CN207817247U - A kind of light guide plate and down straight aphototropism mode set - Google Patents
A kind of light guide plate and down straight aphototropism mode set Download PDFInfo
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- CN207817247U CN207817247U CN201820218518.6U CN201820218518U CN207817247U CN 207817247 U CN207817247 U CN 207817247U CN 201820218518 U CN201820218518 U CN 201820218518U CN 207817247 U CN207817247 U CN 207817247U
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- light
- guide plate
- substrate
- light guide
- groove
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Abstract
The utility model discloses a kind of light guide plate and down straight aphototropism mode set, it includes the substrate for being arranged above light source, the light-emitting surface of the substrate is provided with several sequentially connected grooves, the incidence surface of the substrate is provided with several sites, the groove is for being totally reflected some light injected from the incidence surface, it is projected for receiving the light being totally reflected from the groove and being mixed into white light back reflection to the light-emitting surface site, to which the light projected from the light source is combined into white light, effectively solve chromatic dispersion problem, realize the effect of uniform source of light not colour cast.
Description
Technical field
The utility model is related to back light model setting technology field more particularly to a kind of light guide plate and down straight aphototropism mode sets.
Background technology
Often occurs the dispersion of light in life.White light is complex light, and complex light is resolved into when the process of coloured light is exactly light
Dispersion.In down straight aphototropism mode set, light is sent out to be incident on after the surfaces LENS carry out repeatedly refraction reflection by LED and be projected,
LENS can with diffusing light, increase light-emitting angle, but when light is emitted through the surfaces LENS, also will produce dispersion, can by chromatic dispersion principle
Know, blue light refractive index is big, and emergent ray is low-angle, therefore lamp region is partially blue；Yellow light refractive index is small, and emergent ray is wide-angle,
Therefore region is partially yellow between lamp.Yellow light intersects with blue light, causes brightness unevenness in visual effect, lamp shadow weight and colour cast problem, seriously affects
Optics is sampled.
Therefore, the existing technology needs to be improved and developed.
Utility model content
The technical problem to be solved by the present invention is to for the drawbacks described above of the prior art, provide a kind of light guide plate
And down straight aphototropism mode set, it is intended to which solving LENS lens emergent ray generation dispersion in the prior art causes visual effect is non-uniform to ask
Topic.
The utility model technical scheme applied to solve the technical problem is as follows：
A kind of light guide plate comprising the substrate for being arranged above light source, wherein the light-emitting surface of the substrate is provided with
Several sequentially connected grooves, the incidence surface of the substrate are provided with several sites, the groove be used for from it is described enter
The some light that smooth surface is injected is totally reflected, and the site is for receiving the light being totally reflected from the groove and being mixed into white
Light back reflection to the light-emitting surface projects.
The light guide plate, wherein the substrate is rectangular substrate, length of several described grooves along the rectangular substrate
Direction is set gradually.
The light guide plate, wherein the groove is V-groove.
The light guide plate, wherein the equal length of the two side walls of the V-groove.
The light guide plate, wherein the angle between the side wall and vertical line of the V-groove is less than 48 °.
The light guide plate, wherein substrate is PMMA plates.
The light guide plate, wherein the value range of the refractive index of the PMMA plates is 1.4 ~ 1.5.
The light guide plate, wherein the site is circular pit.
The light guide plate, wherein there is gap between the two neighboring site.
A kind of down straight aphototropism mode set comprising the diffuser plate above the light source is arranged in light source, further includes as above
Light guide plate described in any one, the diffuser plate is between the light source and the light guide plate.
Advantageous effect：Enter the base from the light that the light source projects from the incidence surface of the substrate in the utility model
The side wall of intralamellar part, and groove described in directive, the groove receives light and makes incidence angle more than the critical angle of the substrate
Light generates total reflection, and reflexes to the site, and the site receives after the light that the groove is totally reflected, Suo Youguang
Line is mixed into white light, and is reflected by the site, and the light-emitting surface is reflexed to, meanwhile, the site changes white light and is mapped to
The incident angle of the light-emitting surface so that the white light being mixed to form can be projected from the light-emitting surface, thus will be from the light source
The light of injection is combined into white light, effectively solves chromatic dispersion problem, realizes the effect of uniform source of light not colour cast.
Description of the drawings
Fig. 1 is the stereogram of light guide plate described in the utility model；
Fig. 2 is the partial sectional view of light guide plate described in the utility model；
Fig. 3 is the part-structure schematic diagram of down straight aphototropism mode set described in the utility model.
Specific implementation mode
To keep the purpose of this utility model, technical solution and advantage clearer, clear, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only used to explain this reality
With novel, it is not used to limit the utility model.
Please refer to Fig. 1-Fig. 3, wherein Fig. 1 is the stereogram of light guide plate described in the utility model；Fig. 2 is this reality
The partial sectional view of the light guide plate described in novel；Fig. 3 is the part-structure of down straight aphototropism mode set described in the utility model
Schematic diagram.
The utility model provides a kind of light guide plate, is applied to down straight aphototropism mode set comprising for being arranged in light source 100
The substrate 1 of top, wherein the light-emitting surface 12 of the substrate 1 is provided with several sequentially connected grooves 13, the substrate 1
Incidence surface is provided with several sites 2, and the groove 13 is for being all-trans to some light injected from the incidence surface 11
It penetrates, the site 2 is for receiving the light being totally reflected from the groove 13 and being mixed into white light back reflection to the light-emitting surface 12
It projects.
The light source 100 includes several LED pieces being arranged in a matrix and several LENS lens, each LED light
Piece is corresponding with a LENS lens, and the LED pieces are wrapped in the LENS lens, and the LENS lens are used for will
The light that the LED pieces project is diffused, to increase light-emitting angle.The light that light-emitting surface 12 through the LENS lens projects
Line enters from the incidence surface 11 of the substrate 1 inside the substrate 1, and groove 13 described in directive, the side wall of the groove 13 connect
It receives light and incidence angle is made to generate total reflection more than the light of the critical angle of the substrate 1, and reflex to the site 2, it is described
Site 2 receives after the light that the groove 13 is totally reflected, and all light are mixed into white light, and are reflected by the site 2,
The light-emitting surface 12 is reflexed to, meanwhile, the site 2 changes the incident angle that white light is mapped to the light-emitting surface 12 so that mixed
Closing the white light formed can project from the light-emitting surface 12, to which the light projected from the light source 100 is combined into white light, have
Effect solves chromatic dispersion problem, realizes the effect of the not colour cast of uniform source of light 100.
Preferably, substrate 1 is PMMA plates, that is, polymethyl methacrylate plate（Poly (methyl methacrylate) plate）；The refraction of the PMMA plates
The value range of rate is 1.4 ~ 1.5, preferably, the refractive index of the PMMA plates is 1.49.
The critical angle of the PMMA plates is 42 °, by the total reflection law of light it is found that when incident ray is more than critical angle,
The side wall of light V-groove described in directive in the substrate 1 can be totally reflected, and light is multiple in the cavity of the PMMA plates
Mixed propagation, in conjunction with white light is formed, to allow white light to be emitted, institute is arranged in the incidence surface 11 of the PMMA plates in the utility model
State site 2, by the site 2 change light the incidence surface 11 reflection angle, and then change light directive described in go out
The incident angle of smooth surface 12, makes light be no longer totally reflected and can be projected from the light-emitting surface 12.
The substrate 1 is rectangular substrate, several described grooves 13 are set gradually along the length direction of the rectangular substrate.
The length direction of the rectangular substrate is parallel to the length direction of the light source 100, and the length direction of the groove 13 is parallel to
The width direction of the rectangular substrate.
The groove 13 is V-groove, i.e., the longitudinal section of the described groove is V-type, and the two neighboring V-groove is connected
It connects, i.e., the side wall of the two neighboring V-groove is connected.
The equal length of the two side walls of the V-groove, and the apex angle of the V-groove is less than 90 °.
Angle between the side wall and vertical line of the V-groove is less than 48 °, the side wall and horizontal plane of the V-groove
Between angle be more than 42 °, just can guarantee that the light that the V-groove side wall is mapped to inside the substrate 1 can generate entirely
Reflection.
Preferably, the depth of the V-groove is 25 μm, the distance between apex angle of the two neighboring V-groove etc.
In the maximum width of V-groove opening.
Further, the value range of the thinner thickness of the substrate 1, the thickness of the substrate 1 is 0.3mm ~ 1mm, with
Minimize the thickness of down straight aphototropism mode set.
The sum of maximum width of opening of several V-grooves is less than the length of the substrate 1, the light source 100
Length be less than several V-grooves the sum of the maximum width of opening.Several described contour arrangements of V-groove, i.e.,
The distance between the bottom surface of each described V-groove and the substrate 1 is sustained height.
There is gap between the two neighboring site 2, the value range of the width in the gap is 35 μm ~ 45 μm, compared with
Good, the width in the gap is 40 μm.
Preferably, the site 2 is circular pit, the circular pit is from the upward concave shape in the lower surface of the substrate 1
At.Since the substrate 1 is located at 100 top of the light source, some light that the light source 100 projects can be recessed by the circle
Enter 1 intracavitary of the substrate behind hole, and the circular pit can be to avoid incident angle be changed, i.e., from the light passed through thereon
The circular pit does not interfere with the incident angle that 1 intracavitary light of the substrate is injected from the light source 100 so that from the light
The light that source 100 is emitted largely can be along the direction perpendicular to 1 bottom surface of the substrate when being incident on the side wall of the V-groove
It is incident.
Further, a diameter of 60 μm of the circular pit, the value range of the depth of the circular pit is 3 μm ~
10μm。
The utility model also provides a kind of down straight aphototropism mode set comprising light source 100 is arranged on the light source 100
The diffuser plate of side, further includes any light guide plate as above, the diffuser plate be located at the light source 100 and the light guide plate it
Between.
Since the substrate 1 is relatively thin, in order to enable the substrate 1 to be fixed on the top of the light source 100, this practicality is new
Diffuser plate 200 is also set up in type above the light source 100, and the diffuser plate 200 is arranged below the substrate 1, is led to
It crosses the diffuser plate 200 and comes substrate 1 described in support.The diffuser plate 200 is rectangle diffuser plate 200, the length side of the substrate 1
To the length direction for being parallel to the diffuser plate 200, and the length of the substrate 1 is equal to the length of the diffuser plate 200.
In conclusion the utility model provides a kind of light guide plate and down straight aphototropism mode set comprising exist for being arranged
Substrate above light source, wherein the light-emitting surface of the substrate is provided with several sequentially connected grooves, and the substrate enters light
Face is provided with several sites, and the groove is for being totally reflected some light injected from the incidence surface, the net
Point is projected for receiving the light being totally reflected from the groove and being mixed into white light back reflection to the light-emitting surface.From the light source
The light of injection enters from the incidence surface of the substrate inside the substrate, and groove described in directive, the side wall of the groove connect
It receives light and incidence angle is made to generate total reflection more than the light of the critical angle of the substrate, and reflex to the site, the net
Point receives after the light that the groove is totally reflected, and all light are mixed into white light, and are reflected by the site, reflex to
The light-emitting surface, meanwhile, the site changes the incident angle that white light is mapped to the light-emitting surface so that the white light being mixed to form
It can be projected from the light-emitting surface, to which the light projected from the light source is combined into white light, effectively solve chromatic dispersion problem, it is real
The effect of existing uniform source of light not colour cast.
Claims (10)
1. a kind of light guide plate comprising the substrate for being arranged above light source, which is characterized in that the light-emitting surface of the substrate is set
It is equipped with several sequentially connected grooves, the incidence surface of the substrate is provided with several sites, and the groove is used for from institute
The some light for stating incidence surface injection is totally reflected, and the site is for receiving the light being totally reflected from the groove and mixing
It is projected at white light back reflection to the light-emitting surface.
2. light guide plate according to claim 1, which is characterized in that the substrate is rectangular substrate, several described groove edges
The length direction of the rectangular substrate is set gradually.
3. light guide plate according to claim 1, which is characterized in that the groove is V-groove.
4. light guide plate according to claim 3, which is characterized in that the equal length of the two side walls of the V-groove.
5. light guide plate according to claim 3, which is characterized in that the angle between the side wall and vertical line of the V-groove
Less than 48 °.
6. light guide plate according to claim 1, which is characterized in that substrate is PMMA plates.
7. light guide plate according to claim 6, which is characterized in that the value range of the refractive index of the PMMA plates be 1.4 ~
1.5。
8. light guide plate according to claim 1, which is characterized in that the site is circular pit.
9. light guide plate according to claim 1, which is characterized in that have gap between the two neighboring site.
10. a kind of down straight aphototropism mode set comprising the diffuser plate above the light source is arranged in light source, which is characterized in that its
Further include the light guide plate as described in claim 1-9 any one, the diffuser plate is between the light source and the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820218518.6U CN207817247U (en) | 2018-02-07 | 2018-02-07 | A kind of light guide plate and down straight aphototropism mode set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820218518.6U CN207817247U (en) | 2018-02-07 | 2018-02-07 | A kind of light guide plate and down straight aphototropism mode set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207817247U true CN207817247U (en) | 2018-09-04 |
Family
ID=63321177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820218518.6U Active CN207817247U (en) | 2018-02-07 | 2018-02-07 | A kind of light guide plate and down straight aphototropism mode set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207817247U (en) |
-
2018
- 2018-02-07 CN CN201820218518.6U patent/CN207817247U/en active Active
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