Motor vehicle
US-2024011616-A1 · Jan 11, 2024 · US
Lens system and method for eliminating sun focusing thermal effects in lamps
US9377171B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9377171-B2 |
| Application number | US-201414449227-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 1, 2014 |
| Priority date | Aug 1, 2014 |
| Publication date | Jun 28, 2016 |
| Grant date | Jun 28, 2016 |
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- Title
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Abstract
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An infrared energy reflecting lens system for a lamp subjectable to sunlight is provided. The lens system includes a lens having an exterior surface and a dichroic coating on the exterior surface of the lens so that at least a portion of the infrared energy content of sunlight is reflected from entering the lens.
First claim
Opening claim text (preview).
The invention claimed: 1. An infrared energy reflecting lens system for a lamp subjectable to sunlight, comprising: a lens having an exterior surface; and a dichroic coating on the exterior surface of the lens so that at least a portion of the infrared energy content of sunlight is reflected from entering the lens. 2. The infrared energy reflecting lens system of claim 1 , wherein the dichroic coating transmits visible light. 3. The infrared energy reflecting lens system of claim 1 , wherein the lens is a condensing lens. 4. The infrared energy reflecting lens system of claim 1 , wherein the lens is a projection system lens of a vehicle lamp. 5. The infrared light reflecting lens system of claim 3 , wherein the lens is a projection system lens of a vehicle lamp. 6. A vehicle subjectable to sunlight, comprising: a lamp having: a projection system including a lens having an exterior surface; and a dichroic coating on the exterior surface of the lens so that at least a portion of the infrared energy content of sunlight is reflected from entering the lens. 7. The vehicle of claim 6 , wherein the lamp includes an internal light source; and wherein the dichroic coating transmits at least a portion of the visible light from the internal light source. 8. The vehicle of claim 7 , wherein the dichroic coating transmits at least a portion of the visible light content of sunlight. 9. The vehicle of claim 7 , wherein the lens is a condensing lens. 10. The vehicle of claim 7 , wherein the lamp includes a bezel; and wherein the dichroic coating prevents at least a portion of the infrared energy content of sunlight from passing through the lens and onto the bezel. 11. A method for preventing the infrared energy content of sunlight from thermally affecting a surface adjacent to a lens of a vehicle lamp, comprising: coating an exterior surface of the lens with a dichroic coating to reflect at least a portion of the infrared energy content of sunlight. 12. The method of claim 11 , further comprising reflecting all of the infrared energy content of sunlight. 13. The method of claim 11 , further comprising transmitting at least a portion of the visible light from an internal light source in the vehicle lamp. 14. The method of claim 13 , wherein transmitting includes transmitting at least a portion of the visible light content of sunlight.
Assignees
Inventors
Classifications
Protection of lighting devices (cooling of lighting devices F21S45/40; waterproofing of lighting devices F21S45/50) · CPC title
- F21S41/255Primary
Lenses with a front view of circular or truncated circular outline · CPC title
Lens surfaces, e.g. coatings or surface structures · CPC title
- F21V5/04Primary
of lens shape · CPC title
- F21S48/31Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9377171B2 cover?
- An infrared energy reflecting lens system for a lamp subjectable to sunlight is provided. The lens system includes a lens having an exterior surface and a dichroic coating on the exterior surface of the lens so that at least a portion of the infrared energy content of sunlight is reflected from entering the lens.
- Who is the assignee on this patent?
- Gm Global Tech Operations Inc
- What technology area does this patent fall under?
- Primary CPC classification F21S41/255. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 28 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).