Difference between revisions of "Olympus BH"

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[[Category:Olympus]]
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[[Olympus BH Identification]]
  
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=Part list=
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==Model==
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TODO: add standard metallurgical
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{| class="wikitable sortable" border="1"
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!Image!!Name!!Description!!Notes
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|-
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|[[File:olympus_series_bh_microscope_system1.jpg|300 px]] <br />Source: [BH microscope, cover] [[BHA]||Bottom illumination, removable nosepiece||
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|-
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| ||[[BHB]]||Bottom illumination, fixed nosepiece||
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|-
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| ||[[BHC]]||Bottom illumination, fixed nosepiece, integrated light source||
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|-
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| ||[[BHMJ-02]]||Epi-illumination, sliding stanmd, BF, monocular||
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|-
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| ||[[BHMJ-22]]||Epi-illumination, sliding stanmd, BF, binocular||
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|-
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|[[File:olympus_bhmj_and_bhmj-n_bhmj.png|300 px]] <br />Source: [instruction BHMJ/-N, 3] [[BHMJ-42]|| ||Epi-illumination, sliding stanmd, BF, trinocular||
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|-
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| ||[[BHMJ-02-N]]||Epi-illumination, sliding stanmd, BF/DF, monocular||
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|-
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| ||[[BHMJ-22-N]]||Epi-illumination, sliding stanmd, BF/DF, binocular||
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|-
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| ||[[BHMJ-42-N]]||Epi-illumination, sliding stanmd, BF/DF, trinocular||
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|-
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|}
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==Objective==
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M is BF only.  Neo are BF/DF.  All are M25 threaded
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{| class="wikitable sortable" border="1"
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!Image!!Part #!!Type!!Description!!Notes
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|-
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| ||[[M5X]]||Objective||5x||
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|-
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| ||[[M10X]]||Objective||10x||
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|-
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| ||[[M20X]]||Objective||20x||
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|-
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| ||[[M40X]]||Objective||40x||
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|-
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| ||[[Neo5X]]||Objective||5x||
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|-
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| ||[[Neo10X]]||Objective||10x||
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|-
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| ||[[Neo20X]]||Objective||20x||
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|-
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| ||[[Neo40X]]||Objective||40x||
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|-
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| ||[[BH-RE]]||Nosepiece||Quintuple||
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|-
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| ||[[BH-RE]]||Nosepiece|| ||
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|-
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| ||[[BH-NRE]]||Nosepiece|| ||
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|-
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|}
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==Illuminator==
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{| class="wikitable sortable" border="1"
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!Image!!Part #!!Type!!Description!!Notes
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|-
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| ||[[BH-MA]]||Illuminator (vertical)||Brightfield||
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|-
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| ||[[BH-RLA]]||Illuminator (vertical)||Brightfield and darkfield||
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|-
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|[[File:olympus_series_bh_microscope_bh-lh.png|300 px]] <br />Source: [BH microscope, 9] [[BH-LH]||Lamphouse||Tungsten, 30W||Pre-centered
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|-
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| ||[[BH-LHM]]||Lamphouse||Tungsten||
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|-
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|[[File:olympus_series_bh_microscope_bh-lsh.png|300 px]] <br />Source: [BH microscope, 9] [[BH-LSH]||Lamphouse||Halogen 100W||Centerable
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|-
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|[[File:olympus_series_bh_microscope_bh-lh.png|300 px]] <br />Source: [BH microscope, 9] [[BH-LH]||Lamphouse|| ||
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|-
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|[[File:olympus_series_bh_microscope_ls30.png|100 px]] <br />Source: [BH microscope, 9] [[LS30]||Bulb||6V, 30W tungsten||
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|-
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|[[File:olympus_series_bh_microscope_ls15.png|100 px]] <br />Source: [BH microscope, 9] [[LS15]||Bulb||6V, 15W tungsten||
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|-
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| ||[[FK5X]]||Eyepiece, photo||5x||
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|-
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| ||[[TF]]||Power supply||Transformer||voltage range?
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|-
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| ||[[45C]]||Filter||for what?||
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|-
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|[[File:olympus_series_bh_microscope_jc12v_100w.png|150 px]] <br />Source: [BH microscope, 9] [[jc12v 100W]||Bulb||Halogen||
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|-
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|}
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==Observation tube==
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{| class="wikitable sortable" border="1"
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!Image!!Part #!!Type!!Description!!Notes
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|-
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| ||[[CH-M045]]||Observation tube||Monocular||
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|-
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|[[File:olympus_series_bh_microscope_bh-swtr.png|300 px]] <br />Source: [BH microscope, 11] [[BH-SWTR]||Observation tube||Binocular w/ photo?||
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|-
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|[[File:olympus_series_bh_microscope_bh-bi30_bi45.png|300 px]] <br />Source: [BH microscope, 11] [[BH-BI30]||Observation tube||Binocular, 30 degree||
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|-
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|[[File:olympus_series_bh_microscope_bh-bi30_bi45.png|300 px]] <br />Source: [BH microscope, 11] [[BH-BI45]||Observation tube||Binocular, 45 degree||
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|-
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|[[File:olympus_series_bh_microscope_bh-tr30_tr45.png|300 px]] <br />Source: [BH microscope, 11] [[BH-TR30]||Observation tube||Binocular, 30 degree (w/ photo)||
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|-
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|[[File:olympus_series_bh_microscope_bh-tr30_tr45.png|300 px]] <br />Source: [BH microscope, 11] [[BH-TR45]||Observation tube||Binocular, 45 degree (w/ photo)||
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|-
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| ||[[BiWF10X]]||Eyepiece||HEP, paired||
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|-
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|[[File:olympus_series_bh_microscope_emm-vi.png|300 px]] <br />Source: [BH microscope, 15] [[EMM-VI]|| || ||
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|-
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|[[File:olympus_series_bh_microscope_pm-10-35a.png|300 px]] <br />Source: [BH microscope, 15] [[PM-10-35A]|| || ||
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|-
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|[[File:olympus_series_bh_microscope_pm-10-35l2a.png|300 px]] <br />Source: [BH microscope, 15] [[PM-10-35L2A]|| || ||
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|-
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|[[File:olympus_series_bh_microscope_pm-10-35m.png|300 px]] <br />Source: [BH microscope, 15] [[PM-10-35M]|| || ||
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|-
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|[[File:olympus_series_bh_microscope_pm-6.png|300 px]] <br />Source: [BH microscope, 15] [[PM-6]|| || ||
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|-
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|}
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==Misc==
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{| class="wikitable sortable" border="1"
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!Image!!Part #!!Type!!Description!!Notes
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|-
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|[[File:zoidberg_bh_neo_turret.jpg|200 px]] [[BH-RE]||Nosepiece||Quintuple||Neo objectives (M25)
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|-
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|[[File:olympus_series_bh_microscope_bha-f.png|300 px]] <br />Source: [BH microscope, 9] [[BHA-F]||Stand||Bottom illumination, removable nosepiece||
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|-
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|[[File:olympus_series_bh_microscope_bhb-f.png|300 px]] <br />Source: [BH microscope, 9] [[BHB-F]||Stand||Bottom illumination, fixed nosepiece||
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|-
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|[[File:olympus_series_bh_microscope_bhc-f.png|300 px]] <br />Source: [BH microscope, 9] [[BHC-F]||Stand||Bottom illumination, fixed nosepiece, integrated light||Lowest cost?
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|-
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|[[File:olympus_series_bh_microscope_bh-sv.png|300 px]] <br />Source: [BH microscope, 13] [[BH-SV]||Stage|| ||
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|-
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|[[File:olympus_series_bh_microscope_bh-cd.png|300 px]] <br />Source: [BH microscope, 13] [[BH-CD]||Condenser||Abbe||
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|-
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|[[File:olympus_series_bh_microscope_bh-aac.png|300 px]] <br />Source: [BH microscope, 13] [[BH-AAC]||Condenser||Ach/Apla||
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|-
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| ||[[BHMJ-ST]], [[BHMJ-F]]||Body/base||
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|-
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| ||[[FK3.3X]]||Photo eyepiece|| ||
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|-
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| ||[[32.5C]]||Blue filter||
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|-
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|[[File:olympus_series_bh_microscope_ah-ca.png|300 px]] <br />Source: [BH microscope, 11] [[AH-CA]|| ||
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|-
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|[[File:olympus_series_bh_microscope_ah-fa.png|300 px]] <br />Source: [BH microscope, 11] [[AH-FA]|| ||
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|-
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|[[File:olympus_series_bh_microscope_bh-dcd.png|300 px]] <br />Source: [BH microscope, 13] [[BH-DCD]|| ||
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|-
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|[[File:olympus_series_bh_microscope_bh-dcw.png|300 px]] <br />Source: [BH microscope, 13] [[BH-DCW]|| ||
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|-
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|[[File:olympus_series_bh_microscope_bh-pc.png|300 px]] <br />Source: [BH microscope, 13] [[BH-PC]|| ||
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|-
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|[[File:olympus_series_bh_microscope_bh-sh.png|300 px]] <br />Source: [BH microscope, 13] [[BH-SH]|| ||
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|-
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|[[File:olympus_series_bh_microscope_bh-swc.png|300 px]] <br />Source: [BH microscope, 13] [[BH-SWC]|| ||
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|-
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|}
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=BHA/BHB/BHC configurations=
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[[File:olympus_series_bh_microscope_system1.jpg|300 px]]
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Above: probably a BHA.  Source: [BH microscope, cover]
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Source: [BH microscope, 18]
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NOTE: -1, -2, etc are my notation for the color columns in [BH microscope, 18]
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{| class="wikitable sortable" border="1"
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!Part #!!Type!!Description!!BHA-1!!BHA-2!!BHA-3!!BHA-4!!BHB-1!!BHB-2!!BHB-3!!BHB-4!!BHC-1!!BHC-2
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|-
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|[[BHA-F]]||Stand|| ||Y||Y||Y||Y|| || || || || ||
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|-
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|[[BHB-F]]||Stand|| || || || || ||Y||Y||Y||Y|| ||
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|-
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|[[BHC-F]]||Stand|| || || || || || || || || ||Y||Y
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|-
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|[[BH-RE]]||Nosepiece||Quintuple||Y||Y||Y||Y|| || || || || ||
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|-
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|[[BH-LH]]||Lamphouse|| ||Y||Y||Y||Y||Y||Y||Y||Y|| ||
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|-
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|[[LS30]]||Bulb||6V, 30W||Y||Y||Y||Y||Y||Y||Y||Y|| ||
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|-
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|[[LS15]]||Bulb||6V, 15W|| || || || || || || || ||Y||Y
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|-
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|[[BH-BI45]]||Observation tube||45 deg binocular|| ||Y|| ||Y|| ||Y|| ||Y|| ||Y
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|-
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|[[BH-TR45]]||Observation tube||45 deg trinocular||Y|| ||Y|| ||Y|| ||Y|| ||Y||
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|-
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|[[BH-SV]]||Stage|| ||Y||Y||Y||Y||Y||Y||Y||Y||Y||Y
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|-
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|[[BH-CD]]||Condenser||Abbe|| || ||Y||Y||Y||Y||Y||Y||Y||Y
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|-
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|[[BH-AAC]]||Condenser||Ach/Apla||Y||Y|| || || || || || || ||
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|-
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| ||Objective||Achromat 4x, 10x, S-40x (spring), S-100x (spring, oil) set|| || ||Y||Y|| || ||Y||Y||Y||Y
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|-
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| ||Objective||Plan achromat 4x, 10x, 40x (spring), 100x (spring, oil) set||Y||Y|| || ||Y||Y|| || || ||
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|-
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| ||Objective||Plan achromat 20x (spring)||Y||Y|| || || || || || || ||
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|-
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|[[BiWF10X]]||Eyepiece||HEP, paired||Y||Y||Y||Y||Y||Y||Y||Y||Y||Y
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|-
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|[[FK5X]]||Eyepiece, photo||5x||Y|| ||Y|| ||Y|| ||Y|| ||Y||
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|-
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|[[45C]]||Filter||for what?|| || || || || || || || || ||
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|-
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| ||Bulb||Spare bulb (2x)||Y||Y||Y||Y||Y||Y||Y||Y||Y||Y
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|-
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| ||Fuse||Spare fuse (2x)||Y||Y||Y||Y||Y||Y||Y||Y||Y||Y
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|-
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| ||Oil||Immersion oil||Y||Y||Y||Y||Y||Y||Y||Y||Y||Y
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|-
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| ||Cover||Vintyl dust cover||Y||Y||Y||Y||Y||Y||Y||Y||Y||Y
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|-
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|}
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=BHMJ configurations=
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[[File:olympus_bhmj_and_bhmj-n_bhmj.png|300 px]]
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Above: A BHMJ, probably a BHMJ-42.  Source: [instruction BHMJ/-N, 3]
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Source: [instruction BHMJ/-N, 2]
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-N adds darkfield
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{| class="wikitable sortable" border="1"
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!Part #!!Type!!Description!!BHMJ-02!!BHMJ-22!!BHMJ-42!!BHMJ-02-N!!BHMJ-22-N!!BHMJ-42-N
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|-
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|[[BHMJ-ST]], [[BHMJ-F]]||Body/base|| ||Y||Y||Y||Y||Y||Y
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|-
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|[[BH-RE]]||Nosepiece|| ||Y||Y||Y|| || ||
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|-
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|[[BH-NRE]]||Nosepiece|| || || || ||Y||Y||Y
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|-
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|[[BH-MA]]||Illuminator (vertical)||Brightfield||Y||Y||Y|| || ||
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|-
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|[[BH-RLA]]||Illuminator (vertical)||Brightfield and darkfield|| || || ||Y||Y||Y
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|-
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|[[CH-M045]]||Observation tube||Monocular||Y|| || ||Y|| ||
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|-
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|[[BH-BI45]]||Observation tube||Monocular|| ||Y|| || ||Y||
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|-
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|[[BH-TR45]]||Observation tube||Binocular (w/ photo)|| || ||Y|| || ||Y
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|-
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|[[BH-LHM]]||Lamphouse||Tungsten||Y||Y||Y||Y||Y||Y
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|-
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|[[LS15]]||Bulb||15W tungsten||Y||Y||Y||Y||Y||Y
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|-
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|[[TF]]||Power supply||Transformer||Y||Y||Y||Y||Y||Y
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|-
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|[[M5X]] <br />[[M10X]] <br />[[M20X]] <br />[[M40X]]||Objective||Set||Y||Y||Y|| || ||
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|-
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|[[Neo5X]] <br />[[Neo10X]] <br />[[Neo20X]] <br />[[Neo40x]]||Objective||Set|| || || ||Y||Y||Y
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|-
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| ||High eyepoint BiWF10X,paired eyepiece|| ||Y||Y|| ||Y||Y
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|-
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| ||High eyepoint WF10X eyepiece||Y|| || ||Y|| ||
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|-
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|[[FK3.3X]]||Photo eyepiece|| || ||Y|| || ||Y
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|-
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| ||Stage plate||Y||Y||Y||Y||Y||Y
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|-
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| ||Stage clips||Y||Y||Y||Y||Y||Y
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|-
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| ||Eyepiece caps|| ||Y||Y|| ||Y||Y
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|-
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|[[32.5C]]||Blue filter||Y||Y||Y||Y||Y||Y
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|-
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| ||Vinyl dust cover||Y||Y||Y||Y||Y||Y
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|-
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|}
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=Measurements=
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Taken from Andrew Zonenberg's BHM unless otherwise stated.
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===Base plate===
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Attaches to microscope frame with four M6x1.0 screws, 15 mm long, in a 2x2 hole pattern. Screw heads are 9.9 mm OD.
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Base plate has 6.7mm clearance holes, scope body is tapped.
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[[File:Hole-pattern.png|none|thumb|BHM hole pattern]]
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Approx 135 mm front-to-back from center of microscope frame to sample.
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=References=
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*Olympus Series BH System Microscope [BH microscope]: [http://www.alanwood.net/downloads/olympus-bh-bha-bhb-bhc-brochure.pdf]
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*Olympus metallurgical microscopes instruction manual, models BHMJ & BHMJ-N [instruction BHMJ/-N]: [http://www.alanwood.net/downloads/olympus-bhmj-bhmj-n-instructions.pdf]

Latest revision as of 21:36, 18 June 2022

Olympus BH Identification

Part list

Model

TODO: add standard metallurgical

Image Name Description Notes
Olympus series bh microscope system1.jpg
Source: [BH microscope, cover] [[BHA]		 Bottom illumination, removable nosepiece
BHB Bottom illumination, fixed nosepiece
BHC Bottom illumination, fixed nosepiece, integrated light source
BHMJ-02 Epi-illumination, sliding stanmd, BF, monocular
BHMJ-22 Epi-illumination, sliding stanmd, BF, binocular
Olympus bhmj and bhmj-n bhmj.png
Source: [instruction BHMJ/-N, 3] [[BHMJ-42]		 Epi-illumination, sliding stanmd, BF, trinocular
BHMJ-02-N Epi-illumination, sliding stanmd, BF/DF, monocular
BHMJ-22-N Epi-illumination, sliding stanmd, BF/DF, binocular
BHMJ-42-N Epi-illumination, sliding stanmd, BF/DF, trinocular


Objective

M is BF only. Neo are BF/DF. All are M25 threaded

Image Part # Type Description Notes
M5X Objective 5x
M10X Objective 10x
M20X Objective 20x
M40X Objective 40x
Neo5X Objective 5x
Neo10X Objective 10x
Neo20X Objective 20x
Neo40X Objective 40x
BH-RE Nosepiece Quintuple
BH-RE Nosepiece
BH-NRE Nosepiece


Illuminator

Image Part # Type Description Notes
BH-MA Illuminator (vertical) Brightfield
BH-RLA Illuminator (vertical) Brightfield and darkfield
Olympus series bh microscope bh-lh.png
Source: [BH microscope, 9] [[BH-LH]		 Lamphouse Tungsten, 30W Pre-centered
BH-LHM Lamphouse Tungsten
Olympus series bh microscope bh-lsh.png
Source: [BH microscope, 9] [[BH-LSH]		 Lamphouse Halogen 100W Centerable
Olympus series bh microscope bh-lh.png
Source: [BH microscope, 9] [[BH-LH]		 Lamphouse
Olympus series bh microscope ls30.png
Source: [BH microscope, 9] [[LS30]		 Bulb 6V, 30W tungsten
Olympus series bh microscope ls15.png
Source: [BH microscope, 9] [[LS15]		 Bulb 6V, 15W tungsten
FK5X Eyepiece, photo 5x
TF Power supply Transformer voltage range?
45C Filter for what?
Olympus series bh microscope jc12v 100w.png
Source: [BH microscope, 9] [[jc12v 100W]		 Bulb Halogen


Observation tube

Image Part # Type Description Notes
CH-M045 Observation tube Monocular
Olympus series bh microscope bh-swtr.png
Source: [BH microscope, 11] [[BH-SWTR]		 Observation tube Binocular w/ photo?
Olympus series bh microscope bh-bi30 bi45.png
Source: [BH microscope, 11] [[BH-BI30]		 Observation tube Binocular, 30 degree
Olympus series bh microscope bh-bi30 bi45.png
Source: [BH microscope, 11] [[BH-BI45]		 Observation tube Binocular, 45 degree
Olympus series bh microscope bh-tr30 tr45.png
Source: [BH microscope, 11] [[BH-TR30]		 Observation tube Binocular, 30 degree (w/ photo)
Olympus series bh microscope bh-tr30 tr45.png
Source: [BH microscope, 11] [[BH-TR45]		 Observation tube Binocular, 45 degree (w/ photo)
BiWF10X Eyepiece HEP, paired
Olympus series bh microscope emm-vi.png
Source: [BH microscope, 15] [[EMM-VI]
Olympus series bh microscope pm-10-35a.png
Source: [BH microscope, 15] [[PM-10-35A]
Olympus series bh microscope pm-10-35l2a.png
Source: [BH microscope, 15] [[PM-10-35L2A]
Olympus series bh microscope pm-10-35m.png
Source: [BH microscope, 15] [[PM-10-35M]
Olympus series bh microscope pm-6.png
Source: [BH microscope, 15] [[PM-6]


Misc

Image Part # Type Description Notes
Zoidberg bh neo turret.jpg [[BH-RE] Nosepiece Quintuple Neo objectives (M25)
Olympus series bh microscope bha-f.png
Source: [BH microscope, 9] [[BHA-F]		 Stand Bottom illumination, removable nosepiece
Olympus series bh microscope bhb-f.png
Source: [BH microscope, 9] [[BHB-F]		 Stand Bottom illumination, fixed nosepiece
Olympus series bh microscope bhc-f.png
Source: [BH microscope, 9] [[BHC-F]		 Stand Bottom illumination, fixed nosepiece, integrated light Lowest cost?
Olympus series bh microscope bh-sv.png
Source: [BH microscope, 13] [[BH-SV]		 Stage
Olympus series bh microscope bh-cd.png
Source: [BH microscope, 13] [[BH-CD]		 Condenser Abbe
Olympus series bh microscope bh-aac.png
Source: [BH microscope, 13] [[BH-AAC]		 Condenser Ach/Apla
BHMJ-ST, BHMJ-F Body/base
FK3.3X Photo eyepiece
32.5C Blue filter
Olympus series bh microscope ah-ca.png
Source: [BH microscope, 11] [[AH-CA]
Olympus series bh microscope ah-fa.png
Source: [BH microscope, 11] [[AH-FA]
Olympus series bh microscope bh-dcd.png
Source: [BH microscope, 13] [[BH-DCD]
Olympus series bh microscope bh-dcw.png
Source: [BH microscope, 13] [[BH-DCW]
Olympus series bh microscope bh-pc.png
Source: [BH microscope, 13] [[BH-PC]
Olympus series bh microscope bh-sh.png
Source: [BH microscope, 13] [[BH-SH]
Olympus series bh microscope bh-swc.png
Source: [BH microscope, 13] [[BH-SWC]


BHA/BHB/BHC configurations

Olympus series bh microscope system1.jpg

Above: probably a BHA. Source: [BH microscope, cover]

Source: [BH microscope, 18]

NOTE: -1, -2, etc are my notation for the color columns in [BH microscope, 18]

Part # Type Description BHA-1 BHA-2 BHA-3 BHA-4 BHB-1 BHB-2 BHB-3 BHB-4 BHC-1 BHC-2
BHA-F Stand Y Y Y Y
BHB-F Stand Y Y Y Y
BHC-F Stand Y Y
BH-RE Nosepiece Quintuple Y Y Y Y
BH-LH Lamphouse Y Y Y Y Y Y Y Y
LS30 Bulb 6V, 30W Y Y Y Y Y Y Y Y
LS15 Bulb 6V, 15W Y Y
BH-BI45 Observation tube 45 deg binocular Y Y Y Y Y
BH-TR45 Observation tube 45 deg trinocular Y Y Y Y Y
BH-SV Stage Y Y Y Y Y Y Y Y Y Y
BH-CD Condenser Abbe Y Y Y Y Y Y Y Y
BH-AAC Condenser Ach/Apla Y Y
Objective Achromat 4x, 10x, S-40x (spring), S-100x (spring, oil) set Y Y Y Y Y Y
Objective Plan achromat 4x, 10x, 40x (spring), 100x (spring, oil) set Y Y Y Y
Objective Plan achromat 20x (spring) Y Y
BiWF10X Eyepiece HEP, paired Y Y Y Y Y Y Y Y Y Y
FK5X Eyepiece, photo 5x Y Y Y Y Y
45C Filter for what?
Bulb Spare bulb (2x) Y Y Y Y Y Y Y Y Y Y
Fuse Spare fuse (2x) Y Y Y Y Y Y Y Y Y Y
Oil Immersion oil Y Y Y Y Y Y Y Y Y Y
Cover Vintyl dust cover Y Y Y Y Y Y Y Y Y Y


BHMJ configurations

Olympus bhmj and bhmj-n bhmj.png

Above: A BHMJ, probably a BHMJ-42. Source: [instruction BHMJ/-N, 3]

Source: [instruction BHMJ/-N, 2]

-N adds darkfield

Part # Type Description BHMJ-02 BHMJ-22 BHMJ-42 BHMJ-02-N BHMJ-22-N BHMJ-42-N
BHMJ-ST, BHMJ-F Body/base Y Y Y Y Y Y
BH-RE Nosepiece Y Y Y
BH-NRE Nosepiece Y Y Y
BH-MA Illuminator (vertical) Brightfield Y Y Y
BH-RLA Illuminator (vertical) Brightfield and darkfield Y Y Y
CH-M045 Observation tube Monocular Y Y
BH-BI45 Observation tube Monocular Y Y
BH-TR45 Observation tube Binocular (w/ photo) Y Y
BH-LHM Lamphouse Tungsten Y Y Y Y Y Y
LS15 Bulb 15W tungsten Y Y Y Y Y Y
TF Power supply Transformer Y Y Y Y Y Y
M5X
M10X
M20X
M40X		 Objective Set Y Y Y
Neo5X
Neo10X
Neo20X
Neo40x		 Objective Set Y Y Y
High eyepoint BiWF10X,paired eyepiece Y Y Y Y
High eyepoint WF10X eyepiece Y Y
FK3.3X Photo eyepiece Y Y
Stage plate Y Y Y Y Y Y
Stage clips Y Y Y Y Y Y
Eyepiece caps Y Y Y Y
32.5C Blue filter Y Y Y Y Y Y
Vinyl dust cover Y Y Y Y Y Y

Measurements

Taken from Andrew Zonenberg's BHM unless otherwise stated.

Base plate

Attaches to microscope frame with four M6x1.0 screws, 15 mm long, in a 2x2 hole pattern. Screw heads are 9.9 mm OD.

Base plate has 6.7mm clearance holes, scope body is tapped.

BHM hole pattern

Approx 135 mm front-to-back from center of microscope frame to sample.

References

  • Olympus Series BH System Microscope [BH microscope]: [1]
  • Olympus metallurgical microscopes instruction manual, models BHMJ & BHMJ-N [instruction BHMJ/-N]: [2]
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