CN201177669Y

CN201177669Y - Thin liquid lens array of wide angular field of view

Info

Publication number: CN201177669Y
Application number: CNU2008200335221U
Authority: CN
Inventors: 夏军; 雷威
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2008-03-25
Filing date: 2008-03-25
Publication date: 2009-01-07
Anticipated expiration: 2018-03-25

Abstract

A thin liquid lens array with a wide visual angle range relates to a thin device with wide a visual angle and capable of freely switching between a 2D image display manner and a 3D image display manner. An intermediate partition (9) is formed on a first transparent substrate (7); the first transparent substrate (7) and the intermediate partition (9) are covered with a hydrophobic layer (5); the mesh holes of the intermediate partition (9) are filled with first liquid (10), and the height of the first liquid (10) is equal to that of the intermediate partition (9); a first conductive electrode (2) is fabricated below a second transparent substrate (1); and second liquid (8) contacts the first liquid (10) and is sealed between the intermediate partition (9) and the second transparent substrate (1). The thin liquid lens array needs no externally applied voltage in the 2D image display manner, and has low entire power consumption and simple structure.

Description

A kind of thin liquid lens array of wide angular field of view

Technical field

The utility model relates to a kind of liquid lens array, especially relates to liquid lens array a kind of wide visual angle, slim, that focal length is variable.

Background technology

It is a kind of real tri-dimension display technique that image set becomes stereo display technique (integral imaging), can realize continuous motion parallax.The integrated three-dimensional display of traditional images adopts the lens arra of fixed focal length.The applicant applies for a patent in China and discloses a kind of Zoom lens three-D display among the CN200710022982.4, and this invention provides a kind of focal length variable liquid lens array, has two-dimentional display mode and 3-D display mode and characteristics such as freely changes.But in should invention, the middle partition between forward and backward transparency carrier will exert an influence to the angular field of view of three-dimensional image, cuts off thickly more, and angular field of view is narrow more.The invention provides a kind of thin liquid lens array structure, the angular field of view of its three-dimensional image increases to some extent, and power consumption decreases.

Summary of the invention

Technical matters: image set is become the influence of stereoscopically displaying images angular field of view for the middle partition that overcomes liquid lens array, the utility model provides a kind of thin liquid lens array of wide angular field of view, this thin liquid lens array can provide the angular field of view of broad, and realize that under situation about not powering up two dimensional image shows, thereby reduce the power consumption when watching two dimensional image for a long time.

Technical scheme: cut off in the middle of the thin liquid lens array of wide angular field of view of the present utility model is made on first transparency carrier, the middle partition is reticulate texture, the corresponding liquid lens unit of each mesh; Cover hydrophobic layer at first transparency carrier with on middle the partition, fill first liquid in described mesh, the height of first liquid equated with middle the partition; Making first conductive electrode under second transparency carrier, is second liquid under first conductive electrode, and second liquid contacts with first liquid phase, and is sealed between the middle partition and second transparency carrier; When on-load voltage not, the surface of contact between first liquid and second liquid is first liquid level.

Can also increase one deck second conductive electrode at first transparency carrier with between middle the partition, between the centre partition and second conductive electrode, increase by a layer insulating, at first conductive electrode and middle cut off, on-load voltage between second conductive electrode, second liquid is soaked into mutually with centre partition, second conductive electrode successively, and the surface of contact between first liquid and second liquid is second liquid level at this moment.

Can also increase one deck dielectric layer at first transparency carrier with on middle the partition, on this dielectric layer, cover hydrophobic layer again.Cut off in the middle of the height of first liquid can also be higher than or be lower than, thereby realize second liquid and the various initial contact angle schemes between middle the partition.The middle partition is reticulate texture, each mesh is the rotation symmetric form, mesh inside can be cylindrical or circle is trapezoidal or the hexagon of bowl-type or symmetry, the arrangement mode of mesh can be the rectangular or product word shapes or cellular of ranks, when the surface of contact between first liquid and second liquid was first liquid level, thin liquid lens array was operated in the two dimensional image display mode; When the surface of contact between first liquid and second liquid was second liquid level, thin liquid lens array was operated in the three-dimensional image display mode, according to the variation of focal length comprise fixed focal length mode, time division way and the time become mode.

Beneficial effect: the beneficial effects of the utility model are, the middle partition highly only equates with first liquid, and thin thickness in the angular field of view of broad, has reduced middle partition to the blocking of display pixel, and has expanded angular field of view; Need not impressed voltage under the two dimensional image display mode, overall power is low, and is simple in structure.

Description of drawings

Fig. 1 is the sectional structural map of first embodiment.

Fig. 2 is the sectional structural map of second embodiment.

Have among the above figure: second transparency carrier 1, first conductive electrode 2, second liquid level 3, first liquid level 4, hydrophobic layer 5, second conductive electrode 6, first transparency carrier 7, second liquid 8, middle 9, first liquid 10 that cuts off.

Embodiment

In first embodiment shown in Figure 1, first transparency carrier 7 is by glass, or transparent resin material is made, cut off 9 in the middle of being manufactured with on first transparency carrier 7, middle cut off 9 and make by conductive material, metal material indium steel for example, or conducting polymer materials, or silver electrode material etc., also can constitute by the dielectric material of surface-coated conductive layer, for example cover conducting polymer materials etc. on the organic glass, in the middle of being manufactured with, cover hydrophobic layer 5 on first transparency carrier 7 of partition 9, hydrophobic layer 5 can adopt the stronger materials of hydrophobicity such as Teflon, for preventing that hydrophobic layer 5 from being punctured by impressed voltage, can below hydrophobic layer 5, make one deck insulating medium layer earlier, for example adopt the dielectric layer of polyimide, simplify among the figure and do not draw, middle partition 9 is the reticulated cell structure, at inner first liquid 10 of filling of reticulated cell, it is nonpolar iknsulating liquid, mineral wet goods for example, when on-load voltage not, the height of first liquid 10 equates with middle partition 9, on first liquid second liquid 8, promptly conduct electricity or polar liquid, brine solution for example, or deionized water etc., it above second liquid 8 second transparency carrier 1, can be by glass, or transparent resin material is made, second transparency carrier has for 1 time first conductive electrode 2 to contact with second liquid 8, first conductive electrode 2 can be ITO, or ZnO, or the transparency conductive electrode made of conducting polymer, when on-load voltage not, the surface of contact of second liquid 8 and first liquid 10 is planes, i.e. first liquid level 4, when on-load voltage between first conductive electrode 2 and middle partition 9, to become infiltration by not soaking between second liquid 8 and the middle partition 9, and increase with voltage, contact angle between the two diminishes gradually, thereby the surface of contact of second liquid 8 and first liquid 10 becomes curved surface, i.e. second liquid level 3.

In second embodiment shown in Figure 2, increase one deck second conductive electrode 6 on first transparency carrier 7, second conductive electrode 6 can be ITO, or ZnO, or the transparency conductive electrode made of conducting polymer, second conductive electrode 6 can be conducted with middle partition 9, also can be by increasing insulation course and middle partition 9 insulation, all the other structures of second embodiment are identical with first embodiment, when on-load voltage not, the surface of contact of second liquid 8 and first liquid 10 is planes, i.e. first liquid level 4, when cutting off 9 at first conductive electrode 2 and centre, between second conductive electrode 6 during on-load voltage, second liquid 8 will cut off 9 with the centre successively, second conductive electrode 6 soaks into, thereby produces the second bigger liquid level 3 of radius-of-curvature.

In the middle of can also being higher than or being lower than, the height of first liquid 10 shown in Fig. 1,2 cuts off 9, thereby realize second liquid 8 and the middle various initial contact angle schemes of cutting off between 9, preferred version of the present invention is highly equal, thereby make first liquid 10 and second liquid 8 when on-load voltage not, surface of contact is the plane.

Cut off 9 in the middle of shown in Fig. 1,2 and be reticulate texture, each mesh is rotational symmetry structure, thereby the surface of contact that guarantees first liquid 10 and second liquid 8 is rotational symmetric hemisphere face, for example aperture inside is cylindrical or the hexagon of trapezoidal or bowl-type of circle or symmetry etc., arranging between the aperture closely, can be the rectangular or product word shape of ranks or cellular etc.

When the surface of contact between first liquid 10 and second liquid 8 was first liquid level 4, thin liquid lens array was operated in the two dimensional image display mode; When the surface of contact between first liquid 10 and second liquid 8 is second liquid level 3, thin liquid lens array is operated in the three-dimensional image display mode, can adopt changeless focal length, also can adopt the mode of time-division, be that periodic duty is in a plurality of fixed focal lengths, thereby time-division ground generation 3-D view on a plurality of fixedly imaging planes of three dimensions, the mode that becomes in the time of can also adopting, be that focal length changes in time, do in the locus correspondingly to change thereby make imaging plane can follow 3-D view.

Claims

1. the thin liquid lens array of a wide angular field of view is characterized in that: go up at first transparency carrier (7) and cut off (9) in the middle of making, middle cut off (9) are reticulate texture, the corresponding liquid lens unit of each mesh; Go up covering hydrophobic layer (5) at first transparency carrier (7) and middle cut off (9), fill first liquid (10) in described mesh, the height of first liquid (10) equates with middle cut off (9); Making first conductive electrode (2) down at second transparency carrier (1), is second liquid (8) under first conductive electrode (2), and second liquid (8) contacts with first liquid (10), and cuts off between (9) and second transparency carrier (1) in the middle of being sealed in; When on-load voltage not, the surface of contact between first liquid (10) and second liquid (8) is first liquid level (4).

2. the thin liquid lens array of a kind of wide angular field of view according to claim 1, it is characterized in that: described thin liquid lens array can also increase one deck second conductive electrode (6) at first transparency carrier (7) and middle the partition between (9), cut off increase by one layer insulating between (9) and second conductive electrode (6) in the centre, cut off on-load voltage between (9), second conductive electrode (6) at first conductive electrode (2) and centre, second liquid (8) is soaked into mutually with centre partition (9), second conductive electrode (6) successively.

3. the thin liquid lens array of a kind of wide angular field of view according to claim 1 is characterized in that: can also increase one deck dielectric layer at first transparency carrier (7) and middle the partition on (9), cover hydrophobic layer (5) again on this dielectric layer.

4. the thin liquid lens array of a kind of wide angular field of view according to claim 1, it is characterized in that: cut off in the middle of the height of first liquid (10) can also be higher than or be lower than (9), thereby realize second liquid (8) and the middle various initial contact angle schemes of cutting off between (9).

5. the thin liquid lens array of a kind of wide angular field of view according to claim 1, it is characterized in that: middle cut off (9) are reticulate texture, each mesh is rotational symmetry structure, mesh inside can be cylindrical or circle is trapezoidal or the hexagon of bowl-type or symmetry, and the arrangement mode of mesh can be the rectangular or product word shapes or cellular of ranks.

6. the thin liquid lens array of a kind of wide angular field of view according to claim 1, it is characterized in that: thin liquid lens array can be operated in two dimensional image display mode and three-dimensional image display mode, under the three-dimensional image display mode, according to the variation of focal length comprise fixed focal length mode, time division way and the time become mode.