TWI472739B - Optical detection apparatus - Google Patents

Description

Optical detection device

The present invention relates to a detecting device, and more particularly to an optical detecting device.

As technology advances, medical detection technology has evolved from invasive detection to non-invasive detection. Among them, non-invasive detection is performed by using near-infrared rays to illuminate the human body and detecting the light passing through the human body for tissue detection.

In the process of detecting, the optical detecting device is often moved to detect different parts. Therefore, the convenience of use of the optical detecting device becomes one of the considerations for the user to purchase the product. If the optical detection device is too large, the user is not allowed to detect it by himself. In addition, the structure of the existing optical detecting device is removed, and the user has different experience in testing, which is another consideration for the user to purchase the product.

Therefore, how to provide an optical detecting device, which can be miniaturized and provide an innovative concept, thereby improving the convenience of use and product competitiveness, has become one of important topics.

In view of the above problems, an object of the present invention is to provide an optical detecting device which is miniaturized and provides an innovative concept, thereby improving usability and product competitiveness.

To achieve the above object, an optical detecting device according to the present invention is used for detecting a tissue, including a cover, a light emitting unit, a light sensing unit, and a conductive unit. The illumination unit is located within the housing and emits light of at least one wavelength into the tissue. The light sensing unit senses the light emitted by the tissue to generate a sensing signal. At least a portion of the conductive unit is disposed on an outer surface of the cover or disposed in the cover and transmits a driving signal to the light emitting unit.

In one embodiment, the cover is a light blocking element, and the light sensing element is fixed to the light blocking element.

In one embodiment, the cover has a perforation and the electrically conductive unit is coupled to the illumination unit by a perforation. In addition, in the non-perforated manner of the cover body, the conductive unit may be disposed on the outer surface of the cover body and enters from one of the cover bodies to be connected to the light emitting unit.

In one embodiment, the illumination unit emits light having a particular wavelength band, or alternately emitting light of different wavelengths, or simultaneously emitting light of different wavelengths carried at different frequencies. The detection efficiency of the optical detecting device can be improved by emitting light having a specific wavelength band or a plurality of wavelengths by the light emitting unit.

In an embodiment, the light sensing unit is located within the cover or embedded in the cover, which may further miniaturize the optical detection device. The light sensing unit may include a light sensing element or an array of light sensing elements for sensing.

In an embodiment, the light sensing unit is located on an outer surface of the cover, and the outer surface is transparent, such that light can be emitted from the cover and received by the light sensing unit.

In an embodiment, the light sensing unit comprises a light sensing element, a plurality of light sensing elements, or an array of light sensing elements. The array of light sensing elements can be located on one surface of the cover to sense light emitted from the tissue. When the cover is moved to any area, the light sensing element array can clearly sense the light emitted from the area, and the detection data of the area corresponding to each point of the light sensing element array is obtained, thereby improving the detection performance. Together with the positioning of the positioning unit, the detection data of the entire region of the tissue can be raised to the resolution level of the array of light sensing elements.

In one embodiment, the light sensing unit includes a light splitting portion and a sensing portion, and the light splitting portion divides the light emitted by the tissue into light beams of a plurality of wavelengths and transmits the light to the light sensing element of the sensing portion. The spectroscopic unit can perform spectrometry on a time domain or a space domain. The time domain means that the light splitting portion sequentially separates light of different wavelengths on the time axis and transmits the light to the sensing portion. The spatial domain means that the light splitting portion spatially separates light of different wavelengths at a time and transmits the light to the sensing portion. In addition, the light sensing unit may include a demodulator and a light sensing component, and the demodulator may demodulate carriers of different frequencies to obtain different wavelengths of light carried on the carrier, that is, a frequency domain. Splitting light.

In one embodiment, the conductive unit comprises a conductive layer, or an electrical conductor, or a wire. The conductive layer may be disposed on the inner surface or the outer surface of the cover body, and the electrical conductor or the wire may be connected to the light emitting unit through the cover body through the through hole or into the cover body through the outer surface of the cover body. The conductive unit may comprise a transparent conductive material such as Indium Tin Oxide (ITO) to avoid shading.

In an embodiment, the optical detecting device further comprises a processing unit located outside or within the cover body and transmitting the driving signal via the conductive unit to drive the light emitting unit. If the processing unit is located in the cover, it can be connected to the light sensing unit, and the light sensing unit is closer to the light emitting unit to avoid being blocked by the processing unit, and the sensing signal generated by the light sensing unit is sensed. It can be transmitted to the processing unit for analysis or transmitted via a wireless transmission unit.

In one embodiment, the optical detecting device further includes a connecting unit coupled to the cover and the light emitting unit. The connecting unit may include, for example, a plurality of connecting elements, one end of which is coupled to the cover and the other end coupled to the light emitting unit, thereby fixing the light emitting unit.

In an embodiment, the optical detecting device further includes a positioning unit having at least three signal transmitting ends, wherein a distance between the signal transmitting end and the light sensing unit is substantially fixed. The signal transmission end can be a signal receiving end, or a signal transmitting end, or a signal receiving/transmitting end. The signal transmitted by the positioning unit includes at least one of an optical signal and an audio signal, for example, integrated optical positioning and sound wave positioning. Since the distance between the signal transmission end (for example, the first signal transmission end) of the positioning unit and the light sensing unit is substantially fixed, when the light sensing unit moves to detect various parts of the tissue, the first signal transmission end also follows the light. The sensing unit moves and transmits signals to the other two signal transmitting ends of the positioning unit, so that the position of the first signal transmitting end can be located, and the position of the light sensing unit is also known, so the light can be aligned by the positioning unit. The sensing unit performs positioning to know the position of each detection part, and integrates the data of each detection part to facilitate the establishment of a whole area detection database for comprehensive analysis and interpretation, thereby improving detection efficiency.

As described above, since the light-emitting unit is disposed in the cover body, the entire optical detecting device can be miniaturized to improve the convenience of detection and product competitiveness, and is driven by the path of the outer surface of the cover body and/or the internal path of the conductive unit. The signal is transmitted to the light unit located inside the cover to drive its illumination, which is an innovative design. In addition, the present invention detects the tissue portion of the cover covered by the cover by the design of the cover. Thus, the optical detecting device is like a magnifying glass, and as the cover moves, different parts of the tissue can be detected and the user is provided differently. More intuitive and easy to use testing experience.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, a plurality of optical detecting devices according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals.

1 is a schematic view of an optical detecting device 1 according to a first embodiment of the present invention. The optical detecting device 1 is for detecting a tissue T, such as a tissue of a human body, an animal, a plant or a drug, and is a human body tissue, and a breast is taken as an example.

The optical detecting device 1 includes a cover 11, a light emitting unit 12, a light sensing unit 13, and a conductive unit 14. The cover 11 is exemplified herein by a circular cover, but the invention is not limited thereto, and the cover 11 can be changed to other shapes as required, such as an ellipse, a square, a triangle, or the like. The cover 11 can be a light-shielding element, and the light-shielding element is used to prevent external light from entering the light-shielding element. For example, the outer surface has a reflective layer to form a light-shielding element.

The illumination unit 12 is located within the housing 11 and emits light of at least one wavelength into the tissue T. The light emitting unit 12 can emit light having one of a specific wavelength band or emit light of a different wavelength. The light emitting unit 12 may include at least one light emitting element that emits light of a wavelength band, for example, between 320 nm and 1100 nm, and includes ultraviolet light, visible light, and near infrared (NIR) wavelength. When the light emitting unit 12 is to emit light of different wavelengths, the light emitting unit 12 may include a plurality of light emitting elements, such as a plurality of light emitting diodes, emitting different wavelengths of light at different time points; or, the light emitting unit 12 may include a plurality of light emitting elements simultaneously Lights of different wavelengths are emitted, and the light beams are respectively carried on carriers of different frequencies, and then demodulated by the light sensing unit 13; or, the light emitting unit 12 can emit a full-wavelength wavelength light, and then by a filter wheel (filter Wheel), an acousto-optical tunable filter (AOTF) or a liquid crystal tunable filter (LCTF) to emit light of different wavelengths. The above-mentioned light-emitting element is, for example, a light-emitting diode (LED) or a laser diode.

The light emitting unit 12 emits light having a specific wavelength band or a plurality of wavelengths, wherein different wavelengths of light can correspond to different detection items, thereby improving the detection performance of the optical detecting device.

The light sensing unit 13 senses the light emitted by the tissue T to generate a sensing signal. The light emitted by the tissue T may comprise the emission of incident light, or the excitation of the tissue to produce an emitted light, or the resulting tissue or adjacent tissue to produce an emitted light. The relative position of the light sensing unit 13 and the tissue T is variable, and by moving the cover 11, the relative position of the light sensing unit 13 and the tissue T can be simultaneously changed.

The light sensing unit 13 can include a light sensing component, a plurality of light sensing components, or an array of light sensing components, as exemplified by a plurality of light sensing components including a light sensing component or a plurality of light sensing components. The light sensing unit 13 can be disposed inside or outside the cover 11 or embedded in the cover 11 , for example, disposed outside the cover 11 and located on an outer surface 111 of the cover 11 ( For example, the top surface of the cover is light-transmitting to allow light to be emitted from the cover 11 to the light sensing unit 13. In the present embodiment, the light emitted by the light-emitting unit 12 is incident on the tissue T, and the incident point is located approximately at the center of the cover 11, and then the light emitted by the tissue T is directly incident on the light located on the top surface of the cover 11. The sensing unit 13 is sensed by the light sensing element to generate a sensing signal.

When the light-emitting unit 12 emits light of different wavelengths at different times, the light sensing unit 13 is, for example, a camera, and performs imaging at different time points. When the light-emitting unit 12 carries light of different wavelengths on the carrier, the light sensing unit 13 can include a demodulator and a light sensing component, and the demodulator can demodulate carriers of different frequencies to obtain The light of different wavelengths of the carrier, and the light is then sensed by the light sensing element, which is the splitting of the frequency domain. When the light emitting unit 12 emits light having a specific wavelength band, the light sensing unit 13 may include a light splitting portion 131 and a sensing portion 132 (as shown in FIG. 2). The light splitting unit 131 divides the emitted light into light of a plurality of wavelengths and transmits the light to the light sensing element of the sensing unit 132. The spectroscopic unit 131 can perform spectrometry on a time domain or a space domain. The time domain refers to the light splitting portion 131 sequentially separating the light of different wavelengths on the time axis and transmitting the light to the sensing portion 132. The time domain splitting can be performed, for example, by a filter wheel, an acousto-optic tunable filter, a liquid crystal tunable filter. Implemented. The spatial domain means that the light splitting portion 131 spatially separates light of different wavelengths at a time and transmits it to the sensing portion 132, and the spatial domain splitting can be performed, for example, by a spectroscopic prism or a grating.

In addition, the sensing portion 132 may include a single light sensing element, a plurality of light sensing elements, or an array of light sensing elements, or a camera, which may include, for example, a photo diode, a photo resistor, or A photomultiplier tube, which is composed of, for example, a charge coupled device (CCD) or a complementary MOS semi-sensing element (CMOS). The photoresistor is, for example, a cadmium sulfide photo sensing element.

As shown in FIG. 1 , at least a portion of the conductive unit 14 is disposed on an outer surface of the cover 11 or disposed in the cover 11 and transmits a driving signal to the light emitting unit 12 . The conductive unit 14 can include a conductive layer, or an electrical conductor, or a wire. Wherein the conductive layer may be disposed on the inner surface or the outer surface of the cover body 11, and the electric conductor or the wire may pass through the cover body 11 through the through hole of the cover body 11, or enter the cover body 11 from the outer surface of the cover body 11 and the light emitting unit. 12 connections. Conductive unit 14 can comprise a transparent conductive material, such as indium tin oxide, to avoid shading. In the present embodiment, the conductive unit 14 includes a plurality of wires that are connected into the cover 11 from the outer surface of the cover 11 to be connected to the light emitting unit 12.

In addition, the optical detecting device 1 further includes a processing unit 15 which can be located outside or within the cover 11 and transmits a driving signal via the conductive unit 14 to drive the light emitting unit 12. If the processing unit 15 is located inside the cover 11, it can be connected to the light sensing unit 13, and the light sensing unit 13 is closer to the light emitting unit 12 to avoid being covered by the processing unit 15, and the light sensing unit 13 is sensed. The measured sensing signals can be transmitted to the processing unit 15 for analysis or transmitted via the wireless transmission unit. In this embodiment, the processing unit 15 is disposed outside the cover 11 and transmits a driving signal to the light emitting unit 12 through the conductive unit 14 to drive the light.

In addition, please refer to FIG. 3 , which is a schematic diagram of the photo detecting device 1 further having a positioning unit 16 . The positioning unit 16 has at least three signal transmitting ends 161, 162, and 163, wherein the distance between the signal transmitting end 161 and the light sensing unit 13 is substantially fixed, preferably the relative position of the signal transmitting end 161 and the light sensing unit 13. It is essentially fixed. The signal transmission end 161 may be disposed on the outer surface or the inner surface of the cover body 11 as an example of the outer surface of the cover body 11. The signal transmitting end 161, 162, 163 can be a signal receiving end, or a signal transmitting end, or a signal receiving/transmitting end, as long as the positioning unit 16 has both signal transmission and signal reception. Of course, the more the number of signal transmission ends, the further the positioning accuracy can be further upgraded. The signal transmitted by the positioning unit 16 may include at least one of a wave signal (eg, light wave, microwave, ...) and an audio signal. And the transmitted signal may contain specific information to indicate which signal transmission terminal sends the signal.

Since the distance between the signal transmitting end 161 of the positioning unit 16 and the light sensing unit 13 is substantially fixed, when the light sensing unit 13 moves to detect the parts of the tissue T, the signal transmitting end 161 also follows the light sensing unit 13 The signal is transmitted and transmitted to the other two signal transmitting ends 162 and 163 of the positioning unit 16, so that the position of the signal transmitting end 161 can be located, and the position of the light sensing unit 13 is also known, so that the positioning unit 16 can be used. The light sensing unit 13 is positioned to know the position of each detecting part, and the data of each detecting part is integrated, so that the whole area detecting database can be established to facilitate comprehensive analysis and interpretation, thereby improving the detection efficiency.

In addition, please refer to FIG. 4, which is a schematic diagram of the photodetecting device 1 further having a connecting unit 17. The connection unit 17 is connected to the cover 11 and the light-emitting unit 12, and the connection relationship between the connection unit 17 and the cover 11 and the light-emitting unit 12 is clearly shown. Therefore, other elements are not shown. The connecting unit 17 may include, for example, a plurality of connecting elements 171, one end of which is coupled to the cover 11 and the other end coupled to the light emitting unit 12. Thereby, the light emitting unit 12 is fixed.

FIG. 5 is a schematic diagram of an optical detecting device 2 according to a second embodiment of the present invention. The optical detecting device 2 includes a cover 21, a light emitting unit 22, a light sensing unit 23, and a conductive unit 24. The main difference from the first embodiment is that the light sensing unit 23 includes an array of light sensing elements, and the array of light sensing elements is located on one surface of the cover 21, such as a top surface. An array of light sensing elements is located on one surface of the shell 21 to sense light rays emerging from the tissue. When the cover 21 is moved to any area, the light sensing element array can clearly sense the light emitted from the area, and obtain the detection data of the sensing points corresponding to the array of the light sensing elements in the area, thereby improving detection. efficacy. Together with the positioning of the positioning unit 26, the detection data of the entire region of the tissue T can be raised to the resolution level of the array of light sensing elements. In this embodiment, the cover 21 can be a non-light-guiding element, and the light emitted by the tissue is directly received by the cover light sensing unit 23. In this aspect, the closer the light-sensing unit 23 is to the tissue T, the more Better sensing results.

In addition, in the embodiment, the processing unit 25 is located above the light sensing unit 23 and transmits the driving signal via the conductive unit 24. The conductive unit 24 may enter the opening of the cover 21 from the outer surface of the cover 21 or, as shown in this embodiment, the cover 21 and the light sensing unit element array each have at least one through hole, and the conductive unit 24 is coupled to the processing unit 25. The connection is made and connected to the light-emitting unit 22 via the perforation into the cover 21.

FIG. 6 is a schematic diagram of an optical detecting device 3 according to a third embodiment of the present invention. The optical detecting device 3 includes a cover 31, a light emitting unit 32, a light sensing unit 33, and a conductive unit 34. The main difference from the first embodiment is that the light sensing unit 33 is located inside the cover 31, which can further miniaturize the optical detecting device 3. The light sensing unit 33 can include a light sensing component, a plurality of light sensing components or a light sensing component array, or a camera for sensing. In addition, the processing unit 35 is also located within the cover 31, which can be combined with light. The sensing unit 33 is connected to each other, and the light sensing unit 33 is closer to the light emitting unit 32 to avoid being blocked by the processing unit 35, and the sensing signal generated by the sensing by the light sensing unit 33 can be transmitted to the processing unit 35 for performing. Analyze or transmit via a wireless transmission unit. In addition, the conductive unit 34 can pass through the path in the cover 31 or from the outer surface of the cover 31 to the light emitting unit 32. Here, the conductive unit 34 includes a conductive layer and a wire, wherein the conductive layer is disposed on the inner surface of the top of the cover 31. And the inner surface of the side portion, the wire is connected to the conductive layer and the light emitting unit 32.

FIG. 7 is a schematic diagram of an optical detecting device 4 according to a fourth embodiment of the present invention. The optical detecting device 4 includes a cover 41, a light emitting unit 42, a light sensing unit 43, and a conductive unit 44. The main difference from the first embodiment is that the light sensing unit 43 is located inside the cover 41, and the processing unit 45 is located outside the cover 41. Here, the light sensing unit 43 includes a light sensing element, a plurality of light sensing elements, or a light sensing element array as an example. The processing unit 45 transmits the driving signal through the conductive unit 44. The conductive unit 44 may include a conductive layer and a wire. The conductive layer is distributed on the inner surface of the top of the cover 41 and the inner surface of the side portion, and the conductive layer and the light emitting unit 42 are connected by wires. And a portion of the wire can be enclosed in the joint unit 47.

In summary, since the light-emitting unit is disposed in the cover body, the entire optical detecting device can be miniaturized to improve the convenience of detection and product competitiveness, and the driving signal is transmitted by the path of the outer surface of the cover or the internal path of the conductive unit. It is an innovative design to the light-emitting unit located inside the cover to drive its light. In addition, the present invention detects the tissue portion of the cover covered by the cover by the design of the cover. Thus, the optical detecting device is like a magnifying glass, and as the cover moves, different parts of the tissue can be detected and the user is provided differently. More intuitive and easy to use testing experience.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1 to 4. . . Optical detection device

11, 21, 31, 41. . . Cover

111. . . The outer surface

12, 22, 32, 42. . . Light unit

13, 23, 33, 43. . . Light sensing unit

131. . . Splitting section

132. . . Sensing department

14, 24, 34, 44. . . Conductive unit

15, 25, 35, 45. . . Processing unit

16, 26, 36, 46. . . Positioning unit

161 ~ 163, 261 ~ 263, 361 ~ 363, 461 ~ 463. . . Signal transmission end

17, 47. . . Link unit

171. . . Linking component

T‧‧‧ organization

1 is a schematic view of an optical detecting device according to a first embodiment of the present invention;

2 is a schematic diagram of splitting light by a beam splitting portion according to the present invention;

3 is a schematic diagram of an optical detecting device according to a first embodiment of the present invention having a positioning unit;

4 is a schematic diagram of an optical detecting device according to a first embodiment of the present invention connecting a cover body and a light emitting unit by a connecting unit;

Figure 5 is a schematic view of an optical detecting device according to a second embodiment of the present invention;

Figure 6 is a schematic view of an optical detecting device according to a third embodiment of the present invention;

Figure 7 is a schematic view of an optical detecting apparatus according to a fourth embodiment of the present invention.

1. . . Optical detection device

11. . . Cover

111. . . The outer surface

12. . . Light unit

13. . . Light sensing unit

14. . . Conductive unit

15. . . Processing unit

T. . . organization

Claims (13)

An optical detecting device for detecting a tissue, comprising: a cover; an illumination unit located in the cover body, emitting at least one wavelength of light into the tissue; and a light sensing unit sensing the emission from the tissue The light source generates a sensing signal; at least a portion of the conductive unit is disposed on an outer surface of the cover or disposed on an inner surface of the cover, and transmits a driving signal to the light emitting unit; and a positioning unit And having at least three signal transmission ends, wherein a distance between the signal transmission end and the light sensing unit is substantially fixed. The optical detecting device of claim 1, wherein the cover is a light blocking member. The optical detecting device of claim 1, wherein the cover has a through hole through which the conductive unit passes. The optical detecting device of claim 1, wherein the light emitting unit emits light having a specific wavelength band or emits light of a different wavelength. The optical detecting device according to claim 1, wherein the light sensing unit is located in the cover or embedded in the cover. The optical detecting device of claim 1, wherein the light sensing unit is located on an outer surface of the cover, and the outer surface is transparent. An optical detecting device according to claim 1, wherein the optical detecting device The light sensing unit comprises a light sensing element, a plurality of light sensing elements, or an array of light sensing elements. The optical detecting device of claim 1, wherein the light sensing unit comprises a light splitting portion and a sensing portion, wherein the light splitting portion divides the light emitted by the tissue into light of a plurality of wavelengths and transmits the light to the light source. Sensing section. The optical detecting device of claim 1, wherein the light sensing unit comprises a demodulator and a light sensing component, wherein the light bulb is demodulated and transmitted to the light emitted by the tissue Light sensing component. The optical detecting device of claim 1, wherein the conductive unit comprises a conductive layer, or an electrical conductor, or a wire. The optical detecting device of claim 1, wherein the conductive unit comprises a transparent conductive material. The optical detecting device of claim 1, further comprising: a processing unit located outside or within the cover, and transmitting the driving signal via the conductive unit to drive the light emitting unit. The optical detecting device according to claim 1, further comprising: a connecting unit coupled to the cover and the light emitting unit.