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Optical fiber panel and preparation method thereof, projection curtain and preparation method thereof

A fiber optic panel and curtain technology, applied in the field of optical projection, can solve the problems of low contrast of the total reflection fiber optic panel, unable to apply in the field of projection imaging, unable to obtain better absorption, etc., to achieve smooth surface and easy maintenance, improve color resolution, The effect of good light resistance

Pending Publication Date: 2022-07-15
祝佳丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the optical fiber panel has the function of transmitting light, it cannot perform total reflection in the opposite direction of the incident light, so it cannot be used in the field of projection imaging
Moreover, the existing optical fiber panels require high transmittance. In order to ensure the overall high transmittance of the optical fiber panels, most of the individual fibers are filled with white silk, so that darker images cannot be reflected in the process of incident light return total reflection Better absorption is obtained, and the contrast of the prepared total reflection fiber optic panel is lower

Method used

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  • Optical fiber panel and preparation method thereof, projection curtain and preparation method thereof
  • Optical fiber panel and preparation method thereof, projection curtain and preparation method thereof
  • Optical fiber panel and preparation method thereof, projection curtain and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like figure 2 As shown in the figure, a core glass rod with a high refractive index (Nd=1.812) is covered with a leather glass tube with a low refractive index (Nd=1.505) to form a set of composite pipe rods, and another cover is covered on the outside. Absorbent leather tube (black glass tube) with low transmission rate. The composite glass tube rod is put into the wire drawing machine, and the temperature is raised to 800°C for monofilament drawing. After the monofilament is drawn, a certain process of rod-arranging treatment is performed on the taken monofilament, so that the monofilament is arranged into a regular hexagonal multifilament rod, and the pores are filled with absorbing glass fibers. The arranged multifilament rods were put into a multifilament furnace, and the multifilament drawing was performed when the temperature was raised to 785°C. The drawn multifilament with a diameter of 6 μm was cut into a multifilament with a length of 15 cm, and the multif...

Embodiment 2

[0052] like image 3 As shown in the figure, a core glass rod with a high refractive index (Nd=1.813) is covered with a leather glass tube with a low refractive index (Nd=1.651) to form a set of composite pipe rods, and another cover is covered on the outside. Absorbent leather tube (black glass tube) with low transmission rate. The composite glass tube rod is put into the wire drawing machine, and the temperature is raised to 810°C for monofilament drawing. After the monofilament is drawn, a certain process of rod-arranging treatment is performed on the monofilament, so that the monofilament is arranged into a regular quadrilateral multifilament rod, and the pores are filled with absorbing glass fibers. The arranged multifilament rods were put into a multifilament furnace, and the multifilament drawing was performed when the temperature was raised to 793°C. The drawn multifilament with a diameter of 6 μm was cut into a multifilament with a length of 15 cm, and the multifila...

Embodiment 3

[0054] like Figure 4 As shown in the figure, a core glass rod with a high refractive index (Nd=1.768) is covered with a leather glass tube with a low refractive index (Nd=1.615) to form a set of composite pipe rods, and another cover is covered on the outside. Absorbent leather tube (black glass tube) with low transmission rate. Put the composite glass tube rod into the wire drawing machine, heat it up to 790°C, and draw the monofilament. After the monofilament is drawn, a certain process of rod arrangement is performed on the taken monofilament, so that the monofilament is arranged into a regular hexagonal multifilament rod, and the pores are filled with colorless glass fibers. The arranged multifilament rods are put into a multifilament furnace, and the multifilament drawing is performed when the temperature is raised to 770°C. The drawn multifilament with a diameter of 10 μm was cut into a multifilament with a length of 15 cm, and the multifilament was subjected to a cer...

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Abstract

The invention discloses an optical fiber panel and a preparation method thereof, and a projection curtain and a preparation method thereof, one of two surfaces of the optical fiber panel is subjected to total reflection treatment, and the other surface is subjected to dechromatic astigmatism treatment to form a colorless astigmatism interface. And the transmittance of the single image transmitting optical fiber is reduced, so that the novel optical fiber panel capable of performing total reflection is formed. According to the specific preparation method, the optical fiber panel which is low in transmittance and large in size is prepared according to the technical means of monofilament drawing, rod arranging, multifilament drawing, screen arranging, screen pressing, slicing, polishing of one face, accurate grinding of the other face and the like. The polished surface of the optical fiber panel is subjected to silver mirror reaction or vacuum coating to prepare a total reflection interface, and the surface of the fine grinding surface is coated with a layer of transparent medium such as epoxy resin. Under the action of the projection light source, light enters from the fine grinding surface and is totally reflected in each optical fiber, and all the light is completely reflected to the surface of the optical fiber panel to form an image with distinct contrast, so that the gain and the contrast ratio of projection imaging are greatly improved.

Description

technical field [0001] The invention belongs to the field of optical projection, and in particular relates to an optical fiber panel and a preparation method thereof, a projection screen and a preparation method thereof. Background technique [0002] The existing projection screen equipment mainly includes white plastic screen, gray plastic screen, glass bead screen, metal screen, white glass fiber screen, gray glass fiber screen, black grid screen and Fresnel anti-light screen according to the type of screen. Among them, the white plastic screen, gray plastic screen, glass bead screen, metal screen, white glass fiber screen and gray glass fiber screen are not anti-light screens. In non-dark environments, they will be easily disturbed by ambient light, lose image contrast, and form A white situation. [0003] Although the production cost of white plastic projection screen is low, the reflection of light is soft, and the visual fatigue is not easy to be watched for a long ti...

Claims

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Application Information

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IPC IPC(8): G02B6/08G02B6/036G02B5/00G03B21/56G03B21/60
CPCG02B6/08G02B6/036G02B6/03694G02B5/003G03B21/56G03B21/60
Inventor 祝佳丽刘文佳刘佳伟
Owner 祝佳丽
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