Erect Image System with Cemented Prisms for Compact Laser Ranging Binoculars
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Solution Overview
Problem
Current laser ranging binoculars have a larger volume and higher cost due to a larger prism volume in the light path, and one telescope is not effectively utilized, limiting their internal integration and practicality.
Innovation Solution
The design incorporates an erect image system with roof prisms and cemented prisms, including half pentaprisms with light-splitting plating films, to reduce the light path length and integrate light paths for transmitting, receiving, and displaying, allowing for binocular viewing and real-time distance measurement with a smaller volume and higher internal utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a larger prism volume is used in the light path, then the laser ranging binoculars can achieve proper image erection and laser transmission, but the total length and volume of the binoculars increase
Solution Approach 1:
The patent combines the roof prism and pentaprism into a single integrated prism assembly where the roof prism is positioned within the pentaprism structure. This merging of optical elements eliminates the need for separate prism components, reduces the overall light path volume, and achieves proper image erection without increasing binoculars size.
Solution Approach 2:
The patent employs a light path configuration that folds the optical path multiple times within a compact volume by utilizing the roof prism's reflective surfaces at specific angles. This dimensional folding allows the light to traverse sufficient path length for proper image erection while occupying minimal spatial volume in the binoculars structure.
2Adaptability or versatility
If external ranging optics are used outside the lens tube, then the laser ranging function can be achieved, but the cost and volume increase
Solution Approach 1:
The patent designs the prism assembly to serve multiple functions simultaneously: it erects the image, transmits the laser beam, and receives the reflected laser light for ranging measurements. By making the optical system multi-functional, the patent eliminates the need for separate external ranging optics, reduces complexity, and lowers cost while maintaining full laser ranging capability.
3Reliability
If traditional separate prism components are used, then the light path can be properly configured, but the internal integration and volume utilization decrease
Solution Approach 1:
The patent integrates the roof prism and pentaprism into a unified optical component where the roof prism is embedded within the pentaprism structure. This merging achieves proper light path configuration for image erection and laser transmission while maximizing internal integration efficiency and volume utilization by eliminating gaps and separate mounting requirements.
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
This configuration enables the conversion of inverted images to erect images, reduces the light path length, and achieves efficient transmitting, receiving, and projecting of laser beams, allowing for real-time distance measurement and display within the field of view, enhancing the binoculars' internal integration and reducing their volume.
Implementation Method 1
a cemented surface of the half pentaprism and the small half pentaprisms is provided with a light-splitting plating film
Implementation Method 2
an incident light enters the roof prism through the roof transceiving surface, then enters the half pentaprism after being reflected by the first roof reflecting surface, the second roof reflecting surface and the roof transceiving surface sequentially
Data Source
AI summary
An erect image system and laser ranging binoculars are provided by the present disclosure, which relate to a technical field of laser ranging binoculars. The erect image system includes a left erect image system and a right erect image system; each of the left erect image system and the right erect image system includes a roof prism and a cemented prism; the cemented prism includes a half pentaprism and a small half pentaprism cemented together; and a cemented surface of the half pentaprisms and the small half pentaprisms is provided with a light-splitting plating film. The present disclosure is not only simple in structure and small in occupied volume, but also convenient to use, and can achieve binocular viewing and aiming, and displaying the distance of the measured object within the field of view in real time when viewing the object.