WO2014203139A4 - Modular optics for scanning engine - Google Patents

Modular optics for scanning engine Download PDF

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Publication number
WO2014203139A4
WO2014203139A4 PCT/IB2014/062245 IB2014062245W WO2014203139A4 WO 2014203139 A4 WO2014203139 A4 WO 2014203139A4 IB 2014062245 W IB2014062245 W IB 2014062245W WO 2014203139 A4 WO2014203139 A4 WO 2014203139A4
Authority
WO
WIPO (PCT)
Prior art keywords
axis
face
module
collection
light
Prior art date
Application number
PCT/IB2014/062245
Other languages
French (fr)
Other versions
WO2014203139A1 (en
Inventor
Alexander Shpunt
Benjamin Cohen
Original Assignee
Apple Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Apple Inc filed Critical Apple Inc
Priority to CN201480034451.5A priority Critical patent/CN105324688B/en
Priority to KR1020167000889A priority patent/KR101806753B1/en
Publication of WO2014203139A1 publication Critical patent/WO2014203139A1/en
Publication of WO2014203139A4 publication Critical patent/WO2014203139A4/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/105—Scanning systems with one or more pivoting mirrors or galvano-mirrors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4817—Constructional features, e.g. arrangements of optical elements relating to scanning
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0085—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with both a detector and a source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

An optoelectronic module (130, 148) includes a beam transmitter (104), which emits at least one beam of light along a beam axis, and a receiver (114), which senses the light received by the module along a collection axis of the receiver, which is parallel to the beam axis within the module. Beam-combining optics (142, 150, 170) direct the beam and the received light so that the beam axis is aligned with the collection axis outside the module. The beam-combining optics include multiple faces, including at least a first face (144, 160, 172) configured for internal reflection and a second face (146, 151) comprising a beamsplitter (158), which is intercepted by both the beam axis and the collection axis.

Claims

AMENDED CLAIMS received by the International Bureau on 18 January 2015 (18.01.2015)
1. An optoelectronic module, comprising:
a beam transmitter, configured to emit at least one beam of light along a beam axis; a receiver, configured to sense the light received by the module along a collection axis of the receiver, which is parallel to the beam axis within the module; and
beam-combining optics, configured to direct the beam and the received light so that the beam axis is aligned with the collection axis outside the module, and comprising a prism having multiple faces including at least a first face configured for internal reflection and a second face comprising a beamsplitter, which is intercepted by both the beam axis and the collection axis.
2. The module according to claim 1, wherein the beam axis enters and exits the faces of the prism at entrance and exit angles in a vicinity of a minimum deviation angle.
3. The module according to claim 2, wherein the first and second faces are parallel to one another.
4. The module according to claim 2, wherein both the beam axis and the collection axis pass through the second face at different, respective locations.
5. The module according to claim 1, and comprising a micro-optical substrate, wherein the beam transmitter comprises a laser die, and the receiver comprises a detector die, both of which are mounted on the micro-optical substrate.
6. The module according to any of claims 1-5, and comprising a filter formed on one of the faces so as to exclude the received light that is outside an emission band of the beam transmitter.
7. The module according to any of claims 1-5, wherein the beamsplitter comprises a polarizing beamsplitter coating on the second face.
8. The module according to any of claims 1-5, wherein the multiple faces comprise a third face through which the beam axis and the collection axis exit the module at a location on the third face that is common to both the beam axis and the collection axis.
9. The module according to any of claims 1-5, wherein the beam-combining optics comprise at least one lens, which is configured to collimate the at least one laser beam and to focus the received light onto the detector die. l
10. An optical scanning head, which comprises the module according to any of claims 1-5 and a scanning mirror, which is configured to scan both the beam axis and the collection axis together over a scan area.
1 1. An optical method, comprising:
emitting at least one beam of light toward a scanner along a beam axis from a beam transmitter in an optoelectronic module;
receiving the light from the scanner along a collection axis, which is parallel to the beam axis within the optoelectronic module; and
directing the beam and the received light to and from the scanner so that the beam axis is aligned with the collection axis at the scanner, using beam-combining optics comprising a prism having multiple faces including at least a first face configured for internal reflection and a second face comprising a beamsplitter, which is intercepted by both the beam axis and the collection axis.
12. The method according to claim 1 1, wherein the beam axis enters and exits the faces of the prism at entrance and exit angles in a vicinity of a minimum deviation angle.
13. The method according to claim 12, wherein the first and second faces are parallel to one another.
14. The method according to claim 12, wherein both the beam axis and the collection axis pass through the second face at different, respective locations.
15. The method according to any of claims 1 1-14, and comprising forming a filter on one of the faces so as to exclude the received light that is outside an emission band of the beam transmitter.
16. The method according to any of claims 1 1-14, wherein the beamsplitter comprises a polarizing beamsplitter coating on the second face.
17. The method according to any of claims 1 1-14, wherein the multiple faces comprise a third face through which the beam axis and the collection axis exit the optoelectronic module at a location on the third face that is common to both the beam axis and the collection axis.
18. The method according to any of claims 1 1-14, wherein directing the laser beam and the received light comprises applying at least one lens to collimate the at least one laser beam and to focus the light received from the scanner.
19. The method according to any of claims 11-14, and comprising scanning both the beam axis and the collection axis together over a scan area using the scanner,
20. The method according to claim 19, wherein emitting the at least one beam comprises emitting pulses of the light, and wherein receiving the light comprises measuring respective times of flight of the pulses to and from objects in the scan area.

STATEMENT UNDER ARTICLE 19 (1 )

Applicant submits herewith an amendment to claims 1 -20 in this application.

Amended claim 1 now includes the limitation, taken from original claim 2, that the beam-combining optics comprise a prism having multiple faces. Claim 2 has been amended to remove this limitation.

Independent claim 1 1 has been amended in similar fashion to incorporate the identical limitation, taken from claim 12, which has been amended to remove the limitation.

In regard to the cited reference, US 3,401 ,590 (Dl), Applicant notes that this reference does not teach or suggest the use of a prism in beam-combining optics. The Examiner acknowledged this point in the Written Opinion. Therefore, the amended claims are believed to be patentable over the cited references.

PCT/IB2014/062245 2013-06-17 2014-06-15 Modular optics for scanning engine WO2014203139A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201480034451.5A CN105324688B (en) 2013-06-17 2014-06-15 Modularized optical device for scanning engine
KR1020167000889A KR101806753B1 (en) 2013-06-17 2014-06-15 Modular optics for scanning engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361835657P 2013-06-17 2013-06-17
US61/835,657 2013-06-17

Publications (2)

Publication Number Publication Date
WO2014203139A1 WO2014203139A1 (en) 2014-12-24
WO2014203139A4 true WO2014203139A4 (en) 2015-03-05

Family

ID=52104035

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/062245 WO2014203139A1 (en) 2013-06-17 2014-06-15 Modular optics for scanning engine

Country Status (3)

Country Link
KR (1) KR101806753B1 (en)
CN (1) CN105324688B (en)
WO (1) WO2014203139A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11057608B2 (en) 2016-01-04 2021-07-06 Qualcomm Incorporated Depth map generation in structured light system
US10473923B2 (en) * 2017-09-27 2019-11-12 Apple Inc. Focal region optical elements for high-performance optical scanners
US11662435B2 (en) * 2019-04-04 2023-05-30 Liturex (Guangzhou) Co. Ltd Chip scale integrated scanning LiDAR sensor
KR102182410B1 (en) * 2019-04-12 2020-11-25 한국전자기술연구원 Transmitting and receiving module of bi-axial structure and scanning LiDAR comprising the same
CN112346239B (en) * 2019-08-07 2022-10-18 华为技术有限公司 Laser scanning device
US11681019B2 (en) * 2019-09-18 2023-06-20 Apple Inc. Optical module with stray light baffle

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US3401590A (en) * 1965-03-01 1968-09-17 Sylvania Electric Prod Optical coupler
US4884697A (en) * 1988-06-21 1989-12-05 Takacs Peter Z Surface profiling interferometer
JP2000348367A (en) 1999-06-04 2000-12-15 Olympus Optical Co Ltd Optical unit and optical pickup
JP2004536315A (en) * 2001-07-18 2004-12-02 ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア Measuring head for atomic force microscopy and other applications
CN1372188A (en) * 2002-03-28 2002-10-02 冯志刚 Touch screen optical system adopting step type parallel light beam extending lens group
US7212290B2 (en) * 2004-07-28 2007-05-01 Agilent Technologies, Inc. Differential interferometers creating desired beam patterns
JP4692329B2 (en) 2006-02-28 2011-06-01 日本ビクター株式会社 Optical wireless communication device
DE102006041307A1 (en) * 2006-09-01 2008-03-13 Sick Ag Opto-electronic sensor arrangement
JP5348449B2 (en) 2007-12-25 2013-11-20 カシオ計算機株式会社 Distance measuring device and projector
CN101446775B (en) * 2008-12-30 2011-03-30 上海微电子装备有限公司 Alignment light source apparatus
CN103033806A (en) * 2012-12-27 2013-04-10 山东理工大学 Method and device for airborne laser scanning flying height change real-time compensation

Also Published As

Publication number Publication date
CN105324688B (en) 2018-03-06
CN105324688A (en) 2016-02-10
KR101806753B1 (en) 2017-12-07
WO2014203139A1 (en) 2014-12-24
KR20160019112A (en) 2016-02-18

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