TWI675644B - Optical lithography device and optical lithography method - Google Patents

Abstract

The invention provides an optical developing device and an optical developing method. The optical developing device includes a processing unit, an infrared light source, a first imaging unit, a second imaging unit, and a projection unit. The processing unit operates the first camera unit to obtain a first image beam of the biological tissue. When the processing unit enables the infrared light source to illuminate the biological tissue, the processing unit operates the second camera unit to obtain a second image light beam. The projection unit, the first camera unit and the second camera unit are arranged coaxially. The processing unit generates the enhanced blood vessel image according to the first image light beam and the second image light beam, and projects the enhanced blood vessel image to the biological tissue by the projection unit.

Description

Optical developing device and optical developing method

The present invention relates to a developing technology, and more particularly, to an optical developing device and an optical developing method.

With the increasing demand for modern medical behaviors, it is important to know the position of arteriovenous vessels for arteriovenous injection or surgery. However, traditional arteriovenous imaging techniques usually use invasive injection of a developer to image. In addition, the general clinical instruments for identifying blood vessels are also limited to external subcutaneous veins, and they must also be used with intravenous injections. In other words, conventional angiography techniques cannot be conveniently and immediately applied to various types of surgery or medical behaviors. In view of this, how to develop a developing device that can conveniently and immediately provide a developing image of blood vessel distribution, solutions of several embodiments will be proposed below.

The invention provides an optical developing device and an optical developing method, which can conveniently and immediately provide a developing image of blood vessel distribution.

The optical developing device of the present invention includes a processing unit, an infrared light source, a first imaging unit, a second imaging unit, and a projection unit. The infrared light source is coupled to the processing unit. The first camera unit is coupled to the processing unit. The processing unit is configured to operate the first camera unit to obtain a first image beam of the biological tissue. The second camera unit is coupled to the processing unit. When the processing unit enables the infrared light source to illuminate the biological tissue, the processing unit operates the second camera unit to obtain a second image light beam. The projection unit is coupled to the processing unit. The projection unit, the first camera unit and the second camera unit are arranged coaxially. The processing unit generates the enhanced blood vessel image according to the first image light beam and the second image light beam, and projects the enhanced blood vessel image to the biological tissue by the projection unit.

In an embodiment of the present invention, a first wavelength of the first image light beam is selected from a visible light band. Arterial blood vessels and venous blood vessels of biological tissues have different extinction coefficients at the first wavelength.

In an embodiment of the present invention, the second wavelength of the second image light beam is selected from the infrared band. Arterial blood vessels and venous blood vessels of biological tissues have the same extinction coefficient at the second wavelength.

In an embodiment of the present invention, the processing unit obtains the blood vessel characteristic image data by subtracting the first image data corresponding to the first image light beam and the second image data corresponding to the second image light beam. The processing unit adjusts the blood vessel characteristic image data according to the weight parameter to obtain the adjusted blood vessel characteristic image data. The processing unit combines the adjusted blood vessel characteristic image data with the first image data to obtain an enhanced blood vessel image.

In an embodiment of the present invention, the optical developing device further includes a first beam splitter. The first beam splitter is disposed on the coaxial optical path. The first beam splitter is used for passing the first image light beam and the second image light beam with a wavelength of 600 nm or more, and reflecting other light beams with a wavelength less than 600 nm. The first beam splitter is further used to reflect the enhanced blood vessel image projected by the projection unit to the biological tissue.

In an embodiment of the present invention, the optical developing device further includes a second beam splitter and a first optical filter. The second beam splitter is disposed on the coaxial optical path. The second beam splitter is used for passing a second image light beam with a wavelength of more than 700 nm, and reflecting other light beams with a wavelength of less than 700 nm. The first optical filter is disposed between the second beam splitter and the first imaging unit. The first optical filter is used to pass a first image light beam with a wavelength of 680 nanometers, and filter out other light beams with a wavelength other than 680 nanometers.

In an embodiment of the present invention, the optical developing device further includes a light reflector and a second optical filter. The light reflector is disposed on the coaxial light path. The light reflector is used to reflect the second image light beam with a wavelength of more than 700 nm. The second optical filter is disposed between the light reflector and the second imaging unit. The second optical filter is used to pass a second image light beam with a wavelength of 808 nm, and filter out other light beams with a wavelength other than 808 nm.

In an embodiment of the present invention, the processing unit previously operates the projection unit to project a grid reference image, and captures the grid reference image through the first camera unit and the second camera unit, respectively, so that the processing units are compared. The grid reference image capture results of the first camera unit and the second camera unit are used to perform the coaxial correction operation of the first camera unit and the second camera unit.

In an embodiment of the present invention, the processing unit previously operates the projection unit to project a rectangular reference image, and captures the rectangular reference image through the first camera unit and the second camera unit, respectively, so that the processing unit compares with the first camera. The rectangular reference image capture results of the unit and the second camera unit to perform the keystone correction operation of the projection unit, the first camera unit and the second camera unit.

In an embodiment of the present invention, the processing unit previously operates the projection unit to project the polygon reference image onto the polygon correction sheet, and separately captures the polygon reference image through the first camera unit and the second camera unit, so that the processing unit borrows The offset correction operation of the projection unit, the first camera unit, and the second camera unit is performed by determining whether the polygon reference image and the polygon correction sheet completely overlap.

The optical development method of the present invention includes the following steps: obtaining a first image beam of biological tissue by operating a first imaging unit by a processing unit; illuminating biological tissue by enabling an infrared light source by the processing unit; and operating a second imaging unit to obtain a first Two image light beams; generating an enhanced blood vessel image by the processing unit according to the first image light beam and a second image light beam; and projecting the enhanced blood vessel image to a biological tissue by a projection unit.

In an embodiment of the present invention, the first wavelength of the first image light beam is selected from the visible light band, and the arterial vessels and venous vessels of biological tissues have different extinction coefficients at the first wavelength.

In an embodiment of the present invention, the second wavelength of the second image light beam is selected from the infrared band. Arterial blood vessels and venous blood vessels of biological tissues have the same extinction coefficient at the second wavelength.

In an embodiment of the present invention, the step of generating an enhanced blood vessel image by the processing unit according to the first image light beam and the second image light beam includes: processing the first image corresponding to the first image light beam by the processing unit. The blood vessel characteristic image data is obtained by subtracting the data from the second image data corresponding to the second image beam; the blood vessel characteristic image data is adjusted by the processing unit according to the weight parameter to obtain the adjusted blood vessel characteristic image data; and by the processing unit The adjusted blood vessel characteristic image data is combined with the first image data to obtain an enhanced blood vessel image.

In an embodiment of the present invention, the above-mentioned optical development method further includes: projecting the grid reference image by operating the projection unit in advance by the processing unit; capturing the grid reference image through the first camera unit and the second camera unit, respectively; And the processing unit compares the grid reference image capture results of the first camera unit and the second camera unit to perform the coaxial correction operation of the first camera unit and the second camera unit.

In an embodiment of the present invention, the above-mentioned optical development method further includes: projecting a rectangular reference image by operating the projection unit in advance by the processing unit; capturing the rectangular reference image through the first camera unit and the second camera unit respectively; and borrowing The processing unit compares the rectangular reference image capture results of the first camera unit and the second camera unit to perform the keystone correction operation of the projection unit, the first camera unit, and the second camera unit.

In an embodiment of the present invention, the above-mentioned optical development method further includes: projecting the polygon reference image onto the polygon correction sheet by operating the projection unit in advance by the processing unit; and respectively acquiring the polygon through the first camera unit and the second camera unit A reference image; and determining, by the processing unit, whether the polygon reference image and the polygon correction sheet completely overlap to perform the offset correction operation of the projection unit, the first camera unit, and the second camera unit.

Based on the above, the optical developing device and the optical developing method of the present invention can capture multiple biological tissue images corresponding to different wavelengths in real time by using multiple camera units, and image the multiple biological tissue images of different wavelengths. Processing to obtain blood vessel images in real time. Therefore, the optical developing device and the optical developing method of the present invention can instantly project a blood vessel image onto a biological tissue to provide a convenient blood vessel developing effect.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

In order to make the content of the present invention easier to understand, the following specific embodiments are examples based on which the present invention can be implemented. In addition, wherever possible, the same reference numbers are used in the drawings and embodiments to refer to the same or similar components.

FIG. 1 is a functional circuit diagram of an optical developing device according to an embodiment of the present invention. 1, the optical developing device 100 includes a processing unit 110, a first imaging unit 120, a second imaging unit 130, a projection unit 140, and an infrared light source 150. The processing unit 110 is coupled to the first camera unit 120, the second camera unit 130, the projection unit 140, and the infrared light source 150. In this embodiment, the optical developing device 100 is configured to sample an image of a biological tissue, and project a blood vessel image corresponding to the biological tissue to a surface of the biological tissue according to the image sampling result. In other words, the optical developing device 100 of this embodiment can be used to instantaneously sample the surface image of biological tissue, and correspondingly develop, for example, the blood vessel distribution between the surface of the biological tissue and a depth of 5 millimeters (mm) to project It allows medical personnel to obtain the blood vessel distribution information on the surface of biological tissues in real time. In addition, the biological tissues described in the embodiments of the present invention may refer to, for example, an internal organ of a human body or a skin surface, and the present invention is not limited thereto. The optical developing device 100 of the present invention can be applied to the development of surface blood vessels of various organs during surgery or the development of general arterial and intravenous injections.

In detail, first, the optical developing device 100 obtains a first image beam of biological tissue through the first imaging unit 120, and obtains a first blood vessel image according to the first image beam through the processing unit 110. Next, the optical developing device 100 enables the infrared light source 150 to illuminate the biological tissue by infrared rays, and obtains the second image light beam of the biological tissue through the second camera unit 130. The optical developing device 100 obtains a second blood vessel image through the processing unit 110 according to the second image light beam. In this embodiment, the first blood vessel image refers to the first blood vessel image after the surface of the biological tissue is irradiated with visible light, and the second blood vessel image refers to the second blood vessel image after the surface of the biological tissue is irradiated with infrared light. In this embodiment, the optical developing device 100 performs image processing and calculations on the first blood vessel image and the second blood vessel image by the processing unit 110 to generate an enhanced blood vessel image correspondingly, and projects the enhanced image by the projection unit 140. Image of blood vessels to biological tissue.

In this embodiment, the processing unit 110 includes, for example, a central processing unit (CPU), an image signal processor (ISP), a system on chip (SOC), or other programmable General purpose or special purpose microprocessor (microprocessor), digital signal processor (DSP), programmable controller, application specific integrated circuit (ASIC), programmable logic Programmable Logic Device (PLD), other similar processing devices, or a combination of these devices. Moreover, in an embodiment, the processing unit 110 may be further coupled to a memory module. The memory module may store, for example, a related operation module and image data used to implement the image analysis of the present invention, and the present invention is not limited thereto.

In addition, in this embodiment, the first camera unit 120 and the second camera unit 130 include, for example, a Charge Coupled Device (CCD) sensor or a Complementary Metal Oxide Semiconductor (CMOS) sensor. Image capture components such as measuring devices. In this embodiment, the projection unit 140 includes, for example, a projector. In this embodiment, the infrared light source 150 is used to project infrared light having a wavelength of 800 nanometers (nm) to 950 nanometers, for example.

FIG. 2 is a schematic structural diagram of an optical developing device according to an embodiment of the invention. FIG. 3 is a graph showing the relationship between extinction coefficients and wavelengths of arteries and veins according to an embodiment of the present invention. FIG. 4 is a graph showing a relationship between an intensity of a blood vessel image and a spatial frequency according to an embodiment of the present invention. 5A to 5D are schematic diagrams of multiple blood vessel images according to an embodiment of the present invention, respectively. 2 to 5D, the optical developing device 200 includes a processing unit 210, a first camera unit 220, a second camera unit 230, a projection unit 240, an infrared light source 250, a first beam splitter 261, a second beam splitter 262, and light reflection. Filter 263, first optical filter 264, and second optical filter 265. The processing unit 210 is coupled to the first camera unit 220, the second camera unit 230, the projection unit 240, and the infrared light source 250. It is worth noting that, in this embodiment, the projection unit 240, the first camera unit 220, and the second camera unit 230 are coaxially arranged to effectively reduce the difference between the imaging distance and the projection distance, and reduce the size of the projected blood vessel image and Error between true vessel size.

In this embodiment, the first beam splitter 261, the second beam splitter 262, and the light reflector 263 are disposed on a coaxial optical path. The first beam splitter 261 is used to pass a light beam having a wavelength of 600 nm or more and reflect other light beams having a wavelength of less than 600 nm. The second beam splitter 262 is used to pass a light beam having a wavelength of more than 700 nm and to reflect other light beams having a wavelength of less than 700 nm. The first optical filter 264 is disposed between the second beam splitter 262 and the first imaging unit 220. The first optical filter 264 is used to pass a first image light beam with a wavelength of 680 nanometers, and filter out other light beams with a wavelength other than 680 nanometers. The light reflector 263 is used to reflect a light beam having a wavelength of 700 nm or more. The second optical filter 265 is provided between the light reflector 263 and the second imaging unit 230. The second optical filter 265 is used to pass a second image light beam with a wavelength of 808 nm, and filter out other light beams with a wavelength other than 808 nm.

Based on the above-mentioned optical architecture, when the optical developing device 200 performs a developing operation, first, the optical developing device 200 acquires a first image light beam of an image of the surface of the biological tissue BS illuminated by visible light through the first imaging unit 220. The wavelength of the first image light beam is selected from the visible light band (380 nm to 780 nm), which may be, for example, 680 nm. In FIG. 3, a curve 301 is a change indicating the extinction coefficient of a vein, and a curve 302 is a change indicating the extinction coefficient of an artery. In this regard, as shown in the curves 301 and 302 shown in FIG. 3, the arterial blood vessels and venous blood vessels of the biological tissue BS have different extinction coefficients at a wavelength of 680 nanometers (such as the position of the index 303), so as shown in FIG. 5A Vascular image 510. It should be noted that the image intensity of venous vessels is higher than that of arterial vessels at a wavelength of 680 nm.

Next, the optical developing device 200 enables the infrared light source 250 to project infrared light to the biological tissue BS, and obtains a second image light beam of the image of the surface of the biological tissue BS irradiated with infrared light through the second camera unit 230. The wavelength of the second image beam is selected from the infrared band (800 nm to 950 nm), which may be, for example, 808 nm. In this regard, as shown in the curves 301 and 302 shown in FIG. 3, since the arterial blood vessels and venous blood vessels of the biological tissue BS have the same extinction coefficient at a wavelength of 808 nanometers (such as the position of the index 304), FIG. Vascular image 520. It should be noted that the image intensity of venous blood vessels is equal to or similar to that of arterial blood vessels at a wavelength of 808 nm.

Then, the optical developing device 200 performs image processing and calculation through the processing unit 210. Referring to FIG. 4, the optical developing device 200 transmits the first image data S _D corresponding to the first image beam received by the first camera unit 220 and the second image data corresponding to the second image beam received by the second camera unit 230 through the processing unit 210. S _us' to obtain the blood vessel characteristics after subtraction image data S _D -S _us', wherein the blood vessel characteristics image data S _D -S _us' may correspond to the blood vessel image 530 as shown in FIG. 5C. The processing unit 210 may adjust the blood vessel characteristic image data S _D -S _us' according to a preset weight parameter to obtain the adjusted blood vessel characteristic image data. Furthermore, the processing unit 210 combines the adjusted blood vessel characteristic image data with the first image data to obtain an enhanced blood vessel image 540 as shown in FIG. 5D. Therefore, the optical developing device 200 can project the enhanced blood vessel image 540 to the biological tissue BS through the projection unit 140. The image light beam of the enhanced blood vessel image 540 projected by the projection unit 140 may be, for example, a visible light beam having a wavelength of less than 600 nm.

That is, the optical embodiment of the developing device 200 according to the present embodiment is to obtain a difference image between the original image (first image data S _D) and the unsharp image (second image data S _us') (wherein the blood vessel image data S _D -S _{us '} ), and the difference image is enhanced by the enhancement coefficient and then merged into the original image (the first image data S _D ) to generate an enhanced blood vessel image S _F. From another point of view, since the vein image of an original image (a first image data S _D) is compared to the image among the arteries clear, it is 200 after the image processing by the above-described developing apparatus according to the present embodiment of the optical embodiment, can be significantly To increase the image intensity of arterial blood vessels. Further, the image and the original image (first image data S _D) merging the adjusted optical developing device 200 of this embodiment, in order to obtain the movement, all of the clear vein image enhancement angiographic S _F. According to this, the optical developing device 200 of this embodiment can effectively develop the surface blood vessel distribution of the biological tissue BS.

FIG. 6 is a flowchart of an optical developing method according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 6, the optical developing method of this embodiment can be applied to at least the optical developing device 100 of the embodiment of FIG. 1, so that the optical developing device 100 can perform the following steps S610 to S660. In step S610, the processing unit 110 operates the first camera unit 120 to obtain a first image beam of the biological tissue. In step S620, the processing unit 110 enables the infrared light source to illuminate the biological tissue, and operates the second camera unit 130 to obtain a second image light beam. In step S630. The processing unit 110 subtracts the first image data corresponding to the first image beam and the second image data corresponding to the second image beam to obtain blood vessel characteristic image data. In step S640, the processing unit 110 adjusts the blood vessel characteristic image data according to the weight parameter to obtain the adjusted blood vessel characteristic image data. In step S650, the processing unit 110 combines the adjusted blood vessel characteristic image data with the first image data to obtain an enhanced blood vessel image. In step S660, the projection unit 140 projects the enhanced blood vessel image onto the biological tissue. Therefore, the optical development method of this embodiment can effectively perform accurate development of the surface blood vessel distribution of the biological tissue.

In addition, regarding other circuit element features, specific technical details, and related implementations of the optical developing device 100 of this embodiment, reference may be made to the content of the embodiments of FIG. 1 to FIG. 5D described above, and sufficient teachings, suggestions, and implementation descriptions are obtained. More details.

7A to 7C are schematic diagrams of a plurality of grid reference images according to an embodiment of the present invention, respectively. Referring to FIG. 1 and FIGS. 7A to 7C, the processing unit 110 may operate the projection unit 140 in advance to project a grid reference image 710 as shown in FIG. 7A, and capture the network through the first camera unit 120 and the second camera unit 130, respectively. Grid reference image 710. In this embodiment, the processing unit 110 may compare the grid reference image capture results of the first camera unit 120 and the second camera unit 130 to perform the coaxial calibration operation of the first camera unit 120 and the second camera unit 130.

For example, if the result obtained by the first camera unit 120 or the second camera unit 130 is as shown in the grid reference image 720 of FIG. 7B, it means that the first camera unit 120 or the second camera unit 130 has a negative radial deformation (negative radial distortion). Therefore, the first camera unit 120 or the second camera unit 130 can perform corresponding camera lens adjustment accordingly. In contrast, if the result obtained by the first camera unit 120 or the second camera unit 130 is as shown in the grid reference image 730 of FIG. 7C, it means that the first camera unit 120 or the second camera unit 130 has positive radial deformation. distortion). Similarly, the first camera unit 120 or the second camera unit 130 can perform corresponding camera lens adjustment accordingly.

8A to 8E are schematic diagrams of a plurality of rectangular reference images according to an embodiment of the present invention, respectively. Referring to FIG. 1 and FIGS. 8A to 8E, the processing unit 110 may operate the projection unit 140 in advance to project a rectangular reference image 810, and capture the rectangular reference image 810 through the first camera unit 120 and the second camera unit 130, respectively. In this embodiment, the processing unit 110 may compare the rectangular reference image capture results of the first camera unit 120 and the second camera unit 130 to perform keystone correction of the projection unit 140, the first camera unit 110, and the second camera unit 120. operating.

For example, if the results obtained by the first camera unit 120 or the second camera unit 130 are rectangular reference images 820 and 830 shown in FIG. 8B or FIG. 8C, the rectangular reference image 811 and the rectangular reference in the rectangular reference image 810 are compared. The rectangular figure 821 of the image 820 or the rectangular figure 831 of the rectangular reference image 830 indicates that the first camera unit 120 or the second camera unit 130 has vertical trapezium distortion. Therefore, the first camera unit 120, the second camera unit 130, and the projection unit 140 can perform corresponding camera lens adjustment or projection lens adjustment accordingly. In contrast, if the results obtained by the first camera unit 120 or the second camera unit 130 are rectangular reference images 840 and 850 shown in FIG. 8D or FIG. 8E, the rectangular figure 811 and the rectangular reference image in the rectangular reference image 810 are compared by comparison. A rectangular figure 841 of 840 or a rectangular figure 851 of a rectangular reference image 850 indicates that the first camera unit 120 or the second camera unit 130 has horizontal trapezium distortion. Similarly, the first camera unit 120, the second camera unit 130, and the projection unit 140 can perform corresponding camera lens adjustment or projection lens adjustment accordingly.

FIG. 9 is a schematic diagram of projecting a polygon reference image onto a polygon correction sheet according to an embodiment of the present invention. Referring to FIGS. 1 and 9, the processing unit 110 may operate the projection unit 140 in advance to project the polygon reference image 920 onto the polygon correction sheet 910. In this embodiment, the processing unit 110 can capture the polygon reference image 920 through the first camera unit 120 and the second camera unit 130, respectively. The processing unit 110 can determine whether the imaging range of the first camera unit 120 and the second camera unit 130 is consistent with the projection area of the projection unit 140 by determining whether the polygon reference image 920 and the polygon correction sheet 910 completely overlap. Therefore, the first camera unit 120, the second camera unit 130, and the projection unit 140 can perform corresponding camera lens adjustment or projection lens adjustment accordingly.

In summary, the optical developing device and the optical developing method of the present invention can obtain a first blood vessel image with a different extinction coefficient wavelength and a second blood vessel image with the same extinction coefficient in real time, and the first blood vessel image Perform image processing with the second blood vessel image to obtain the enhanced blood vessel image and project it to the biological tissue in real time. In addition, the optical developing device can perform a calibration operation of the imaging lens and the projection lens in advance. Therefore, the optical developing device and the optical developing method of the present invention can provide an immediate and accurate blood vessel developing effect.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

100, 200‧‧‧ optical developing device

110, 210‧‧‧ processing units

120, 220‧‧‧ the first camera unit

130, 230‧‧‧Second camera unit

140, 240‧‧‧ projection unit

150, 250‧‧‧ infrared light source

261, 262‧‧‧ splitter

263‧‧‧light reflector

264, 265‧‧‧Optical Filter

301, 302‧‧‧ curves

303, 304‧‧‧ indicators

BS‧‧‧Biological Tissue

S _F 、 S _D 、 S _{us '} 、 S _D -S _us' ‧‧‧Image data

510, 520, 530, 540‧‧‧ vascular images

S610 ~ S660‧‧‧step

710, 720, 730‧‧‧Grid reference images

810, 820, 830, 840, 850‧‧‧ rectangular reference images

811, 821, 831, 841, 851‧‧‧ rectangular shape

910‧‧‧Polygon Correction Sheet

920‧‧‧Polygonal reference image

FIG. 1 is a functional circuit diagram of an optical developing device according to an embodiment of the present invention. FIG. 2 is a schematic structural diagram of an optical developing device according to an embodiment of the invention. FIG. 3 is a graph showing the relationship between extinction coefficients and wavelengths of arteries and veins according to an embodiment of the present invention. FIG. 4 is a graph showing a relationship between an intensity of a blood vessel image and a spatial frequency according to an embodiment of the present invention. 5A to 5D are schematic diagrams of multiple blood vessel images according to an embodiment of the present invention, respectively. FIG. 6 is a flowchart of an optical developing method according to an embodiment of the present invention. 7A to 7C are schematic diagrams of a plurality of grid reference images according to an embodiment of the present invention, respectively. 8A to 8E are schematic diagrams of a plurality of rectangular reference images according to an embodiment of the present invention, respectively. FIG. 9 is a schematic diagram of projecting a polygon reference image onto a polygon correction sheet according to an embodiment of the present invention.

Claims (14)

An optical developing device includes: a processing unit; an infrared light source coupled to the processing unit; a first camera unit coupled to the processing unit, wherein the processing unit is used to operate the first camera unit to obtain a biological tissue; A first image beam; a second camera unit coupled to the processing unit, wherein when the processing unit enables the infrared light source to illuminate the biological tissue, the processing unit operates the second camera unit to obtain a A second image beam; and a projection unit coupled to the processing unit, and the projection unit, the first camera unit and the second camera unit are coaxially arranged, wherein the processing unit is based on the first image beam and the second The image beam generates an enhanced blood vessel image, and the enhanced blood vessel image is projected to the biological tissue by the projection unit. The optical developing device according to item 1 of the patent application range, wherein a first wavelength of the first image light beam is selected from a visible light band, and an arterial blood vessel and a venous blood vessel of the biological tissue are different at the first wavelength. Extinction coefficient. The optical developing device according to item 2 of the patent application range, wherein a second wavelength of the second image light beam is selected from an infrared band, and the arterial blood vessel and the venous blood vessel of the biological tissue have the same at the second wavelength Extinction coefficient. The optical developing device according to item 1 of the scope of patent application, wherein the processing unit obtains a blood vessel by subtracting a first image data corresponding to the first image beam from a second image data corresponding to the second image beam Feature image data, and the processing unit adjusts the vascular feature image data according to a weight parameter to obtain an adjusted vascular feature image data, wherein the processing unit combines the adjusted vascular feature image data with the first image data Combine to obtain the enhanced image of the blood vessel. The optical developing device according to item 1 of the scope of patent application, further comprising: a first beam splitter arranged on a coaxial optical path for making the first image beam and the second image having a wavelength of 600 nm or more The light beam passes through and reflects other light beams with a wavelength lower than 600 nm. The first beam splitter is further configured to reflect the enhanced blood vessel image projected by the projection unit to the biological tissue. The optical developing device according to item 1 of the scope of patent application, further comprising: a second beam splitter disposed on a coaxial optical path for passing the second image light beam having a wavelength of 700 nm or more and reflecting the wavelength Other light beams below 700 nm; and a first optical filter disposed between the second beam splitter and the first camera unit to pass the first image light beam with a wavelength of 680 nm, and Filter out other beams with wavelengths other than 680 nm. The optical developing device according to item 1 of the scope of patent application, further comprising: a light reflector disposed on a coaxial optical path to reflect the second image light beam with a wavelength of more than 700 nm; and a second light A filter is disposed between the light reflector and the second camera unit to pass the second image light beam with a wavelength of 808 nanometers and filter out other light beams with a wavelength other than 808 nanometers. An optical development method includes: obtaining a first image beam of a biological tissue by a processing unit operating a first camera unit; enabling an infrared light source to illuminate the biological tissue by the processing unit, and operating a second The camera unit obtains a second image beam of the biological tissue; generates an enhanced blood vessel image by the processing unit according to the first image beam and the second image beam; and projects the enhanced blood vessel image by a projection unit. Vessel images to the biological tissue. The optical development method according to item 8 of the scope of patent application, wherein a first wavelength of the first image light beam is selected from a visible light band, and an arterial vessel and a venous vessel of the biological tissue are different at the first wavelength. Extinction coefficient. The optical development method according to item 8 of the scope of patent application, wherein a second wavelength of the second image beam is selected from an infrared band, and the arterial blood vessel and the venous blood vessel of the biological tissue have the same at the second wavelength Extinction coefficient. The optical development method according to item 8 of the scope of patent application, wherein the step of generating the enhanced blood vessel image by the processing unit according to the first image light beam and the second image light beam includes: by the processing unit, A first image data corresponding to the first image beam and a second image data corresponding to the second image beam are subtracted to obtain a blood vessel characteristic image data; the processing unit adjusts the blood vessel characteristic image according to a weight parameter Data to obtain an adjusted blood vessel feature image data; and the processing unit combines the adjusted blood vessel feature image data with the first image data to obtain the enhanced blood vessel image. The optical developing method according to item 8 of the scope of patent application, further comprising: projecting a grid reference image by operating the projection unit in advance by the processing unit; capturing through the first camera unit and the second camera unit respectively The grid reference image; and comparing the grid reference image capture results of the first camera unit and the second camera unit by the processing unit to perform a coaxial operation of the first camera unit and the second camera unit Correction operation. The optical development method according to item 8 of the scope of patent application, further comprising: projecting a rectangular reference image by operating the projection unit in advance by the processing unit; capturing the respective through the first camera unit and the second camera unit A rectangular reference image; and comparing the rectangular reference image capture results of the first camera unit and the second camera unit by the processing unit to perform one of the projection unit, the first camera unit, and the second camera unit. Keystone operation. The optical development method according to item 8 of the scope of patent application, further comprising: projecting a polygon reference image to a polygon correction sheet by operating the projection unit in advance by the processing unit; passing the first camera unit and the second camera Each unit captures the polygon reference image; and performs an offset correction of the projection unit, the first camera unit, and the second camera unit by the processing unit to determine whether the polygon reference image and the polygon correction piece completely overlap. operating.