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Multimedia teaching system

A multimedia teaching and crystallite wide technology, applied in the field of teaching systems, can solve the problems of oxidation color cast, oxidation, and the inability to maintain stable gain for a long time, and achieve the effects of increasing service life, high gain, and preventing the influence of ambient light

Inactive Publication Date: 2016-04-06
SICHUAN WINSHARE EDUCATION SCI & TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0006] Aging: After the particles are exposed to the air, they combine with oxygen ions, resulting in oxidation, which makes it impossible to maintain a stable gain for a long time, and is also prone to the problem of oxidation color cast

Method used

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Embodiment

[0024] A multimedia teaching system includes a microcrystalline widescreen display screen and a projector. The microcrystalline widescreen display screen is a composite layered structure, including a base layer and a high reflective layer arranged on the base layer. The high reflective layer is composed of micron-sized It is composed of reflective particles, and the reflective particles are composed of aluminum powder with a particle size of 40-50 microns.

[0025] A polarizing layer is arranged on the high reflection layer, and the polarizing layer is made of dichroic material.

[0026] A diffusion layer is provided on the surface of the polarizing layer, and the diffusion layer is made of PC and PMMA.

[0027] The polarizing layer is a polarizer, and the TAC layer of the polarizer adopts a matte surface.

[0028] The RGB ratio of the microcrystalline widescreen display is kept in a balanced state of 1:1:1, and the color temperature is set between 5500-6500K.

[0029] The l...

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Abstract

The invention discloses a multimedia teaching system, solving the problems of mirror surface effect, glaring and aging which often appear on a metal screen. The multimedia teaching system comprises a microcrystalline widescreen display screen and a projector. The microcrystalline widescreen display screen is a composite layered structure, and comprises a base layer and a high reflecting layer arranged on the base layer. The high reflecting layer is composed of micron order reflective particles, and the reflective particles are composed of 40-50 micrometer particle sized aluminum powder. The multimedia teaching system has high gains, and employs the high reflecting layer composed of 40-50 micrometer particle sized aluminum powder, which can effectively provide better sense for users, meanwhile better combine with a polarizing layer to better avoid environmental light influence, and effectively prolong the service life.

Description

technical field [0001] The invention relates to a teaching system, in particular to a multimedia teaching system. Background technique [0002] Existing metal curtains often have mirror effect, glare, aging and so on. [0003] Among them, the mirror effect means that the surface of the screen is too smooth, causing the shadows of surrounding objects to appear on the screen, just like a mirror. [0004] Glare: Also known as hotspot effect or metallic glare, if you watch carefully, you will find that there are many small eye-catching bright spots on the screen, and there are many sand-like black spots around it, and tears, dizziness and vomiting will appear after watching for a long time This is because some visual cells on the retina feel the burn of the bright spot and request the pupil to shrink, while other cells feel the black spot and request the pupil to dilate. The optic nerve transmits two opposite signals at the same time, making the nerve center Confusion occurs, ...

Claims

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Application Information

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IPC IPC(8): G09B5/02G03B21/604
CPCG09B5/02G03B21/604
Inventor 黄冠铭肖明
Owner SICHUAN WINSHARE EDUCATION SCI & TECH
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