Lens attached substrate, layered lens structure, camera module, manufacturing apparatus, and manufacturing method
The present technology relates to, for example, a lens attached substrate including a substrate which has a through-hole formed therein and a light shielding film formed on a side wall of the through-hole and a lens resin portion which is formed inside the through-hole of the substrate. The present technology can be applied to, for example, a lens attached substrate, a layered lens structure, a camera module, a manufacturing apparatus, a manufacturing method, an electronic device, a computer, a program, a storage medium, a system, and the like.
1. A lens substrate comprising:
a substrate including a through-hole and a notched portion at a light-emitting end of a sidewall of the through-hole;
a light-shielding film disposed on the side wall of the through-hole; and
a lens portion disposed inside the through-hole of the substrate.
2. The lens substrate according to claim 1 , wherein the light-shielding film includes a black material, wherein the black material includes at least one of carbon black or titanium black.
3. The lens substrate according to claim 1 , wherein the light-shielding film is a metal film including at least one of tungsten or chrome.
4. The lens substrate according to claim 1 , wherein the light-shielding film is a chemical vapor deposition (CVD) film including a plurality of carbon nanotubes.
5. The lens substrate according to claim 1 , wherein the light-shielding film includes an adhesion promoting agent.
6. The lens substrate according to claim 5 , wherein the adhesion promoting agent includes a silane coupling agent.
7. The lens substrate according to claim 1 , wherein a width of a cross-section of the light shielding film contacting the lens portion is less than a depth of the through-hole portion that includes the light-shielding film.
8. The lens substrate according to claim 1 , further comprising:
a carrying portion provided between the lens portion and the sidewall of the through-hole, wherein the light-shielding film is disposed on a light-incident surface of the carrying portion.
9. The lens substrate according to claim 1 , wherein the lens substrate is a first lens substrate, and a stacked plurality of lens substrates including the first lens substrate is included in a layered lens structure.
10. The lens substrate according to claim 9 , wherein the layered lens structure is integrated in a camera module having a sensor substrate that includes an optical sensor.
11. The lens substrate according to claim 1 , wherein the light-shielding film is disposed on at least one of a light-incident surface of the substrate or a light-emitting surface of the substrate.
12. The lens substrate according to claim 11 , further comprising:
a second lens substrate laminated on the lens substrate, wherein the light-shielding film is formed on a portion of at least one of the light-incident surface of the substrate or the light-emitting surface of the substrate above or below a through-hole in the second substrate.
13. The lens substrate according to claim 12 , wherein at least one of the light-incident surface of the substrate or the light-emitting surface of the substrate includes a step portion that includes a portion exposed to the through-hole and a portion not exposed to the through-hole, wherein a height of the step portion is greater than a thickness of the light-shielding film.
14. The lens substrate according to claim 1 , wherein a surface of the light-shielding film is a rough surface.
15. The lens substrate according to claim 14 , wherein the rough surface of the light-shielding film is imparted on the light-shielding film after the light-shielding film has been disposed on the substrate.
16. The lens substrate according to claim 14 , wherein the surface of the light-shielding film includes an aggregation of a material that causes the surface to be uneven.
17. The lens substrate according to claim 14 , wherein a solid element included in a material causes the surface of the light-shielding film to be rough.
18. The lens substrate according to claim 14 , wherein a surface of the substrate on which the light-shielding film is formed is a rough surface causing the surface of the light-shielding film to be rough.
19. The lens substrate according to claim 1 , wherein the light-shielding film is disposed on a portion of the through-hole other than the notched portion of the sidewall of the through-hole.
20. A method of manufacturing a lens substrate, the method comprising:
forming a through-hole and a notched portion at a light-emitting end of a sidewall of the through-hole in a substrate;
forming a light-shielding film on the sidewall of the through-hole; and
forming a lens portion within the through-hole such that the lens portion contacts the light-shielding film formed on the sidewall of the through-hole.
21. An electronic apparatus comprising:
a plurality of lens substrates, each lens substrate of the plurality of substrates including:
a substrate including a through-hole and a notched portion at a light-emitting end of a sidewall of the through-hole;
a light-shielding film disposed on the sidewall of the through-hole;
a lens portion disposed inside the through-hole of the substrate; and
a sensor substrate that includes an optical sensor.