Composite Prism Layout for Compact Laser Ranging Telescopes
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Solution Overview
Problem
Existing telescopes with laser ranging capabilities face limitations in structural diversity and function due to the restricted installation of laser emission and receiving devices, primarily because existing prisms have only two reflecting surfaces, hindering compact design and functionality.
Innovation Solution
A composite prism system using an isosceles prism with three reflecting surfaces, combined with a roof prism and a half-penta prism, integrated with a compensating prism, allows for the efficient integration of laser emission and receiving systems on the telescope's central axis, enhancing structural diversity and reducing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing prisms with two reflecting surfaces are used, then the structure is simple, but the installation of laser emission and receiving devices is restricted
Solution Approach 1:
The patent combines multiple prisms (isosceles prism with three reflecting surfaces, roof prism, half-penta prism, and compensating prism) into a composite prism system that integrates multiple optical functions. This merging allows laser emission and receiving devices to be installed on the central axis while maintaining compact structure, resolving the contradiction between installation flexibility and structural complexity.
Solution Approach 2:
The composite prism is designed to perform multiple functions simultaneously: it serves as both the optical path for telescopic observation and the laser emission/receiving path. The isosceles prism with three reflecting surfaces provides universal functionality for both visible light and laser wavelengths, enabling diverse structural styles and functions without increasing overall complexity.
2Adaptability or versatility
If laser emission and receiving devices are installed on the side of the telescope, then installation is easier, but structural diversity is restricted
Solution Approach 1:
The patent relocates the laser emission and receiving devices from the lateral position to the central axis position by changing the optical path dimension. The composite prism redirects the laser beam through multiple reflections to achieve the required optical path, enabling central axis installation which enhances structural diversity while maintaining installation feasibility.
3Adaptability or versatility
If a composite prism with multiple reflecting surfaces is used, then installation flexibility improves, but the prism structure becomes more complex
Solution Approach 1:
The composite prism is segmented into distinct functional components: an isosceles prism with three reflecting surfaces for primary beam direction, a roof prism for image erection, a half-penta prism for additional beam steering, and a compensating prism for optical path correction. This segmentation allows each component to be optimized for its specific function while collectively providing the required installation flexibility.
Solution Approach 2:
The patent employs a nested arrangement where the compensating prism is integrated within the composite prism structure, and the beam splitting film is coated on the glued surfaces between prisms. This nesting optimizes space utilization and reduces overall structural complexity while maintaining the flexibility needed for laser device installation.
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 composite prism system enables a compact, versatile laser ranging telescope with integrated laser emission and receiving systems, allowing for diverse structural styles and improved performance by optimizing light path utilization.
Implementation Method 1
a beam splitting film is coated to the glued surface, light with first wavelength enters from a first surface I of the first prism, is emitted from a second surface I of the first prism after being reflected by the second surface I, the third surface I and the first surface I of the first prism successively
Implementation Method 2
enters a first surface II of the second prism, and is emitted from a third surface II after being reflected by a roof surface and the first surface II of the second prism
Implementation Method 3
light with first wavelength enters from a first surface I of the first prism, is emitted from a second surface I of the first prism after being reflected by the second surface I, the third surface I and the first surface I of the first prism successively
Data Source
AI summary
A composite prism based on an isosceles prism and a laser ranging telescope includes a first prism, a second prism, a third prism and a compensating prism. The first prism is an isosceles prism with three reflecting surfaces, the second prism is a roof prism, the third prism is a half-penta prism, and the compensating prism is a wedge prism. Through the composite prism, a telescope observation system, a laser emission system, a laser receiving system and a sighting and display system are reasonably integrated, so that a telescope features diversified performance and structural style, small size and convenient to carry.