A method of fabricating a three-dimensional facial shape optical fiber light waveguide device

Abstract

The application relates to a manufacturing method of a three-dimensional face shape optical fiber light wave guide device, belonging to the technical field of new materials, optical devices and simulation display. Vertical plastic optical fibers are sequentially arranged, the adjacent relationship of the adjacent optical fibers at the light-in end and the light-out end is the same, the optical fiber skin is bonded through heating or the adjacent relationship between the optical fiber skins is fixed by adding a solidifiable bonding glue, the optical fiber light wave guide material blank is finely processed, and the optical fiber light wave guide device profile with the plane or inner cylindrical surface as the light-in surface shape and the non-face shape three-dimensional shape as the light-out surface shape is processed; the surface treatment of the optical fiber light wave guide device profile includes but is not limited to surface polishing, surface optical structure adjustment and surface film covering, and the face shape optical fiber light wave guide device with the surface smoothness, surface light emitting direction and touch feeling meeting the design requirements is manufactured. The method has the advantages that high simulation degree in vision is realized, and the image "folding mark" or "wave" is not caused in vision when dynamic images are displayed.

Description

Technical Field

[0001] This invention belongs to the fields of new optical materials, optical device forming processes, and simulation display technology. It specifically proposes a manufacturing method for a three-dimensional facial shape fiber optic waveguide device. The device is an imaging hardware for three-dimensional surface display and can be used for dynamic image display of three-dimensional facial expressions in companion interactive robots, bionic robots, simulated humanoid interactive carriers, as well as AI toys, plush toys, etc. Background Technology

[0002] Current LED, LCD, OLED, and Micro-LED displays cannot achieve free-form stereoscopic displays. Achieving stereoscopic displays through projection and a stereoscopic screen requires not only multiple front-mounted projectors with edge-blending images but also a stereoscopic screen itself. Most importantly, front-mounted projectors are greatly affected by ambient light and cannot have obstructions between the projection and the screen. Two-dimensional cannot change three-dimensional; flat displays can only be mounted on walls, and curved or wavy surfaces cannot arbitrarily alter three-dimensional scenes. Three-dimensional can change three-dimensional; only true three-dimensional displays can alter the three-dimensional spatial view. From three comes all things; only new display products that achieve true three-dimensional display of any shape can freely change the world and make it more beautiful.

[0003] Therefore, there is an urgent need for a medium that can change the shape of planar or cylindrical displays and transform planar or cylindrical images into true three-dimensional displays, enabling current displays to achieve three-dimensional surface displays. This medium is the fiber optic waveguide device. Combining a current display with a fiber optic waveguide device whose light-emitting surface is three-dimensional can not only realize displays with three-dimensional facial shapes, but also displays with any three-dimensional surface. Summary of the Invention

[0004] The purpose of this invention is to provide a method for fabricating a three-dimensional facial-shaped fiber optic waveguide device, which solves the problem that current companion interactive robots, bionic robots, simulated humanoid interactive carriers, AI toys, plush toys, etc., cannot present rich dynamic facial expressions in a three-dimensional form.

[0005] This invention can change the shape of planar or cylindrical displays and transform planar or cylindrical images into a medium for true three-dimensional surface display, helping current displays achieve three-dimensional surface display. This medium is an optical fiber waveguide device. The steps of this optical fiber waveguide device are as follows: First, form the fiber optic waveguide material blank 1. Based on the length and diameter of the fiber optic waveguide device 3 required for implementation, select a matching fiber optic waveguide 11. The length range of the fiber optic waveguide 11 selected by thermoforming is: the thickest thickness (mm) of the fiber optic waveguide device profile 2 × 1.2 + 10~30mm. The diameter range of the selected fiber optic waveguide 11 is: for the close arrangement, the diameter range of the fiber optic waveguide 11 selected by at least three diameters is the pixel pitch of the display module × (0.33~1.414), and for the matrix arrangement, the diameter of the fiber optic waveguide 11 selected by the pixel pitch of the display module × 1 - 0.02mm. Optical fibers 11 are arranged sequentially in the forming mold 12, and the adjacent optical fibers 11 are arranged in the same adjacent relationship at the light input end and the light output end. The optical fiber sheath is melted and bonded by heating the forming mold 12 and the optical fibers 11 inside, or by injecting liquid curable adhesive between the optical fiber sheaths, thereby fixing the adjacent relationship between the optical fibers 11, and making a one-time formed optical fiber waveguide material blank 1. Its shape includes, but is not limited to, cuboid, cylinder, trapezoid, and irregular shape (or irregular shape). The one-time formed optical fiber waveguide material blank 1 can also be placed in the thermoforming mold 13 for thermoforming to make the optical fiber waveguide material blank 1 with the inner optical fiber head pointing to be perpendicular to the tangent direction of its three-dimensional light output surface curve. Secondly, a facial-shaped fiber optic waveguide device profile 2 is manufactured. According to the designed three-dimensional facial shape, the fiber optic waveguide material blank 1 is precision-machined. Its light-incident surface is machined into a planar shape (which can be adapted to a flat display module) or an inner cylindrical shape (which can be adapted to a curved display module), and its light-exit surface is machined into the designed three-dimensional facial shape.

[0006] Next, a face-shaped fiber optic waveguide device 3 is fabricated. The face-shaped fiber optic waveguide device profile 2 is surface-polished. Then, an extended viewing angle layer 31 and an anti-reflection layer 32 are deposited on the light-emitting surface of the face-shaped fiber optic waveguide device profile 2 to fabricate the face-shaped fiber optic waveguide device 3. For devices requiring simulated tactile sensation, a transparent tactile film 33 can be first pasted or coated on the surface of the face-shaped fiber optic waveguide device profile 2. Then, an extended viewing angle layer 31 and an anti-reflection layer 32 can be deposited on the tactile film 33. Alternatively, the extended viewing angle layer 31, the anti-reflection layer 32, and the tactile film 33 can be made into a whole and then pasted onto the light-emitting surface of the face-shaped fiber optic waveguide device profile 2.

[0007] The adjacent relationship between the optical fibers 11 in the optical fiber waveguide material blank 1 is consistent on the light-incident surface and the light-outcident surface, and the optical fibers 11 are bonded or fixed together. Its shape includes but is not limited to cuboid, cylinder, trapezoid, and irregular shape (or irregular shape). The forming thickness is reserved with a processing allowance. The thickness range of the optical fiber waveguide material blank 1 formed by thermoforming is: the maximum thickness (mm) of the face-shaped optical fiber waveguide device profile 2 + 10~30mm, with the reserved 10~30mm being the processing allowance. The thickness range of the optical fiber waveguide material blank 1 formed by bonding is: the maximum thickness of the face-shaped optical fiber waveguide device profile 2 + 5~10mm, with the reserved 5~10mm being the processing allowance.

[0008] Furthermore, the shape of the forming mold 12 for the optical fiber waveguide material blank 1 is designed according to the required shape of the optical fiber waveguide material blank 1, and the material of the forming mold 12 is determined according to the bonding method selected between the optical fibers 11, including but not limited to forming molds made of metal materials, forming molds made of non-metal materials, and forming molds made of composite materials. When using a heat-forming method, the inner cavity dimensions of the forming mold 12 are: length or height equal to the designed length or height of the fiber optic waveguide material blank 1 + length or height design dimension × (glass transition temperature of fiber core layer - 25℃) × thermal expansion coefficient of fiber core layer (the operating temperature of a three-dimensional facial-shaped fiber optic waveguide device is set to 25℃), and depth equal to the length of the fiber 11 arranged inside, i.e.: maximum thickness of facial-shaped fiber optic waveguide device profile 2 × 1.2 + 10~30mm; when using an adhesive method, the inner cavity dimensions of the forming mold 12 are: length or height equal to the designed length or height of the fiber optic waveguide material blank 1, and depth equal to the length of the fiber 11 arranged inside, i.e.: maximum thickness of facial-shaped fiber optic waveguide device profile 2 + 5~10mm.

[0009] Furthermore, the forming method of the optical fiber waveguide material blank 1 includes, but is not limited to: placing the forming mold 12 with the optical fibers 11 arranged in the cavity in a heat preservation box 14 and heating it to raise the temperature of the fiber sheath in the forming mold to its glass transition temperature +10~45℃ and keeping it at that temperature for a time equal to the length (cm) of the optical fiber 11 × 0.5~1 hour / cm; relying on the thermal expansion of the optical fiber 11 and the self-adhesive force of the optical fiber sheath after glass transition or melting and then curing, the optical fibers 11 in the forming mold 12 are bonded together; injecting a liquid curable optical fiber adhesive 10 with a refractive index not greater than the refractive index of the optical fiber sheath into the gaps of the optical fibers 11 arranged in the forming mold; after the optical fiber adhesive 10 cures, the optical fibers 11 in the forming mold 12 are bonded together.

[0010] Furthermore, the thermoforming of the fiber optic waveguide material blank 1 involves placing the formed fiber optic waveguide material blank 1 into a thermoforming mold 13, and then placing the thermoforming mold 13 into a temperature-adjustable insulation box 14. The temperature of the insulation box 14 is adjusted to the glass transition temperature of the fiber optic sheath +10~35℃ and kept at that temperature for a duration of 0.4~0.8 hours / cm equal to the thickness (cm) of the fiber optic waveguide material blank 1. By utilizing the thermal expansion characteristics of the fiber optic waveguide material blank 11 and the flowability of the inner fiber 11 material after glass transition, the shape of the light-emitting surface of the fiber optic waveguide material blank 1 is made close to the outline shape of the light-emitting surface of the fiber optic waveguide device profile 2, and the inner fiber head is made to point towards the tangent direction of its three-dimensional light-emitting surface curve, thereby achieving thermoforming of the shape of the formed fiber optic waveguide material blank 1 and adjustment of the surface light emission direction.

[0011] Furthermore, the shape of the thermoplastic mold 13 for the fiber optic waveguide material blank 1 includes, but is not limited to, the shape of the face-shaped fiber optic waveguide device 3, a female mold shape; and an open oven shape for directional (or configurable heating) heating. When using the thermoplastic mold 13 with the female mold shape of the face-shaped fiber optic waveguide device 3, the one-time-molded fiber optic waveguide material blank 1 needs to be processed into the outline shape of the face-shaped fiber optic waveguide device 3 and placed in the thermoplastic mold 13. The direction of the fiber optic head inside is changed by thermoplasticization, and the direction of the fiber optic head approaches the direction perpendicular to the tangent of its three-dimensional light-emitting surface curve. When using the thermoplastic mold 13 with the shape of an open oven for directional heating, either the one-time-molded fiber optic waveguide material blank 1 or the fiber optic waveguide material blank 1 processed into the outline shape of the face-shaped fiber optic waveguide device 3 can be used.

[0012] The facial-shaped fiber optic waveguide device profile 2 is made from fiber optic waveguide material blank 1 through precision machining. Its light-incident surface is machined into a planar or inner cylindrical surface, and its light-exit surface shape includes, but is not limited to, the simulated three-dimensional shape of a human face, a doll's face, eyes, or any arbitrary three-dimensional shape. In the area where dynamic images are displayed, the uneven surface is non-representational (or the surface three-dimensional shape deviates from the specific shape of the simulated object, only showing the uneven shape of its surface), and the transitions between the uneven surfaces are smooth arc transitions, so that the surface does not cause any damage when displaying dynamic images. Visual image creases); in the area where it presents a static image, the uneven surface is figurative (or exactly the same as the three-dimensional shape of the surface of the simulated object, a 1:1 or proportional replica of the three-dimensional shape of the surface of the simulated object) or non-figurative; the shape of the light-incident or image-incident surface of the face-shaped fiber optic waveguide device profile 2 is a shape that can be tightly fitted with the display surface of the display module, and the processing precision of the face-shaped fiber optic waveguide device profile 2 can make the fitting gap between its light-incident surface and the display surface of the display module smaller than the minimum diameter of the optical fiber in the face-shaped fiber optic waveguide device profile 2. Preferably, the dimensional tolerance of the facial-shaped fiber optic waveguide device profile 2 is a positive tolerance less than the radius of the fiber 11 inside the fiber optic waveguide material blank 1, with a maximum of +0.5mm, and the minimum radius of curvature of the surface unevenness in the non-image area of ​​its light-emitting surface is greater than 2mm.

[0013] The aforementioned facial-shaped fiber optic waveguide device 3 is a waveguide device that can guide the displayed image from the image input surface or light input surface of the display module to the display surface or light output surface, and present the facial expression of the simulated object with high fidelity. It is composed of, but is not limited to, a facial-shaped fiber optic waveguide device profile 2, an extended viewing angle layer 31, and an anti-reflection layer 32. For applications requiring simulated tactile feedback, a tactile film 33 is also required. For this purpose, the facial-shaped fiber optic waveguide device profile 2 needs to undergo surface treatment. The implementation steps include, but are not limited to: first, surface polishing treatment of facial-shaped fiber optic waveguide device profiles with substandard processing smoothness or surface roughness; second, treatment of facial-shaped fiber optic waveguide device profiles with insufficient viewing angle and anti-reflection. The face-shaped fiber optic waveguide device profile 2 has an extended viewing angle layer 31 and an anti-reflection layer 32 coated on its light-emitting surface. Furthermore, for face-shaped fiber optic waveguide devices 3 with tactile requirements, a transparent tactile film 33 can be first attached to the surface of the face-shaped fiber optic waveguide device profile 2. The thickness of the tactile film 33 has a negligible impact on the three-dimensional shape of the face-shaped fiber optic waveguide device profile 2. Then, an extended viewing angle layer 31 and an anti-reflection layer 32 are coated on the tactile film 33, or the extended viewing angle layer 31, the anti-reflection layer 32, and the tactile film 33 are made into a single composite layer, which is then attached to the light-emitting surface of the face-shaped fiber optic waveguide device profile 2.

[0014] Preferably, the optical fiber 11 in the optical fiber waveguide material blank 1 is made of plastic optical fiber, and preferably the cladding layer is made of PMMA (acrylic) and the core layer is made of PS (polystyrene), which are relatively inexpensive raw materials.

[0015] The beneficial effects of this invention are as follows: First, it can convert planar or cylindrical images into three-dimensional facial shapes for display, which can achieve a high degree of visual simulation of facial expressions and eye images; second, its display surface is a free three-dimensional surface, which is suitable for designers to make arbitrary shapes, breaking the constraints of planar or cylindrical shapes on the design shape; third, the non-representational display surface design can prevent the display of dynamic images from causing image "creases" or "waves" in the visual perception. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0017] Figure 1 This is a schematic diagram of the manufacturing process for a face-shaped fiber optic waveguide device.

[0018] Figure 2 This is a schematic diagram of the process of arranging optical fibers in a forming mold.

[0019] Figure 3 This is a schematic diagram of a rectangular optical fiber waveguide material blank.

[0020] Figure 4 This is a schematic diagram of a cylindrical optical fiber waveguide material blank.

[0021] Figure 5 This is a schematic diagram of a trapezoidal optical fiber waveguide material blank.

[0022] Figure 6 Schematic diagram of reshaping of optical fiber waveguide material blank. Figure 7 This is a schematic diagram showing the orientation of the fiber optic head inside a shaped fiber waveguide material blank.

[0023] Figure 8 This is a schematic diagram of the thermoforming of fiber optic waveguide material blanks.

[0024] Figure 9 Schematic diagram of fiber optic waveguide material blank injection molding Figure 10 This is a schematic diagram of the thermoplastic forming of an optical fiber waveguide material blank.

[0025] Figure 11 This is a schematic diagram of the cavity of a thermoplastic mold with a female mold shape.

[0026] Figure 12 This is a schematic diagram of an open thermoplastic mold.

[0027] Figure 13 A schematic diagram of the profile shape of an optical fiber waveguide device with a planar incident light surface.

[0028] Figure 14 Schematic diagram of the profile shape of an optical fiber waveguide device with an inner cylindrical incident surface. Figure 15 This is a schematic diagram of a face-shaped fiber optic waveguide device.

[0029] Figure 16 This is a schematic diagram of a fiber optic waveguide device for simulating the touch sensation of a human face.

[0030] Figure 17 Schematic diagram of a bidirectional stretchable tactile film bonded to a facial-shaped fiber optic waveguide device. In the figure: 1. Fiber optic waveguide material blank; 2. Face-shaped fiber optic waveguide device profile; 3. Face-shaped fiber optic waveguide device; 10. Fiber optic adhesive; 11. Fiber optic cable; 12. Molding mold; 13. Thermoplastic mold; 14. Insulation box; 30. Transparent optical adhesive; 31. Extended viewing angle layer; 32. Anti-reflection layer; 33. Tactile film. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described manufacturing methods are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] The method for manufacturing the facial-shaped fiber optic waveguide device of the present invention, such as... Figure 1 As shown, the process begins with forming a fiber optic waveguide material blank 1, followed by fabricating a face-shaped fiber optic waveguide device profile 2, and finally fabricating a face-shaped fiber optic waveguide device 3. The specific manufacturing method and process flow, taking a plastic optical fiber with PMMA cladding and PS core material as an example, are as follows: Fiber optic waveguide material blank 1. Based on the required fiber length and diameter for implementing the face-shaped fiber optic waveguide device 3, the length of the fiber optic 11 selected for thermoforming is approximately: the thickest part of the face-shaped fiber optic waveguide device profile 2 (mm) × 1.2 + 15mm. The diameter range of the selected fiber optic 11 is as follows: for a close-packed arrangement, at least three diameters are selected, with the fiber optic 11 diameter ranging from the pixel pitch of the display module to (0.33~1.414); for a matrix arrangement, the fiber optic 11 diameter is the pixel pitch of the display module to 1 - 0.02mm. The fiber optic 11 is then sequentially arranged in the forming mold 12, as follows: Figure 2 As shown, to ensure that the adjacent optical fibers 11 have the same adjacency on both the incident and emitting surfaces, the fiber sheaths are melted and bonded by heating the molding mold 12 and the optical fibers 11 within it, or by injecting liquid curable adhesive between the sheaths of the optical fibers 11, thereby fixing the adjacency between the optical fibers 11, thus forming a one-piece molded optical fiber waveguide material blank 1. Its shape includes, but is not limited to, cuboids, cylinders, trapezoids, and irregular shapes (such as...). Figure 3 , Figure 4 , Figure 5 As shown, the one-piece molded fiber waveguide material blank 1 can also be placed into the thermoforming mold 13 for further thermoforming, such as... Figure 6 As shown, a fiber optic waveguide material blank 1 is fabricated such that the inner fiber head is oriented approximately perpendicular to the tangent direction of its three-dimensional light-emitting surface curve. Figure 7 As shown. The thickness of the fiber optic waveguide material blank 1 formed by heat forming is approximately the maximum thickness (mm) of the face-shaped fiber optic waveguide device profile 2 + 15mm; the thickness range of the fiber optic waveguide material blank 1 formed by bonding is approximately the maximum thickness of the face-shaped fiber optic waveguide device profile 2 + 6mm.

[0034] The optical fiber 11 of this invention is made of easily processed plastic optical fiber, and preferably uses PMMA (acrylic) for the cladding and PS (polystyrene) for the core layer, which are relatively inexpensive raw materials. Plastic optical fibers using different cladding and core materials have different glass transition temperatures, refractive indices, and thermal conductivity of the formed optical fiber. Therefore, the thermoforming temperature, holding temperature, and time also differ. The thermoforming temperature, holding temperature, and time given in this invention are a thermoforming temperature range and holding time range based on the optical fiber's glass transition temperature or melting temperature.

[0035] In the specific implementation of the fiber optic waveguide material blank 1, there is porosity between the optical fibers 11 arranged in the forming mold 12. Since the selected optical fibers 11 include at least three different diameters, and the diameter range of the selected three or more optical fibers 11 is the pixel pitch of the display module × (0.33~1.414), the porosity between the optical fibers 11 varies depending on the diameter and material of the selected optical fibers 11, resulting in different thicknesses for the formed fiber optic waveguide material blank 1. After heating the optical fibers 11 in the forming mold 12 to the melting temperature, the cylindrical optical fibers 11 undergo thermoforming and transform into polygonal optical fibers to fill the gaps between the optical fibers. The cross-sectional area of ​​the optical fibers 11 increases and decreases to approximately the thickness of the fiber optic waveguide material blank 1. Using a thermoforming method, the thickness of the formed fiber optic waveguide material blank 1 is approximately 80% of the length of the selected fiber 11. If the diameter range of the selected fiber 11 is relatively large and there are many different fiber diameters, the porosity between the fibers will be lower, and the thickness of the formed fiber optic waveguide material blank 1 will be thicker than that of a blank with a smaller diameter range and fewer fiber diameters. The thickness of the formed fiber optic waveguide material blank 1 should be approximately 15mm thicker than the face-shaped fiber optic waveguide device profile 2, taking full account of the machining allowance for processing the fiber optic waveguide material blank 1 into the three-dimensional face-shaped fiber optic waveguide device profile 2.

[0036] Further optimization of the scheme: the inner cavity shape of the forming mold 12 for the fiber optic waveguide material blank 1, and the arrangement of the optical fibers 11, is designed according to the required shape of the fiber optic waveguide material blank 1. The material of the forming mold 12 is determined according to the bonding method selected between the optical fibers, including but not limited to forming molds made of metal materials, forming molds made of non-metal materials, and forming molds made of composite materials. A heat forming method is adopted. The inner cavity dimensions of the forming mold 12 are: length or height equal to the designed length or height of the fiber optic waveguide material blank 1 + length or height design dimension × (glass transition temperature of the fiber core layer - 25℃) × thermal expansion coefficient of the fiber core layer (the operating temperature of the face-shaped fiber optic waveguide device 3 is set to 25℃), and depth equal to the length of the arranged optical fibers 11 within it, i.e., approximately the maximum thickness of the face-shaped fiber optic waveguide device profile 2 × 1.2 + 15mm. The advantage of heat forming is that it allows for further processing of the fiber optic waveguide material blank 1. Thermoforming is suitable for making fiber optic waveguide material blanks 1 of various shapes. The bonding method is adopted. The inner cavity dimensions of the forming mold 12 are: the length or height is equal to the designed length or height of the fiber optic waveguide material blank 1, and the depth is equal to the length of the fiber optic fibers 11 arranged inside. That is, the maximum thickness of the face-shaped fiber optic waveguide device profile 2 + about 6mm. The advantage of the bonding method is that it is simple and easy to implement. The disadvantage is that it is not suitable for making trapezoidal fiber optic waveguide material blanks 1, and the light transmittance of the fiber optic waveguide material blank 1 is lower than that of the thermoforming method.

[0037] The method for forming the optical fiber waveguide material blank 1 includes, but is not limited to: placing the forming mold 12 with the optical fibers 11 arranged in the cavity in a heat preservation box 14 and heating it so that the temperature of the sheath of the optical fiber 11 in the forming mold 12 reaches above its glass transition temperature. The heating temperature is approximately the glass transition temperature of the optical fiber sheath + 30°C, and the temperature is maintained for approximately the thickness (cm) of the optical fiber waveguide blank 1 × 0.8 hours / cm. The optical fibers 11 are bonded together in the forming mold 12 by the thermal expansion of the optical fiber 11 and the self-adhesive force of the optical fiber sheath after glass transition and subsequent curing. Figure 8 As shown; a liquid, curable fiber optic adhesive 10 with a refractive index not greater than the refractive index of the fiber optic sheath 11 is injected into the gaps between the optical fibers 11 arranged in the molding mold 12. After the fiber optic adhesive 10 cures, it bonds the optical fibers 11 together in the molding mold 12, as shown. Figure 9 As shown.

[0038] In practice, the specific heating temperature and holding time can be calculated based on the glass transition temperature of the fiber optic sheath material of the selected plastic optical fiber, and the holding time can be calculated based on the thermal conductivity of the optical fiber.

[0039] The thermoforming of the fiber optic waveguide material blank 1 involves placing the formed fiber optic waveguide material blank 1 into a thermoforming mold 13, and then placing the thermoforming mold 13 into a temperature-adjustable insulated box 14. Figure 10 As shown, the temperature of the insulation box 14 is adjusted to above the glass transition temperature of the optical fiber 11 and kept at that temperature, i.e., the glass transition temperature of the optical fiber skin + 25°C. The holding time above the glass transition temperature of the optical fiber skin is approximately 0.5 hours / cm × the thickness (cm) of the optical fiber waveguide blank 1. Utilizing the thermal expansion characteristics of the optical fiber waveguide blank 11 and the flowability of the inner optical fiber 11 after glass transition, the outline shape of the optical fiber waveguide blank 1 is made close to the outline shape of the optical fiber waveguide device profile 2, and the inner optical fiber head is made to point towards the tangent direction of its three-dimensional light-emitting surface curve, thereby achieving thermoplastic shaping of the formed optical fiber waveguide blank 1.

[0040] In practice, the specific heat preservation temperature and heat preservation time can be calculated based on the glass transition temperature of the fiber optic sheath of the selected plastic optical fiber, the thermal conductivity of the optical fiber, and the required dimensions of the optical fiber waveguide material blank 1.

[0041] The thermoplastic mold 13 for the fiber optic waveguide material blank 1 has a face shape, and the shape of the fiber optic waveguide device 3 includes, but is not limited to, the face shape of the female mold for the fiber optic waveguide device 3, such as... Figure 11 As shown; the shape of an open oven with directional heating, such as Figure 12As shown. When using a thermoplastic mold 13 in the shape of a face-shaped fiber optic waveguide device 3, the one-time-molded fiber optic waveguide material blank 1 needs to be processed into the outline shape of the face-shaped fiber optic waveguide device 3 and placed into the thermoplastic mold 13. The direction of the fiber head inside is changed by thermoplasticization, and the direction of the fiber head is made closer to the direction perpendicular to the tangent of its three-dimensional light-emitting surface curve. When using a thermoplastic mold 13 in the shape of an open oven with directional heating, either a one-time-molded fiber optic waveguide material blank 1 or a fiber optic waveguide material blank 1 processed into the outline shape of the face-shaped fiber optic waveguide device 3 can be used.

[0042] In practice, the one-time molded fiber optic waveguide material blank 1 can be directly placed into the thermoplastic mold 13 for shaping; the one-time molded fiber optic waveguide material blank 1 can be processed to make its surface contour close to the shape of the face-shaped fiber optic waveguide device 3, and then placed into the cavity of the face-shaped fiber optic waveguide device 3 female mold of the thermoplastic mold 13, so that the direction of the fiber head inside the fiber optic waveguide material blank 1 is closer to the direction perpendicular to the tangent on the surface of the fiber optic waveguide material blank 1; the thermoplasticized fiber optic waveguide material blank 1 can also be further processed to adapt to the thermoplastic mold of the face-shaped fiber optic waveguide device profile 3, that is, the fiber optic waveguide material blank 1 is thermoplasticized more than once. Using the fiber optic waveguide material blank 1 processed into the shape of the face-shaped fiber optic waveguide device 3 for thermoplasticizing can make the final face-shaped fiber optic waveguide device 3 display image with a more natural viewing angle.

[0043] To further optimize the scheme, the optical fiber 11 in the optical fiber waveguide material blank 1 is preferably made of plastic optical fiber, and the closest arrangement between adjacent optical fibers is preferred. The optical fiber 11 is selected from no less than three diameters. The diameter range of the optical fiber is the pixel pitch of the display module × (0.33~1.414) that is compatible with it. For example, the optical fiber waveguide material blank 1 is formed with four diameters: display module pixel pitch × 0.5, display module pixel pitch × 0.8, display module pixel pitch × 1, and display module pixel pitch × 1.2. If a matrix arrangement of optical fibers 11 is selected, the diameter of optical fiber 11 is the pixel pitch of the display module to which it is adapted × 1 - 0.02 mm. For example, if the pixel pitch is 0.5 mm, the minimum optical fiber diameter can be 0.48 mm and the maximum can be 0.499 mm. This ensures that the center distance between adjacent optical fibers at the light-incident end of the optical fiber waveguide material blank 1 is not greater than the pixel pitch of the display module to which it is adapted, and that the light-incident end of each optical fiber corresponds to one pixel of the display module. The matrix arrangement of optical fibers is suitable for matching display modules with display pixel pitch greater than 0.7 mm, such as LED display modules.

[0044] The facial-shaped fiber optic waveguide profile 2 is fabricated and formed. According to the designed three-dimensional facial shape, the fiber optic waveguide material blank 1 is precision-machined, and its light-incident surface is machined into a flat surface, adaptable to a flat panel display module, such as… Figure 13 As shown, or with an inner cylindrical shape, it can be adapted to curved display modules, such as... Figure 14 As shown, its light-emitting surface is processed into the designed three-dimensional facial shape. The equipment for processing the fiber optic waveguide material blank 1 into the facial-shaped fiber optic waveguide device profile 2 includes, but is not limited to: CNC engraving machines, milling machines, cutting saws, and polishing machines. In specific implementation, suitable processing technology and equipment can be arranged according to the shape of the fiber optic waveguide material blank 1 and the shape of the facial-shaped fiber optic waveguide device profile 2 to be processed.

[0045] The light-emitting surface shape of the fiber optic waveguide device profile 2 with facial shape includes, but is not limited to, a three-dimensional shape of a human face, a three-dimensional shape of a doll's face, a three-dimensional shape of eyes, or any three-dimensional surface shape. In the areas where dynamic images are presented, such as the mouth and eye areas, the transition between the three-dimensional concave and convex surfaces is non-representational (or the three-dimensional shape of the surface is detached from the specific shape of the simulated object, only presenting the concave and convex shape of its surface, and the transition between the concave and convex surfaces is a smooth arc transition, so that the surface will not cause visual image creases when displaying dynamic images). In the areas where static images are presented, it is representational (or completely identical to the three-dimensional shape of the simulated object's surface, a 1:1 or proportional replica of the surface three-dimensional shape of the simulated object). For example, when facial expressions change, the image of the nose is almost static, and the nose is a true restoration of its original shape according to the three-dimensional shape of the face in proportion, or it is non-representational, such as the nose being a raised bump. The shape of the light-incident surface or image-incident surface of the face-shaped fiber optic waveguide device profile 2 is such that it can be tightly fitted to the display surface of the display module, and the fitting gap is smaller than the minimum diameter of the optical fiber 11 inside the face-shaped fiber optic waveguide device profile 2.

[0046] The dimensional tolerance of the face-shaped fiber optic waveguide device profile 2 is a positive tolerance smaller than the radius of the fiber 11 within the fiber optic waveguide material blank 1, with a maximum tolerance of +0.5mm. For example, if the radius of the fiber 11 within the fiber optic waveguide material blank 1 is 0.2mm, then the dimensional tolerance of the face-shaped fiber optic waveguide device profile 2 is +0.1mm. The maximum tolerance of +0.5mm means that even if the diameter of the fiber 11 is 1mm, the maximum dimensional tolerance of the face-shaped fiber optic waveguide device profile 2 is no greater than 0.5mm, and the minimum radius of curvature of the surface irregularities in the non-image-producing area of ​​its light-emitting surface is greater than 2mm.

[0047] Facial-shaped fiber optic waveguide device 3. The facial-shaped fiber optic waveguide device 3 is a waveguide device that can guide the displayed image from the image-incident surface or light-incident surface of the display module to its display surface, and reproduce the facial expression of the simulated object with high fidelity. It is composed of, but is not limited to, a facial-shaped fiber optic waveguide device profile 2, an extended viewing angle layer 31, and an anti-reflection layer 32. Figure 15 As shown. When using the face-shaped fiber optic waveguide device 3, the light emitted by the display module's image is guided by the face-shaped fiber optic waveguide device profile 2 to its surface and then emitted. The light emitted by the display pixels is then diffused by the extended viewing angle layer 31, forming a wide-viewing-angle image of a three-dimensional surface displayed on the surface of the face-shaped fiber optic waveguide device 3. This image is then emitted through the anti-reflection layer 32, which eliminates crosstalk between ambient light and the displayed image, preventing a decrease in the effective contrast of the displayed image due to ambient light crosstalk. For faces requiring simulated tactile sensation, a tactile film 33 is also added. Therefore, surface treatment is required for the face-shaped fiber optic waveguide profile 2. The steps include, but are not limited to: first, surface polishing of the face-shaped fiber optic waveguide profile 2 with substandard surface finish; second, coating an extended viewing angle layer 31 and an anti-reflection layer 32 on the light-emitting surface of the face-shaped fiber optic waveguide profile 2 if the viewing angle and anti-reflection do not meet design requirements; third, for face-shaped fiber optic waveguide devices 3 with tactile requirements, a tactile film 33 meeting tactile requirements can be first pasted or coated on the light-emitting surface of the face-shaped fiber optic waveguide profile 2, where the thickness of the tactile film 33 has a negligible impact on the surface three-dimensional shape of the face-shaped fiber optic waveguide profile 2; then, an extended viewing angle layer 31 is added to the tactile film 33; finally, an anti-reflection layer 32 is coated on the extended viewing angle layer 31. Figure 16 As shown, the extended viewing angle layer 31, the anti-reflection layer 32, and the tactile film 33 can be made into a single composite layer, which is then adhered to the light-emitting surface of the face-shaped fiber optic waveguide device profile 2. For example, by adding a light diffusing agent to the tactile film 33 to form a tactile and wide-viewing angle composite layer, and then depositing the anti-reflection layer 32, a composite layer that combines tactile sensation, wide viewing angle, and anti-reflection can be formed. In practical implementation, following industry practice for extending the viewing angle layer and antireflection layer, the single-layer thickness of the antireflection layer 32 is typically a quarter wavelength of light, i.e., around 100nm. The thickness of the extended viewing angle layer is usually around 0.2mm. The thickness of the tactile film 33 is determined by the material of the selected tactile film and the requirements for tactile biomimicry. However, if the thickness is too thick, it will alter the surface irregularities of the light-emitting surface of the face-shaped fiber optic waveguide device profile 2; if the thickness is too thin, it will affect the tactile biomimicry. For face-shaped fiber optic waveguide devices 3 that require a tactile film 33 coating, the thickness of the tactile film 33 is less than the minimum radius of curvature of the surface irregularities on the light-emitting surface of the face-shaped fiber optic waveguide device profile 2.

[0048] When the tactile film 33 is a composite film of a bidirectional stretchable extended viewing angle layer (31), an antireflection layer (32), and a tactile film (33), a bidirectional stretchable transparent optical adhesive 30 is needed to adhere the composite film to the three-dimensional light-emitting surface of the face-shaped fiber optic waveguide device profile 2 without air bubbles. Furthermore, the thickness of the transparent optical adhesive 30 is less than the diameter of the optical fiber 11. Figure 17 As shown; when the tactile film 33 is made of liquid plasticizable plastic film, it can be implemented by spraying or racking, or the face-shaped fiber optic waveguide device profile 2 can be used as the male mold and its reverse side as the female mold. The female mold is pre-applied with a release agent, and the thickness of the film 33 is reserved when the male and female molds are joined. The plasticizable liquid film material is injected into the gap after the male and female molds are joined. After the liquid film material is cured, the male mold or the face-shaped fiber optic waveguide device profile 2 is removed, and the tactile film 33 is formed on the light-emitting surface of the face-shaped fiber optic waveguide device profile 2. Furthermore, a light diffusing agent can be added to the liquid film material so that the tactile film 33 also has the function of expanding the viewing angle.

[0049] The facial shape of the display surface of the fiber optic waveguide device 3 is a non-representational shape, that is: in the area where it presents dynamic images, the transition between the three-dimensional concavity and convexity of its surface is an arc transition or a non-representational three-dimensional face, and the curvature of the transition arc is based on the standard that it does not cause creases or waves in the visual appearance of the displayed image; in the area where it presents static images, its original shape is realistically restored according to the three-dimensional shape of its face; and the viewing angle of its three-dimensional face display image is consistent with the natural viewing angle, or is the same as or similar to the viewing angle of viewing a real face; for faces that require tactile sensation, the tactile sensation of its surface tactile film 33 is the same as or similar to the tactile sensation of touching a real face.

[0050] In practical implementation, the surface treatment methods and processes can be specifically designed according to the visual simulation degree of the image presented by the facial-shaped fiber optic waveguide device 3 and the tactile simulation degree of the surface feel, based on the design requirements and standards. For example, the standards that the facial-shaped fiber optic waveguide device 3 needs to meet should be determined according to user requirements, such as whether it is necessary to expand the field of view or add a skin-touch coating, and the processing procedures or processes for the facial-shaped fiber optic waveguide device profile 2 should be determined accordingly. Under normal circumstances, surface polishing, surface anti-reflection, and expanding the field of view are indispensable surface treatment processes. Whether to add tactile simulation can be selected based on the application or customer requirements. There are many methods for adding an extended viewing angle layer 31, an anti-reflection layer 32, or a tactile film 33. In specific implementation, the principle should be simplicity, efficiency, and low investment. For example, polishing paste + cloth wheel polishing is preferred for surface polishing, lens array is selected for the extended viewing angle layer 31 to expand the viewing angle, spraying or sputtering anti-reflection liquid is preferred for the anti-reflection layer 32, and composite light-transmitting material that can be plasticized at room temperature and has a skin-like feel after plasticization is preferred for the tactile film 33.

[0051] In this invention, the term "figurative" refers to the fact that the three-dimensional shape of the light-emitting or imaging surface of the facial-shaped fiber optic waveguide device profile 2 and facial-shaped fiber optic waveguide device 3 is completely identical to the three-dimensional shape of the surface of the simulated object, and the transitions between the concave and convex surfaces are all clearly defined or have sharp edges. "Non-figurative" refers to the fact that the three-dimensional shape of the light-emitting or imaging surface of the facial-shaped fiber optic waveguide device profile 2 and facial-shaped fiber optic waveguide device 3 deviates from the specific shape of the simulated object, only presenting the contours of its surface concave and convex shapes, and the transitions between the concave and convex surfaces are all rounded transitions without sharp edges, with a minimum radius of curvature greater than 2mm. For example, the eyes and lips of a figurative face have sharp edges, while the eyes and lips of a non-figurative face do not, thus preventing image creases when facial expressions change dynamically. The term "three-dimensional face" broadly refers to the three-dimensional surface of the variable image of the simulated object, and is not limited to human faces or toy faces, but also includes the three-dimensional surfaces of other variable images.

Claims

1. A method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device, characterized in that: 1) Forming a fiber optic waveguide material blank (1): Based on the length and diameter of the fiber (11) required for implementing the facial-shaped fiber optic waveguide device (3), select matching fiber (11). The length range of the fiber selected by thermoforming method is: the thickest thickness (mm) of the facial-shaped fiber optic waveguide device profile (2) × 1.2 + 10~30mm. The diameter range of the fiber selected is: the pixel pitch of the display module × (1 / 3~1.414). Select fiber (11) of no less than three diameters to form the fiber optic waveguide material blank (1). Arrange the fiber (11) sequentially in the forming mold (12) and make adjacent fiber (11) The adjacent relationship between the light input end and the light output end is the same. The fiber sheath is melted and bonded by heating the molding mold (12) and the optical fiber (11) inside, or by injecting liquid curable adhesive between the fiber sheaths to fix the adjacent relationship between the optical fibers (11) and make a one-time molded optical fiber waveguide material blank (1). Its shape includes cuboid, cylinder, trapezoid or irregular shape. The one-time molded optical fiber waveguide material blank (1) can also be placed in the thermoplastic molding mold (13) for thermoplastic molding to make the optical fiber waveguide material blank (1) whose inner optical fiber head tends to be perpendicular to the tangent direction of its three-dimensional light output surface curve. 2) Fabricate a facial-shaped fiber optic waveguide device profile (2). According to the designed facial three-dimensional shape, the fiber optic waveguide material blank (1) is finely processed. Its light-incident surface is processed into a planar shape (which can be adapted to a planar display module) or an inner cylindrical surface (which can be adapted to a curved display module). Its light-out surface is processed into the designed facial three-dimensional shape. 3) Fabricate a face-shaped fiber optic waveguide device (3). Polish the surface of the face-shaped fiber optic waveguide device profile (2). Then, deposit an extended viewing angle layer (31) and an anti-reflection layer (32) on the light-emitting surface of the face-shaped fiber optic waveguide device profile (2) to fabricate the face-shaped fiber optic waveguide device (3). For devices requiring simulated tactile sensation, a transparent tactile film (33) can be pasted or coated on the surface of the face-shaped fiber optic waveguide device profile (2). Then, an extended viewing angle layer (31) and an anti-reflection layer (32) can be deposited on the tactile film (33). Alternatively, the extended viewing angle layer (31), the anti-reflection layer (32), and the tactile film (33) can be made into a composite layer. Then, this composite layer can be pasted onto the light-emitting surface of the face-shaped fiber optic waveguide device profile (2) using transparent optical adhesive 30.

2. The method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device according to claim 1, characterized in that: The adjacent relationship between the optical fibers (11) in the optical fiber waveguide material blank (1) is consistent on the light-incident surface and the light-outcident surface, and the optical fibers (11) are bonded or fixed together. Its shape includes cuboid, cylinder, trapezoid, and irregular shape, and its forming thickness reserves processing allowance. The thickness range of the optical fiber waveguide material blank (1) formed by thermoforming method is: the maximum thickness (mm) of the face-shaped optical fiber waveguide device profile (2) + 10~30mm, and the reserved thickness range of 10~30mm is the processing allowance; the thickness range of the optical fiber waveguide material blank (1) formed by bonding method is: the maximum thickness of the face-shaped optical fiber waveguide device profile (2) + 5~10mm, and the reserved thickness range of 5~10mm is the processing allowance.

3. The method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device according to claim 1, characterized in that: The shape of the forming mold (12) for the optical fiber waveguide material blank (1) is designed according to the required shape of the optical fiber waveguide material blank (1). The material of the forming mold (12) is determined according to the bonding method selected between the optical fibers (11), including forming molds made of metal materials, forming molds made of non-metal materials, and forming molds made of composite materials. The forming method is heat forming. The inner cavity size of the forming mold (12) is: the length or height is equal to the length or height design size of the optical fiber waveguide material blank (1) + the length or height design size × ( The glass transition temperature of the fiber core is -25℃) × the thermal expansion coefficient of the fiber core, and the depth dimension is equal to the length of the fiber (11) arranged inside it, that is: the maximum thickness of the face-shaped fiber waveguide device profile (2) × 1.2 + 10~30mm; the inner cavity dimension of the molding mold (12) is: the length or height dimension is equal to the length or height design dimension of the fiber waveguide material blank (1), and the depth dimension is equal to the length of the fiber (11) arranged inside it, that is: the maximum thickness of the face-shaped fiber waveguide device profile (2) + 5~10mm.

4. The method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device according to claim 1, characterized in that: The method for forming the optical fiber waveguide material blank (1) includes: placing the forming mold (12) in which optical fibers (11) are arranged in the cavity into a heat preservation box (14) and heating it to make the temperature of the fiber skin in the forming mold reach its glass transition temperature +10~45℃ and keep it warm for a time equal to the length (cm) of the optical fiber 11 × 0.5~1 hours / cm. The optical fibers (11) in the forming mold (12) are bonded together by the thermal expansion of the optical fiber (11) and the self-adhesive force of the optical fiber skin after glass transition or melting and then curing. Liquid curable optical fiber adhesive (10) with a refractive index not greater than the refractive index of the optical fiber skin is injected into the gaps of the optical fibers (11) arranged in the forming mold. After the optical fiber adhesive (10) is cured, the optical fibers (11) in the forming mold (12) are bonded together.

5. The method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device according to claim 1, characterized in that: The thermoforming of the fiber optic waveguide material blank (11) involves placing the formed fiber optic waveguide material blank into a thermoforming mold (13), and then placing the thermoforming mold (13) into a temperature-adjustable heat preservation box (14). The temperature of the heat preservation box (14) is adjusted to the glass transition temperature of the fiber optic sheath +10~35℃ and kept warm for a time equal to the thickness (cm) of the fiber optic waveguide material blank 1 × 0.5~0.8 hours / cm. By utilizing the thermal expansion characteristics of the fiber optic waveguide material blank (11) and the flowability of the inner fiber (11) material after glass transition, the shape of the light-emitting surface of the fiber optic waveguide material blank (1) is made close to the outline shape of the light-emitting surface of the fiber optic waveguide device profile (2), and the inner fiber head is made to point towards the tangent direction of its three-dimensional light-emitting surface curve, thereby achieving thermoforming of the shape of the formed fiber optic waveguide material blank (1) and adjustment of the surface light emission direction.

6. The method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device according to claim 1, characterized in that: The thermoplastic mold (13) for the fiber optic waveguide material blank (1) includes a female mold shape resembling a face-shaped fiber optic waveguide device (3) and a directional heating open oven shape. When using the thermoplastic mold (13) resembling a face-shaped fiber optic waveguide device (3), the one-time formed fiber optic waveguide material blank (1) needs to be processed into the outline shape of the face-shaped fiber optic waveguide device (3) and placed in the thermoplastic mold (13). The direction of the fiber head inside is changed by thermoplasticization, and the direction of the fiber head approaches the direction perpendicular to the tangent of its three-dimensional light-emitting surface curve. When using the thermoplastic mold (13) resembling a directional heating open oven shape, either the one-time formed fiber optic waveguide material blank (1) or the fiber optic waveguide material blank (1) processed into the outline shape of the face-shaped fiber optic waveguide device (3) can be used.

7. The method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device according to claim 1, characterized in that: The facial-shaped fiber optic waveguide device profile (2) is made from a fiber optic waveguide material blank (1) through precision machining. Its light-incident surface is machined into a planar or inner cylindrical surface, and its light-outceasing surface is machined into, but is not limited to, the simulated three-dimensional facial shape, doll facial shape, eye shape, or any three-dimensional surface shape. Furthermore, in the area where dynamic images are displayed, the concave and convex surfaces are non-representational or the surface three-dimensional shape is detached from the specific shape of the simulated object, only presenting the concave and convex shape of its surface. The transitions between the concave and convex surfaces are all smooth arc transitions, ensuring that the surface does not appear jagged when displaying dynamic images. It will cause visual image creases; in the area where it presents static images, the concave and convex surfaces are figurative (or completely identical to the three-dimensional shape of the surface of the simulated object, and are 1:1 or proportionally replicated) or non-figurative; the light-incident surface or image-incident surface shape of the face-shaped fiber optic waveguide device profile (2) is a shape that can be tightly fitted with the display surface of the display module, and the processing precision makes the fitting gap between the light-incident surface of the face-shaped fiber optic waveguide device profile (2) and the display surface of the display module smaller than the minimum diameter of the fiber inside the face-shaped fiber optic waveguide device profile (2); The dimensional tolerance of the facial-shaped fiber optic waveguide device profile (2) is a positive tolerance less than the radius of the fiber (11) inside the fiber optic waveguide material blank (1), with a maximum of +0.5mm, and the minimum radius of curvature of the surface unevenness in the non-image area of ​​its light-emitting surface is greater than 2mm.

8. The method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device according to claim 1, characterized in that: The facial-shaped fiber optic waveguide device (3) is a waveguide device that transmits the displayed image from the image entrance or light entrance surface of the display module to the display surface and presents the facial expression of the simulated object with high fidelity. It consists of, but is not limited to, a facial-shaped fiber optic waveguide device profile (2), an extended viewing angle layer (31), and an anti-reflection layer (32). For applications requiring simulated tactile sensation, a tactile film (33) is also required. Therefore, the facial-shaped fiber optic waveguide device profile (2) needs to undergo surface treatment. The steps include: first, polishing the surface of the facial-shaped fiber optic waveguide device profile (2) if the processing smoothness or surface roughness does not meet the standards; second, polishing the surface of the facial-shaped fiber optic waveguide device profile (2) if the viewing angle and anti-reflection do not meet the design requirements. First, an extended viewing angle layer (31) and an anti-reflection layer (32) are coated on the light-emitting surface. Then, for the face-shaped fiber waveguide device (3) with tactile requirements, a transparent tactile film (33) is first pasted or coated on the light-emitting surface of the face-shaped fiber waveguide device profile (2). The thickness of the tactile film (33) has a small and negligible effect on the three-dimensional shape of the face-shaped fiber waveguide device profile (2). Then, an extended viewing angle layer (31) and an anti-reflection layer (32) are coated on the tactile film (33), or the extended viewing angle layer (31), the anti-reflection layer (32), and the tactile film (33) are made into an integral composite layer. Then, this composite layer is pasted on the light-emitting surface of the face-shaped fiber waveguide device profile (2).

9. The method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device according to claim 1, characterized in that: The optical fiber (11) in the optical fiber waveguide material blank (1) is made of plastic optical fiber, and preferably the cladding layer is made of PMMA acrylic and the core layer is made of PS polystyrene, which are relatively inexpensive raw materials.

10. The method for manufacturing a three-dimensional facial-shaped fiber optic waveguide device according to claim 1 or 8, characterized in that: The thickness of the tactile film (33) of the face-shaped fiber waveguide device (3) is smaller than the minimum radius of curvature of the surface of the light-emitting surface of the face-shaped fiber waveguide device profile (2).

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