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Worker looking at a microchip. About 25 years old Caucasian male with beard and glasses.
Black and white closeup of man face lying on glass with reflection. Salvador, Bahia, Brazil.
Full frame closeup of lighthouse glass.
Man having his eye structures examined by a special optometrist equipment
Quality control round eyeglass lens from eyeglass lens factory industry
Proffesional measuring equipment
Man, optometry and slit lamp for check, vision and care in wellness assessment with eyesight at clinic. Person, machine and patient for health, light and laser for retina scan with lens for eye exam
Hold on, there’s a light at the end of the tunnel
A dark-skinned African-American man without safety equipment checks the settings and operation of a non-working automated computer-controlled metalworking machine, illuminated by a signal light, checking the quality of the drill head and drill bits on the machine. Portrait by the machine, copy paste, smiling worker,
light tube with led lamp and fresnel lens in chinese projector
Detailed Close Up View of the Clear Crystal Refractive Precision Cut First Order Fresnel Lense and Lit Bulb which Proudly Projects its Protective Beam along the Oregon Coast and 40 Miles Out to Sea
Ophthalmologist examining patient's eyes. Side view of White man is checking the eye vision with phoropter eyesight measurement testing machine. Medical check up. Handsome man getting an eye exam at ophthalmology clinic. Checking retina of a male eye close-up.
Oculist holds a lens in his hand. Eyewear lens on black background
Futuristic tech portrait of mature man in virtual space. Vibrant, optimistic with a human touch.
Light Bulb of the lighthouse at Cabo Polonio on Uruguay
Patient having eye examination at doctor's office, optometrist using a slit lamp
Fish-eye view Patient Personal Perspective of a young African male student doctor shining an Ophthalmoscope into the lens for a Medical Eye Exam in a University Hospital in Cape Town South Africa
Camera lens with light and lens flare, close-up. Selective focus
Optometrist, patient and assessment in clinic for eye exam, vision and optometry with ophthalmoscope. Specialist, man and machine in hospital for wellness, healthcare or ophthalmology for glaucoma
Man looks through a cardboard tube
‎A light source with beam refraction and a halo that appears nearby.
Concentrated busy inspector in hardhat examining quality of manufacturing product before selling, view through object
Futuristic tech portrait of mature man in virtual space. Vibrant, optimistic with a human touch.
View from throat of male doctor inspecting larynx with medical spatula. Concentrated young european bearded man
Doctor using slit lamp during an eye exam, close-up
Lens with open aperture in detail
Inside the working Fresnel Lens of Cape Blanco Lighthouse OR. One light is on and the other is the backup.
A watchmaker is fixing a watch in his work place.
Close-up of lantern bulb inside Cape Blanco Lighthouse, Oregon.
Toronto, Canada.
Free Images: "bestof:Mate 3rd Class Ryan Pritchard looks through the center of a fresnel lens while testing a new lamp to ensure it is working properly, at the lighthouse on board"
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US_Navy_050905-N-0535P-117_Hurricane_Katrina_victims_board_a_U.S._Navy_SH-60B_Seahawk_helicopter_en_route_to_an_evacuation_center_in_New_Orleans.jpg
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US_Navy_040914-N-8704K-003_Information_Systems_Technician_1st_Class_Ebony_Nichols,_right,_looks_on_as_Command_Master_Chief_Kevin_Davis,_center,_places_her_white_hat_on_the_ceremonial_slide.jpg
US_Navy_040725-N-1485H-007_Aviation_Support_Equipment_Technician_Airman_Israel_Huembes_of_Toledo,_Ohio,_dons_proper_personnel_protective_equipment_(PPE)_while_properly_disposing_of_hazardous_material.jpg
US_Navy_061209-N-8148A-038_Customs_Border_Clearance_Agent_Boatswain's_Mate_3rd_Class_Ryan_Koney,_right,_points_out_clumps_of_missed_dirt_to_Customs_Border_Clearance_Agent_Quartermaster_3rd_Class_Christian_Moreno_during_a_qualit.jpg
US_Navy_030926-N-5134H-002_Photographer^rsquo,s_Mate_3rd_Class_Elizabeth_Acosta_assigned_to_Fleet_Imaging_Center_Pacific,_looks_at_her_fellow_photographer's_entries.jpg
US_Navy_081002-N-4954I-004_Aviation_Machinist's_Mate_3rd_Class_Anthony_Blackner,_left,_from_Jacksonville,_Fla.,_and_Aviation_Machinist's_Mate_3rd_Class_Ryan_Fingall,_from_Niceville,_Fla.,_connect_an_air_hose_to_the_engine_of_an.jpg
US_Navy_101219-N-2953W-043_Aviation_Boatswain's_Mate_(Handling)_3rd_Class_Cody_Garza_looks_at_the_Ouija_board_during_a_general_quarters_drill_aboar.jpg
US_Navy_110504-N-RC734-123_Boatswain's_Mate_3rd_Class_Justin_Sims_looks_up_from_a_rigid-hull_inflatable_boat_prior_to_boarding_USS_Comstock_(LSD_45.jpg
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US_Navy_081002-N-4954I-012_Aviation_Boatswain's_Mate_(Fuels)_3rd_Class_Dejon_Kennedy,_from_Lynchburg,_Va.,_prepares_JP-5_aircraft_fuel_samples_for_testing_aboard_the_Nimitz-class_aircraft_carrier_USS_John_C._Stennis_(CVN_74).jpg
US_Navy_040831-N-5134H-001_Electricians_Mate_3rd_Class_Jason_Burnett,_of_Snohomish,_Wash.,_takes_readings_from_a_circuit_board.jpg
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U.S._Navy_Boatswain's_Mate_3rd_Class_John_Hardy,_assigned_to_the_newly_commissioned_amphibious_assault_ship_USS_America_(LHA_6),_paints_an_exterior_wall_at_a_children's_home_in_Valparaiso,_Chile,_Aug._26,_2014_140826-N-MZ309-162.jpg
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US_Navy_060403-N-7711S-126_Hull_Maintenance_Technician_3rd_Class_Ryan_Rousseau_works_on_a_steel_bracket_for_a_mounting_board_in_the_repair_shop_aboard_the_Nimitz-class_aircraft_carrier_USS_Ronald_Reagan_(CVN_76).jpg
US_Navy_080218-N-2420K-006_Boatswain's_Mate_3rd_Class_Christian_Anton_straps_on_protective_headgear_before_a_visit,_board,_search_and_seizure_procedure_being_conducted_by_the_guided-missile_frigate_USS_Ingraham_(FFG_61).jpg
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US_Navy_100909-N-7191M-024_Aviation_Machinist's_Mate_3rd_Class_Daniel_Wilson,_from_New_Orleans,_performs_corrosion_treatment_on_the_rotor_of_an_SH.jpg
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US_Navy_040312-N-7822B-008_Electrician^rsquo,s_Mate_3rd_Class_Joy_Carlos,_assigned_to_Naval_Station_Everett,_visits_with_her_five_month_old_daughter_during_her_lunch_break_at_the_Child_Development_Center_(CDC).jpg
US_Navy_100609-N-0000S-002_Aerographer's_Mate_Airman_Alex_Boston,_left,_and_Aerographer's_Mate_3rd_Class_Ryan_Thuecks,_right,_both_assigned_to_the_Naval_Oceanography_Mine_Warfare_Center,_and_Ana_Ziegler.jpg
US_Navy_100922-N-7103C-091_Aviation_Boatswain's_Mate_3rd_Class_Max_Torres,_from_Houston,_uses_a_chop_saw_to_cut_through_a_worn_arresting_cable_in_p.jpg
US_Navy_101112-N-2218S-015_unner's_Mate_2nd_Class_Anthony_Chenoweth_looks_through_the_sight_of_a_Mk-38_25_mm_gun_during_a_training_exercise_aboard.jpg
US_Navy_110202-A-0566T-078_Logistics_Specialist_3rd_Class_Johan_Sanchez,_center,_searches_Seaman_Ryan_Moreno,_a_role_player,_during_a_visit,_board.jpg
US_Navy_061217-O-0000L-010_Newly_frocked_Machinist_Mate_3rd_Class_Matthew_Bove_receives_his_frocking_letter_and_new_rank_insignia_from_USS_Frank_Cable_(AS_40)_Commanding_Officer_Capt._Leo_Goff.jpg
US_Navy_030320-N-4142G-002_Interior_Communication's_Electrician_3rd_Class_Jason_Kerce_performs_maintenance_on_the_Fresnel_Lens_system_aboard_the_aircraft_carrier_USS_Constellation_(CV_64).jpg
US_Navy_040701-N-1045B-107_Aviation_Boatswain^rsquo,s_Mate_3rd_Class_Andres_Escobare,_of_Whitehall,_Penn.,_center,_and_Lt._Kertreck_Brooks_of_San_Diego,_monitor_the_approach_path_on_an_S-3B_Viking.jpg
US_Navy_040705-N-2788L-127_Hull_Technician_3rd_Class_Ryan_Rousseau,_from_St._Charles,_Mich.,_brazes_a_plug_assembled_for_a_salt_water_flushing_system_in_the_pipe_shop_aboard_USS_Ronald_Reagan_(CVN_76).jpg
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US_Navy_111018-N-DU438-153_Boatswain's_Mate_2nd_Class_Ryan_Beaton_clears_the_stop_chain_aboard_the_guided-missile_cruiser_USS_Gettysburg_(CG_64).jpg
US_Navy_111129-N-PB383-707_Aviation_Boatswain's_Mate_(Fuels)_3rd_Class_James_Lising_explains_how_to_properly_man_a_fire_hose_to_a_Marine_during_a_f.jpg
US_Navy_030612-N-7512V-004_Construction_Mechanic_3rd_Class_Jason_Young_looks_on_as_Construction_Mechanic_2nd_Class_Robert_Brien_hooks_the_hoist_on_a_new_50-ton_linkbelt_crane_to_a_calibrating_weight_while_certifying_the_crane's.jpg
US_Navy_040722-N-5464G-080_Aviation_Boatswain's_Mate_3rd_Class_Abbas_Syed_of_Dallas,_Texas,_guides_a_C-2A_Greyhound_launch_bar_into_a_catapult_shuttle.jpg
US_Navy_100922-N-7103C-099_Aviation_Boatswain's_Mate_(Equipment)_3rd_Class_Joshua_Lewis,_from_Aliceville,_Ala.,_right,_and_Aviation_Boatswain's_Mat.jpg
US_Navy_101013-N-2953W-234_Aviation_Boatswain's_Mate_(Handling)_3rd_Class_Adam_Merrill_performs_maintenance_on_a_fire_hose_in_the_hangar_bay_of_the.jpg
USS_Freedom_engine_testing_100314-N-GU530-118.jpg
USS_Wasp_(LHD-1)_welldeck.jpg
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US_Navy_090904-N-8119A-005_Machinist's_Mate_1st_Class_Gery_Poppleton,_center,_trains_Machinist's_Mate_2nd_Class_Dan_Firestone_and_Machinist's_Mate_3rd_Class_Anthony_Roman.jpg
US_Navy_100729-N-2218S-037_Chief_Boatswain's_Mate_John_Tredway_shows_Master-at-Arms_3rd_Class_Hull_Rohde_how_to_tie_a_knot.jpg
US_Navy_110515-N-UO379-168_Aviation_Boatswain's_Mate_(Handling)_2nd_Class_Ryan_Hilliard_guides_an_F-A-18C_Hornet_toward_a_catapult_shuttle_aboard_U.jpg
Fuel_samples,_systems_testing_aboard_USS_John_C._Stennis_DVIDS120335.jpg
US_Navy_030205-N-8213G-001_Signalman_3rd_Class_Shawn_Billingslea_from_New_York,_N.Y.,_stands_lookout_watch_on_the_signal_bridge_for_an_early_morning_arrival_at_Norfolk_Naval_Station.jpg
US_Navy_080723-N-6676S-061_Chief_Aviation_Electrician's_Mate_Robert_Colonna,_center,_and_Aviation_Machinist's_Mate_3rd_Class_Josh_Elmore,_left,_discuss_the_morning_agenda.jpg
US_Navy_050913-N-8933S-008_Hull_Technician_2nd_Class_Christopher_Gray_and_Electrician_Mate_3rd_Class_Bryan_Davis_make_final_preparations_to_energize_electrical_submersible_pump_powered_by_a_hybrid_electric_truck.jpg
Future_USS_America_armory_sailors_clean_weapons_140814-N-MZ309-052.jpg
US_Navy_030816-N-7293M-011_Steelworker_3rd_Class_Aaron_Killingbeck,_from_New_Castle,_Ind.,_prepares_a_pressure_washer_to_blast_grime_off_the_walls_of_the_Christian_Servicemen's_Center_in_Maite,_Guam.jpg
US_Navy_030816-N-7293M-020_Steelworker_3rd_Class_Aaron_Killingbeck,_from_New_Castle,_Ind,_pressure_washes_grime_off_the_walls_of_the_Christian_Servicemen's_Center_in_Maite,_Guam.jpg
US_Navy_030927-N-2385R-008_Aviation_Structural_Mechanic_3rd_Class_Scott_Bader,_from_Fairborn,_Ohio,_and_Aviation_Boatswain^rsquo,s_Mate_3rd_Class_Ricardo_Manjarrez,_from_Nogales,_Ariz._participate_in_flight_deck_drills.jpg
US_Navy_040226-N-8273J-169_Working_with_a_local_bakery,_Culinary_Specialist_3rd_Class_Nickie_Amoroso,_of_Delta,_Colo.,_prepares_pastries.jpg
US_Navy_040226-N-8273J-180_Working_with_a_local_bakery,_Culinary_Specialist_3rd_Class_Nickie_Amoroso,_of_Delta,_Colo.,_adds_apricots_to_fruit-filled_pastries.jpg
US_Navy_050913-N-8502J-002_Electrican's_Mate_2nd_Class_Robert_Pedersen_and_Electrican's_Mate_3rd_Class_Bryan_Davis_assigned_to_the_amphibious_assault_ship_USS_Iwo_Jima_(LHD_7)_replace_fuses_to_an_electrical_submersible_pump.jpg
US_Navy_040528-N-6371Q-080_Electronic_Technician_3rd_Class_Manuel_Lopez,_center,_helps_patients_at_New_York_City's_Bellevue_Hospital,_work_together_to_complete_a_painting_that_will_be_donated_to_a_children's_hospital.jpg
US_Navy_060525-N-4936C-002_Machinist^rsquo,s_Mate_Fireman_Kyle_Martindale_looks_out_over_the_New_York_World_Trade_Center_Ground_Zero_site.jpg
Seabees_Working_in_Guantanamo_Bay_DVIDS357417.jpg
Seabees_Working_in_Guantanamo_Bay_DVIDS357987.jpg
US_Navy_020410-N-3986D-002_USS_Washington_-_E-2C_launch.jpg
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