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

Optical system providing polarized light

A technology of optical systems and polarizers, applied in the field of optical systems, can solve problems such as poor efficiency

Inactive Publication Date: 2015-09-09
SIGNIFY HLDG BV
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one drawback of utilizing such techniques is the relatively poor efficiency due to the polarizer transmitting only one component

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 system providing polarized light
  • Optical system providing polarized light
  • Optical system providing polarized light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will now be described hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to convey the scope of the invention to those skilled in the art.

[0037] refer to figure 1 , shows a cross-sectional side view of an optical system 100 according to an embodiment of the present invention. The optical system 100 includes a reflector 120 such as the parabolic reflector 120 according to the present embodiment, in which the light emitting module 110 is arranged to emit light. A polarization state converter 140 such as a quarter wave plate 140 is arranged relative to the reflector 120 so as to receive the light L emitted by the light emitting module 110 1 at least some of them. Optica...

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

An optical system (100) is provided, having at least one light emitting module (110) adapted to emit light, and at least one reflector (120) arranged relatively to a corresponding one of the at least one light emitting module (110) so as to receive at least some light emitted by the at least one light emitting module (110). A polarizer (130) is provided so as to transmit light having at least a first polarization direction and to reflect light having at least a second polarization direction. The light emitting module (110) comprises at least one light emitting surface portion (114) and at least one corresponding reflective surface portion (112) which are arranged point symmetrically to each other with respect to a point (116) coinciding with an optical axis (A) of the at least one reflector (120) such that at least some of the light reflected by the polarizer (130) impinges on the reflective surface portion (112). The optical system (100) is capable of outputting polarized light at a relatively high efficiency.

Description

technical field [0001] The invention relates to an optical system with a partially reflective, partially transmissive polarizer and a light emitting module arranged to emit and reflect light. Methods for providing such optical systems are also disclosed. Background technique [0002] Lighting devices are known in which polarizers are used to provide linearly polarized light. The polarizer is adapted to split the incident light into two linearly polarized components of opposite polarization characteristics. One component passes through the polarizer, while the other component is absorbed by the polarizer. However, one drawback with such techniques is the relatively poor efficiency due to the polarizer only transmitting one component. [0003] In eg US 3,566,099 this problem is solved by providing a light projection assembly with a reflective-transmissive polarizer arranged over the mouth of a parabolic reflector, where one component passes through the polarizer and the oth...

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 Applications(China)
IPC IPC(8): G02B27/28
CPCG02B27/286G02B27/28
Inventor A.J.S.M.德瓦安M.哈维拉格B.M.I.范德赞德
Owner SIGNIFY HLDG BV