TW201723531A - Optical device - Google Patents

Abstract

The present invention discloses an optical device including a structured light generation unit, a light-emitting unit, a sensor, and a substrate. The light-emitting unit is used to provide a light beam. A structured light is generated after the light beam passes through the structured light generation unit. When the structured light is projected on an object, a structured light pattern is shown on the object. Furthermore, the sensor is used to provide a sensing function. The sensor and the light-emitting unit are arranged on the same substrate so as to have the sensor and the light-emitting unit are integrated into one.

Description

Optical device

This invention relates to an optical device, and more particularly to an optical device for providing structured light.

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 Portable electronic devices such as smart phones and wearable electronic devices can be taken out and used at any time when needed, which not only has important commercial value, but also adds color to the daily life of the general public.

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 installed on electronic devices; and in order to respond to these demands, there are now some A technique related to structured light is proposed; for example, the applicant's application number is The use of an optical device to output a structured light to detect a surface to be tested to obtain the distance and flatness of the surface to be tested is disclosed in the Taiwan Patent Application No. 104115677, the disclosure of which is incorporated herein by reference. The optical device is used to output dual-structured light to detect the measured object to obtain accurate depth information.

However, most of the techniques related to structured light need to be matched with the sensing unit for sensing the structured light pattern to enable the application to be implemented. However, in the prior art, since the light-emitting unit and the sensing unit in the optical device are both Separate elements that are independently provided, so the volume of the optical device or the size of the electronic device in which the optical device is disposed is not easily developed toward a light, thin, and short trend. Therefore, under the premise of miniaturizing the volume of electronic devices, the technology of structured light can be applied to electronic devices to provide more diverse functions, which has become an important issue.

An object of the present invention is to provide an optical device, particularly an optical device capable of outputting structured light to provide a plurality of functions, and since the light-emitting unit and the sensing unit in the optical device are integrated into one body, the space occupied is limited. Electronic devices that facilitate optical devices or that are equipped with optical devices are trending toward lightness, thinness, and shortness.

In a preferred embodiment, the present invention provides an optical device comprising: a structured light generating unit; An illuminating unit includes at least one illuminating source, and the at least one illuminating source is configured to output a light beam, and the beam is formed to form a structured light after passing through the structured light generating unit; wherein the structured light is projected When an object is present, the object presents a structured light pattern; a sensing unit is configured to provide a sensing function; and a substrate; wherein the light emitting unit and the sensing unit are disposed on the substrate and integrated into One.

In a preferred embodiment, the sensing function includes at least one of a thermal sensing function, an electrical sensing function, a magnetic sensing function, a light sensing function, and a structured light pattern sensing function.

In a preferred embodiment, the sensing unit is a complementary metal oxide semiconductor device (CMOS), a photometric sensing element (ALS), a photodiode, and a proximity sensor. Or a thermal sensing element.

In a preferred embodiment, the optical device further includes a control unit electrically connected between the light emitting unit and the sensing unit, and controls the light emitting unit according to the sensing result of one of the sensing units.

In a preferred embodiment, the at least one illumination source comprises a plurality of illumination sources, and at least one of the plurality of illumination sources outputs the beam according to a predetermined sequence or stops outputting the beam via control of the control unit.

In a preferred embodiment, the at least one light source comprises at least one light emitting chip or at least one light emitting die.

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

In a preferred embodiment, the at least one illumination source comprises a plurality of illumination sources, and the illumination sources surround the periphery of the sensing unit.

In a preferred embodiment, the light beam includes at least one of a light beam having a first wavelength interval, a light beam having a second wavelength interval, and a light beam having a thermally induced wavelength interval.

In a preferred embodiment, the structured light generating unit comprises at least one of a diffractive optical element (DOE), an array of lenticular lenses, and an array of micro-lens arrays. .

In a preferred embodiment, the optical device further includes a collimating lens group disposed between the light emitting unit and the structured light generating unit for collimating the light beam from the light emitting unit and transmitting the light beam to the structure Light generating unit.

In a preferred embodiment, the light emitting unit outputs the light beam according to a predetermined sequence or stops outputting the light beam.

In a preferred embodiment, the sensing unit provides the sensing function according to a predetermined sequence or stops providing the sensing function.

In a preferred embodiment, the optical device further includes a housing for housing and fixing the structured light generating unit, the light emitting unit, and the sensing unit.

In a preferred embodiment, the substrate has a height difference, or the substrate is laminated by a plurality of substrates, or one of the plurality of substrates of the substrate is a ground layer.

In a preferred embodiment, the optical device is applied to a portable electronic device.

1‧‧‧Optical device

1A‧‧‧Optical device

1B‧‧‧Optical device

1C‧‧‧Optical device

1D‧‧‧Optical device

2‧‧‧Portable electronic devices

8‧‧‧ structured light pattern

9‧‧‧ objects

11‧‧‧Lighting unit

12‧‧‧Structural light generating unit

13‧‧‧Sensor unit

14‧‧‧Control unit

15‧‧‧Substrate

15'‧‧‧Substrate

16‧‧‧ collimating lens group

17‧‧‧Shell

110‧‧‧Light source

111‧‧‧Light source

112‧‧‧Light source

113‧‧‧Light source

114‧‧‧Light source

115‧‧‧Light source

116‧‧‧Light source

117‧‧‧Light source

118‧‧‧Light source

151‧‧‧Substrate

152‧‧‧Substrate

153‧‧‧Substrate

L1‧‧‧ Beam

L2‧‧‧ structured light

S‧‧‧ signal

Figure 1 is a schematic view showing the structure of an optical device of the present invention in a first preferred embodiment.

2 is a schematic view showing the structure of the substrate, the light-emitting unit, and the sensing unit of the optical device shown in FIG. 1 from another perspective.

Figure 3 is a schematic view showing the structure of an optical device of the present invention in a second preferred embodiment.

4 is a schematic view showing the structure of a substrate, a light emitting unit, and a sensing unit of a third preferred embodiment of the optical device of the present invention.

Figure 5 is a schematic view showing the structure of an optical device of the present invention in a fourth preferred embodiment.

FIG. 6 is a schematic diagram of a preferred structure of an optical device of the present invention applied to a portable electronic device.

1 and FIG. 2, FIG. 1 is a schematic view showing the structure of an optical device according to a first preferred embodiment of the present invention, and FIG. 2 is a perspective view of the substrate, the light-emitting unit and the sensing unit of the optical device shown in FIG. Schematic of the structure concept. The optical device 1A includes a light emitting unit 11, a structured light generating unit 12, a sensing unit 13, a control unit 14, and a substrate 15, and the control unit 14 is electrically connected between the light emitting unit 11 and the sensing unit 13, and the sensing unit 13 and the light emitting unit 11 Then, they are disposed on the same substrate 15 and integrated into one body.

Furthermore, the light emitting unit 11 includes a plurality of light emitting sources 110 to 118, and A light source 110~118 may be a laser diode (LD), a light emitting diode (LED), an organic light emitting diode (OLED), a heat source or a laser diode, a light emitting diode, Other light-emitting elements of semiconductors such as organic light-emitting diodes; wherein the light beam L1 outputted by the light-emitting unit 11 may include a light beam having a first wavelength interval and/or a light beam having a second wavelength interval, for example, any The light beam L1 output by the light sources 110 to 118 may be a visible light beam, an invisible light beam (such as an ultraviolet light beam, an infrared light beam, a near infrared light beam or a far infrared light beam, etc.) or a light beam having a thermally induced wavelength interval. In addition, any of the illumination sources 110-118 may be a type of a light-emitting chip, or may be a pattern of light-emitting dies, and the light-emitting sources 110-118 surround the periphery of the sensing unit 13. However, the above is only one embodiment, and the number and type of the light sources 110 to 118 and the relative positional relationship between the light sources 110 to 118 and the sensing unit 13 are not limited to the above.

Further, the structured light generating unit 12 is configured to pass the light beam L1 supplied from the light emitting unit 11 and perform beam shaping to form an outwardly output structured light L2, and project the structured light L2 to the object. When the object 9 is on, a structured light pattern 8 is presented on the object 9; wherein the structured light generating unit 12 can be designed according to actual application requirements, thereby causing the outwardly outputting structured light L2 and the object 9 to be presented. The structured light pattern 8 is elastically changed,

In the preferred embodiment, the structured light generating unit 12 includes at least one of a diffractive optical element (DOE), an array lenticular lens, and an array micro-lens array, but not The above is limited to the above; and how to design the structured light generating unit 12 so that the structured light L2 outputted through the structured light generating unit 12 meets the needs of the user is known to those skilled in the art, and therefore is not to be Narration.

Furthermore, the sensing unit 13 provides the required feeling according to the actual situation. The function should be, for example, to induce a change in the structured light pattern 8 presented on the object 9, or to thermally, electrically, magnetically or optically sense the environment in which the optical device 1A is used, that is, the sensing unit 13 is used. The signal S (such as a thermal signal, an electrical signal, a magnetic signal, an optical signal, etc.) from the outside of the optical device 1A is sensed. In the preferred embodiment, the sensing unit 13 includes a complementary metal oxide semiconductor device (CMOS), a photometric sensing element (ALS), a photodiode, a proximity sensor, and a thermal sensing. At least one of the elements, but not limited to the above.

The control unit 14 controls the illumination unit 11 according to the sensing result of the sensing unit 13, and any of the illumination sources 110-118 can output the light beam L1 or stop the output light beam L1 according to a predetermined sequence via the control of the control unit 14. That is, any of the illumination sources 110-118 can output the light beam L1 in a specific time interval via the control of the control unit 14, and stop the output light beam L1 in another specific time interval. In addition, the sensing unit 13 can also provide a sensing function according to a predetermined sequence or stop providing the sensing function via the control of the control unit 14.

Please refer to FIG. 3 , which is a schematic structural view of an optical device according to a second preferred embodiment of the present invention. The optical device 1B of the preferred embodiment is substantially similar to that described in the first preferred embodiment, and will not be further described herein. The difference between the preferred embodiment and the first preferred embodiment is that the optical device 1B further includes a collimating lens group 16 disposed between the light emitting unit 11 and the structured light generating unit 12 for collimating from the light. The light beam L1 of the unit 11 is transmitted to the structured light generating unit 12. Further, since a portion of the light beam cannot be utilized when the uncollimated light beam is incident on the structured light generating unit 12, in the preferred embodiment, the light emitting unit 11 is collimated through the collimating lens group 16. The output beam L1 makes the complex beam L1 can be incident on the structured light generating unit 12 in a flat shape with each other, thereby improving the light use efficiency of the optical device 1B.

Please refer to FIG. 4 , which is a schematic structural diagram of a substrate, a light emitting unit and a sensing unit of an optical device according to a third preferred embodiment of the present invention. The optical device 1C of the preferred embodiment is substantially similar to that described in the foregoing first and second preferred embodiments, and will not be further described herein. The difference between the preferred embodiment and the first and second preferred embodiments is that the substrate 15' has a height difference and is laminated by a plurality of substrates 151 to 153, and one of the substrates 15' is The material 151 is a ground layer.

Please refer to FIG. 5 , which is a schematic structural view of an optical device according to a fourth preferred embodiment of the present invention. The optical device 1D of the preferred embodiment is substantially similar to that described in the foregoing first to third preferred embodiments, and will not be further described herein. The difference between the preferred embodiment and the foregoing first to third preferred embodiments is that the optical device 1D further includes a housing 17 for housing and fixing the structured light generating unit 12 and the light emitting unit. 11. Sensing unit 13 and control unit 14.

Please refer to FIG. 5 , which is a schematic diagram of a preferred structure of an optical device of the present invention applied to a portable electronic device. FIG. 5 illustrates an optical device 1 as described in the first or second preferred embodiment of the portable electronic device 2, and the portable electronic device 2 can be a mobile phone, a tablet computer, or a wearable device, but Limited to the above. Moreover, those skilled in the art can apply the optical device 1 of the present invention to other electronic devices according to the teachings of FIG. 5 according to actual needs.

In particular, since the sensing unit and the light emitting unit in the optical device of the present invention are integrated into one body, and are not separate components that are separately provided, the total space occupied by the sensing unit and the light emitting unit is limited, which is advantageous for the optical device. Or electronic devices equipped with optical devices are moving toward light, thin, and short trends, while also providing more diverse functions through structured light.

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.

1B‧‧‧Optical device

8‧‧‧ structured light pattern

9‧‧‧ objects

11‧‧‧Lighting unit

12‧‧‧Structural light generating unit

13‧‧‧Sensor unit

14‧‧‧Control unit

15‧‧‧Substrate

16‧‧‧ collimating lens group

110‧‧‧Light source

111‧‧‧Light source

112‧‧‧Light source

113‧‧‧Light source

114‧‧‧Light source

115‧‧‧Light source

116‧‧‧Light source

117‧‧‧Light source

118‧‧‧Light source

L1‧‧‧ Beam

L2‧‧‧ structured light

S‧‧‧ signal

Claims (16)

An optical device comprising: a structured light generating unit; an illuminating unit comprising at least one illuminating source, wherein the at least one illuminating source is configured to output a light beam, and the light beam is formed to form a structured light after passing through the structured light generating unit (structured light); wherein, when the structured light is projected onto an object, the object presents a structured light pattern; a sensing unit is configured to provide a sensing function; and a substrate; wherein the light emitting unit and The sensing unit is integrated on the substrate and integrated. The optical device of claim 1, wherein the sensing function comprises at least one of a thermal sensing function, an electrical sensing function, a magnetic sensing function, a light sensing function, and a structured light pattern sensing function. The optical device of claim 1, wherein the sensing unit is a complementary metal oxide semiconductor device (CMOS), a photometric sensing element (ALS), a photodiode, and a proximity A proximity sensor or a thermal sensing element. The optical device of claim 1, further comprising a control unit electrically connected between the light-emitting unit and the sensing unit, and controlling the light-emitting unit according to the sensing result of one of the sensing units. The optical device of claim 4, wherein the at least one illumination source comprises a plurality of illumination sources, and at least one of the plurality of illumination sources outputs the light beam according to a predetermined sequence via control of the control unit Stop outputting the beam. The optical device of claim 1, wherein the at least one light source comprises at least one light emitting chip or at least one light emitting die. The optical device of claim 1, wherein the at least one light source comprises a laser diode (LD), a light emitting diode (LED), an organic light emitting diode (OLED), and a light source. At least one of a thermal source. The optical device of claim 1, wherein the at least one illumination source comprises a plurality of illumination sources, and the illumination sources surround the periphery of the sensing unit. The optical device of claim 1, wherein the light beam comprises at least one of a light beam having a first wavelength interval, a light beam having a second wavelength interval, and a light beam having a thermally induced wavelength interval. The optical device of claim 1, wherein the structured light generating unit comprises a diffractive optical element (DOE), an array of lenticular lenses, and an array of micro-lens arrays. At least one of them. The optical device of claim 1, further comprising a collimating lens And a set between the light emitting unit and the structured light generating unit for collimating the light beam from the light emitting unit and transmitting the light beam to the structured light generating unit. The optical device of claim 1, wherein the light emitting unit outputs the light beam according to a predetermined sequence or stops outputting the light beam. The optical device of claim 1, wherein the sensing unit provides the sensing function according to a predetermined sequence or stops providing the sensing function. The optical device of claim 1, further comprising a housing for accommodating and fixing the structured light generating unit, the light emitting unit, and the sensing unit. The optical device according to claim 1, wherein the substrate has a height difference, or the substrate is laminated by a plurality of substrates, or one of the plurality of substrates of the substrate is connected Stratum. The optical device according to claim 1 is applied to a portable electronic device.