Optical communication system for survey instrument
First Claim
1. An optical communication system for a survey instrument capable of optical communication to a target object which comprises data communication means, wherein said data communication means of said target object comprises photodetection means for receiving communication light which is projected from said survey instrument and a diffraction optical member for directing said communication light onto said photodetection means, wherein said diffraction optical member transmits parallel light components of communication light without change and has a converging function having at least 0th diffraction order.
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Abstract
The present invention provides an optical communication system, which comprises photodetection means for receiving communication light and optical means for forming an image from the communication light on the photodetection means, wherein the optical means is provided with a diffraction optical member having at least 0-th diffraction order.
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Citations
5 Claims
- 1. An optical communication system for a survey instrument capable of optical communication to a target object which comprises data communication means, wherein said data communication means of said target object comprises photodetection means for receiving communication light which is projected from said survey instrument and a diffraction optical member for directing said communication light onto said photodetection means, wherein said diffraction optical member transmits parallel light components of communication light without change and has a converging function having at least 0th diffraction order.
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