# US 8,770,803 B2 · Reflective cover molding method and reflective cover manufactured thereof

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- Number: US 8,770,803 B2
- Document ID: US8770803B2
- Status: Granted
- Kind: B2
- Application number: 13/675,291
- Filed: 2012-11-13
- Published: 2014-05-15
- Granted: 2014-07-08
- Earliest claimed: 2012-11-13
- Assignees: Ledlink Optics, Inc.; Ledlink Optics (Dong Guan) Co., Ltd.; Yang Zhou Ledlink Optics Co., Ltd.
- Applicants: Ledlink Optics, Inc.; Ledlink Optics (Dong Guan) Co., Ltd.; Yang Zhou Ledlink Optics Co., Ltd.
- Inventors: Te-Lung Tang; Wei-Chiang Huang
- Web page: https://patentgrep.com/patent/US8770803B2

## CPC

- B29D 11/00596: {Mirrors}
- F21V 7/048: {with facets structure}
- F21V 7/24: characterised by the material
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR

## Abstract

A reflective cover molding method and a reflective cover manufactured thereof are disclosed. The reflective cover molding method comprises the steps of: providing a metal substrate; setting the metal substrate on a substrate mold, and punching the metal substrate by a pressure to form a circular substrate; propping the circular substrate onto a fixed mold with a prop; jointly rotating the fixed mold and the circular substrate, applying a pressure by a spinning roller to attach the circular substrate, and applying a pressure to spin out a molded cover; setting the molded cover onto a shaped mold, and punching the molded cover by a pressure to form an optical structure surface on the molded cover; and punching the molded cover to remove a bottom hole to form the reflective cover, so as to accelerate production rate and enhance product quality, stability and precision.

## Claims

### Claim 1

A reflective cover molding method, for manufacturing a reflective cover, comprising the steps of:
providing a metal substrate;
setting the metal substrate on a substrate mold, and punching the metal substrate by a pressure to form a circular substrate;
propping the circular substrate onto a fixed mold by a propping column;
jointly rotating the fixed mold and the circular substrate, applying a pressure by a spinning roller to attach the circular substrate, and applying a pressure to spin out a molded cover;
setting the molded cover onto a shaped mold, and punching the molded cover by a pressure to form an optical structure surface on the molded cover; and
punching the molded cover to remove a bottom hole to form the reflective cover.

### Claim 2 (depends on 1)

The reflective cover molding method of claim 1, further comprising the step of:
forming the circular substrate with an inner hole after the metal substrate is punched by a pressure.

### Claim 3 (depends on 1)

The reflective cover molding method of claim 1, wherein the step of attaching the jointly rotated the fixed mold and the circular substrate onto the circular substrate by applying a pressure from a spinning roller to spin out a molded cover further comprises the step of applying a pressure to spin and form the molded cover with an inner sidewall and an outer sidewall on the circular substrate, when the spinning roller approaches the circular substrate by applying a pressure.

### Claim 4 (depends on 3)

The reflective cover molding method of claim 3, wherein the step of setting the molded cover onto a shaped mold and applying a pressure to punch the molded cover to form an optical structure surface on the molded cover further comprises the step of forming the optical structure surface on the inner sidewall of the molded cover.

### Claim 5 (depends on 3)

The reflective cover molding method of claim 3, further comprising the step of executing a polishing process to the inner sidewall of the molded cover, after the bottom hole is cut from the molded cover.

### Claim 6 (depends on 5)

The reflective cover molding method of claim 5, further comprising the step of:
executing an anode processing on the surface of the molded cover to form an oxide film layer after the polishing process is performed on the inner sidewall of the molded cover.

### Claim 7 (depends on 3)

The reflective cover molding method of claim 3, wherein the step of setting the molded cover onto a shaped mold and applying a pressure to punch the molded cover in order to form an optical structure surface on the molded cover comprises the step of forming the optical structure surface on the inner sidewall of the molded cover, and the optical structure surface is a spiral grid structure, a rhombus grid structure, a rectangular grid structure or a hexagonal grid structure.

### Claim 8 (depends on 1)

A reflective cover manufactured by the reflective cover molding method according to claim 1, comprising: a molded cover and a bottom hole, and the bottom hole being set at the bottom of the molded cover, and an optical structure surface being formed on an inner sidewall of the molded cover.

### Claim 9 (depends on 8)

The reflective cover of claim 8, wherein the optical structure surface is a spiral grid structure, a rhombus grid structure, a rectangular grid structure or a hexagonal grid structure.