A retrofit lamp comprising: a lamp housing, comprising: a light engine including at least one solid state light source; a base configured to connect to a power source; a control circuit coupled to the base and to the light engine, wherein the control circuit is configured to receive power from the power source via the base and to provide the power to the at least one solid state light source of the light engine; and a thermal management system configured to dissipate thermal energy generated within the lamp; a glass bulb; and a mechanical interface for the glass bulb, comprising: a connector; and an optical mount, wherein the optical mount is configured to receive the connector and, in so receiving, to operatively couple with the connector so as to secure the glass bulb in a position, and wherein the optical mount is attached to the lamp housing such that the glass bulb surrounds at least a portion of the light engine; wherein the connector comprises: a sleeve, wherein the sleeve is shaped to fit on a portion of the glass bulb that defines an opening, the sleeve including a connector mechanism to operatively couple with the optical mount and wherein the sleeve is attached to the glass bulb; and wherein the connector mechanism is a plurality of posts, wherein at least one post of the plurality of posts extends radially from the sleeve. a lamp housing, comprising: a light engine including at least one solid state light source; a base configured to connect to a power source; a control circuit coupled to the base and to the light engine, wherein the control circuit is configured to receive power from the power source via the base and to provide the power to the at least one solid state light source of the light engine; and a thermal management system configured to dissipate thermal energy generated within the lamp; a glass bulb; and a light engine including at least one solid state light source; a base configured to connect to a power source; a control circuit coupled to the base and to the light engine, wherein the control circuit is configured to receive power from the power source via the base and to provide the power to the at least one solid state light source of the light engine; and a thermal management system configured to dissipate thermal energy generated within the lamp; a glass bulb; and a mechanical interface for the glass bulb, comprising: a connector; and an optical mount, wherein the optical mount is configured to receive the connector and, in so receiving, to operatively couple with the connector so as to secure the glass bulb in a position, and wherein the optical mount is attached to the lamp housing such that the glass bulb surrounds at least a portion of the light engine; wherein the connector comprises: a sleeve, wherein the sleeve is shaped to fit on a portion of the glass bulb that defines an opening, the sleeve including a connector mechanism to operatively couple with the optical mount and wherein the sleeve is attached to the glass bulb; and wherein the connector mechanism is a plurality of posts, wherein at least one post of the plurality of posts extends radially from the sleeve. an optical mount, wherein the optical mount is configured to receive the connector and, in so receiving, to operatively couple with the connector so as to secure the glass bulb in a position, and wherein the optical mount is attached to the lamp housing such that the glass bulb surrounds at least a portion of the light engine; wherein the connector comprises: a sleeve, wherein the sleeve is shaped to fit on a portion of the glass bulb that defines an opening, the sleeve including a connector mechanism to operatively couple with the optical mount and wherein the sleeve is attached to the glass bulb; and wherein the connector mechanism is a plurality of posts, wherein at least one post of the plurality of posts extends radially from the sleeve.