NGHieN CLTU - TRAO D | c t r u XAC DEVH HE SO PHAN XA CUA GU'DNG CHIEU HAU T /NGHIEN RESEARCH ON DETERMINATION OF THE COEFFICIENT OF REFLECTION OF VEHICLES REARVIEW MIRROR TS Bang Vift Ha, ThS Vii Thanh Niem, ThS Dinh Quang Vu, ThS Pham Minh Thinh Cue Dang kiim Vift Nam T6M TAT Guang chieu hdu Id linh kien quan ducrc sii dgng tren cdc logi xe to giup cho nguai ldi nhgn biet, phdn dodn cdc vdt the xung quanh vdphia sau de dieu khien phuang tign Ngodi vi$c ddm bdo dg bin ca hgc, viing quan sdt phia sau xe, guong chieu hgu phdi ddm bdo tinh ndng phdn xg Ddy Id mgt nhitng thong sd quan trgng ddnh gid chdt lugng cua guong Bdi bdo ndy trinh bdy phucmg phdp xdc dinh hg so phdn xg cua guang chieu hdu to bdng thuc nghigm Tir khda: Guang chieu hdu, hesophdnxg, viing quan sdt ABSTRACT Rearview mirror is an important component used for automobiles It helps the driver identify and judge surrounding and rear objects lo control vehicle In addition to ensuring mechanical strength and field of vision, rearview mirror also ensures the reflection This is one of the most important parameters in the quality assessment of rearview mirror This article gives the test methods to determine the coefficient of reflection of vehicle rearview mirror by experiment Keywords: Rearview mirror, coefficient of reflection,fieldof vision \ DAT VAN D t O goc dp ve an toin, gucmg chiiu hiu la linh kien khdng thi thiiu tren cic loji xe t6 C6 nhieu lo»i guong chieu hiu vpi hmh d?ng vi cdng nang khac nhau, nhien, cic lo»i guong chieu hau nay, ngcii dim bio vi dp bin CO hpc, vung quan sit phia sau xe, phii dim bao tinh nang phin xa Day la thdng so quan hpng inh hudmg din nang quan sit, nhin biit, phin doin cic vit thi phia sau vi ximg quanh cua ngudi lii, giiip ngu6i lii diiu khiin phuong tifn an toin De dinh gii nang phin xa gucmg, ngupi ta sir dung mpt nguin sing chuan A theo CIE chiiu qua guong t