Aurora Light Projector with Segmented Prism Lens and Nested Cavity
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Solution Overview
Problem
Commercially available projection starry lamps lack versatility in pattern presentation, fail to simulate an aurora effect, and have an inefficient compact structure.
Innovation Solution
A polar light projector with a housing and upper cover forming a containing cavity, featuring a light-emitting lamp path component with an optical lens, aluminum substrate, aurora sheet, and drive component for dynamic aurora patterns, along with a laser lamp path component for all-over-sky star-shaped light, and a compact cavity bracket design to reduce interference and enhance aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional projection starry lamp uses a simple projection structure, then the device is simple to manufacture, but it cannot present aurora effects and has limited pattern variety
Solution Approach 1:
The projection system is segmented into multiple independent light path components: a first light path component for aurora projection and a second light path component for starry sky projection. Each component has its own light source and optical elements, allowing independent control and pattern generation. This segmentation enables the device to present diverse patterns including aurora effects and starry skies without requiring a single complex projection system.
Solution Approach 2:
The projection device is designed with multi-functionality to present multiple types of patterns including aurora effects, starry skies, and other cosmic patterns. By integrating multiple light path components with different optical characteristics (lens for aurora, diffuser for starry sky), the device universally handles various projection needs without requiring separate devices for each pattern type.
2Volume of moving object
If the housing structure is made compact, then the device occupies less space, but it becomes difficult to arrange multiple light path components and internal structures
Solution Approach 1:
The housing adopts a nested structure where the cavity bracket is positioned within the housing cavity, and multiple light path components are arranged in nested or layered configurations. The first light path component (aurora) and second light path component (starry sky) are vertically stacked with the aurora component above and the starry sky component below, allowing efficient use of vertical space. This nested arrangement accommodates multiple complex internal structures within a compact overall device volume.
3Ease of manufacture
If the optical lens uses a simple single-element design, then the manufacturing is easier, but it cannot create the desired aurora pattern with curved stripes
Solution Approach 1:
The optical lens is segmented into multiple curved striped prism elements arranged in a specific pattern on its inner surface. Instead of using a single complex molded lens, the design divides the refractive surface into discrete curved stripes that can be more easily manufactured and assembled. This segmentation maintains manufacturing feasibility while achieving the precise aurora pattern through the collective optical effect of multiple prism elements.
Solution Approach 2:
The optical lens combines multiple materials or structural layers: a transparent lens body material and curved striped prism elements on the inner surface. This composite structure allows the lens to maintain optical clarity while incorporating the pattern-forming prisms. The composite design enables precise pattern control through the prism arrangement while keeping the base lens manufacturing relatively simple.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The projector creates a dynamic aurora-like atmosphere with a compact and attractive structure, offering adjustable brightness and rotation speed for varied user experiences, while the vibrating diaphragm reduces speaker interference and the communication module enables remote control through Bluetooth or Wi-Fi.
Implementation Method 1
a refracting surface of the optical lens is formed by splicing a plurality of curved striped prisms
Implementation Method 2
a laser lamp path component for emitting all-over-sky star-shaped light
Data Source
AI summary
The light projector includes a housing and an upper cover which form a containing cavity; a light-emitting component, a laser lamp component, a main control board, a speaker and a cavity bracket are all arranged within the cavity. The cavity bracket is provided with a motor fixing groove and a limiting wall, the light-emitting component is arranged in the limiting wall, a motor is placed on the motor fixing groove and is fixed through a fixing lug, a refracting surface of an optical lens is formed by a plurality of curved striped prisms. An aurora sheet is rotated by the drive component, light from the light emitting lamp shining through the aurora sheet and projected by the refracting surface of the optical lens to form a dynamic aurora pattern. The laser lamp component is configured to project an illumination pattern simulating.