We present prospects of two experiments using the Tokyo Axion Helioscope . One is a search for solar axions . In the past measurements , axion mass from 0 to 0.27 \mathrm { eV } and from 0.84 to 1.00 \mathrm { eV } have been scanned and no positive evidence was seen . We are now actively preparing a new phase of the experiment aiming at axion mass over 1 \mathrm { eV } . The other is a search for hidden sector photons from the Sun . We have been designing and testing some additional equipments , which have to be installed on the helioscope to search for hidden photons with mass of over 10 ^ { -3 } \mathrm { eV } .