PL2673557T3 - Lampa operacyjna i sposób oświetlania miejsca zabiegu - Google Patents

Lampa operacyjna i sposób oświetlania miejsca zabiegu

Info

Publication number
PL2673557T3
PL2673557T3 PL12707743T PL12707743T PL2673557T3 PL 2673557 T3 PL2673557 T3 PL 2673557T3 PL 12707743 T PL12707743 T PL 12707743T PL 12707743 T PL12707743 T PL 12707743T PL 2673557 T3 PL2673557 T3 PL 2673557T3
Authority
PL
Poland
Prior art keywords
surgical
illuminating
light
site
surgical site
Prior art date
Application number
PL12707743T
Other languages
English (en)
Inventor
Rudolf Marka
Rouven Rosenheimer
Original Assignee
Trumpf Medizin Systeme Gmbh + Co Kg
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 Trumpf Medizin Systeme Gmbh + Co Kg filed Critical Trumpf Medizin Systeme Gmbh + Co Kg
Publication of PL2673557T3 publication Critical patent/PL2673557T3/pl

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/30Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
    • A61B90/35Supports therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0625Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements for multiple fixed illumination angles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/50Instruments, other than pincettes or toothpicks, for removing foreign bodies from the human body
    • A61B17/52Magnets
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/30Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36Image-producing devices or illumination devices not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/04Refractors for light sources of lens shape
    • F21V5/048Refractors for light sources of lens shape the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017Electrical control of surgical instruments
    • A61B2017/00022Sensing or detecting at the treatment site
    • A61B2017/00057Light
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017Electrical control of surgical instruments
    • A61B2017/00022Sensing or detecting at the treatment site
    • A61B2017/00106Sensing or detecting at the treatment site ultrasonic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06Measuring instruments not otherwise provided for
    • A61B2090/061Measuring instruments not otherwise provided for for measuring dimensions, e.g. length
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • F21S8/04Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14Adjustable mountings
    • F21V21/30Pivoted housings or frames
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/40Hand grips
    • F21V21/403Hand grips for operation or dentist lamps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20Lighting for medical use
    • F21W2131/205Lighting for medical use for operating theatres
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00Planar light sources
    • F21Y2105/10Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00Combination of light sources
    • F21Y2113/10Combination of light sources of different colours
    • F21Y2113/13Combination of light sources of different colours comprising an assembly of point-like light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Pathology (AREA)
  • General Engineering & Computer Science (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Optics & Photonics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
PL12707743T 2011-03-02 2012-03-02 Lampa operacyjna i sposób oświetlania miejsca zabiegu PL2673557T3 (pl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11156645.1A EP2495487B1 (de) 2011-03-02 2011-03-02 Operationsleuchte und Verfahren zum Ausleuchten einer Operationsstelle

Publications (1)

Publication Number Publication Date
PL2673557T3 true PL2673557T3 (pl) 2017-02-28

Family

ID=44314987

Family Applications (1)

Application Number Title Priority Date Filing Date
PL12707743T PL2673557T3 (pl) 2011-03-02 2012-03-02 Lampa operacyjna i sposób oświetlania miejsca zabiegu

Country Status (7)

Country Link
US (1) US9119668B2 (pl)
EP (2) EP2495487B1 (pl)
CN (1) CN103403442B (pl)
DK (1) DK2673557T3 (pl)
ES (1) ES2603158T3 (pl)
PL (1) PL2673557T3 (pl)
WO (1) WO2012117108A1 (pl)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502008001209D1 (de) * 2008-06-20 2010-10-07 Trumpf Medizin Systeme Gmbh & Co Kg Operationsleuchte
FR2988806B1 (fr) * 2012-03-27 2015-06-26 Maquet Sas Dispositif d'eclairage a diodes electroluminescentes et a fibres optiques, appareil d'eclairage
US9797565B2 (en) * 2012-10-31 2017-10-24 Thomas & Betts International Llc LED engine for emergency lighting
ITMI20122014A1 (it) * 2012-11-27 2014-05-28 Comm S R L G Lampada orientabile per ambienti operatori, ambulatori e studi medici o dentistici, e metodo di pilotaggio della stessa
FR3003011A1 (fr) * 2013-03-05 2014-09-12 Maquet Sas Dispositif d'eclairage a asservissement en luminance
CN103791240B (zh) * 2014-02-14 2016-06-08 黑龙江科技大学 一种医疗智能激光无影照明系统
EP2932932B1 (de) * 2014-04-14 2019-03-06 Kaltenbach & Voigt GmbH Medizinische Leuchte
JP6669428B2 (ja) * 2014-08-13 2020-03-18 株式会社小糸製作所 照明装置と照明方法及び表示システム
CN104819403A (zh) * 2014-10-22 2015-08-05 深圳市科曼医疗设备有限公司 手术灯的照明组件、手术灯及手术灯光斑调节方法
FR3035185B1 (fr) * 2015-04-15 2018-07-13 Steris Dispositif d'eclairage medical
DE102015113339A1 (de) * 2015-08-13 2017-02-16 Karl Leibinger Medizintechnik Gmbh & Co. Kg Operationsleuchte mit Helligkeitsregulierung
DE102015113337A1 (de) * 2015-08-13 2017-02-16 Karl Leibinger Medizintechnik Gmbh & Co. Kg Operationsleuchte mit veränderbarer Lichtfeldgeometrie
DE102015113336B4 (de) * 2015-08-13 2017-10-05 Karl Leibinger Medizintechnik Gmbh & Co. Kg Handgriffvorrichtung für eine Operationsleuchte mit Sensoren sowie Operationsleuchte
CN115539867A (zh) * 2015-09-24 2022-12-30 卡任特照明解决方案有限公司 照明装置
FR3044889B1 (fr) * 2015-12-15 2021-12-24 Surgiris Systeme d'eclairage medical, notamment operatoire, et procede de commande d'un tel systeme d'eclairage
ITUA20161590A1 (it) * 2016-03-11 2017-09-11 Artemide Spa Apparecchio di illuminazione ad angolo di emissione del fascio luminoso variabile
US10240751B2 (en) * 2016-03-24 2019-03-26 TurningMode, LLC Systems and methods of illumination
JP6438906B2 (ja) * 2016-04-11 2018-12-19 ミネベアミツミ株式会社 角度調整装置及び照明装置
FI127839B (fi) * 2016-04-15 2019-03-29 Merivaara Oy Valaisin leikkaussalikäyttöön ja valaisinta hyödyntävä menetelmä
FR3052536B1 (fr) * 2016-06-08 2018-06-01 Maquet Sas Dispositif d'eclairage medical avec un systeme d'aide au bon positionnement
CN107726177B (zh) * 2016-08-10 2020-10-30 安钛医疗设备股份有限公司 具有光强度微调功能的手术灯
EP3282179B1 (en) 2016-08-11 2020-04-08 ABL IP Holding LLC Luminaires with transition zones for glare control
US10271398B2 (en) 2016-11-01 2019-04-23 American Sterilizer Company Adaptive shadow control system for a surgical lighting system
US9763299B1 (en) * 2016-11-04 2017-09-12 Amtai Medical Equipment, Inc. Surgical light with luminous intensity fine adjustment function
AU2017376763A1 (en) * 2016-12-15 2019-05-23 Alcon Inc. Illuminated surgical probe having a variable illumination numerical aperture
US10650988B2 (en) * 2018-01-09 2020-05-12 American Sterilizer Company Sterilizable handle actuating button integration
CN109073173B (zh) 2018-03-21 2021-02-05 南京迈瑞生物医疗电子有限公司 手术灯及其术野光斑调节方法
EP3781976A1 (en) 2018-04-18 2021-02-24 Gentex Corporation Confined field of view illumination in surgical microscopy
CZ310003B6 (cs) * 2018-12-05 2024-05-01 Vysoká Škola Báňská-Technická Univerzita Ostrava Svítidlo s dálkově řiditelnými světelně technickými parametry
RU191645U1 (ru) * 2018-12-05 2019-08-15 Общество с ограниченной ответственностью "Аксима" Светодиодный хирургический светильник
WO2021074824A1 (en) 2019-10-15 2021-04-22 Gentex Corporation Flat panel light module with dynamic beam
WO2021154550A1 (en) * 2020-01-31 2021-08-05 American Sterilizer Company Proximity detection for a surgical light
WO2021154571A1 (en) * 2020-01-31 2021-08-05 American Sterilizer Company Surgical light head with beam spreading and adjustable power balancing
DE102020114418A1 (de) 2020-05-29 2021-12-02 Karl Leibinger Medizintechnik Gmbh & Co. Kg System zur Überwachung einer Operationsleuchtenanordnung
DE102020114416A1 (de) 2020-05-29 2021-12-02 Karl Leibinger Medizintechnik Gmbh & Co. Kg System zur Überwachung einer Operationsleuchtenanordnung
EP4071406A1 (en) * 2021-04-09 2022-10-12 TRUMPF Medizin Systeme GmbH + Co. KG Yoke for a suspension system for a medical lamp, suspension system and system of a medical lamp body and a suspension system
CN113790671B (zh) * 2021-09-03 2022-05-17 苏州天准科技股份有限公司 一种口径可调的落射光源及影像测量仪
USD1014832S1 (en) 2021-09-16 2024-02-13 Trumpf Medizin Systeme Gmbh + Co. Kg Support arm for a suspension apparatus for a medical lamp
USD1015622S1 (en) 2021-09-16 2024-02-20 Trumpf Medizin Systeme Gmbh + Co. Kg Suspension apparatus for a medical lamp
DE102021124083A1 (de) * 2021-09-17 2023-03-23 Dr. Mach Gmbh & Co. Kg Beleuchtungsvorrichtung zum beleuchten einer operationswunde
DE102022122412A1 (de) * 2022-09-05 2024-03-07 Drägerwerk AG & Co. KGaA Beleuchtungsvorrichtung und Beleuchtungsverfahren mit Kontrastveränderung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3723009A1 (de) * 1987-07-11 1989-01-19 Heraeus Gmbh W C Operationsleuchte
DE3933596A1 (de) * 1989-10-07 1991-04-18 Heraeus Instr Gmbh Operationsleuchte mit verstellbarer halterung
JP2506820Y2 (ja) * 1990-10-01 1996-08-14 山田医療照明株式会社 医療用無影照明装置における自動焦点位置調節装置
EP1697686B1 (de) * 2003-12-22 2011-05-04 Auer Lighting GmbH Stufenlinsenscheinwerfer
CN101446403A (zh) * 2007-11-26 2009-06-03 杰森医疗设备(上海)有限公司 用于无影灯的反光器
PL2136128T3 (pl) * 2008-06-20 2011-06-30 Trumpf Medizin Systeme Gmbh & Co Kg Lampa operacyjna
DE102009007986A1 (de) * 2009-02-07 2010-08-12 Radl, Bernd, Dr. Vorrichtung zur Beleuchtung eines Operationsfeldes eines sterilen Operationsraumes
DE102009037316A1 (de) * 2009-08-14 2011-02-17 Karl Storz Gmbh & Co. Kg Steuerung und Verfahren zum Betreiben einer Operationsleuchte

Also Published As

Publication number Publication date
EP2673557A1 (de) 2013-12-18
WO2012117108A1 (de) 2012-09-07
CN103403442A (zh) 2013-11-20
DK2673557T3 (en) 2016-11-28
EP2495487A1 (de) 2012-09-05
ES2603158T3 (es) 2017-02-23
CN103403442B (zh) 2017-03-01
EP2495487B1 (de) 2014-06-11
EP2673557B1 (de) 2016-08-24
US9119668B2 (en) 2015-09-01
US20140066722A1 (en) 2014-03-06

Similar Documents

Publication Publication Date Title
PL2673557T3 (pl) Lampa operacyjna i sposób oświetlania miejsca zabiegu
EP2649923A4 (en) ENDOSCOPE AND LIGHTING DEVICE FOR THE ENDOSCOPE
HK1200304A1 (en) Surgical fastening device and method
SG10201502309WA (en) Method And Means For Enhancing Greenhouse Lights
PL2655956T3 (pl) Urządzenie oświetleniowe i sposób wytwarzania urządzenia oświetleniowego
EP2679137A4 (en) ENDOSCOPE TYPE APPARATUS AND METHOD FOR ADJUSTING THE AMOUNT OF LIGHT FOR OBSERVATION OF FLUORESCENT LIGHT
CO6862126A2 (es) Sistema de guía quirúrgica para implantología dental y método para hacer un sistema de guía quirúrgica para implantología dental
EP2741681A4 (en) APPARATUS AND METHOD FOR REALIZING SUTURE OF TISSUE
EP2739237A4 (en) SURGICAL INSTRUMENT AND ITS CONTROL METHOD
GB201108078D0 (en) Surgical guides and methods for manufacturing thereof
EP2663245A4 (en) Surgical stapling device and method
PL2670327T3 (pl) Urządzenie do naprawy ubytków kostnych
EP2691946A4 (en) METHOD AND SYSTEM FOR SIMULATING SURGICAL PROCEDURES
EP2535954A4 (en) LIGHT EMITTING DEVICE AND METHOD FOR MANUFACTURING LIGHT EMITTING DEVICE
SG10201706641TA (en) Method for forming a tissue construct and use thereof
EP2672930A4 (en) TISSUE TREATMENT METHOD AND DEVICES
IL231231A0 (en) Surgical instrument for fusion of incisions
EP2790012A4 (en) DEVICE AND METHOD FOR INSPECTION LIGHTING
EP2626617A4 (en) MEDICAL LIGHT SOURCE DEVICE
EP2680787A4 (en) SURGICAL IMPLANT AND METHOD THEREOF
EP2508661A4 (en) METHOD FOR MANUFACTURING SURGICAL SUTURE
EP2597351A4 (en) LIGHTING INSTALLATION AND METHOD OF USE
EP2622623A4 (en) EXCIMER LIGHT SOURCE
EP2765406A4 (en) FLUORESCENT LIGHT OBSERVATION DEVICE AND FLUORESCENT LIGHT OBSERVATION METHOD
EP2705298A4 (en) COLLIMED LIGHTING BY HOLLOW LIGHT GUIDES