CN211346717U - Grating projection device - Google Patents
Grating projection device Download PDFInfo
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- CN211346717U CN211346717U CN201922170340.XU CN201922170340U CN211346717U CN 211346717 U CN211346717 U CN 211346717U CN 201922170340 U CN201922170340 U CN 201922170340U CN 211346717 U CN211346717 U CN 211346717U
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Abstract
The utility model discloses a grating projection arrangement, include: two or more grating/light source assemblies; at least one direct and refraction lens unit for directly irradiating and refracting the grating light emitted by all the grating/light source components; the projection lens projects the grating light rays sent out by the direct-projection and refraction lens unit to form a plurality of grating projections with different phases; the power supply supplies power to all grating/light source components; and the time schedule controller is in control connection with all the grating/light source components and controls the grating/light source components to work according to a certain phase so as to form a plurality of grating projections with different phases. The utility model discloses a time schedule controller and the combination of penetrating directly and refraction lens unit, and carry out the phase grating projection through each grating/light source subassembly of time schedule controller direct control, have the signal of telecommunication level control speed, but the grating projection is switched to the hypervelocity.
Description
Technical Field
The utility model relates to a grating projection technical field, in particular to grating projection arrangement.
Background
Non-contact three-dimensional measurement can be achieved by various techniques. The most common methods include laser scanning, stereovision, and active raster projection. The existing active grating projection mainly adopts DLP grating projection. DLP grating projection has the following problems: the switching speed is slow.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the above-mentioned technical problem that exists to present DLP grating projection provides a grating projection arrangement.
The utility model discloses the technical problem that will solve can realize through following technical scheme:
a grating projection device comprising:
two or more grating/light source assemblies;
at least one direct and refraction lens unit, which directly and refracts the grating light emitted by the two or more grating/light source components;
the projection lens projects the grating light rays sent out by the direct and refraction lens units to form a plurality of grating projections with different phases;
the power supply supplies power to the two or more grating/light source components;
and the time schedule controller is in control connection with the two or more grating/light source assemblies and controls the two or more grating/light source assemblies to work according to a certain phase so as to form the grating projections with different phases.
In a preferred embodiment of the present invention, each grating/light source assembly comprises a light source array and a grating located in the light path of the light source array.
In the utility model discloses a preferred embodiment, penetrate directly and the refraction lens unit is one, grating/light source subassembly is three, penetrate directly and the refraction lens unit is formed by the combination of four right triangle prisms with the mode that the straight flange was pasted to the straight flange, and three grating/light source subassembly is divided and is established on the hypotenuse of three right triangle prism, and the window that goes out is penetrated directly and refracted as the grating light of three grating/light source subassembly to the hypotenuse of another right triangle prism, projection lens sets up the outside of window.
In a preferred embodiment of the present invention, the phases of the grating projections projected by the grating lights of the three grating/light source assemblies are 0 pi, 1/3 pi, 2/3 pi, respectively.
In a preferred embodiment of the present invention, the number of the direct and refractive lens units is three, and the three units are divided into a first direct and refractive lens unit, a second direct and refractive lens unit, and a third direct and refractive lens unit; the number of the grating/light source assemblies is five, and the grating/light source assemblies are divided into a first grating/light source assembly, a second grating/light source assembly, a third grating/light source assembly, a fourth grating/light source assembly and a fifth grating/light source assembly; the first direct-lighting and refraction lens unit and the third direct-lighting and refraction lens unit are formed by combining four right-angled triangular prisms in a mode of pasting straight edges to straight edges, and the second direct-lighting and refraction lens unit is formed by combining two right-angled triangular prisms in a mode of pasting bevel edges to bevel edges; the first grating/light source component, the second grating/light source component and the third grating/light source component are respectively arranged at the hypotenuse of the first straight-edge triangular prism, the hypotenuse of the second straight-edge triangular prism and the outer side of the hypotenuse of the third straight-edge triangular prism in the first direct projection and refraction lens unit, and the hypotenuse of the fourth straight-edge triangular prism in the first direct projection and refraction lens unit is used as a window for directly projecting and refracting out grating light rays of the first grating/light source component, the second grating/light source component and the third grating/light source component; one straight edge of a first straight-edge triangular prism in the second direct lighting and refracting lens unit is attached to the inclined edge of a fourth straight-edge triangular prism in the first direct lighting and refracting lens unit; the fourth grating/light source component and the fifth grating/light source component are respectively arranged outside the hypotenuse of the first straight-side triangular prism and the hypotenuse of the second straight-side triangular prism in the third direct-projection and refraction lens unit; the hypotenuse of the third straight-side triangular prism in the third direct-projection and refraction lens unit is attached to one straight side of the second straight-side triangular prism in the second direct-projection and refraction lens unit and is used as a window for directly projecting and refracting out the grating light of the fourth grating/light source assembly and the fifth grating/light source assembly; and the other straight edge of the second straight-edge triangular prism in the second direct-projection and refraction lens unit is used as a window for directly projecting and refracting out the grating light of the first grating/light source assembly, the second grating/light source assembly, the third grating/light source assembly, the fourth grating/light source assembly and the fifth grating/light source assembly.
In a preferred embodiment of the present invention, the phase of the grating projection projected by the grating light of the first grating/light source assembly, the grating light of the second grating/light source assembly, the grating light of the third grating/light source assembly, the grating light of the fourth grating/light source assembly, and the grating light of the fifth grating/light source assembly is 0 pi, 1/5 pi, 2/5 pi, 3/5 pi, 4/5 pi, respectively.
Since the technical scheme as above is adopted, the utility model discloses a time schedule controller and the combination of penetrating directly and refraction lens unit, and carry out the phase grating projection through each grating of time schedule controller direct control/light source subassembly, have the signal of telecommunication level control speed, but the grating projection is switched to the hypervelocity.
Drawings
Fig. 1 is a schematic diagram of the optical principle of the grating projection apparatus according to embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of phase shift of a grating projection apparatus according to embodiment 1 of the present invention.
Fig. 3 is a schematic diagram of the optical principle of the grating projection apparatus according to embodiment 2 of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1 and 2, the lenticular projection apparatus shown in the drawings includes three lenticular/ light source assemblies 10, 20, and 30, a direct and refractive lens unit 40, a projection lens 50, a power supply 60, and a timing controller 70.
Each grating/ light source assembly 10, 20, 30 includes a light source array a and a grating b positioned in the optical path of the light source array a.
The direct and refractive lens unit 40 is formed by combining four right-angled triangular prisms 41, 42, 43, 44 in a straight-edge-to-straight-edge manner. The gratings/light source assemblies 10, 20, and 30 are respectively disposed outside the hypotenuses 41a, 42a, and 43a of the right-angled triangular prisms 41, 42, and 43, and the hypotenuse 44a of the right-angled triangular prism 44 is used as a window for the grating light of the gratings/ light source assemblies 10, 20, and 30 to be directly and refracted out.
The projection lens 50 is located outside the hypotenuse 44a of the right triangle prism 44, and the projection lens 50 projects the light from the grating sent from the direct and refractive lens unit 40 to form a plurality of different phase grating projections.
Example 2
Referring to fig. 3, the lenticular projection apparatus shown in the figure includes five lenticular/ light source assemblies 10, 20, 30, 10a, 20a, three direct and refractive lens units 40, 40b, 40c, a projection lens 50, a power supply 60, and a timing controller 70.
Each grating/ light source assembly 10, 20, 30, 10a, 20a includes a light source array a and a grating b positioned in the optical path of the light source array a.
The direct and refractive lens unit 40 is formed by combining four right-angled triangular prisms 41, 42, 43, 44 in a manner of pasting straight edges to straight edges, the grating/ light source assemblies 10, 20, 30 are respectively arranged outside the hypotenuses 41a, 42a, 43a of the right-angled triangular prisms 41, 42, 43, and the hypotenuse 44a of the right-angled triangular prism 44 is used as a window for the grating light of the grating/ light source assemblies 10, 20, 30 to be directly radiated and refracted out.
The direct and refractive lens unit 40b is formed by combining four right-angled triangular prisms 41b, 42b, 43b, 44b in a manner of pasting straight edges. The grating/ light source assemblies 10a and 20a are respectively disposed outside the hypotenuses 41ba and 42ba of the right-angled triangular prisms 41b and 42b, and the hypotenuse 43ba of the right-angled triangular prism 43b is used as a window for the grating light of the grating/ light source assemblies 10a and 20a to be directly emitted and refracted out.
The direct and refractive lens unit 40c is formed by combining two right-angled triangular prisms 41c, 42c in a manner that the hypotenuse is attached to the hypotenuse, one straight edge 41ca of the right-angled triangular prism 41c is attached to the hypotenuse 44a of the right-angled triangular prism 44, one straight edge 42ca of the right-angled triangular prism 42c is attached to the hypotenuse 43ba of the right-angled triangular prism 43b, and the other straight edge 42cb of the right-angled triangular prism 42c serves as a window for the direct and refractive light of the grating light of the five grating/light source assemblies 10, 20, 30, 10a, 20 a.
Claims (6)
1. A raster projection apparatus, comprising:
two or more grating/light source assemblies;
at least one direct and refraction lens unit, which directly and refracts the grating light emitted by the two or more grating/light source components;
the projection lens projects the grating light rays sent out by the direct and refraction lens units to form a plurality of grating projections with different phases;
the power supply supplies power to the two or more grating/light source components;
and the time schedule controller is in control connection with the two or more grating/light source assemblies and controls the two or more grating/light source assemblies to work according to a certain phase so as to form the grating projections with different phases.
2. The grating projection device of claim 1, wherein each grating/light source module comprises an array of light sources and a grating positioned in the optical path of the array of light sources.
3. The grating projection device as claimed in claim 1 or 2, wherein the number of the direct and refractive lens units is one, the number of the grating/light source units is three, the direct and refractive lens units are formed by combining four right-angled triangular prisms in a manner that straight edges are attached to straight edges, three grating/light source units are respectively arranged on the oblique edges of the three right-angled triangular prisms, the oblique edge of the other right-angled triangular prism is used as a window for the grating light of the three grating/light source units to be directly projected and refracted, and the projection lens is arranged outside the window.
4. A grating projection device as claimed in claim 3, wherein the phases of the grating projections projected by the grating light of the three grating/light source modules are 0 pi, 1/3 pi and 2/3 pi, respectively.
5. The grating projection apparatus of claim 1 or 2, wherein the directing and refracting lens units are three, and are divided into a first directing and refracting lens unit, a second directing and refracting lens unit, and a third directing and refracting lens unit; the number of the grating/light source assemblies is five, and the grating/light source assemblies are divided into a first grating/light source assembly, a second grating/light source assembly, a third grating/light source assembly, a fourth grating/light source assembly and a fifth grating/light source assembly; the first direct-lighting and refraction lens unit and the third direct-lighting and refraction lens unit are formed by combining four right-angled triangular prisms in a mode of pasting straight edges to straight edges, and the second direct-lighting and refraction lens unit is formed by combining two right-angled triangular prisms in a mode of pasting bevel edges to bevel edges; the first grating/light source component, the second grating/light source component and the third grating/light source component are respectively arranged at the hypotenuse of the first straight-edge triangular prism, the hypotenuse of the second straight-edge triangular prism and the outer side of the hypotenuse of the third straight-edge triangular prism in the first direct projection and refraction lens unit, and the hypotenuse of the fourth straight-edge triangular prism in the first direct projection and refraction lens unit is used as a window for directly projecting and refracting out grating light rays of the first grating/light source component, the second grating/light source component and the third grating/light source component; one straight edge of a first straight-edge triangular prism in the second direct lighting and refracting lens unit is attached to the inclined edge of a fourth straight-edge triangular prism in the first direct lighting and refracting lens unit; the fourth grating/light source component and the fifth grating/light source component are respectively arranged outside the hypotenuse of the first straight-side triangular prism and the hypotenuse of the second straight-side triangular prism in the third direct-projection and refraction lens unit; the hypotenuse of the third straight-side triangular prism in the third direct-projection and refraction lens unit is attached to one straight side of the second straight-side triangular prism in the second direct-projection and refraction lens unit and is used as a window for directly projecting and refracting out the grating light of the fourth grating/light source assembly and the fifth grating/light source assembly; and the other straight edge of the second straight-edge triangular prism in the second direct-projection and refraction lens unit is used as a window for directly projecting and refracting out the grating light of the first grating/light source assembly, the second grating/light source assembly, the third grating/light source assembly, the fourth grating/light source assembly and the fifth grating/light source assembly.
6. The grating projection device of claim 5, wherein the phases of the grating projections projected by the grating light of the first grating/light source assembly, the grating light of the second grating/light source assembly, the grating light of the third grating/light source assembly, the grating light of the fourth grating/light source assembly, and the grating light of the fifth grating/light source assembly are 0 pi, 1/5 pi, 2/5 pi, 3/5 pi, and 4/5 pi, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922170340.XU CN211346717U (en) | 2019-12-06 | 2019-12-06 | Grating projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922170340.XU CN211346717U (en) | 2019-12-06 | 2019-12-06 | Grating projection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211346717U true CN211346717U (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922170340.XU Active CN211346717U (en) | 2019-12-06 | 2019-12-06 | Grating projection device |
Country Status (1)
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|---|---|
| CN (1) | CN211346717U (en) |
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2019
- 2019-12-06 CN CN201922170340.XU patent/CN211346717U/en active Active
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