CN2468073Y

CN2468073Y - Projection screen capable of preventing light from interfering

Info

Publication number: CN2468073Y
Application number: CN 01205653
Authority: CN
Inventors: 梁坚平
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-23
Filing date: 2001-02-23
Publication date: 2001-12-26
Anticipated expiration: 2011-02-23

Abstract

The utility model relates to a projection screen capable of preventing light from interfering, which comprises a basal plate 1, a zigzag pitch strip 2 and high-brightness light-reflecting material 3, wherein, the high-brightness light-reflecting material 3 is stuck on the inclined plane of the zigzag pitch strip 2; the inclined plane of the zigzag pitch strip 2 and the basal plate 1 form an included angle between 110 DEG and 175 DEG. When projected, the projection screen can shield light-dispersing interference of other light rays to projected images like a sun-proof shed, and can cause the projected images to be clearer and brighter. The projection screen is especially suitable for composite background photography, and is capable of overcoming the defect of the light dispersion of the projection screen. The generalization and use of the projection screen can further satisfy the requirement that wedding photography and advertisement photography industries utilize projection images to replace backgrounds.

Description

Can prevent the projection screen that light disturbs

The utility model relates to a kind of projection camera.

The background process cinematography is a kind of new technology that wedding gauze kerchief advertisement, photograph industry are used, its principle is to utilize lantern projection's background to come instead of manual drawing setting, as long as various honourable lantern slides are projected in the screen of high brightness orienting reflex by background combining machine, the personage just may stand in the screen front and photographs the photomontage of a people in scape, thereby because image content is true to nature and can the ever-changing welcome that is subjected to the consumer deeply.

In shooting process, in order to guarantee the clear gorgeous of projected picture, personage's illuminating ray just cannot shine in the screen in order to avoid water down projected picture, therefore how can make illuminating ray only shine the personage and shine less than on the projection screen on one's body, just become to influence the key of background process cinematography effect.

The employed projection screen of background combining machine of domestic and international various models has all adopted the soft orienting reflex screen in plane of vertical hanging at present.Facts have proved that this projection screen in use exists following deficiency: one, because vertical plane causes the light reflection easily, so to houselights to block requirement strict especially, careless slightly, be not the sharpness that optical phenomenon has disturbed projected picture of filling that occurs in the screen, the illuminating effect that is exactly personage's face has produced ugly nose shadow clamping plate light; Two, the personage can not be too near apart from projection screen, otherwise the easier light that fills of screen; If add the distance of VIP and screen, can cause the imbalance of personage and background perspective ratio again, make picture produce feeling of unreality.

Above-mentioned deficiency has greatly influenced promoteing the wider application of background process cinematography technology.

The purpose of this utility model is exactly to improve at the weak point that existing projection screen exists, designed a kind of novel structure, result of use is more desirable---can prevent the projection screen that light disturbs.

The purpose of this utility model can realize by following measure: a kind of substrate 1 that includes, the serrate bar 2 that leans forward, the projection screen that can prevent the light interference of high-brightness reflective material 3, the serrate that is provided with substrate 1 bar 2 that leans forward, lean forward bar 2 of serrate forms 110 °～175 ° the angle that leans forward with substrate 1, the lean forward width of bar 2 of serrate is 5～1000mm, bottom is a straight line, the top is the toothed edge that 5～500 equilateral triangles are formed, the top of the horn distance between two triangle sawtooth is 5～500mm, and high-brightness reflective material 3 sticks on serrate and leans forward on the inclined-plane that leans forward of bar 2.Described serrate lean forward bar about in the of 2 two spacing distance be 5～1000mm.Described serrate lean forward bar about in the of 2 two misplace in 1/2 triangle sawtooth about when aligned, wanting.The thickness of described substrate 1 is 0.1～30mm, and width is 5～1000mm, and length is 50～3000mm; 1～500 serrate that is provided with every substrate 1 bar 2 that leans forward can hand over some substrates 1 to be fixed on the vertical planar bracket in use, and one 1～50 square metre projection screen is formed in splicing.

The utility model includes substrate, serrate lean forward bar, three parts of high-brightness reflective material, compare with existing projection screen, the soft interference projection screen not against sunshine in plane of original vertical hanging is changed into: several are had the lean forward substrate splicing of bar and high-brightness reflective material of serrate be fixed on the vertical plane support, that just forms the three-dimensional hard of a width of cloth can prevent the novel projection screen that light disturbs.The feature of this screen is: one, the bar that leans forward of the serrate on the substrate has certain angle of inclination, after above high-brightness reflective material sticks on, just equal to have changed the reflection angle of original plane projection screen, but this reflection angle can not influence the brightness of image of screen projection; Two, the barrier action of blocking personage's illuminating ray can have been played as sun-proof canopy in the lean forward dip plane of bar of serrate on the substrate, make personage's illuminating ray not disturb projected image in the screen, overcome the long-standing disadvantage of the soft projection screen in original plane effectively, made the effect ideal more true to nature of background process cinematography.

The utility model utilizes above-mentioned technical characterictic, solved the not technical barrier of interference against sunshine of the soft projection screen in plane, successfully develop a kind of novel projection screen that can prevent that light from disturbing, not only reduced the difficulty of personage's illumination light, and improved the quality of background photomontage, this new technology of background process cinematography can further be applied.This projection screen adopts spliced installation, and not only manufacturing cost is low, and transportation and clean and maintenance are all very convenient.

Be described in further detail by embodiment below in conjunction with accompanying drawing:

Fig. 1 is that the utility model master looks synoptic diagram

Fig. 2 is that synoptic diagram is looked on the utility model left side

Fig. 3 is the lean forward shape synoptic diagram of bar 2 of serrate in the utility model

At a thickness is that 5mm, length are that 240mm, width are on the rectangle plastics substrate 1 of 24mm, and the serrate that a width is arranged the is 50mm bar 2 that leans forward is pasted with high-brightness reflective material 3 on serrate leans forward the rake of bar 2.The lean forward top of bar 2 of serrate is toothed edges that 12 equilateral triangles are arranged, and the distance of triangle the top of the horn and the top of the horn is 20mm, and the lean forward bottom of bar 2 of serrate is a straight line, forms 135 ° the angle that leans forward with substrate 1.When some substrates 1 spliced up and down, the lean forward spacing distance up and down of bar 2 of two serrate was 24mm, simultaneously two serrate, 1/2 serrate triangle that misplaces about bar 2 is wanted that leans forward when consistency from top to bottom is arranged.Several are had the lean forward substrate 1 of bar 2 and high-brightness reflective material 3 of serrate arrange assembly unit up and down, and be fixed on the vertical planar bracket, just can form the novel projection screen of the random required area of a width of cloth.

Claims

1 one kinds include substrate (1), the serrate bar (2) that leans forward, the projection screen that can prevent the light interference of high-brightness reflective material (3), it is characterized in that: substrate (1) is provided with the serrate bar (2) that leans forward, lean forward bar (2) and substrate (1) of serrate forms 110～175 the angle that leans forward, the lean forward width of bar (2) of serrate is 5～1000mm, bottom is a straight line, the top is the toothed edge that 5～500 equilateral triangles are formed, the top of the horn distance between two triangle sawtooth is 5～500mm, and high-brightness reflective material (3) sticks on serrate and leans forward on the inclined-plane that leans forward of bar (2).

2 projection screens that can prevent that light from disturbing according to claim 1, it is characterized in that described serrate lean forward bar (2) up and down two spacing distance be 5～1000mm.

3 projection screens that can prevent that light from disturbing according to claim 1, it is characterized in that described serrate lean forward bar (2) up and down two misplace in 1/2 triangle sawtooth about when aligned, wanting.

4 projection screens that can prevent that light from disturbing according to claim 1, the thickness that it is characterized in that described substrate (1) is 0.1～30mm, and width is 5～1000mm, and length is 50～3000mm; 1～500 serrate that is provided with every substrate (1) bar (2) that leans forward, substrate (1) is fixed on the vertical planar bracket.