A logo projector, also known as a custom logo projection light, works on the principle of using a light source and a lens to project an image or a logo onto a surface. Here’s how it typically works:

### Components of a Logo Projector:

1. **Light Source**:
- Usually, LED lights are used because they are bright, energy-efficient, and produce less heat compared to traditional bulbs. The brightness of the LED determines how clear and visible the projected logo will be.

2. **Lens**:
- A lens is used to focus the light from the LED source into a concentrated beam. The type of lens (e.g., convex lens like a magnifying glass or a camera lens) determines how the light is directed and how clear the projected image will be.

3. **Logo or Image**:
- The logo or image to be projected is typically printed on a transparency sheet or a stencil. This material allows light to pass through the areas where the logo is printed, while blocking light where it's not, creating the projected image.

### How It Works:

1. **Light Source Placement**:
- The LED light source is positioned within the projector housing. It emits light towards the lens.

2. **Lens Positioning**:
- The lens is placed in front of the light source. Its role is to collect the light emitted by the LED and focus it into a beam.

3. **Image Insertion**:
- The transparency sheet or stencil with the custom logo is placed in the path of the light beam, in front of the lens. When light passes through this sheet, it projects the logo onto a surface.

4. **Projection**:
- As the LED emits light, it passes through the lens, which concentrates it. The light then passes through the areas of the transparency sheet where the logo is printed, creating a bright image that is projected onto a nearby surface, such as a wall or screen.

5. **Adjustments**:
- The focus and clarity of the projected image can be adjusted by changing the distance between the lens and the surface onto which the logo is projected. This distance affects the size and sharpness of the projected image.

### Key Features and Uses:

- **Customization**: Logo projectors are popular for displaying custom logos, messages, or graphics during events, parties, exhibitions, or promotional activities.

- **Versatility**: They can project onto various surfaces such as walls, floors, or ceilings, depending on the projector’s placement and the desired effect.

- **Portability**: Many logo projectors are compact and portable, making them easy to set up and move around as needed.

### Conclusion:

In essence, a logo projector uses a combination of a light source, lens, and a printed logo to create a focused beam of light that displays the logo onto a surface. It’s a straightforward yet effective technology that allows for creative and impactful visual displays in various settings.