life, people hope that electronic devices have more diversified functions, and therefore more appeals to optical devices applied to electronic devices; and in response to these demands, there are now some Related to structured light (Structure light) technology is proposed; for example, in the Taiwan patent application No. 104115679, the applicant discloses the use of an optical device to output structured light to detect the surface to be tested to obtain the distance and flatness of the surface to be tested. For example, the applicant of the present application also discloses the use of an optical device to output dual-structured light to detect the subject to obtain accurate depth information in the Taiwan Patent Application No. 104115677.
然而，為了因應日益增加的需求，電子設備上就必須隨著增加分別輸出不同結構光的多個光學裝置，以相應地提供各種功能，但此將導致電子設備的體積無法有效朝向輕、薄、短小的趨勢發展，故如何於不擴大電子設備之體積的前提下使電子設備所能提供的功能更加多元化，已儼然成為一個重要的課題。 However, in order to cope with the increasing demand, electronic devices must increase the number of optical devices that respectively output different structured lights to provide various functions accordingly, but this will result in the volume of the electronic device being unable to effectively face light, thin, and The trend is short, so how to make the functions provided by electronic devices more diversified without expanding the size of electronic devices has become an important issue.
本發明之一目的在提供一種光學裝置，特別是一種可同時產生輸出多個相同形式或不同形式之結構光(structure lighting)的光學裝置，而由於本發明以單一光學裝置就能產生輸出多個相同形式或不同形式的結構光，因此應用本發明光學裝置的電子設備可於僅設置單一光學裝置的情況下提供多種不同的功能，並有助於電子設備朝向輕、薄、短小的趨勢發展。此外，本發明光學裝置還可透過提高多個結構光的的相干性(coherent)而使分別相對應於該些結構光之多個結構光圖案的交疊處呈現複數干涉條紋(interference fringe)，藉以應用於提升空間性(spatial)識別的解析度及/或時間性(temporal)識別的解析度。 An object of the present invention is to provide an optical device, and more particularly to an optical device capable of simultaneously outputting a plurality of structural lightings of the same form or different forms, and the present invention can produce a plurality of outputs by a single optical device. The same form or different forms of structured light, and thus the electronic device to which the optical device of the present invention is applied can provide a variety of different functions in the case where only a single optical device is provided, and contributes to the trend toward the light, thin, and short electronic devices. In addition, the optical device of the present invention can also present a plurality of interference fringes at the intersection of the plurality of structured light patterns respectively corresponding to the structured lights by increasing the coherent of the plurality of structured lights. It is used to improve the resolution of spatial recognition and/or the resolution of temporal recognition.
於一較佳實施例中，本發明提供一種光學裝置，包括：一發光模組，用以提供一來源光束；一第一結構光(structure light)產生模組；一第二結構光產生模組；以及一分光單元，設置於該發光模組、該第一結構光產生模組以及該第二結構光產生模組之間，且用以於該來源光束入射至該分光單元時將該來源光束分為朝該第一結構光產生模組之方向行進的一第一光束以及朝該第二結構光產生模組之方向行進的一第二光束；其中，該第一光束係於通過該第一結構光產生模組後形成一第一結構光，而該第二光束係於通過該第二結構光產生模組後形成一第二結構光。 In a preferred embodiment, the present invention provides an optical device comprising: a light emitting module for providing a source beam; a first structured light generating module; and a second structured light generating module And a light splitting unit disposed between the light emitting module, the first structured light generating module, and the second structured light generating module, and configured to source the light beam when the source light beam is incident on the light splitting unit Dividing into a first light beam traveling in a direction of the first structured light generating module and a second light beam traveling in a direction of the second structured light generating module; wherein the first light beam is passed through the first The structured light generating module forms a first structured light, and the second light beam is formed to form a second structured light after passing through the second structured light generating module.
於一較佳實施例中，該發光模組包括一發光源，且該發光源包括一雷射二極體(LD)、一發光二極體(LED)以及一有機發光二極體(OLED)中之至少一者。 In a preferred embodiment, the light emitting module includes a light source, and the light source includes a laser diode (LD), a light emitting diode (LED), and an organic light emitting diode (OLED). At least one of them.
於一較佳實施例中，該發光模組更包括一準直單元(collimating unit)，其係設置於該發光源以及該分光單元之間，用以準直該準直單元所接收之光束並予以傳送至該分光單元。 In a preferred embodiment, the light emitting module further includes a collimating unit disposed between the light source and the light splitting unit for collimating the light beam received by the collimating unit and It is transmitted to the spectroscopic unit.
於一較佳實施例中，該發光模組更包括一光束擴張單元(beam expansion unit)，其係設置於該發光源以及該準直單元之間，用以擴張所接收之光束並予以傳送至該準直單元。 In a preferred embodiment, the illuminating module further includes a beam expansion unit disposed between the illuminating source and the collimating unit for expanding the received beam and transmitting the beam to the beam The collimation unit.
於一較佳實施例中，該來源光束包括具有一第一波長區間之光束、具有一第二波長區間之光束以及具有一熱感應波 長區間之光束中之至少一者。 In a preferred embodiment, the source beam includes a light beam having a first wavelength interval, a light beam having a second wavelength interval, and having a thermally induced wave. At least one of the long-range beams.
於一較佳實施例中，該分光單元係為一多邊形塊狀分光元件，且該多邊形塊狀元件至少具有一第一表面以及一第二表面；其中，該第一表面以及該第二表面之間形成有一稜線，且該多邊形塊狀元件係以該稜線面對該來源光束之入射方向的方式設置，以供該來源光束中之一部分者入射至該第一表面並產生反射而形成該第一光束，並供該來源光束中之一另一部分者入射至該第二表面並產生反射而形成該第二光束。 In a preferred embodiment, the beam splitting unit is a polygonal block-shaped beam splitting element, and the polygonal block element has at least a first surface and a second surface; wherein the first surface and the second surface Forming a ridge line, and the polygonal block element is disposed in such a manner that the ridge line faces the incident direction of the source beam, so that one of the source beams is incident on the first surface and generates a reflection to form the first And forming a second beam by a beam of light and for causing another portion of the source beam to be incident on the second surface.
於一較佳實施例中，該多邊形塊狀元件係呈一多邊形椎狀體或一多邊形柱狀體。 In a preferred embodiment, the polygonal block element is a polygonal cone or a polygonal column.
於一較佳實施例中，該分光單元具有一非球面(aspheric)表面，且該非球面表面具有一頂部；其中，該分光單元係以該頂部面對該來源光束之入射方向的方式設置，以供該來源光束入射至該非球面表面並產生反射，以形成該第一光束以及該第二光束。 In a preferred embodiment, the beam splitting unit has an aspheric surface, and the aspheric surface has a top portion; wherein the light splitting unit is disposed in such a manner that the top portion faces the incident direction of the source beam, The source beam is incident on the aspherical surface and produces a reflection to form the first beam and the second beam.
於一較佳實施例中，該第一結構光產生模組包括一第一結構光輸出單元，且該第一結構光輸出單元係由一第一繞射光學元件(diffractive optical element,DOE)、一第一折射式光學元件以及一第一反射式光學元件中之至少一者所組成。 In a preferred embodiment, the first structured light generating module includes a first structured light output unit, and the first structured light output unit is composed of a first diffractive optical element (DOE), At least one of a first refractive optical element and a first reflective optical element.
於一較佳實施例中，該第一結構光產生模組更包括一第一準直單元(collimating unit)，其係設置於該第一結構光輸出單元以及該分光單元之間，用以準直來自該分光單元之該第一光束並予以傳送至該第一結構光輸出單元。 In a preferred embodiment, the first structured light generating module further includes a first collimating unit disposed between the first structured light output unit and the splitting unit. The first light beam from the splitting unit is transmitted to the first structured light output unit.
於一較佳實施例中，該第二結構光產生模組包括一 第二結構光輸出單元，且該第二結構光輸出單元係由一第二繞射光學元件(diffractive optical element,DOE)、一第二折射式光學元件以及一第二反射式光學元件中之至少一者所組成。 In a preferred embodiment, the second structured light generating module includes a a second structured light output unit, wherein the second structured light output unit is composed of at least a second diffractive optical element (DOE), a second refractive optical element, and a second reflective optical element One is composed.
於一較佳實施例中，該第二結構光產生模組更包括一第二準直單元(collimating unit)，其係設置於該第二結構光輸出單元以及該分光單元之間，用以準直來自該分光單元之該第二光束並予以傳送至該第二結構光輸出單元。 In a preferred embodiment, the second structured light generating module further includes a second collimating unit disposed between the second structured light output unit and the splitting unit. The second light beam from the splitting unit is transmitted to the second structured light output unit.
於一較佳實施例中，光學裝置更包括一殼體，其用以容置該發光模組以及該分光單元，並具有一第一輸出埠以及一第二輸出埠；其中，該第一結構光產生模組以及該第二結構光產生模組係分別設置於該第一輸出埠以及該第二輸出埠。 In a preferred embodiment, the optical device further includes a housing for accommodating the light emitting module and the light splitting unit, and has a first output port and a second output port; wherein the first structure The light generating module and the second structured light generating module are respectively disposed on the first output port and the second output port.
於一較佳實施例中，該第一結構光產生模組以及該第二結構光產生模組中之至少一者係呈一薄膜狀。 In a preferred embodiment, at least one of the first structured light generating module and the second structured light generating module is in the form of a film.
於一較佳實施例中，當該第一結構光投射至一投射面時，該投射面上呈現一第一結構光圖案，且該第一結構光圖案包括一點(point)圖形組、一條紋(stripe)圖形組以及一網格(grid)圖形組中之至少一者。 In a preferred embodiment, when the first structured light is projected onto a projection surface, the projection surface presents a first structured light pattern, and the first structured light pattern includes a point pattern group and a stripe. (stripe) at least one of a graphics group and a grid graphics group.
於一較佳實施例中，當該第二結構光投射至一投射面時，該投射面上呈現一第二結構光圖案，且該第二結構光圖案包括一點(point)圖形組、一條紋(stripe)圖形組以及一網格(grid)圖形組中之至少一者。 In a preferred embodiment, when the second structured light is projected onto a projection surface, the projection surface presents a second structured light pattern, and the second structured light pattern includes a point pattern group and a stripe. (stripe) at least one of a graphics group and a grid graphics group.
於一較佳實施例中，該分光單元更用以於該來源光束入射至該分光單元時供該來源光束中之一部份者穿過其中以形成一第三光束並向外輸出。 In a preferred embodiment, the beam splitting unit is further configured to allow a portion of the source beam to pass therethrough when the source beam is incident on the beam splitting unit to form a third beam and output outward.
於一較佳實施例中，該第一結構光以及該第二結構光係彼此同調相干(coherent)且投射至一投射面，用以使該投射面上呈現至少一干涉條紋(interference fringe)。 In a preferred embodiment, the first structured light and the second structured light are coherent with each other and projected onto a projection surface for causing at least one interference fringe on the projection surface.
於一較佳實施例中，該發光模組包括一發光源，且該第一結構光圖案以及該第二結構光圖案係於一同調長度L(coherence length)內交疊，以使該投射面上呈現該至少一干涉條紋，而該同調長度L滿足下列關係式：
於一較佳實施例中，該第一結構光以及該第二結構光係依據一預定時間序列而彼此間歇性同調相干，以使該投射面間歇性呈現該至少一干涉條紋。 In a preferred embodiment, the first structured light and the second structured light are intermittently coherent with each other according to a predetermined time series such that the projected surface intermittently presents the at least one interference fringe.
於一較佳實施例中，該至少一干涉條紋係供一空間性(spatial)識別及/或一時間性(temporal)識別。 In a preferred embodiment, the at least one interference fringe is for a spatial identification and/or a temporal identification.
1A‧‧‧光學裝置 1A‧‧‧Optical device
1B‧‧‧光學裝置 1B‧‧‧Optical device
1C‧‧‧光學裝置 1C‧‧‧Optical device
1D‧‧‧光學裝置 1D‧‧‧Optical device
1E‧‧‧光學裝置 1E‧‧‧Optical device
1F‧‧‧光學裝置 1F‧‧‧Optical device
1G‧‧‧光學裝置 1G‧‧‧Optical device
1H‧‧‧光學裝置 1H‧‧‧Optical device
11‧‧‧殼體 11‧‧‧Shell
12A‧‧‧發光模組 12A‧‧‧Lighting Module
12E‧‧‧發光模組 12E‧‧‧Lighting Module
12F‧‧‧發光模組 12F‧‧‧Lighting Module
13A‧‧‧第一結構光產生模組 13A‧‧‧First structured light generation module
13G‧‧‧第一結構光產生模組 13G‧‧‧First structured light generation module
14A‧‧‧第二結構光產生模組 14A‧‧‧Second structured light generation module
14G‧‧‧第二結構光產生模組 14G‧‧‧Second structured light generation module
15‧‧‧分光單元 15‧‧‧Distribution unit
15A‧‧‧分光單元 15A‧‧ ‧ Splitting unit
15B‧‧‧分光單元 15B‧‧ ‧ Splitting unit
15C‧‧‧分光單元 15C‧‧ ‧ Splitting unit
15D‧‧‧分光單元 15D‧‧ ‧ Splitting unit
16‧‧‧第一導光單元 16‧‧‧First light guide unit
17‧‧‧第二導光單元 17‧‧‧Second light guiding unit
81*‧‧‧第一結構光圖案 81*‧‧‧First structured light pattern
81**‧‧‧第一結構光圖案 81**‧‧‧First structured light pattern
82**‧‧‧第二結構光圖案 82**‧‧‧Second structured light pattern
82*‧‧‧第二結構光圖案 82*‧‧‧Second structured light pattern
83‧‧‧干涉條紋 83‧‧‧ interference fringes
91‧‧‧第一投射面 91‧‧‧First projection surface
92‧‧‧第二投射面 92‧‧‧second projection surface
93‧‧‧投射面 93‧‧‧projection surface
111‧‧‧第一輸出埠 111‧‧‧First output埠
112‧‧‧第二輸出埠 112‧‧‧Second output埠
121‧‧‧發光源 121‧‧‧Light source
122‧‧‧準直單元 122‧‧‧ Collimation unit
123‧‧‧光束擴張單元 123‧‧‧beam expansion unit
131‧‧‧第一結構光輸出單元 131‧‧‧First structured light output unit
132‧‧‧第一準直單元 132‧‧‧First Collimation Unit
141‧‧‧第二結構光輸出單元 141‧‧‧Second structured light output unit
142‧‧‧第二準直單元 142‧‧‧Second collimation unit
151‧‧‧第一表面 151‧‧‧ first surface
151*‧‧‧第一表面 151*‧‧‧ first surface
152‧‧‧第二表面 152‧‧‧ second surface
152*‧‧‧第二表面 152*‧‧‧second surface
153‧‧‧第三表面 153‧‧‧ third surface
156‧‧‧非球面表面 156‧‧‧ aspherical surface
157‧‧‧非球面表面的頂部 157‧‧‧Top of the aspherical surface
158‧‧‧五邊形錐狀體的頂部 158‧‧‧Top of the pentagon cone
159‧‧‧稜線 159‧‧‧ ridgeline
L‧‧‧來源光束 L‧‧‧ source beam
L’‧‧‧第一部份來源光束 L’‧‧‧The first part of the source beam
L”‧‧‧第二部份來源光束 L”‧‧‧Second part source beam
L1‧‧‧第一光束 L1‧‧‧first beam
L1’‧‧‧光束 L1’‧‧‧ Beam
L11‧‧‧第一光束 L11‧‧‧First beam
L12‧‧‧第一光束 L12‧‧‧First beam
L1*‧‧‧第一結構光 L1*‧‧‧First structured light
L2‧‧‧第二光束 L2‧‧‧second beam
L2’‧‧‧光束 L2’‧‧‧ Beam
L21‧‧‧第二光束 L21‧‧‧second beam
L22‧‧‧第二光束 L22‧‧‧second beam
L2*‧‧‧第二結構光 L2*‧‧‧Second structured light
圖1：係為本發明光學裝置於一第一較佳實施例之運作示意圖。 Figure 1 is a schematic view showing the operation of the optical device of the present invention in a first preferred embodiment.
圖2：係為圖1所示光學裝置之部份結構的配置概念示意圖。 Fig. 2 is a schematic view showing the configuration of a part of the structure of the optical device shown in Fig. 1.
圖3A：係為呈帶狀(stripe-like)之結構光圖案的一較 佳概念示意圖。 Figure 3A: A comparison of a stripe-like structured light pattern Good concept diagram.
圖3B：係為呈渦流環狀(vortex ring)之結構光圖案的一較佳概念示意圖。 Fig. 3B is a schematic diagram showing a preferred embodiment of a structured light pattern in the form of a vortex ring.
圖3C：係為呈網格狀之結構光圖案的一較佳概念示意圖。 Fig. 3C is a schematic diagram showing a preferred concept of a structured light pattern in the form of a grid.
圖3D：係為呈多條平行條紋排列狀之結構光圖案的一較佳概念示意圖。 FIG. 3D is a schematic diagram showing a preferred concept of a structured light pattern arranged in a plurality of parallel stripes.
圖3E：係為多個點圖形排列成矩形狀之結構光圖案的一較佳概念示意圖。 FIG. 3E is a schematic diagram showing a preferred concept of a structured light pattern in which a plurality of dot patterns are arranged in a rectangular shape.
圖3F：係為呈矩形面狀之結構光圖案的一較佳概念示意圖。 FIG. 3F is a schematic diagram showing a preferred concept of a structured light pattern in a rectangular shape.
圖4：係為本發明光學裝置於一第二較佳實施例之部份結構的配置概念示意圖。 Figure 4 is a schematic view showing the configuration of a portion of the optical device of the present invention in a second preferred embodiment.
圖5：係為本發明光學裝置於一第三較佳實施例之分光單元的結構概念示意圖。 FIG. 5 is a schematic view showing the structure of a light splitting unit of a third preferred embodiment of the optical device of the present invention.
圖6：係為本發明光學裝置本發明光學裝置於一第四較佳實施例之運作示意圖。 Figure 6 is a schematic view showing the operation of the optical device of the present invention in a fourth preferred embodiment of the optical device of the present invention.
圖7：係為圖6所示光學裝置之分光單元的結構概念示意圖。 Fig. 7 is a schematic view showing the structure of a light splitting unit of the optical device shown in Fig. 6.
圖8：係為本發明光學裝置於一第五較佳實施例之部份結構的配置概念示意圖。 Figure 8 is a schematic view showing the configuration of a portion of the structure of the optical device of the present invention in a fifth preferred embodiment.
圖9：係為本發明光學裝置於一第六較佳實施例之部份結構的配置概念示意圖。 Figure 9 is a schematic view showing the configuration of a portion of the structure of the optical device of the present invention in a sixth preferred embodiment.
圖10：係為本發明光學裝置於一第七較佳實施例之 部份結構的配置概念示意圖。 Figure 10 is a seventh preferred embodiment of the optical device of the present invention Schematic diagram of the configuration concept of some structures.
圖11：係為本發明光學裝置於一第八較佳實施例之部份結構的配置概念示意圖。 Figure 11 is a schematic view showing the configuration of a portion of the structure of the optical device of the present invention in an eighth preferred embodiment.
圖12：係為呈現在圖11所示投射面上之第一結構光圖案、第二結構光圖案以及複數干涉條紋的概念示意圖。 Figure 12 is a conceptual diagram showing the first structured light pattern, the second structured light pattern, and the complex interference fringes presented on the projection surface shown in Figure 11.
請參閱圖1與圖2，圖1為本發明光學裝置於一第一較佳實施例之運作示意圖，圖2為圖1所示光學裝置之部份結構的配置概念示意圖。光學裝置1A包括殼體11、發光模組12A、第一結構光L1*(structure light)產生模組13A、第二結構光產生模組14A以及分光單元15A，且殼體11用以容置發光模組12A以及分光單元15A，並具有分別供第一結構光產生模組13A以及第二結構光產生模組14A設置於其上的第一輸出埠111以及第二輸出埠112；其中，分光單元15A設置於發光模組12A、第一結構光產生模組13A以及第二結構光產生模組14A之間，用以於發光模組12A所提供之來源光束L入射至分光單元15A時將來源光束L分為朝第一結構光產生模組13A之方向行進的第一光束L1以及朝第二結構光產生模組14A之方向行進的第二光束L2，且來源光束L、第一光束L1以及第二光束L2中之任一者皆可呈一單光束(single beam)形式或一複數光束(multiple beams)形式。 1 and FIG. 2, FIG. 1 is a schematic view showing the operation of an optical device according to a first preferred embodiment of the present invention, and FIG. 2 is a schematic view showing the configuration of a portion of the optical device of FIG. The optical device 1A includes a housing 11, a light emitting module 12A, a first structured light L1* (structure light) generating module 13A, a second structured light generating module 14A, and a light splitting unit 15A, and the housing 11 is configured to receive light. The module 12A and the beam splitting unit 15A have a first output port 111 and a second output port 112 respectively disposed on the first structured light generating module 13A and the second structured light generating module 14A; wherein, the splitting unit 15A is disposed between the light emitting module 12A, the first structured light generating module 13A, and the second structured light generating module 14A, and is used to source the light beam when the source light beam L provided by the light emitting module 12A is incident on the light splitting unit 15A. L is divided into a first light beam L1 traveling in the direction of the first structured light generating module 13A and a second light beam L2 traveling in the direction of the second structured light generating module 14A, and the source light beam L, the first light beam L1, and the Either of the two beams L2 may be in the form of a single beam or a multiple beams.
再者，發光模組12A包括發光源121，且發光源121可由雷射二極體(LD)、發光二極體(LED)、有機發光二極體(OLED) 以及類似於雷射二極體、發光二極體、有機發光二極體等半導體類的其它發光元件中的至少一者所組成；其中，發光源121所提供的來源光束L中可包括具有第一波長區間的光束及/或具有第二波長區間的光束。舉例來說，發光源121所提供的光束可包括可見光束、不可見光束(如紫外光束、紅外光束、近紅外光束或遠紅外光束等)以及具有熱感應波長區間的光束。 Furthermore, the light-emitting module 12A includes a light-emitting source 121, and the light-emitting source 121 can be made up of a laser diode (LD), a light-emitting diode (LED), and an organic light-emitting diode (OLED). And at least one of the other light-emitting elements of a semiconductor such as a laser diode, a light-emitting diode, or an organic light-emitting diode; wherein the source light beam L provided by the light source 121 may include A light beam of one wavelength interval and/or a light beam having a second wavelength interval. For example, the light beam provided by the illumination source 121 can include a visible beam, an invisible beam (such as an ultraviolet beam, an infrared beam, a near-infrared beam, or a far-infrared beam, etc.) and a beam having a thermally induced wavelength interval.
於本較佳實施例中，分光單元15A係為一三邊形柱狀體(三角柱)，並具有第一表面151、第二表面152以及第三表面153，且第一表面151以及第二表面152之間形成有一稜線159；其中，第一表面151以及第二表面152皆為具有高反射特性的表面，例如塗佈有高反射膜(high reflection coating)，且分光單元15A是以其稜線159面對來源光束L之入射方向的方式設置，因此來源光束L中會有第一部份來源光束L’以及第二部份來源光束L”分別入射至第一表面151以及第二表面152，且入射至第一表面151的第一部份來源光束L’會於第一表面151上產生反射並形成第一光束L1，而入射至第二表面152的第二部份來源光束L”會於第二表面152上產生反射並形成第二光束L2。 In the preferred embodiment, the beam splitting unit 15A is a triangular columnar body (triangular column) and has a first surface 151, a second surface 152, and a third surface 153, and the first surface 151 and the second surface. A ridge 159 is formed between the 152; wherein the first surface 151 and the second surface 152 are both surfaces having high reflection characteristics, for example, coated with a high reflection coating, and the light splitting unit 15A is ridge 159 thereof. Facing the incident direction of the source beam L, the first partial source beam L' and the second partial source beam L" are incident on the first surface 151 and the second surface 152, respectively, in the source beam L, and The first partial source light beam L' incident on the first surface 151 will reflect on the first surface 151 and form the first light beam L1, and the second partial source light beam L" incident on the second surface 152 will be in the first A reflection occurs on the two surfaces 152 and a second light beam L2 is formed.
又，第一結構光產生模組13A包括第一結構光輸出單元131，且第一結構光輸出單元131係為一第一繞射光學元件(diffractive optical element,DOE)，其供第一光束L1通過其中而形成向外輸出的第一結構光L1*，而於第一結構光L1*投射至第一投射面91時，第一投射面91上會呈現第一結構光圖案81*；同樣地，第二結構光產生模組14A包括第二結構光輸出單元141，且第二結構光輸出單元141係為一第二繞射光學元件，其供第二光束L2 通過其中而形成向外輸出的第二結構光L2*，而於第二結構光L2*投射至第二投射面92時，第二投射面92上會呈現第二結構光圖案82*。較佳者，但不以此為限，第一繞射光學元件以及第二繞射光學元件可分別被設計呈薄膜狀，藉以微小化光學裝置1A的體積。 Moreover, the first structured light generating module 13A includes a first structured light output unit 131, and the first structured light output unit 131 is a first diffractive optical element (DOE) for the first light beam L1. The first structured light L1* outputted outward is formed therein, and when the first structured light L1* is projected onto the first projected surface 91, the first structured light pattern 81* is presented on the first projected surface 91; The second structured light generating module 14A includes a second structured light output unit 141, and the second structured light output unit 141 is a second diffractive optical element for the second light beam L2. The second structured light L2* outputted outward is formed therein, and when the second structured light L2* is projected onto the second projected surface 92, the second structured light pattern 82* is present on the second projected surface 92. Preferably, but not limited thereto, the first diffractive optical element and the second diffractive optical element may each be designed in a film shape to miniaturize the volume of the optical device 1A.
再者，第一繞射光學元件以及第二繞射光學元件皆係依據實際應用需求而被設計，用以分別對通過其中的第一光束L1以及第二光束L2進行光束整形(beam shaping)，進而使向外輸出的第一結構光L1*以及第二結構光L2*得以彈性變化，因此分別呈現在第一投射面91以及第二投射面92上的第一結構光圖案81*以及第二結構光圖案82*是可被設計，且第一結構光圖案81*以及第二結構光圖案82*可被設計成相同或不同。 Furthermore, the first diffractive optical element and the second diffractive optical element are designed according to actual application requirements for beam shaping of the first light beam L1 and the second light beam L2 passing therethrough, respectively. Further, the first structured light L1* and the second structured light L2* which are outputted outward are elastically changed, so that the first structured light pattern 81* and the second which are respectively formed on the first projection surface 91 and the second projection surface 92 are respectively present. The structured light pattern 82* can be designed, and the first structured light pattern 81* and the second structured light pattern 82* can be designed to be the same or different.
惟，圖1所示第一結構光圖案81*以及第二結構光圖案82*係僅為實施例，並不以圖1所示為限；舉例來說，第一結構光圖案或第二結構光圖案可包括一點(point)圖形組、一條紋(stripe)圖形組以及一網格(grid)圖形組中的至少一者。以下再以圖3A~圖3F舉例說明結構光圖案的6種實施態樣，但實際應用上並不以此為限。圖3A示意了帶狀(stripe-like)的結構光圖案，圖3B示意了渦流環狀(vortex ring)的結構光圖案，圖3C示意了網格狀的結構光圖案，圖3D示意了多條平行條紋排列狀的結構光圖案，圖3E示意了多個點圖形排列成矩形狀的結構光圖案，圖3F示意了矩形面狀的結構光圖案。 However, the first structured light pattern 81* and the second structured light pattern 82* shown in FIG. 1 are merely embodiments, and are not limited to those shown in FIG. 1; for example, the first structured light pattern or the second structure The light pattern may include at least one of a point pattern group, a stripe pattern group, and a grid pattern group. In the following, the six embodiments of the structured light pattern are illustrated by using FIG. 3A to FIG. 3F, but the practical application is not limited thereto. Figure 3A illustrates a stripe-like structured light pattern, Figure 3B illustrates a vortex ring structured light pattern, Figure 3C illustrates a grid-like structured light pattern, and Figure 3D illustrates a plurality of A structured light pattern in which parallel stripes are arranged, FIG. 3E illustrates a structured light pattern in which a plurality of dot patterns are arranged in a rectangular shape, and FIG. 3F illustrates a structured light pattern in a rectangular shape.
此外，如何透過設計第一繞射光學元件以及第二繞射光學元件而使得分別通過其中並輸出的第一結構光L1*以及第 二結構光L2*符合使用者的需求，係為熟知本技藝人士所知悉，故在此即不再予以贅述。 In addition, how to design the first diffractive optical element and the second diffractive optical element to pass the first structured light L1* and the The two structured light L2* is in accordance with the needs of the user and is well known to those skilled in the art and will not be further described herein.
當然，上述僅為實施例，產生第一結構光L1*以及第二結構光L2*的方式並不以上述為限，舉例來說，亦可變更設計第一結構光輸出單元131是由第一折射式光學元件(圖未示)以及第一反射式光學元件(圖未示)中的至少一者所組成，以供通過其中的第一光束L1形成第一結構光L1*，同樣地，亦可變更設計第二結構光輸出單元141是由第二折射式光學元件(圖未示)以及第二反射式光學元件(圖未示)中的至少一者所組成，以供通過其中的第二光束L2形成第二結構光L2*。 Of course, the above is only an embodiment, and the manner of generating the first structured light L1* and the second structured light L2* is not limited to the above. For example, the first structured light output unit 131 may be changed by design. At least one of a refractive optical element (not shown) and a first reflective optical element (not shown) is formed for forming the first structured light L1* through the first light beam L1 therein, and likewise The second structure light output unit 141 is composed of at least one of a second refractive optical element (not shown) and a second reflective optical element (not shown) for passing the second The light beam L2 forms the second structured light L2*.
請參閱圖4，其為本發明光學裝置於一第二較佳實施例之部份結構的配置概念示意圖。其中，本較佳實施例之光學裝置1B大致類似於前述第一較佳實施例中所述者，在此即不再予以贅述。而本較佳實施例與前述第一較佳實施例的不同處在於，分光單元15B的第一表面151*以及第二表面152*具有特定的穿透率，例如塗佈有特定穿透率的薄膜，且該特定穿透率的數值係依據實際應用需求而設定，因此入射至第一表面151*的來源光束L’會有一部份在第一表面151*上產生反射並形成第一光束L1，而另一部份(L1’)則會穿過第一表面151*且往第三表面153的方向行進，同樣地，入射至第二表面152*的來源光束L”會有一部份在第二表面152*上產生反射並形成第二光束L2，而另一部份(L2’)則穿過第二表面152*且往第三表面153的方向行進；其中，於本較佳實施例中，殼體(圖未示，可參考圖1)還具有第三輸出埠(圖未示)，用以供穿過分光單元15A之第三表面153的光束L1’、L2’通過而 向外輸出。可選擇地，第三輸出埠處還可供設置一第三結構光產生模組(圖未示)，藉以使通過其中的來源光束L1’、L2’形成第三結構光。 Please refer to FIG. 4, which is a schematic diagram showing the configuration concept of a part of the structure of the optical device according to the second preferred embodiment of the present invention. The optical device 1B of the preferred embodiment is substantially similar to that described in the foregoing first preferred embodiment, and will not be further described herein. The difference between the preferred embodiment and the foregoing first preferred embodiment is that the first surface 151* and the second surface 152* of the beam splitting unit 15B have a specific transmittance, for example, coated with a specific transmittance. a film, and the value of the specific transmittance is set according to actual application requirements, so that a part of the source beam L' incident on the first surface 151* is reflected on the first surface 151* and forms a first beam L1. And the other portion (L1') will pass through the first surface 151* and proceed toward the third surface 153. Similarly, the source beam L" incident on the second surface 152* will have a portion The second surface 152* produces a reflection and forms a second light beam L2, and the other portion (L2') passes through the second surface 152* and proceeds toward the third surface 153; wherein, in the preferred embodiment The housing (not shown, see FIG. 1) further has a third output port (not shown) for passing the light beams L1', L2' passing through the third surface 153 of the beam splitting unit 15A. Output to the outside. Optionally, a third structured light generating module (not shown) is further disposed at the third output port, so that the source light beams L1', L2' passing therethrough form the third structured light.
請參閱圖5，其為本發明光學裝置於一第三較佳實施例之分光單元的結構概念示意圖。其中，本較佳實施例之光學裝置大致類似於前述各較佳實施例中所述者，在此即不再予以贅述。而本較佳實施例與前述各較佳實施例的不同處在於，分光單元15C為一五邊形錐狀體(五角椎)，並具有第一表面151、第二表面152、第三表面153、第四表面154以及第五表面155，且分光單元15C是以五邊形錐狀體的頂部158(第一表面~第五表面151~155之交接處所形成的頂點)面對來源光束L之入射方向的方式設置，因此來源光束L中會有第一部份來源光束L’、第二部份來源光束L”、第三部份來源光束(圖未示)、第四部份來源光束(圖未示)以及第五部份來源光束(圖未示)分別入射至第一表面151、第二表面152、第三表面153、第四表面以及第五表面，並進而分別於第一表面151、第二表面152、第三表面153、第四表面以及第五表面上產生反射而形成第一光束L1、第二光束L2、第三光束(圖未示)、第四光束(圖未示)以及第五光束(圖未示)。 Please refer to FIG. 5 , which is a schematic structural diagram of a light splitting unit of a third preferred embodiment of the optical device of the present invention. The optical device of the preferred embodiment is substantially similar to that described in the foregoing preferred embodiments and will not be further described herein. The difference between the preferred embodiment and the foregoing preferred embodiments is that the beam splitting unit 15C is a pentagonal cone (pentagon) and has a first surface 151, a second surface 152, and a third surface 153. The fourth surface 154 and the fifth surface 155, and the light splitting unit 15C faces the source beam L with the top 158 of the pentagonal pyramid (the apex formed by the intersection of the first surface to the fifth surface 151-155) The direction of incidence is set, so that the source beam L has a first portion of the source beam L', a second portion of the source beam L", a third portion of the source beam (not shown), and a fourth portion of the source beam ( The fifth source light beam (not shown) is incident on the first surface 151, the second surface 152, the third surface 153, the fourth surface, and the fifth surface, respectively, and is further respectively on the first surface 151. The second surface 152, the third surface 153, the fourth surface, and the fifth surface are reflective to form a first light beam L1, a second light beam L2, a third light beam (not shown), and a fourth light beam (not shown). And a fifth beam (not shown).
其中，於本較佳實施例中，殼體(圖未示，可參考圖1)還具有對應於分光單元15C之第三表面153且供第三結構光產生模組(圖未示，但同理於圖2所示之第一結構光產生模組13A與第二結構光產生模組14A)設置於其上的第三輸出埠(圖未示)、對應於分光單元15C之第四表面154且供第四結構光產生模組(圖未示，但同理於圖2所示之第一結構光產生模組13A與第二結構光 產生模組14A)設置於其上的第四輸出埠(圖未示)以及對應於分光單元15C之第五表面155且供第五結構光產生模組(圖未示，但同理於圖2所示之第一結構光產生模組13A與第二結構光產生模組14A)設置於其上的第五輸出埠(圖未示)，因此本較佳實施例的光學裝置可朝不同(五個)方向向外輸出多個(五個)結構光(圖未示)。 In the preferred embodiment, the housing (not shown, see FIG. 1) further has a third surface 153 corresponding to the beam splitting unit 15C and a third structured light generating module (not shown, but the same A third output port (not shown) disposed on the first structured light generating module 13A and the second structured light generating module 14A) shown in FIG. 2 corresponds to the fourth surface 154 of the beam splitting unit 15C. And for the fourth structured light generating module (not shown, but the same as the first structured light generating module 13A and the second structured light shown in FIG. 2 a fourth output 埠 (not shown) disposed on the module 14A) and a fifth surface 155 corresponding to the beam splitting unit 15C and configured for the fifth structured light generating module (not shown, but similar to FIG. 2) The first structured light generating module 13A and the second structured light generating module 14A) are disposed on the fifth output port (not shown), so that the optical device of the preferred embodiment can be different (5) ()) Output multiple (five) structured lights outward (not shown).
當然，上述皆僅為實施例，分光單元15A、15B、15C的形狀與結構並不以上述為限，分光單元可依據實際應用需求而被設計成任一多邊形塊狀元件，如多邊形椎狀體或多邊形柱狀體等。 Of course, the above is only an embodiment, and the shape and structure of the beam splitting units 15A, 15B, and 15C are not limited to the above, and the beam splitting unit can be designed as any polygonal block element, such as a polygonal vertebra according to actual application requirements. Or a polygonal column or the like.
請參閱圖6與圖7，圖6為本發明光學裝置本發明光學裝置於一第四較佳實施例之運作示意圖，圖7為圖6所示光學裝置之分光單元的結構概念示意圖。其中，本較佳實施例之光學裝置1D大致類似於前述各較佳實施例中所述者，在此即不再予以贅述。而本較佳實施例與前述各較佳實施例的不同處在於，分光單元15D具有一非球面(aspheric)表面156，分光單元15D是以非球面表面156的頂部157面對來源光束L之入射方向的方式設置，以供來源光束L’、L”入射至非球面表面156並產生反射，以形成第一光束L1以及第二光束L2，進而於向外輸出第一結構光L1*以及第二結構光L2*後分別在第一投射面91上以及第二投射面92上呈現第一結構光圖案81*以及第二結構光圖案82*。 Please refer to FIG. 6 and FIG. 7. FIG. 6 is a schematic diagram showing the operation of the optical device of the present invention in a fourth preferred embodiment of the present invention, and FIG. 7 is a schematic structural view of the optical splitting unit of the optical device shown in FIG. The optical device 1D of the preferred embodiment is substantially similar to that described in the foregoing preferred embodiments, and will not be further described herein. The difference between the preferred embodiment and the foregoing preferred embodiments is that the beam splitting unit 15D has an aspheric surface 156, and the beam splitting unit 15D is incident on the source beam L at the top 157 of the aspherical surface 156. The direction is set such that the source beam L', L" is incident on the aspherical surface 156 and is reflected to form the first beam L1 and the second beam L2, thereby outputting the first structured light L1* and the second outward. The first structured light pattern 81* and the second structured light pattern 82* are present on the first projection surface 91 and the second projection surface 92, respectively, after the structured light L2*.
請參閱圖8，其為本發明光學裝置於一第五較佳實施例之部份結構的配置概念示意圖。其中，本較佳實施例之光學裝置1E大致類似於前述各較佳實施例中所述者，在此即不再予以贅述。而本較佳實施例與前述各較佳實施例的不同處在於，發光模 組12E更包括一準直單元(collimating unit)122，其係設置於發光源121以及分光單元15之間，用以使發光源121所輸出之來源光束L彼此平形並予以傳送至分光單元15。 Please refer to FIG. 8 , which is a schematic diagram showing the configuration of a part of the structure of an optical device according to a fifth preferred embodiment of the present invention. The optical device 1E of the preferred embodiment is substantially similar to that described in the foregoing preferred embodiments, and will not be further described herein. The difference between the preferred embodiment and the foregoing preferred embodiments is that the illumination mode The group 12E further includes a collimating unit 122 disposed between the light source 121 and the light splitting unit 15 for causing the source light beams L output by the light source 121 to be flat to each other and transmitted to the beam splitting unit 15.
特別說明的是，由於未被準直的來源光束入射至分光單元15時會有部份的來源光束是無法被利用，故在本較佳實施例中，透過準直單元122準直發光源121所輸出的來源光束L’、L”，使得來源光束L’、L”皆能夠彼此平形地入射至分光單元15，進而提升光學裝置1E的光使用效率。 In particular, since a source light beam that is not collimated is incident on the light splitting unit 15 and a part of the source light beam cannot be utilized, in the preferred embodiment, the light source 121 is collimated by the collimating unit 122. The output source beams L', L" are such that the source beams L', L" can be incident on the spectroscopic unit 15 in a flat shape with each other, thereby improving the light use efficiency of the optical device 1E.
請參閱圖9，其為本發明光學裝置於一第六較佳實施例之部份結構的配置概念示意圖。其中，本較佳實施例之光學裝置1F大致類似於前述第五佳實施例中所述者，在此即不再予以贅述。而本較佳實施例與前述第五較佳實施例的不同處在於，發光模組12F還包括一光束擴張單元(beam expansion unit)123，其係設置於發光源121以及準直單元122之間，用以擴張發光源121所輸出之來源光束L’、L”，並予以傳送至準直單元122，藉此增廣光的可用面積範圍 Please refer to FIG. 9, which is a schematic diagram showing the configuration concept of a part of the structure of the optical device according to a sixth preferred embodiment of the present invention. The optical device 1F of the preferred embodiment is substantially similar to that described in the foregoing fifth preferred embodiment, and will not be further described herein. The difference between the preferred embodiment and the foregoing fifth preferred embodiment is that the light-emitting module 12F further includes a beam expansion unit 123 disposed between the illumination source 121 and the collimation unit 122. For expanding the source light beams L', L" output by the illumination source 121, and transmitting them to the collimation unit 122, thereby widening the available area of the light.
請參閱圖10，其為本發明光學裝置於一第七較佳實施例之部份結構的配置概念示意圖。其中，本較佳實施例之光學裝置1G大致類似於前述各較佳實施例中所述者，在此即不再予以贅述。而本較佳實施例與前述各較佳實施例的不同處在於，第一結構光產生模組13G更包括設置於第一結構光輸出單元131以及分光單元15之間的第一準直單元132，且第二結構光產生模組14G更包括設置於第二結構光輸出單元141以及分光單元15之間的第二準直單元142；其中，第一準直單元132係用以準直來自分光單 元15的第一光束L11、L12並予以傳送至第一結構光輸出單元131，而第二準直單元142則用以準直來自分光單元15的第二光束L21、L22並予以傳送至第二結構光輸出單元141。 Please refer to FIG. 10, which is a schematic diagram showing the configuration of a part of the structure of an optical device according to a seventh preferred embodiment of the present invention. The optical device 1G of the preferred embodiment is substantially similar to that described in the foregoing preferred embodiments, and will not be further described herein. The difference between the preferred embodiment and the foregoing preferred embodiments is that the first structured light generating module 13G further includes a first collimating unit 132 disposed between the first structured light output unit 131 and the light splitting unit 15 . The second structure light generating module 14G further includes a second collimating unit 142 disposed between the second structured light output unit 141 and the beam splitting unit 15; wherein the first collimating unit 132 is used for collimating from the splitting light single The first light beams L11, L12 of the element 15 are transmitted to the first structured light output unit 131, and the second collimating unit 142 is used for collimating the second light beams L21, L22 from the light splitting unit 15 and transmitting them to the second Structure light output unit 141.
特別說明的是，由於未被準直的第一光束入射至第一結構光輸出單元131時會有部份的第一光束是無法被利用，且未被準直的第二光束入射至第二結構光輸出單元141時亦會有部份的第二光束是無法被利用，故於本較佳實施例中，在第一結構光輸出單元131以及分光單元15之間設置第一準直單元132以及在第二結構光輸出單元141以及分光單元15之間設置第二準直單元142，可提升光學裝置1G的光使用效率。 Specifically, since the first light beam that is not collimated is incident on the first structured light output unit 131, a part of the first light beam cannot be utilized, and the second light beam that is not collimated is incident on the second light. When the structured light output unit 141 also has a portion of the second light beam that cannot be utilized, in the preferred embodiment, the first collimating unit 132 is disposed between the first structured light output unit 131 and the light splitting unit 15. And providing the second collimating unit 142 between the second structured light output unit 141 and the light splitting unit 15, the light use efficiency of the optical device 1G can be improved.
請參閱圖11與圖12，圖11為本發明光學裝置於一第八較佳實施例之部份結構的配置概念示意圖，圖12為呈現在圖11所示投射面上之第一結構光圖案、第二結構光圖案以及複數干涉條紋的概念示意圖。其中，本較佳實施例之光學裝置1H大致類似於前述各較佳實施例中所述者，在此即不再予以贅述。而本較佳實施例與前述各較佳實施例的不同處在於，光學裝置1H還包括設置於殼體(圖未示，可參考圖1)外的第一導光單元16以及第二導光單元17，且第一導光單元16以及第二導光單元17用以分別導引第一結構光L1**以及第二結構光L2**投射至同一投射面93而使投射面93上呈現第一結構光圖案81**以及第二結構光圖案82**；於本較佳實施例中，第一結構光L1**以及第二結構光L2**係彼此同調相干(coherent)，因此投射面93上之第一結構光圖案81**以及第二結構光圖案82**的交疊處會呈現複數干涉條紋(interference fringe)83。 Please refer to FIG. 11 and FIG. 12. FIG. 11 is a schematic diagram showing the configuration of a part of the structure of the optical device according to the eighth embodiment of the present invention, and FIG. 12 is a first structural light pattern presented on the projection surface shown in FIG. Conceptual diagram of the second structured light pattern and the complex interference fringes. The optical device 1H of the preferred embodiment is substantially similar to that described in the foregoing preferred embodiments, and will not be further described herein. The difference between the preferred embodiment and the foregoing preferred embodiments is that the optical device 1H further includes a first light guiding unit 16 and a second light guiding device disposed outside the casing (not shown, see FIG. 1 ). The unit 17 and the first light guiding unit 16 and the second light guiding unit 17 are configured to respectively guide the first structured light L1** and the second structured light L2** to the same projection surface 93 to be rendered on the projection surface 93. a first structured light pattern 81** and a second structured light pattern 82**; in the preferred embodiment, the first structured light L1** and the second structured light L2** are coherent with each other, thus The intersection of the first structured light pattern 81** and the second structured light pattern 82** on the projection surface 93 presents a plurality of interference fringes 83.
進一步而言，由於第一結構光L1**以及第二結構光L2**皆來自同一發光源121，故透過控制發光源121的輸出，可提高第一結構光L1**以及第二結構光L2**的同調性以及同調長度(coherence length)，進而增加第一結構光L1**以及第二結構光L2**的相干性(coherent)。 Further, since the first structured light L1** and the second structured light L2** are both from the same light source 121, the first structured light L1** and the second structured light can be improved by controlling the output of the light emitting source 121. The coherence of L2** and the coherence length increase the coherent of the first structured light L1** and the second structured light L2**.
再者，於第一結構光圖案81**以及第二結構光圖案82**之交疊處所產生之複數干涉條紋83係遠細於第一結構光L1**以及第二結構光L2**，且由於前述說明已提過第一結構光圖案81**以及第二結構光圖案82**可分別被設計，故任二相鄰之干涉條紋的間距能被控制在極小的範圍，如0.1公厘(mm)以下，因此該些干涉條紋83可提供光學裝置1H或使用者對細節的分辨能力，即解析度，藉以應用於各種空間性(spatial)的識別，也就是透過提升空間解析度(spatial resolution)而對各種物件進行更精細的識別，例如物件位置與方向的識別、大小尺寸的識別或3D高度差距的識別等。 Furthermore, the complex interference fringes 83 generated at the intersection of the first structured light pattern 81** and the second structured light pattern 82** are far thinner than the first structured light L1** and the second structured light L2** And since the foregoing description has been mentioned that the first structured light pattern 81** and the second structured light pattern 82** can be separately designed, the spacing of any two adjacent interference stripes can be controlled to a very small range, such as 0.1. Below the centimeter (mm), the interference fringes 83 can provide the optical device 1H or the user's ability to distinguish details, ie, resolution, for use in various spatial recognition, that is, by improving spatial resolution. (spatial resolution) to make a more detailed identification of various objects, such as the identification of the position and direction of the object, the identification of the size and the recognition of the 3D height difference.
較佳者，但並不以此為限，本較佳實施例還使第一結構光圖案81**以及第二結構光圖案82**於一同調長度L(coherence length)內交疊，藉以使第一結構光圖案81**以及第二結構光圖案82**之交疊處所產生的複數干涉條紋83更為窄細，而同調長度L係滿足下列關係式：
而除了上述空間性的識別外，由於第一結構光L1*以及第二結構光L2*亦可被控制依據一預定時間序列而彼此間歇性同調相干，進而使投射面93上的多個干涉條紋83是間歇性的出現，因此該些干涉條紋還能夠應用於時間性(temporal)的識別，例如於多個預設的不同時間點啟動發光源121一段時間再予以關閉，因此在該些不同的時間點上，干涉條紋83才會呈現在投射面93並持續一段時間，直到發光源121被關閉，如此可應用於對物件或生物體在不同時段的響應(response)予以監控與識別。 In addition to the spatial identification described above, the first structured light L1* and the second structured light L2* may be controlled to be intermittently coherent with each other according to a predetermined time series, thereby causing a plurality of interference fringes on the projection surface 93. 83 is an intermittent occurrence, so the interference fringes can also be applied to temporal recognition, for example, starting the illumination source 121 for a certain period of time at a plurality of preset different time points, and then turning off, thus in the different At the point in time, the interference fringes 83 will appear on the projection surface 93 for a period of time until the illumination source 121 is turned off, so that it can be applied to monitor and identify the response of the object or organism at different time periods.
此外，有關於如何使第一結構光L1*以及第二結構光L2*彼此同調相干，例如透過分別控制第一結構光L1*與第二結構光L2*的波長或光程等，以及如何使第一結構光L1*以及第二結構光L2*依據預定時間序列而彼此間歇性同調相干，皆係為熟知本技藝人士所知悉，故在此即不再予以贅述。 In addition, how to make the first structured light L1* and the second structured light L2* coherent with each other, for example, by controlling the wavelength or optical path of the first structured light L1* and the second structured light L2*, respectively, and how to make The first structured light L1* and the second structured light L2* are intermittently coherent with each other in accordance with a predetermined time series, which are well known to those skilled in the art and will not be further described herein.
根據以上的說明，由於本發明可透過單一光學裝置產生輸出多個相同形式或不同形式的結構光，因此應用本發明光學裝置的電子設備可於僅設置單一光學裝置的情況下提供多種不同的功能，並有助於電子設備朝向輕、薄、短小的趨勢發展，實具產業利用價值。 According to the above description, since the present invention can output a plurality of structured lights of the same form or different forms through a single optical device, the electronic device to which the optical device of the present invention is applied can provide a plurality of different functions in the case where only a single optical device is provided. And contribute to the development of electronic equipment towards a light, thin, short trend, and the value of industrial use.
以上所述僅為本發明之較佳實施例，並非用以限定本發明之申請專利範圍，因此凡其它未脫離本發明所揭示之精神下所完成之等效改變或修飾，均應包含於本案之申請專利範圍內。 The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent changes or modifications made without departing from the spirit of the present invention should be included in the present invention. Within the scope of the patent application.
1A‧‧‧光學裝置 1A‧‧‧Optical device
13A‧‧‧第一結構光產生模組 13A‧‧‧First structured light generation module
14A‧‧‧第二結構光產生模組 14A‧‧‧Second structured light generation module
15A‧‧‧分光單元 15A‧‧ ‧ Splitting unit
121‧‧‧發光源 121‧‧‧Light source
131‧‧‧第一結構光輸出單元 131‧‧‧First structured light output unit
141‧‧‧第二結構光輸出單元 141‧‧‧Second structured light output unit
151‧‧‧第一表面 151‧‧‧ first surface
152‧‧‧第二表面 152‧‧‧ second surface
153‧‧‧第三表面 153‧‧‧ third surface
159‧‧‧稜線 159‧‧‧ ridgeline
L’‧‧‧第一部份來源光束 L’‧‧‧The first part of the source beam
L”‧‧‧第二部份來源光束 L”‧‧‧Second part source beam
L1‧‧‧第一光束 L1‧‧‧first beam
L1*‧‧‧第一結構光 L1*‧‧‧First structured light
L2‧‧‧第二光束 L2‧‧‧second beam
L2*‧‧‧第二結構光 L2*‧‧‧Second structured light
Claims (21)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104134040A TWI582382B (en) | 2015-10-16 | 2015-10-16 | Optical device |
| US14/952,387 US9958686B2 (en) | 2015-10-16 | 2015-11-25 | Optical apparatus |
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| TW104134040A TWI582382B (en) | 2015-10-16 | 2015-10-16 | Optical device |
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| TWI582382B TWI582382B (en) | 2017-05-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI657264B (en) * | 2018-07-19 | 2019-04-21 | 香港商印芯科技股份有限公司 | Structured light projecting apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4774473A (en) * | 1985-10-28 | 1988-09-27 | The Charles Stark Draper Laboratory, Inc. | Limited diffraction feedback laser system having a cavity turbulence monitor |
| WO2000068724A1 (en) * | 1999-05-10 | 2000-11-16 | Leica Microsystems Ag | Beam splitter module for microscopes |
| JP2001255281A (en) * | 2000-01-17 | 2001-09-21 | Agilent Technol Inc | Inspection apparatus |
| EP1664932B1 (en) * | 2003-09-15 | 2015-01-28 | Zygo Corporation | Interferometric analysis of surfaces |
| KR101680762B1 (en) * | 2010-10-29 | 2016-11-29 | 삼성전자주식회사 | Beam splitter for 3D camera and 3D image acquisition apparatus employing the same |
| US9684149B2 (en) * | 2012-08-07 | 2017-06-20 | Carl Zeiss Industrielle Messtechnik Gmbh | Coordinate measuring machine and method for determining spatial coordinates on a measurement object |
| KR20140075163A (en) * | 2012-12-11 | 2014-06-19 | 한국전자통신연구원 | Method and apparatus for projecting pattern using structured-light |
| CN103913129B (en) * | 2014-04-10 | 2017-01-18 | 泉州师范学院 | Optical system generating wide measuring area approximate diffraction-free structure light |
| CN203949640U (en) * | 2014-07-15 | 2014-11-19 | 中国人民解放军装甲兵工程学院 | Structured light patterns generator |
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| TWI657264B (en) * | 2018-07-19 | 2019-04-21 | 香港商印芯科技股份有限公司 | Structured light projecting apparatus |
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