This is a original inside lamp, meaning the bulb used is the same as in the original lamp from SONY. As the original bulb is used you can be sure the performance will match the original. See below for more options.
Sony - LMPH260 - Replacement Lamp, Voted #1 NSW HiFi Store
BULB REPLACEMENT: SONY VPL-HW55ES
Professional Lamps - Professional Lamps LMP-H202 - PSS Audiovisual Equipment
Where to Buy Sony HW55ES-W Projector Lamps Bulbs
Projector Lamps
Original Burner LMP-H210 for SONY VPLHW45ES VPLHW45EW VPLHW65ES - AliExpress
Sony Original Inside Lamp For SONY VPL HW55ES Projector (Original Lamp in Compatible Housing) - Projector Lamps from AV Parts Master Ltd UK
Alda PQ Original Beamerlampe / Projektorlampe für SONY VPL HW55ES Projektor
VPL-HW55ES bulb, cheap lamp sony LMP-H202 for video projector sony : lamp / Genius or Original accessories.
How to Replace Your LMP-H220 Projector Lamp in Your Sony Projector.