Prefocus Base Light Bulbs

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Prefocus Base Size

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10,000 lm to 19,999 lm

20,000 lm to 29,999 lm

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8 Products

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About Brightness and Light Appearance

Find the right lumen level to brighten your space. Then, compare the way warm, neutral, and cool lighting affect the appearance of everyday objects.

Prefocus-Base Miniature Light Bulbs

Often used as the light source in microscopes, inspection instruments, and industrial testing equipment. A prefocus collar fixes the bulb in place for accurate beam focus. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.

										Bulb
	Bulb Trade No.	Voltage	Wattage	Brightness	Operating Position	Light Technology	Rated Life	Color	Overall Lg.	Dia.	Material	Shape No.		Each
Double Contact—P15d Candelabra Base (0.59" Dia.)







				Tapered Bulb

				1460	6.5V AC/6.5V DC	17.9 W	289 lm	Horizontal	Incandescent	100 hr.	Clear	2"	1"	Glass	S8	1505K59	000000


				1460X	6.5V AC/6.5V DC	17.9 W	289 lm	Horizontal	Incandescent	100 hr.	Clear	2"	1"	Glass	S8	1505K79	00000
				1630	6.5V AC/6.5V DC	17.9 W	289 lm	Horizontal	Incandescent	100 hr.	Clear	2"	1"	Glass	S8	1505K62	0000
				1631X	6.5V AC/6.5V DC	17.9 W	289 lm	Horizontal	Incandescent	100 hr.	Clear	2"	1"	Glass	S8	1505K63	0000
				1634	20V AC/20V DC	20 W	302 lm	Horizontal	Incandescent	200 hr.	Clear	2"	1"	Glass	S8	1505K259	0000

Prefocus-Base Light Bulbs

Small but powerful, these bulbs are commonly used in stage and security lighting. All have a neutral light appearance that is brighter than warm light. A bulb’s estimated yearly energy cost is based on 3 hours of usage per day at $0.11 per kWh. These halogen bulbs are slightly more energy efficient than incandescent bulbs, but they generate more heat.

			Light					Bulb
	Voltage	Wattage, W	Appearance	Tech.	Brightness, lm	Operating Position	Bulb Trade No.	Shape No.	Dia.	Color	Rated Life, hr.	Est. Yearly Energy Cost	Overall Lg.		Each
Single Contact—Medium Base (1 1/8" Dia.)







				Pointed Bulb

				120V AC/120V DC	500	Neutral (3,050 K)	Halogen	11,000	Horizontal Base Down	BTL	T6	3/4"	Clear	500	$60.22	5"	2286K51	000000


				120V AC/120V DC	500	Neutral (3,200 K)	Halogen	13,000	Horizontal Base Down	BTM	T6	3/4"	Clear	100	$60.22	5"	2286K52	00000
				120V AC/120V DC	1,000	Neutral (3,200 K)	Halogen	28,500	Horizontal Base Down	BTR	T7	7/8"	Clear	250	$120.45	5"	2286K55	00000