Unlock instant, AI-driven research and patent intelligence for your innovation.

Optical device, projection device including same, and linear projection method

A technology of optical devices and diffractive optical elements, applied in the field of projection devices, can solve problems such as affecting the aesthetics of the crosshairs, and achieve the effect of facilitating engineering applications

Active Publication Date: 2021-10-12
HANGZHOU YUGUANG OPTOELECTRONICS TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some technical problems in designing a DOE with a large field of view: when designing a single-chip DOE to project a continuous crosshair with a large field of view, due to the interference effect of the laser used as the projection light source, diffuse spots will be formed on the continuous line, affecting The beauty of the crosshairs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical device, projection device including same, and linear projection method
  • Optical device, projection device including same, and linear projection method
  • Optical device, projection device including same, and linear projection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] In the following, only some exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.

[0039] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orie...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an optical device comprising a diffractive optical element and a columnar microlens array, the diffractive optical element has a microstructure surface, and a plurality of microstructure pattern units are arranged on the microstructure surface, and the microstructure pattern unit It is configured to modulate the light beam incident on the diffractive optical element and project a linear lattice; the columnar microlens array is configured to widen the points in the lattice along the extension direction of the lattice to Projects a continuous line. The present invention also provides a linear projection device including the optical device and a method for projecting a straight line using the device.

Description

technical field [0001] The present invention generally relates to the field of optical technology, and in particular to an optical device for projecting a straight line, a projection device including the optical device and a method for projecting a straight line using the device. Background technique [0002] Laser line projectors are widely used in the construction industry to project laser reference lines to improve construction accuracy. At present, the common laser line projectors on the market have a word line and a cross line. The method of realization is: usually the divergent light emitted by the laser diode is collimated first, and then through the refractive optical element (ROE), such as a cylindrical lens, to form the required Light field (baseline). However, the existing laser line projectors that use refracting optical elements to achieve crosshairs have the problem of difficulty in vertical alignment of the two cylindrical lenses, greater difficulty in instal...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/18G02B27/42G02B27/09G01C15/00
CPCG01C15/004G02B5/1876G02B27/0961G02B27/4233
Inventor 王燚言陈鹏
Owner HANGZHOU YUGUANG OPTOELECTRONICS TECH CO LTD