Super short-throw laser projection display screen and super short-throw laser projection device

Abstract

The invention discloses a super short-throw laser projection display screen and a super short-throw laser projection device, and solves the technical problem of inconvenience in carrying and installation of a projection display screen matched with the existing super short-throw laser projection device. The super short-throw laser projection display screen comprises a reflection layer, wherein the reflection layer comprises a plurality of arc micro-protrude structure units, each micro-protrude structure unit is sequentially arranged to form an upper half round pattern, and from the circle center of the upper half round shaft to the outside, acute angles between tangent planes of incident light receiving surfaces of the micro-protrude structures and the reflection layer are gradually increased, so that light emitted from a super short-throw lens is incident to the reflection layer and is then reflected in parallel or in an approximately parallel way. With the application of the projection display screen provided by the invention, the received incident light in a wide angle range is reflected in parallel or in the approximately parallel way, the reflection layer can be sprayed and formed in an arbitrary installation plane in a spraying way, so that the super short-throw laser projection display screen is simple and practical to transport and install.

Description

technical field [0001] The invention relates to the field of laser projection display, in particular to an ultra-short-focus laser projection display screen used for ultra-short-focus laser equipment, and an ultra-short-focus laser projection device equipped with the ultra-short-focus laser projection display screen. Background technique [0002] The size of the picture projected by ordinary projection equipment is determined by the distance between the projection equipment and the projection display screen. The larger the distance, the larger the projected picture. The ultra-short-focus laser projection equipment has a small requirement for distance, and often only needs a projection distance of tens of centimeters to project a larger picture. It is also very convenient to install. It only needs to be placed in front of the projection display screen. Compared with ordinary projection equipment, it has the advantages of saving space and convenient installation. [0003] Spe...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an ultra-short-focus laser projection display screen and ultra-short-focus laser projection equipment, which solves the technical problem of inconvenient transportation and installation of the projection display screen matched with the existing ultra-short-focus laser projection equipment

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