Device for detecting emission light of micro-object having means for suppressing reflected and scattered excitation light

A micro-object emission light detecting device comprising:

• an excitation light source that emits excitation light;
• a light-transparent chip that supports a micro-object labeled with a fluorophore;
• a fluorescence collecting microlens that converges fluorescence or phosphorescence emitted by the micro-object irradiated by the excitation light;
• a semiconductor light-detecting element on which the converged emitted light falls incident;
• and
• means for suppressing reflected and scattered light arising from excitation light falling incident on the semiconductor light-emitting element,
• the means for suppressing reflected and scattered excitation light comprising a non-horizontal surface which is not perpendicular to the excitation light, and which is formed on a part of the light-transparent chip where transmitted excitation light exits, and which inclines reflected light of the excitation light reflected at the non-horizontal surface.

A micro-object emission light detecting device comprising:

• an excitation light source that emits excitation light;
• a light-transparent chip that supports a micro-object labeled with a fluorophore;
• a fluorescence collecting microlens that converges fluorescence or phosphorescence emitted by the micro-object irradiated by the excitation light;
• a semiconductor light-detecting element on which the converged emitted light falls incident;
• and
• means for suppressing reflected and scattered light arising from excitation light falling incident on the semiconductor light-emitting element,
• the means for suppressing reflected and scattered excitation light including an antireflection film provided on a part of the fluorescence collecting microlens on which excitation light falls incident.

A micro-object emission light detecting device comprising:

• an excitation light source that emits excitation light;
• a light-transparent chip that supports a micro-object labeled with a fluorophore;
• a fluorescence collecting microlens that converges fluorescence or phosphorescence emitted by the micro-object irradiated by the excitation light;
• a semiconductor light-detecting element on which the converged emitted light falls incident;
• and
• means for suppressing reflected and scattered light arising from excitation light falling incident on the semiconductor light-emitting element,
• the means for suppressing reflected and scattered excitation light including an excitation light absorbing member or an excitation light antireflection film provided on a part of an exit surface from which excitation light transmitted from the light-transparent chip exits.