1. An electronic apparatus, comprising:
a casing comprising a first air-inlet and a first air-outlet, wherein a first passage is formed between the first air-inlet and the first air-outlet;
an optical module disposed in the casing, the optical module having a first light source and a second light source;
a first heat-dissipation device, disposed on the first passage and connected to the first light source;
a second heat-dissipation device, disposed on the first passage and connected to the second light source; and
a first fan, disposed between the first heat-dissipation device and the second heat-dissipation device on the first passage, the first fan generating a first air-flow passing through the first heat-dissipation device and the second heat-dissipation device.
2. The electronic apparatus of claim 1, further comprising a power supply module disposed between the second heat-dissipation device and the first air-outlet.
3. The electronic apparatus of claim 1, wherein the casing further comprises a second air-inlet and a second air-outlet, and a second passage is formed between the second air-inlet and the second air-outlet, the optical module comprises a third light source, the electronic apparatus further comprises:
a third heat-dissipation device disposed on the second passage and connected to the third light source; and
a second fan disposed on the second passage, the second fan generates a second air-flow passing through the third heat-dissipation device,
wherein the first passage and the second passage are substantially parallel.
4. The electronic apparatus of claim 3, wherein the first passage and the second passage are a straight passage respectively, the casing has a first side, a second side, and a third side, the third side is adjacent to the first side and the second side, and a camera lens is disposed on the third side, the first side and the second side are oppositely disposed, the second air-inlet and the second air-outlet are correspondingly disposed at the first side and the second side respectively, the second fan is adjacent to the second air-inlet, the first light source is connected to the first heat-dissipation device in a heat pipe guiding way, the second light source is connected to the second heat-dissipation device in the heat pipe guiding way, the third light source is connected to the third heat-dissipation device in the heat pipe guiding way, the first heat-dissipation device, the second heat-dissipation device, and the third heat-dissipation device respectively comprise a plurality of fins, length directions of the plurality of fins are substantially parallel to the directions of the first air-flow and the second air-flow.
5. The electronic apparatus of claim 3, further comprising a third fan disposed in the casing and adjacent to the second air-outlet, wherein the third fan and the second fan guide the second air-flow together.
6. The electronic apparatus of claim 3, further comprising an optical engine and a driving module, wherein the optical engine is disposed between the third heat-dissipation device and the second air-outlet, the driving module is disposed beyond the third heat-dissipation device or below the third heat-dissipation device.
7. The electronic apparatus of claim 3, further comprising a fourth heat-dissipation device disposed between the second fan and the third heat-dissipation device, wherein the first light source is connected to the first heat-dissipation device and the fourth heat-dissipation device respectively.
8. The electronic apparatus of claim 3, further comprising a fifth heat-dissipation device disposed between the first fan and the first heat-dissipation device, wherein the second light source is connected to the second heat-dissipation device and the fifth heat-dissipation device respectively.
9. The electronic apparatus of claim 1, further comprising a fourth fan, wherein the fourth fan and the first fan guide the first air-flow together, the first air-flow passes through the first heat-dissipation device, the first fan, the second heat-dissipation device, and the fourth fan, the fourth fan is adjacent to the first air-outlet.
10. The electronic apparatus of claim 1, wherein an open space is existed between the first heat-dissipation device and the second heat-dissipation device, the open space corresponds to the second light source and used for containing the first fan, if the first fan is not assembled yet, a user can assemble or disassemble the second light source via the open space.
11. A projector, comprising:
a casing comprising a first air-inlet, a second air-inlet, a first air-outlet, and a second air-outlet, wherein a first passage is formed between the first air-inlet and the first air-outlet, a second passage is formed between the second air-inlet and the second air-outlet;
an optical module disposed in the casing, the optical module having a first light source and a second light source;
a first heat-dissipation device, disposed on the first passage and connected to the first light source;
a second heat-dissipation device, disposed on the second passage and connected to the second light source;
a first fan, disposed on the first passage, the first fan generating a first air-flow passing through the first heat-dissipation device; and
a second fan, disposed on the second passage, the second fan generating a second air-flow passing through the second heat-dissipation device.
12. The projector of claim 11, further comprising a power supply module disposed between the first heat-dissipation device and the first air-outlet.
13. The projector of claim 11, further comprising a third heat-dissipation device, wherein the optical module comprises a third light source, the third heat-dissipation device is disposed on the first passage and connected to the third light source, the first light source is connected to the first heat-dissipation device in a heat pipe guiding way, the second light source is connected to the second heat-dissipation device in the heat pipe guiding way, the third light source is connected to the third heat-dissipation device in the heat pipe guiding way.
14. The projector of claim 13, further comprising a fourth heat-dissipation device, wherein the third light source is connected to the third heat-dissipation device and the fourth heat-dissipation device respectively.
15. The projector of claim 11, further comprising:
a third fan disposed in the casing and adjacent to the second air-outlet, wherein the third fan and the second fan guide the second air-flow together; and
a fourth fan, wherein the fourth fan and the first fan guide the first air-flow together, the first air-flow passes through the third heat-dissipation device, the first fan, the first heat-dissipation device, and the fourth fan, the fourth fan is adjacent to the first air-outlet.
16. The projector of claim 11, further comprising an optical engine and a driving module, wherein the optical engine is disposed between the second heat-dissipation device and the second air-outlet, the driving module is disposed beyond the second heat-dissipation device or below the second heat-dissipation device.
17. A projector, comprising:
a casing comprising a first air-inlet and a first air-outlet, wherein a first passage is formed between the first air-inlet and the first air-outlet;
an optical module disposed on the first passage, the optical module having a first light source;
a first heat-dissipation device, disposed on the first passage and connected to the first light source; and
a first fan, disposed on the first passage, the first fan generating a first air-flow passing through the first heat-dissipation device and the optical module.
18. The projector of claim 17, wherein the casing comprises a second air-inlet and a second air-outlet, and a second passage is formed between the second air-inlet and the second air-outlet, the optical module comprises a second light source, the projector further comprises:
a second heat-dissipation device disposed on the second passage and connected to the second light source; and
a second fan disposed on the second passage, the second fan generates a second air-flow passing through the third heat-dissipation device, wherein the first passage and the second passage are substantially parallel.
19. The projector of claim 18, wherein the optical module comprises a third light source, the projector further comprises a third heat-dissipation device disposed on the second passage and connected to the third light source, wherein the second fan is disposed between the second heat-dissipation device and the first heat-dissipation device.
20. The projector of claim 18, further comprising:
a third fan disposed in the casing and adjacent to the second air-outlet, wherein the third fan and the second fan guide the second air-flow together; and
a fourth fan disposed in the casing and adjacent to the first air-outlet, wherein the fourth fan and the first fan guide the first air-flow together.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for characterizing the perceived visual quality of a holographic material, which, when illuminated, produces diffracted light and scattered light, the method comprising:
directing light from a collimated white light source onto the holographic material;
performing a measurement of the diffracted light;
performing a measurement of the scattered light; and
comparing said measurement of diffracted light and measurement of scattered light to measurements for like holographic materials.
2. The method of claim 1, wherein said measurement of diffracted light is a measurement of first order diffracted light.
3. The method of claim 1, further comprising the steps of
directing a portion of the diffracted and the scattered light onto a surface;
creating an image of said surface with a CCD array; said image representing light intensity, and measuring a portion of said image to perform said measurements of the diffracted light and the scattered light.
4. The method of claim 3, wherein said image comprises red, green and blue images and said measurements are performed separately for each of said red, green and blue images.
5. The method of claim 3 wherein said image of said surface is broken into a plurality of elements and each element is measured to perform said measurements of the diffracted light and the scattered light.
6. The method of claim 5, wherein said plurality of elements is comprised of sections of annular elements.
7. The method of claim 5, wherein said plurality of elements is comprised of rectangular elements.
8. A method for characterizing the perceived visual quality of a holographic material, which, when illuminated, produces diffracted light and scattered light, the method comprising:
directing light from a collimated white light source onto the holographic material;
projecting the diffracted and the scattered light onto a scattering surface;
creating an image of the diffracted and scattered light projected onto a scattering surface;
measuring said image to produce a measurement of the diffracted light and a measurement of the scattered light; and
comparing said measurement of diffracted light and measurement of scattered light to measurements for like holographic materials.
9. The method of claim 8, wherein said image is created with a CCD.
10. The method of claim 8, wherein said image is created of red, green and blue components of said light projected onto a scattering surface.
11. An apparatus for characterizing the perceived visual quality of a holographic material which, when illuminated, produces diffracted light and scattered light, comprising:
a white light source to produce a collimated light beam;
a scattering surface; and
a light measurement device,
wherein said collimated white light beam is directed to the holographic material, the diffracted light and the scattered light are projected onto said scattering surface and said light projected onto said scattering surface is measured with said light measurement device.
12. The apparatus of claim 11, wherein said light measurement device is a CCD.
13. The apparatus of claim 12, wherein said CCD creates an image of said light projected onto said scattering surface, said image comprised of a plurality of pixels, said pixels consisting of pixels representing red, green and blue components of said projected light and said measurement of light projected is performed separately for said red, green and blue components.