Optical device
Patent Information
- Application Number
- TW115201121
- Authority / Receiving Office
- TW · TW
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-02-03
- Publication Date
- 2026-08-11
- Estimated Expiration
- 2036-02-02
Smart Images
Figure TWG2TB001906175_001 
Figure TWG2TB001906175_002 
Figure TWG2TB001906175_003
Abstract
Claims
1. An optical device comprising: a light source configured to provide a long-wavelength visible light; and an optical lens disposed on one side of the light source, comprising an input region, a guiding layer, and an output region; wherein, The light ingress region is formed on one side edge of the optical lens to couple the long-wavelength visible light into the light guiding layer; the light guiding layer is configured to conduct the long-wavelength visible light within the optical lens by total internal reflection; and the light egress region is located in a peripheral ring region surrounding the central optical region of the optical lens and includes a light egress structure to form a spatially substantially uniform and dispersed emission distribution of the long-wavelength visible light in the peripheral ring region.
2. The optical device as described in claim 1, wherein, The dominant wavelength of this long-wavelength visible light is between 620 nanometers and 750 nanometers.
3. The optical device as described in claim 1, wherein, The dominant wavelength of this long-wavelength visible light is between 650 nanometers and 700 nanometers.
4. The optical device as described in claim 1, wherein, The output power density of the long-wavelength visible light in one of the peripheral pupillary ring regions is between 0.05 mW / cm² and 0.5 mW / cm².
5. The optical device as described in claim 4, wherein, The output power density is between 0.1 mW / cm² and 0.3 mW / cm².
6. The optical device as described in claim 1, wherein, The uniformity of emitted illuminance of the long-wavelength visible light emitted from the peripheral iridosphere of the optical lens is defined by a ratio of a maximum illuminance to a minimum emitted illuminance within the peripheral iridosphere, and the ratio is less than or equal to 2.
7. The optical device as described in claim 1, wherein, The average outgoing illuminance of the long-wavelength visible light emitted along the central axis of one of the central optical zones is less than or equal to 20% of the average outgoing illuminance of the long-wavelength visible light located in the peripapillary ring region.
8. The optical device as described in claim 1, wherein, The optical output structure is arranged in a non-periodic and quasi-random distribution within the optical output region.
9. The optical device as claimed in claim 1, wherein, The distribution method is selected from blue noise characteristics, Poisson-disk distribution, or a combination thereof.
10. The optical device as claimed in claim 1, wherein, The equivalent size of this optical output coupling structure is between 2 micrometers and 50 micrometers.
11. The optical device as described in claim 1, wherein, The fill rate of the optical excoupling structure in one of the optical excoupling regions is between 10% and 40%.
12. The optical device as described in claim 8, wherein, The distribution density of the optical output structure varies with its radial position relative to the central optical region to compensate for the attenuation of the transmission of the long-wavelength visible light.
13. The optical device as described in claim 12, wherein, The optical output structure located at a greater distance from the light source has a higher distribution density.
14. The optical device as described in claim 8, wherein, The optical output region is divided into multiple sub-regions along the radial direction, and the optical output structure in each sub-region has a different distribution density.
15. The optical device as claimed in claim 8, wherein, The optical excoupling structure has different distribution densities in the temporal and nasal directions.
16. The optical device as claimed in claim 1, wherein, The optical output coupling structure is formed on the surface or inside the optical lens.
17. The optical device as claimed in claim 16, wherein, The optical excoupling structure includes a surface relief structure, a refractive index modulation structure, a thin film refractive layer, or a combination thereof.
18. The optical device as claimed in claim 17, wherein, The thin film refractive layer contains titanium dioxide (TiO2), aluminum oxide (Al2O3), or a combination thereof.
19. The optical device as claimed in claim 1, wherein, The optical coupling region also forms an coupling microstructure, which is designed to have a complex range of incident angles so that the long-wavelength visible light can be coupled into the optical guiding layer under different incident conditions.
20. The optical device as claimed in claim 19, wherein, The permissible range of the incident angle covers at least ±5 degrees relative to the surface normal direction of the optical coupling region.
21. The optical device as claimed in claim 19, wherein, The permissible range of the incident angle covers at least ±10 degrees relative to the surface normal direction of the optical coupling region.
22. The optical device as claimed in claim 19, wherein, The coupled microstructure is formed by a grating structure and an angular phase modulation structure arranged in a non-periodic and quasi-random distribution.
23. The optical device as claimed in claim 1, wherein, The refractive index of the light guiding layer is higher than that of the structure adjacent to the light guiding layer of the optical lens, and the light guiding layer is formed of a transparent material.
24. The optical device as described in claim 23, wherein, The light guiding layer is composed of one or a combination of cyclic olefin copolymer (COC), cyclic olefin polymer (COP), and polymethyl methacrylate (PMMA).
25. The optical device as claimed in claim 1, wherein, The optical lens also includes a refractive index gradient layer disposed between the light guiding layer and the light output region.
26. The optical device as claimed in claim 1, wherein, The optical lens also includes a filter layer disposed on the front surface of the optical lens, which allows light with wavelengths from 550 nanometers to 700 nanometers to pass through.
27. The optical device as claimed in claim 1, wherein, The optical lens also includes at least one ophthalmic optical control structure, and the at least one ophthalmic optical control structure is formed in the peripapillary ring region.
28. The optical device as described in claim 27, wherein, The at least one ophthalmic optical control structure includes a first annular freeform surface structure and a second annular freeform surface structure. The first annular freeform surface structure surrounds the central optical region, and the second annular freeform surface structure surrounds the first annular freeform surface structure.
29. The optical device as described in claim 28, wherein, The first and second annular freeform surface structures provide different values of positive spherical aberration.
30. The optical device as claimed in claim 28, wherein, The regions where the first annular freeform surface structure and the second annular freeform surface structure are adjacent to each other have continuous first-order curvature and second-order curvature.
31. The optical device as described in claim 27, wherein, The at least one ophthalmic optical control structure includes one or a combination of complex scattering materials, a one-micron pore structure, a one-nano pore structure, or the like.
32. The optical device as claimed in claim 27, wherein, The at least one eye optical control structure is configured to reduce the contrast of the surrounding high spatial frequencies.
33. The optical device as claimed in claim 1, wherein, The equivalent diameter of the central optical zone is between 3 mm and 6 mm.
34. The optical device as claimed in claim 1, wherein, The equivalent diameter of the optical lens is between 12 mm and 75 mm.
35. The optical device as described in claim 34, wherein, The optical lens is a spectacle lens.
36. The optical device as described in claim 34, wherein, The optical lens is a contact lens.
37. The optical device as claimed in claim 1, wherein, The light source is selected from one of the following: light-emitting diode (LED), mini-LED, micro-LED, or laser diode (LD).