Patent ID: 7244033

Claim:
A binocular, comprising: a pair of transparent cover optical elements; a main body having an inside and a synthetic resin, wherein an exterior surface of the main body includes a gas barrier layer including a plated layer; a pair of objective optical elements disposed in the main body, each of the objective optical elements receiving light from the corresponding transparent cover optical element, the objective optical elements moving in an optical axis direction so as to perform a focusing operation; a pair of blurring compensation optical elements disposed in the main body, each of the blurring compensation optical elements receiving light from the corresponding objective optical element, the blurring compensation optical elements displacing such that an emission optical axis differs in relation to an incident optical axis: a pair of ocular units held by the main body, the main body and the ocular units being air-tightly connected, each of the ocular units including: an upright optical element receiving light from the corresponding blurring compensation optical element; and an ocular optical element leading light from the upright optical element; and an absorbent member disposed in the main body, the absorbent member being fixed on an upper surface of the main body, wherein the absorbent member has a moisture absorptive capacity corresponding to at least an amount of water retention inside the main body.